Use the unscoped eslint-plugin names in the notes

## Summary

Moves `commons/bot-agents` off Deno. The action's TypeScript now runs directly on the job image's Node.js (`node src/<phase>.ts`, using Node's built-in type stripping), with no build step and still no runtime dependency. Repository checks move to Vite+ (`vp check`, `vp test`).

## What changed

- **Runtime.** `action.yml` runs `prepare.ts`, `run.ts`, and `post.ts` with `node` instead of `deno run -A`. `package.json` (`"type": "module"`, `engines.node >=24.2` for `import.meta.main`) is now copied into the root-owned source copy by `scripts/protect-source.sh`.
- **Profiles.** `profiles.yml` → `profiles.json`, with the same content (encrypted values unchanged), parsed with `JSON.parse`. This drops the only runtime dependency (`@std/yaml`).
- **Deno APIs → Node.**
  - `src/command.ts` wraps `child_process.spawn` with the old `Deno.Command` shapes: `output()`/`spawn()`, `clearEnv`, `uid`/`gid`, and Deno's stdio defaults (stdin inherited; stdout/stderr piped for `output()`, inherited for `spawn()`). A signal exit maps to `128 + signo`. Status settles on process exit.
  - `src/errors.ts` maps `NotFound` to `ENOENT`/`ESRCH`.
  - fs, path, stream, and readline calls are mapped one for one. `makeTempFile` becomes an exclusive `wx` 0600 create.
- **Size refactors.** These are needed for Oxlint's default limits. There are no behavior changes and no overrides for source files.
  - `run.ts` is split into `run-context.ts`, `agents.ts`, and `agent-{claude,codex,opencode}.ts`.
  - `post.ts` is split into `post.ts` and `post-artifacts.ts`.
  - `parseCredentials`, `readOutcome`, and `postRuntime` are broken into helpers.
  - Loops that awaited sequentially became recursion or a `reduce` chain, so they stay sequential. `/proc` status reads became `Promise.all`.
  - `src/json.ts` adds type guards in place of `as` casts.
- **Tests.** The 58 `Deno.test` cases were converted to Vitest with the codemod, and its TODOs were finished by hand.
  - Unit tests are `src/*.test.ts`; the repository-level workflow test is `tests/workflow.test.ts`.
  - Root-only tests are now `test.skipIf(!IS_ROOT)`, so they show as skipped instead of silently passing.
  - New `tests/entrypoints.test.ts` runs each phase under real Node to prove its whole import graph loads.
- **Config.** The only config files are `package.json`, `tsconfig.json`, and `vite.config.ts`, plus `package-lock.json`.
  - Lint uses Oxlint correctness/suspicious/pedantic/perf at error, with default limits and type-aware checks.
  - `scripts/project-lint.ts` holds the rule list. It maps Deno's `recommended` rules that fall outside those categories, adds the template's `id-match`, `no-disable-comments`, and `no-non-ts-imports`, and maps Deno's `no-window`/`no-process-global`/`no-node-globals` to `no-restricted-globals` (so `process`/`Buffer` come from `node:` imports).
- **CI.** `.gitea/workflows/check.yml` runs `node --version`, `npm ci`, `npx vp check`, and `npx vp test` in the default runner image.
- **Formatting.** Oxfmt formatting is a separate first commit, so the second commit shows only the semantic diff.
- **AGENTS.md** is updated for the new toolchain.

## Deviations / risks

- **Live `@main` switch.** Six consumer repos use `commons/bot-agents@main`, so merging switches all of them at once. Suggested before merging: tag the current `main` (e.g. `deno-final`) as a rollback target, and canary this branch from one consumer (`uses: …/commons/bot-agents@node-migration`) on a throwaway PR.
- **Node version.** `post.ts` relies on `import.meta.main`, which needs Node ≥ 24.2. DANNYEC's cached `node:24-bookworm` minor is unknown (`forcePull=false`), and the CI job now prints `node --version` to confirm it.
- **Deno stays in the global install.** `deno` remains in the action's global npm install because agents still verify Deno-based consumers (memona, memona-home). Remove it once those repos move.
- **`prefer-readonly-parameter-types` is off.** This pedantic rule is turned off, as in the explicit-types template and the app repos, because Node/web types (`Response`, `Stats`, `RequestInit`) can never satisfy it. `scripts/**` has one narrow override (`no-unsafe-enum-comparison`) for AST node `type` comparisons.
- **Stricter validation of malformed input.** For valid input, behavior is unchanged. A few validations are stricter where the old code would have used a malformed value:
  - Gitea `/user` and comment responses are checked.
  - The runtime manifest and the outcome's profile type are checked against known values.
  - Some type-check errors are now `TypeError` (same messages).
- **@cunarist lint plugins.** "CI fails until @cunarist/eslint-plugin-* are published" does **not** apply here. This repo's Deno setup enabled no plugin, so it depends on none of `@cunarist/eslint-plugin-*`, and CI can pass as is.

## Verification

- `vp check`: formatting, lint (0 warnings), and type check all pass.
- `vp test` as a normal user: 56 passed, 5 root-only skipped.
- `vp test` as root in `node:24-bookworm` (Node v24.22.0, the CI image): all 61 passed, including the UID isolation, process cleanup, and `prepare.ts` cleanup tests.
- End-to-end smoke as root in `node:24-bookworm`, with fake `codex`/`claude`/`npx` binaries and a fake Gitea, through `protect-source.sh` → `prepare.ts` → `run.ts` → `post.ts`:
  - Codex hit "usage limit" and fell through to Claude.
  - Agents ran as UIDs 20000/20001 without the master key.
  - The Codex login was persisted to `/root/.codex/auth.json` (0600).
  - The PR review with an inline comment was posted with the reviewer token.
  - Runtime credentials were removed and the git author was configured.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: #20
Reviewed-by: bot <noreply@capsulizers.com>
Co-authored-by: Danny Kim <temeddix@gmail.com>
Co-committed-by: Danny Kim <temeddix@gmail.com>

.agents/memory/agent-cli-auth-failures.md

@@ -0,0 +1,24 @@
+---
+description: How codex, claude, and opencode report rejected credentials, and how the runner detects them
+---
+
+Observed 2026-10 (codex 0.153/0.162, Claude Code 2.1.28x, opencode 1.18/1.19):
+
+- Codex: `codex login status` only reads the local auth.json, so a
+  server-revoked ChatGPT login passes it. `codex exec` then exits 1 with stderr
+  ERROR lines such as `refresh_token_invalidated` / "Your session has ended.
+  Please log in again.", `auth error code: token_revoked`, `401 Unauthorized`; a
+  bad API key gives `invalid_api_key`. Codex echoes the whole prompt and tool
+  output to stderr, so `isCodexAuthFailure` only matches ERROR lines and the
+  runner strips the prompt first.
+- Claude: a bad `CLAUDE_CODE_OAUTH_TOKEN` yields a stream-json `result` with
+  `is_error: true`, `api_error_status: 401`, and "Failed to authenticate. API
+  Error: 401 OAuth access token is invalid."; exit code 1, empty stderr.
+- OpenCode: a bad OpenRouter key exits 1 with empty stderr and a stdout JSON
+  event
+  `{"type":"error","error":{"name":"APIError","data":{"statusCode":401,
+  "message":"User not found."}}}`.
+  An empty key gives an opaque UnknownError.
+
+Sign-in failures become `AgentAuthError` and fall through to the next profile
+like usage exhaustion; the failure comment lists only fixed labels per profile.

.agents/memory/agents-md-and-damem.md

@@ -0,0 +1,39 @@
+---
+description: Every repo has AGENTS.md starting with the damem recall header; durable context lives in .agents/memory (flat, one fact per file) and .agents/skills
+---
+
+Standing convention (2026-10-12): every repo has an `AGENTS.md` whose first
+lines are exactly the damem header (cunarist/damem):
+
+```markdown
+At the start of every new session, run `damem recall` in the terminal and treat
+its output as the context for this repository. If the `damem` command is not
+found, read [INSTALL.md](https://github.com/cunarist/damem/blob/main/INSTALL.md)
+and follow it before reasoning or responding.
+```
+
+Below it: `# AGENTS.md`, then `## Project` (what the repo is, runtime,
+toolchain, where it came from) and `## Rules` (short bullets, each pointing at
+a memory where the reason lives). No `CLAUDE.md`, `GEMINI.md`, or other
+per-agent files; `AGENTS.md` is the single entry point.
+
+## `.agents/` layout
+
+- `memory/*.md`: one fact per file, flat (subdirectories are not listed),
+  frontmatter with a one-line `description` that states the fact. Link
+  related notes with double-bracket wiki links using the file name without
+  `.md`; a link to a missing note fails `damem doctor`.
+- `skills/<name>/SKILL.md`: frontmatter `name` and `description` (when to use
+  it), body says how. Helper scripts live next to it and are Python 3.12+.
+- `scratch/`: holds a `.gitignore` containing `*`.
+- Every memory and `SKILL.md` stays under 8 KB.
+
+## Keeping it right
+
+- Update an existing note instead of adding a near-duplicate; delete notes
+  that turn out wrong.
+- Write a note when the user corrects something, states a preference, or
+  when understanding something took reading many files.
+- Run `damem doctor` before finishing and fix what it reports.
+- Changing anything outside `.agents/` (source, config, `AGENTS.md`) follows
+  the normal branch and PR flow ([[git-pr-workflow]]).

.agents/memory/bot-agents-lint-opt-outs.md

@@ -0,0 +1,21 @@
+---
+description: bot-agents lint has prefer-readonly-parameter-types and the size/complexity rules off (Deno had no limits) and no overrides; nothing else
+---
+
+The repo follows [[lint-config-shape]] with one recorded exception, present
+when the migration PR was approved:
+
+- `typescript/prefer-readonly-parameter-types` is `"off"` in
+  `scripts/project-lint.ts`, as in the explicit-types template, because
+  Node/web types (`Response`, `Stats`, `RequestInit`) can never satisfy it.
+- `vite.config.ts` has no `overrides`. The `scripts/**` override for
+  `typescript/no-unsafe-enum-comparison` was removed (2026-10-16):
+  `scripts/project-lint.ts` compares node types with `AST_NODE_TYPES` members
+  from `@typescript-eslint/types` instead of string literals
+  ([[lint-overrides-policy]]).
+
+Size and complexity limits match Deno, which had none here, so every Oxlint
+limit rule is `"off"` ([[lint-config-shape]]). `run.ts` and `post.ts` keep
+main's single-file layout (2026-10-17 revert of the size splits). Sequential
+awaits in loops became recursion or a `reduce` chain (`no-await-in-loop`) to
+stay sequential. Add no other opt-out without the user.

.agents/memory/bot-agents-migration-decisions.md

@@ -0,0 +1,36 @@
+---
+description: bot-agents migration decisions: live @main action for six repos, JSON profiles, Node 24.2+, Deno kept only for agents, no eslint-plugin-* packages needed
+---
+
+Decisions for `commons/bot-agents` (Capsulizers Gitea), from the Deno to
+Node + Vite+ migration (PR #20, `node-migration`, 2026-10-15/16):
+
+- **Live action.** Six consumer repos use `commons/bot-agents@main`, so a merge
+  switches all of them at once. It changes only through a PR and a careful
+  review. Suggested before merging a risky change: tag the current `main`
+  (e.g. `deno-final`) as a rollback target and canary the branch from one
+  consumer (`uses: .../commons/bot-agents@<branch>`) on a throwaway PR.
+- **Profiles are JSON.** `profiles.yml` became `profiles.json` with the same
+  content (encrypted `v1:` values unchanged), read with `JSON.parse`. That
+  removed the only runtime dependency (`@std/yaml`); keep it free of runtime
+  dependencies (`@eslint/core` and the other devDependencies serve only the
+  tooling).
+- **Node 24.2+**, not 22: `src/post.ts` uses `import.meta.main`. There is no
+  `engines` (user decision 2026-10-18): the `node:24-bookworm` job image
+  decides the version ([[bot-agents-runtime-no-build]]).
+- **Deno stays in the action's global npm install** (`action.yml`), only
+  because the agents still check Deno-based consumer repos (memona,
+  memona-home). Remove it once those repos have moved; it is not a
+  dependency of this repo's TypeScript.
+- **No `eslint-plugin-*` packages** (`eslint-plugin-explicit-types`,
+  `eslint-plugin-import-structure`, `eslint-plugin-lit-robust`; unscoped
+  since 2026-10-18, formerly `@cunarist/...`). The Deno setup enabled no
+  plugin, so this repo depends on none and CI passes without them being
+  published. Planned (2026-10-17): once the plugins are on npm, add
+  `eslint-plugin-import-structure` (rule prefix `import-structure/`) here for
+  its import checks.
+- **Stricter input checks were accepted** in the migration: Gitea `/user` and
+  comment responses, the runtime manifest, and the outcome's profile type are
+  validated; some type errors became `TypeError` with the same messages.
+- Merging is the user's call; the `bot` account's approval is required first
+  ([[git-pr-workflow]]).

.agents/memory/bot-agents-node-command-shim.md

@@ -0,0 +1,25 @@
+---
+description: src/command.ts reproduces Deno.Command on child_process.spawn (stdio defaults, clearEnv, uid/gid, 128+signo); src/errors.ts maps NotFound to ENOENT/ESRCH
+---
+
+The Deno code was ported one for one; two small modules keep the old shapes
+so callers barely changed:
+
+- **`src/command.ts`** wraps `child_process.spawn` with `Deno.Command`'s API:
+  `output()` and `spawn()`, `clearEnv`, `uid`/`gid` (the agent isolation runs
+  each profile as its own UID, 20000+), and Deno's stdio defaults: stdin
+  inherited; stdout/stderr piped for `output()`, inherited for `spawn()`. A
+  signal exit maps to status `128 + signo`. Status settles on process exit,
+  not on stream close. Use it instead of calling `node:child_process`
+  directly so isolation and status handling stay uniform.
+- **`src/errors.ts`** replaces `Deno.errors.NotFound` checks with an
+  `ENOENT`/`ESRCH` code check.
+- `makeTempFile` became an exclusive `wx` create with mode `0600`.
+- `src/json.ts` holds type guards used instead of `as` casts on parsed JSON.
+- `process` and `Buffer` must come from `node:` imports:
+  `no-restricted-globals` in `scripts/project-lint.ts` maps Deno's
+  `no-window`/`no-process-global`/`no-node-globals` there
+  ([[lint-parity-never-shrinks]]).
+
+Related: how each agent CLI reports bad credentials is in
+[[agent-cli-auth-failures]].

.agents/memory/bot-agents-runtime-no-build.md

@@ -0,0 +1,31 @@
+---
+description: The action runs src/<phase>.ts directly with node on node:24-bookworm (no build); protect-source.sh copies only src/*.ts, package.json, profiles.json, prompt.md
+---
+
+`action.yml` is a composite action running three phases as
+`node "<source>/src/{prepare,run,post}.ts"`. Node's built-in type stripping
+runs the TypeScript; there is **no build step, no bundle, and no runtime
+dependency**. Hence `tsconfig.json` has `erasableSyntaxOnly` and
+`allowImportingTsExtensions`: only erasable syntax (no `enum`, no parameter
+properties, no decorators) and relative `.ts` imports.
+
+- **Image:** the steps assume the `node:24-bookworm` job container. Node must
+  be 24.2+ for `import.meta.main` in `post.ts`. That image is the only Node
+  pin (`package.json` has no `engines`); `check.yml` prints `node --version`
+  to confirm the cached image's minor.
+- **Root-owned source copy:** `scripts/protect-source.sh` copies the action
+  into `$RUNNER_TEMP` so an agent editing the checkout can't swap a later
+  phase. It copies exactly `src/*.ts`, `package.json` (`"type": "module"`
+  makes Node load the sources as ES modules), `profiles.json`, and
+  `prompt.md`. **A new runtime file or subdirectory must be added there**, or
+  it is missing at run time. Runtime code in `src/` is flat; a subfolder would
+  not be copied. The only subfolder, `src/testing/`, is test-only.
+- `tests/entrypoints.test.ts` runs each phase under real Node with a cleared
+  environment and expects its first "X is not set" error, which proves the
+  whole import graph loads without a build. Keep it in sync with the phases.
+- **None of the app build conventions apply here:** no `vp build`, no
+  frontend or Rust/Tauri output paths, no Containerfile, no decorators
+  plugin, no lit-check, no generated JS. Don't add any of them.
+- **CI** (`.gitea/workflows/check.yml`) runs on the self-hosted runner's
+  default image as root: `npm ci`, `npx vp check`, `npx vp test`. It does not
+  use `setup-vp`. YAML stays declarative ([[yaml-stays-declarative]]).

.agents/memory/bot-agents-tests-root-only.md

@@ -0,0 +1,25 @@
+---
+description: Isolation and credential tests need root and use test.skipIf(!IS_ROOT); locally 5 skip, CI runs as root so all 61 run; verify isolation changes in node:24-bookworm as root
+---
+
+Some tests exercise real UID isolation, process cleanup, and `prepare.ts`
+credential cleanup. They need root and are written as
+`test.skipIf(!IS_ROOT)(...)` (`IS_ROOT` from `#testing`), so they show
+as skipped instead of silently passing.
+
+- As a normal user `vp test` passes 56 and skips 5. In CI (self-hosted
+  runner, root) all 61 run.
+- When changing `isolation.ts`, `runtime.ts`, `credentials.ts`, `prepare.ts`,
+  or `command.ts`, run the suite as root in `node:24-bookworm` (e.g. a
+  container with the repo mounted) before pushing; a green non-root run
+  proves nothing about those paths.
+- The migration also ran an end-to-end smoke as root with fake
+  `codex`/`claude`/`npx` binaries and a fake Gitea through
+  `protect-source.sh` -> `prepare.ts` -> `run.ts` -> `post.ts`; repeat that
+  for changes to the phase flow ([[bot-agents-runtime-no-build]]).
+- `src/testing/index.ts` holds the shared test helpers (user IDs, temp dirs,
+  `runCommand`) behind the `#testing` alias. Every test imports it as
+  `#testing`. It imports no source module, so `tests/` (which may not use
+  `../`) never reaches internals. Tests follow
+  [[tests-layout-vitest]] (unit tests in `src/*.test.ts`, repo-level ones in
+  `tests/`).

.agents/memory/git-pr-workflow.md

@@ -0,0 +1,51 @@
+---
+description: Work on a branch, plain imperative commits without AI trailers, one PR with the Claude Code footer, review until approved, never merge yourself; squash only
+---
+
+## Branches and commits
+
+- Never push to `main`. Every change goes through a branch and a PR, even a
+  one-line fix.
+- Commit messages are plain imperative sentences ("Port the import-check
+  rules to an ESLint plugin"). No conventional-commit prefixes, no AI
+  trailers (`Co-Authored-By: Claude`, "Generated with ..."), no emoji.
+- When several agents share a branch, each works in its own `git worktree`,
+  runs `git pull --rebase` before pushing, and retries a rejected push after
+  rebasing. Remove the worktree and temp branch afterwards.
+- `vp check`, `vp test`, and the build pass locally before every push.
+
+## Pull requests
+
+- One PR per repo for a migration, everything included (size-rule refactors
+  too).
+- The body covers: summary, what changed, deviations and risks, verification
+  done, and open questions. It ends with exactly this line:
+
+  ```
+  🤖 Generated with [Claude Code](https://claude.com/claude-code)
+  ```
+
+- Then run the review cycle (skill `review-cycle`): on Capsulizers Gitea repos
+  that have `.gitea/workflows/agents.yml`, comment `@bot` and address the `bot`
+  account's review; elsewhere, a subagent reviews the diff and posts the
+  review as a PR comment. Repeat until fully approved, then ask the user to
+  review.
+
+## Merging
+
+- **Never merge on your own.** The user merges, unless they explicitly allow
+  it for one specific PR.
+- GitHub repos are squash-merge only, so a PR lands as one commit titled after
+  the PR.
+- Also never, without the user: publish, archive a repo, or delete a branch
+  the user may still use.
+
+## Hosts
+
+- **cunarist** and **temeddix**: GitHub only, CI in `.github/workflows`, use
+  the `gh` CLI.
+- **Capsulizers**: Gitea at git.capsulizers.com (Gitea 1.26), CI in
+  `.gitea/workflows`, PRs through the Gitea API. Push and open PRs as the
+  user's own account (credentials in the user's environment; source them in a
+  subshell and never print them); `bot` is a separate review account. The
+  org's codified rules live in the `commons/code-rules` README.

.agents/memory/imports-aliases-barrels.md

@@ -0,0 +1,104 @@
+---
+description: An alias owns its target (folder index.ts = folder and below, any other file = that file); no overlap; outside an area only the exact alias reaches it; ../ is banned in every file; locally, aliases target only direct src/ subfolders
+---
+
+## `#` aliases own their targets
+
+Shared code is imported through Node subpath imports declared in
+`package.json` `imports`. Node, TypeScript, Vite, Vite+'s config bundler, and
+Oxlint's plugin loader all resolve them natively, so `.ts` source runs
+unbuilt. `vp pack` inlines them, so they never reach package consumers.
+
+One rule for every file, never tied to folder or file names (user rule
+2026-10-17; it replaces the earlier "aliases only point at direct `src/`
+subfolders" rule as the general rule, and the "import-structure plugin
+checks only aliased folders" scope; this repo keeps the stricter rule as a
+local convention, see the last section):
+
+- **An alias may point anywhere** and owns its target. An alias to a
+  folder's `index.ts` owns that folder and everything below it; an alias to
+  any other file owns only that file.
+- **No overlap.** No file may be owned by 2 aliases: no alias inside another
+  alias's area, and no 2 aliases with the same target. The import-structure
+  plugin's `enforce-layer-order` reports it once at the top of every file 2
+  aliases claim. Fix by merging the aliases or moving files apart.
+- **Outside an area, only the exact alias reaches it.** A deeper alias
+  specifier (`#a/one.ts`, `no-barrel-bypass`) and a relative path into the
+  area (`./a/one.ts`, `no-relative-bypass`; `./b/f.ts` to a file alias,
+  `prefer-alias-import`, fixed to the alias) are bypasses.
+- **Inside an area, relative imports of siblings and subfolders are free.**
+- **A `../` import is banned in every file**, owned or not (`no-parent-import`).
+  Runtime file URLs (`new URL("../prompt.md", import.meta.url)`) are not
+  imports and are allowed.
+  Anything above a file needs an alias.
+- **Files no alias owns** need no `index.ts` and no alias, and import `./`
+  siblings and subfolders freely.
+- Unchanged: no `/*` subpath patterns, the key order of `imports` is the
+  layer order `enforce-layer-order` checks (add a new alias at the right
+  layer), and entry files are `index.ts` only.
+
+```jsonc
+"imports": {
+  "#a": "./a/index.ts",      // owns a/**
+  "#f": "./b/f.ts",          // owns only b/f.ts
+  "#a-sub": "./a/sub/index.ts", // no: inside #a
+  "#a2": "./a/index.ts"      // no: same target as #a
+}
+```
+
+```ts
+// in main.ts, which no alias owns
+import { a } from "#a"; // yes
+import { one } from "#a/one.ts"; // no: deeper alias specifier
+import { one } from "./a/one.ts"; // no: relative path into #a
+import { f } from "#f"; // yes
+import { f } from "./b/f.ts"; // no: relative path to a file alias
+import { g } from "./b/g.ts"; // yes: unowned
+// in a/one.ts, owned by #a
+import { two } from "./two.ts"; // yes: sibling
+import { deep } from "./sub/deep.ts"; // yes: subfolder of the same area
+import { x } from "../x.ts"; // no: no ../ anywhere
+```
+
+- Aliases point at `.ts` files only. There is no `#package` alias
+  ([[ts-only-files-and-imports]]).
+- Lint `jsPlugins` entries in `vite.config.ts` stay path strings, even when
+  the file has an alias.
+- Keep test-only helpers in their own alias (e.g. `#testing`) so they never
+  land in a bundle.
+
+## Barrels
+
+- An area used from outside exposes its API through its alias target, and
+  callers import the alias (`#ui`), not files inside it.
+- Barrels are also the standard fix for `import/max-dependencies`: one barrel
+  import replaces many direct ones ([[lint-overrides-policy]]).
+- `import/no-cycle` is on; a barrel must not create a cycle.
+
+Relative imports are written with the `.ts` extension.
+
+## `scripts/` is flat (user rule, 2026-10-16)
+
+- `scripts/` has no subfolders and no `index.ts`.
+- Each tool is one file, `scripts/<name>.ts`, imported directly by file:
+  `import projectLint from "./scripts/project-lint.ts";` in
+  `vite.config.ts`. No alias owns `scripts/`, so these `./` imports are free.
+- Code in a former `scripts/<tool>/` folder is merged or renamed into flat
+  `scripts/<name>.ts` files. Non-TS assets (HTML, images, fixtures) move to
+  where they belong (next to the tool's output, `.agents/`, or a gitignored
+  scratch dir). A subfolder that is really an app moves under an alias.
+
+## Local convention: aliases target direct `src/` subfolders
+
+This is a convention of this repo only, stricter than the general rule above
+(which the published import-structure plugin checks and which allows more).
+It is not a plugin rule.
+
+- Every `package.json` `imports` alias points only at the `index.ts` of a
+  direct subfolder of `src/`, e.g. `"#helpers": "./src/helpers/index.ts"`.
+  No alias to a single file, a deeper folder, or anything outside `src/`.
+  Here the one alias is `"#testing": "./src/testing/index.ts"`.
+- Code outside `src/` (`scripts/`, `tests/`, `vite.config.ts`) gets no alias
+  of its own and imports its own files by `./` relative paths. It reaches
+  `src/` only through the aliases, since `../` is banned.
+- No lint rule checks this; check `imports` by hand when adding an alias.

.agents/memory/lint-config-shape.md

@@ -0,0 +1,48 @@
+---
+description: vite.config.ts lint uses Oxlint categories at error with Deno size limits, names no rule itself, and spreads configs from the plugins and scripts/project-lint.ts
+---
+
+The lint config is short and category-driven (user decisions 2026-10-14/15):
+turn on whole categories, then list only what parity or a real need adds.
+
+```ts
+lint: {
+  plugins: ["typescript", "unicorn", "oxc", "import"],
+  jsPlugins: ["eslint-plugin-explicit-types", "./scripts/project-lint.ts"],
+  categories: { correctness: "error", suspicious: "error", pedantic: "error", perf: "error" },
+  rules: { ...explicitTypes.configs.concrete.rules, ...projectLint.configs.project.rules },
+  ignorePatterns: ["src/generated/**"], // generated files only, see below
+  options: { typeAware: true, typeCheck: true, maxWarnings: 0, reportUnusedDisableDirectives: "error" },
+},
+```
+
+- **Categories:** `correctness`, `suspicious`, `pedantic`, `perf` at `error`.
+  `style` and `restriction` are never turned on wholesale; pick single rules
+  from them in `configs.project`. Extra rules that categories bring are fine.
+- **Size limits match Deno** (2026-10-17, replaces the 2026-10-16 "default
+  limits stay"): repos behave as they did on Deno. bot-agents ran `deno lint`
+  with no config, so it had no size or complexity limit, and every Oxlint
+  limit rule (`complexity`, `max-lines`, `max-params`, `id-length`,
+  `no-nested-ternary`, `max-lines-per-function`, `max-classes-per-file`,
+  `max-depth`, `max-nested-callbacks`, `max-statements`,
+  `import/max-dependencies`, `unicorn/max-nested-calls`) is `"off"` in
+  `configs.project`. No file is split for size. Do not add new opt-outs
+  anywhere without asking the user.
+- **`vite.config.ts` names no rule.** Every rule id, built-in ones included,
+  lives in `configs.project` of `scripts/project-lint.ts`
+  ([[project-lint-plugin]]). `vite.config.ts` only spreads configs.
+- **Published plugins are consumed through their configs**: ESLint flat config
+  uses `plugin.configs.<name>`; Oxlint lists the package in `jsPlugins` and
+  spreads `plugin.configs.<name>.rules`, since Oxlint plugins carry no configs.
+  Use the configs equivalent to what the repo enabled under Deno.
+- **`maxWarnings: 0`** keeps Deno's "every diagnostic fails" behaviour.
+- **`ignorePatterns`** is only for generated files (compiled output, codegen).
+  Hand-written code is never ignored.
+- **No lint disable comments**: [[lint-no-disable-comments]].
+- **Parity:** [[lint-parity-never-shrinks]]. **Naming:** [[naming-id-match]].
+- Don't add a second import sorter; the import-structure plugin's
+  `enforce-import-order` is the only one, and Oxfmt's `sortImports` stays off.
+
+`perf` came last: in the template it flagged nine `.includes` on constant
+arrays, fixed as `ReadonlySet` + `.has()` rather than by turning a rule off.
+That is the expected response to any new rule: change the code.

.agents/memory/lint-no-disable-comments.md

@@ -0,0 +1,30 @@
+---
+description: Every eslint-/oxlint-disable or -enable comment is banned in every form; three checks enforce it together, keep all three
+---
+
+Banned (2026-10-16): `eslint-disable`, `eslint-disable-line`,
+`eslint-disable-next-line`, `eslint-enable`, and the same with `oxlint-`, as
+line or block comments, anywhere in the repo. Fix the code; if the code truly
+can't be fixed, ask the user, don't silence the rule. Old
+`deno-lint-ignore` lines are removed during the migration and their cause
+fixed.
+
+Oxlint (1.87) has no `noInlineConfig` and no `eslint-comments` rules, and
+`respectEslintDisableDirectives: false` only ignores `eslint-*` directives. So
+three checks enforce the ban together, and none is redundant:
+
+1. `project/no-disable-comments` (custom, in `scripts/project-lint.ts`) fails
+   any directive.
+2. `unicorn/no-abusive-eslint-disable` fails a directive that names no rule,
+   which would otherwise silence the custom rule on its own line.
+3. `options.reportUnusedDisableDirectives: "error"` fails a directive naming
+   `project/no-disable-comments` (the custom rule skips that one, so the
+   directive silences nothing and is reported as unused).
+
+Every form was probed and fails `vp check`.
+
+A rule that fires on legitimate code is a rule problem: change the rule or its
+options in `configs.project` with the user's agreement, not the call site.
+Known example: rule records are `Map`s keyed by id rather than object
+literals with kebab-case keys, which keeps naming rules happy without any
+directive.

.agents/memory/lint-overrides-policy.md

@@ -0,0 +1,33 @@
+---
+description: No lint overrides for source files; narrow ones only for scripts/**; generated files go in ignorePatterns; size limits match Deno, so nothing is split for size
+---
+
+Final policy (2026-10-16). The user considers per-file `overrides` bad
+practice.
+
+- **Source files: never.** No `overrides` entry may target `src/**` or any
+  other hand-written production or test code.
+- **The one exception** is in lint-plugin repos: `import/max-dependencies`
+  off for `src/rules/index.ts`, the rule registry, which must import every
+  rule. It is not a precedent for apps.
+- **`scripts/**`:** a narrow override is allowed when a tooling script truly
+  needs it, e.g. `no-console` in a CLI script.
+- **Generated files:** list them in `ignorePatterns`, never `overrides`.
+- **Anything else needs the user's approval first.** When the user is away,
+  don't add it: refactor, or leave the violation failing and log the question.
+
+## Fix the code instead
+
+Category rule violations are fixed in the code without behavior change,
+covered by the tests, inside the same migration PR; e.g. `prefer-set-has`
+becomes `const K: ReadonlySet<string> = new Set([...])` with `.has`.
+
+Size and complexity limits are not refactored for: they match what Deno
+enforced (2026-10-17, replacing the earlier "refactor to Oxlint's defaults"),
+which for bot-agents is none, so those rules are `"off"`
+([[lint-config-shape]]).
+
+Alias rule: an alias may point anywhere and owns its target (a folder's
+`index.ts` owns the folder and below, any other file owns only itself); no
+two aliases may own the same file, and `../` is banned everywhere
+([[imports-aliases-barrels]]).

.agents/memory/lint-parity-never-shrinks.md

@@ -0,0 +1,46 @@
+---
+description: Lint coverage never drops below what Deno enforced; every Deno rule maps to an Oxlint rule, a plugin rule, the compiler, or our own rule
+---
+
+Hard rule (2026-10-12): after the move, a repo has at least the lint coverage
+it had under Deno: built-in rules (the `recommended` and `jsr` tags plus
+opt-ins like `camelcase`, `eqeqeq`, `guard-for-in`, `no-console`,
+`no-eval`, `no-throw-literal`, `no-non-null-assertion`,
+`verbatim-module-syntax`), `@hugoalh` rules, and the custom plugins. Rules may
+be added, never lost. Formatting may change. "Gap" is not an acceptable end
+state: a Deno rule Oxlint lacks is replaced by a plugin rule or our own rule in
+[[project-lint-plugin]].
+
+Before removing any line from `configs.project`, find what else covers it.
+
+## How the template mapped Deno's 97 rules
+
+- **Same rule** in `configs.project` at `error`.
+- **Renamed equivalent:** `no-new-symbol` → `no-new-native-nonconstructor`;
+  `no-window` → `no-restricted-globals: ["error", "window"]`;
+  `ban-untagged-ignore` → `unicorn/no-abusive-eslint-disable`;
+  `ban-unused-ignore`, `ban-unknown-rule-code` →
+  `reportUnusedDisableDirectives`; `camelcase` → built-in `id-match`
+  ([[naming-id-match]]).
+- **Caught by the parser or `typeCheck`:** `no-dupe-args`, `no-octal`,
+  `no-await-in-sync-fn`, `no-import-assertions` (TS2880), `no-sloppy-imports`
+  (TS2835), `verbatim-module-syntax` (TS1484).
+- **`no-slow-types`:** `isolatedDeclarations`, enforced by `vp pack` (TS9010)
+  in packages.
+- **Vacuous:** JSX rules (no `.tsx` exists) and Deno-only rules.
+- **`@hugoalh` rules** map to Oxlint built-ins in `configs.project`.
+- **deno-import-check's CLI cycle check** → `import/no-cycle`.
+
+The template's list in `configs.project` is the baseline to copy: `curly`,
+`guard-for-in`, `no-console`, `no-empty`, `no-regex-spaces`,
+`no-restricted-globals`, `no-var`, `prefer-const`, `import/no-cycle`,
+`import/no-relative-parent-imports`, `typescript/adjacent-overload-signatures`,
+`typescript/consistent-type-imports`, `typescript/no-empty-interface`,
+`typescript/no-explicit-any`, `typescript/no-namespace`,
+`typescript/no-non-null-assertion`, the two `project/*` rules,
+`unicorn/no-abusive-eslint-disable`, `id-match`, and
+`typescript/switch-exhaustiveness-check` with
+`considerDefaultExhaustiveForUnions`.
+
+Each migration PR states its parity mapping (or links the template's table in
+cunarist/eslint-plugin-explicit-types#1) so the user can check it.

.agents/memory/naming-id-match.md

@@ -0,0 +1,48 @@
+---
+description: Deno's camelcase is Oxlint id-match ^_*[^_]*_*$|^[^a-z]*$; leading _ for unused vars; rename snake_case imports; PascalCase types; single-letter type params
+---
+
+Oxlint has no `camelcase`. Its built-in `id-match` replaces it, set in
+`configs.project` (user decision 2026-10-16, replacing a ~400-line port):
+
+```ts
+"id-match": ["error", "^_*[^_]*_*$|^[^a-z]*$", {
+  properties: false, classFields: false, onlyDeclarations: false,
+  ignoreDestructuring: true,
+}],
+```
+
+**Meaning** (Deno's `is_underscored`): after trimming leading and trailing
+underscores, the name has no `_`, **or** the name has no lowercase ASCII
+letter. `id-match` can't tell what kind of name it sees, so one regex accepts
+every valid style; other rules decide which style goes where.
+
+```ts
+const userName = 1; // ok
+class UserStore {} // ok here; pascal-case-types enforces PascalCase
+const MAX_SIZE = 10; // ok: no lowercase, so UPPER_SNAKE passes
+const _unused = 1; // ok: leading _ marks an unused binding
+const user_name = 1; // error
+```
+
+- **Leading underscores stay allowed** for unused parameters and variables
+  (`items.map((_item, index) => index)`). The user considered banning them and
+  kept them for exactly this.
+- **Rename snake_case imports at the import** (user wants this flagged):
+  `import { parse_args as parseArgs } from "some-lib";`
+- `declare` lines and snake_case globals are rare and accepted as they are.
+- **Types:** classes, interfaces, type aliases, enums are PascalCase
+  (`pascal-case-types` from explicit-types' `naming` config); string-union
+  members are UPPER_SNAKE_CASE; no `enum`.
+- **Type parameters:** the user wants single capital letters (`T`, `K`), not
+  `Item`; explicit-types PR 2 adds `single-capital-type-params` to `naming`.
+  Write new code that way already.
+- No autofix exists for `id-match`; rename by hand.
+
+**Known differences from Deno's `camelcase`** (against its 130 test cases):
+it misses 9 (unquoted object keys like `{ bar_baz: 1 }` and `{ bar_baz }`,
+shorthand destructuring in parameters, `{ a_b: a_b }`,
+`{ foo: bar_baz = 1 }`) and over-reports 17 (non-renamed imports, assignments
+to unresolved globals, 11 ambient `declare` cases). Beyond Deno it also checks
+type parameters, interface and type-literal members, class methods, and
+labels. The user accepted these differences.

.agents/memory/package-json-shape.md

@@ -0,0 +1,40 @@
+---
+description: package.json keys follow Oxfmt's standard order (vp check --fix); standard fields only; no peerDependencies or packageManager
+---
+
+## Key order (2026-10-16)
+
+Oxfmt's standard `package.json` sorting is accepted: there is no
+`fmt: { sortPackageJson: false }`, and `vp check --fix` sets the order. This
+replaces the earlier hand-written order (metadata, `scripts`, `exports`,
+`imports`, `devDependencies`, `dependencies`).
+
+The `imports` key order can carry meaning: the import-structure plugin's
+`enforce-layer-order` reads it as the layer order. Never reorder it casually.
+
+## Fields
+
+- **Standard fields only.** App repos have no `engines` field (user decision
+  2026-10-18; images pin Node, [[toolchain-node-vite-plus]]). Published
+  packages keep `engines` with only `node` (never `engines.bun`).
+  A tool-owned key (`eslint-doc-generator`) is allowed only because the tool
+  reads nothing else and no other config file is allowed.
+- **No `packageManager`.** npm is detected from `package-lock.json`.
+- **No `peerDependencies`, ever** (user preference, 2026-10-14). If something
+  is needed at runtime, it goes in `dependencies`.
+- **`dependencies`** = what runs or is type-referenced at runtime by consumers
+  (the lit-robust plugin ships `parse5`, `oxc-parser`, `oxc-resolver`, and
+  `@eslint/core` for its public types; they stay external, never bundled).
+- **`devDependencies`** = everything else: `vite-plus`, `eslint`,
+  `@typescript-eslint/parser`, `eslint-doc-generator`, `esbuild`,
+  `typescript-6`, `@types/node`. ESLint is a devDependency only; plugins need
+  nothing from it at runtime.
+
+Refresh the lockfile with `npm install` (or `npm install
+--package-lock-only` for a version bump) and commit it with the change.
+
+Alias rule: an alias may point anywhere and owns its target (a folder's
+`index.ts` owns the folder and everything below it; any other file owns only
+itself). No two aliases may own the same file, outside an area only the exact
+alias reaches it, and `../` is banned in every file
+([[imports-aliases-barrels]]).

.agents/memory/project-lint-plugin.md

@@ -0,0 +1,56 @@
+---
+description: scripts/project-lint.ts is the repo-local plugin "project" holding the repo's rule list (typed DummyRuleMap) and repo-only rules; never published, no tests
+---
+
+Every repo has `scripts/project-lint.ts`, copied from
+`cunarist/eslint-plugin-explicit-types` and extended. It is a repo-local
+Oxlint plugin with `meta.name` `"project"`, loaded through `jsPlugins` in
+`vite.config.ts`. It holds:
+
+- **`configs.project.rules`**: the repo's whole rule list beyond the published
+  plugin configs: Deno parity rules, extras, per-rule options, and opt-outs,
+  built-in Oxlint ids included (`curly`, `id-match`, `import/no-cycle`, ...).
+- **Custom rules**, enabled as `project/<rule>`. Every repo has
+  `no-disable-comments` and `no-asset-imports`; bot-agents has no others.
+
+`scripts/` stays flat; don't add `scripts/rules/`. If the plugin ever needs
+more files, they sit flat beside it and share the prefix
+(`project-lint-modules.ts`, ...); `scripts/project-lint.ts` keeps the plugin
+object and the rule list.
+
+```ts
+import type { DummyRuleMap } from "vite-plus/lint";
+
+const rules: DummyRuleMap = {
+  "id-match": ["error", "^_*[^_]*_*$|^[^a-z]*$", {/* ... */}],
+  curly: "error",
+  "project/no-disable-comments": "error",
+};
+
+const plugin = {
+  meta: { name: "project" },
+  rules: { "no-disable-comments": noDisableCommentsRule /* ... */ },
+  configs: { project: { rules } },
+};
+export default plugin;
+```
+
+## Why `DummyRuleMap` and an unannotated plugin (decided 2026-10-15)
+
+- `DummyRuleMap` (re-exported by `vite-plus/lint`) is Oxlint's type for
+  `OxlintConfig.rules`. Despite the name it lists every built-in rule with its
+  options, so a typo in a rule id or option is a type error, not just a CI
+  failure. Without it, TypeScript widens `"error"` to `string`; `as const`
+  doesn't help because Oxlint wants mutable tuples.
+- `@eslint/core`'s `Plugin` is too loose to read back: `configs` is optional,
+  any key may be missing, and a config may be an array, so
+  `projectLint.configs.project.rules` fails in `vite.config.ts` (and `!` is
+  banned). Optional chaining still leaves the array case.
+- Oxlint's own `Plugin` type (`vite-plus/lint/plugins`) has no `configs`.
+- Two hand-written interfaces worked but were dropped as noise; a plain
+  config object was rejected because custom rules need the plugin form anyway
+  and every repo should look the same.
+
+`scripts/` is tooling, not production code: never packed or published, and
+no tests. Narrow `overrides` for `scripts/**` are allowed when a script truly
+needs one (e.g. `no-console`); see [[lint-overrides-policy]].

.agents/memory/tests-layout-vitest.md

@@ -0,0 +1,39 @@
+---
+description: Vitest via vp test; unit tests sit next to code as *.test.ts, regression/integration tests in tests/ via the public entry (through its # alias, never ../); scripts/ has no tests
+---
+
+Decided 2026-10-14 for all repos.
+
+- **Runner:** Vitest through `vp test`. Import test APIs from
+  `vite-plus/test` (`describe`, `expect`, `it`).
+- **Unit tests** sit next to the code: `src/foo/bar.ts` is tested in
+  `src/foo/bar.test.ts`. Vitest's default include finds them; no `test`
+  config needed. Packages publish only `dist/`, so colocated tests cost nothing
+  in the tarball.
+- **Regression and integration tests** live in the top-level `tests/` folder
+  and use only the public entry point, imported through its `#` alias (e.g.
+  `#plugin` for `./src/plugin/index.ts`), never internals and never `../`,
+  which is banned in every file. `vp test tests` runs just these
+  ([[imports-aliases-barrels]]). In bot-agents, `tests/` imports only
+  `#testing` (`./src/testing/index.ts`), plain helpers that import no source
+  module.
+- **No in-source tests** (`import.meta.vitest`).
+- **`scripts/` gets no tests** (2026-10-15): it is repo tooling, not
+  production code (`project-lint.ts`, `protect-source.sh`).
+- Test files follow every lint rule; no relaxed overrides for tests.
+
+## Migrating Deno tests
+
+`Deno.test` suites were converted by a codemod
+(`~/.local/share/deno-migration/src/convert.ts` on the user's machine), then
+its TODOs finished by hand. Watch for:
+
+- `@std/assert` → `expect` (`assertEquals` → `toStrictEqual` or `toBe`,
+  `assertThrows` → `toThrow`, `assertRejects` → `rejects.toThrow`);
+- `Deno.*` file, env, and process APIs → `node:fs`, `process.env`,
+  `node:child_process`;
+- `t.step` → nested `describe`/`it`;
+- sanitizer options, which Vitest doesn't have.
+
+A migration PR must keep every test case; a dropped case is lost coverage.
+Tests must pass locally before any push.

.agents/memory/toolchain-node-vite-plus.md

@@ -0,0 +1,61 @@
+---
+description: Node.js (no engines in apps; images pin 24) with Vite+ (vp) and npm; only package.json, tsconfig.json, vite.config.ts plus a committed package-lock.json
+---
+
+## The stack
+
+- **Runtime:** Node.js. App repos have no `engines` field (user decision
+  2026-10-18): the container or runner image decides the version, so the
+  Containerfile base image (`node:24-alpine`) and CI's `node-version: "24"`
+  are the pins. Published packages (the lint plugins) keep their own
+  `engines.node` floor. `npm run lit-check` runs
+  `node scripts/lit-check.ts`, which needs Node 22.18+ (unflagged type
+  stripping and `module.registerHooks`); Node 24 satisfies it. Without
+  `engines` or a `.node-version`, local `vp` uses its default Node
+  (`vp env default`). bot-agents has no Containerfile or setup step: the
+  self-hosted runner's `node:24-bookworm` job image runs the action and its
+  checks, and `src/post.ts` needs 24.2+ (`import.meta.main`).
+- **Bun is not supported** (dropped 2026-10-15). No Bun CI legs, docs, or
+  runtime branches. Oxlint's `RuleTester` refuses to run under Bun anyway, and
+  `vp` brings its own Node, the way uv brings its own Python.
+- **Toolchain:** Vite+ (`vite-plus` devDependency, command `vp`): Vite,
+  Vitest, Oxlint, Oxfmt, type checking, tsdown.
+- **Package manager:** npm everywhere. `package-lock.json` is committed in
+  apps _and_ libraries (user agreed 2026-10-14: `npm ci` needs it). There is no
+  `packageManager` field; Vite+ detects npm from the lockfile.
+
+## Config files
+
+Exactly three, plus the lockfile: `package.json`, `tsconfig.json`,
+`vite.config.ts`. No `.oxlintrc.json`, `.prettierrc`, `eslint.config.*`,
+`vitest.config.*`, `.npmrc`, or `tsdown.config.*`. Tool options go into
+`vite.config.ts` keys (`lint`, `fmt`, `test`, `pack`) or, when a tool only
+reads `package.json` (eslint-doc-generator), into a `package.json` key.
+The target is a short `vite.config.ts`, around 30 lines (not strict).
+
+## Commands
+
+| Command                  | Does                                                       |
+| ------------------------ | ---------------------------------------------------------- |
+| `vp check`               | format check, Oxlint (type-aware), and type check together |
+| `vp check --fix`         | the same, applying formatting and safe fixes               |
+| `vp test`                | Vitest; `vp test tests` runs only the top-level `tests/`   |
+| `vp build`               | Vite production build (apps)                               |
+| `vp dev`                 | Vite dev server (apps)                                     |
+| `vp pack`                | tsdown library build into `dist/` (packages)               |
+| `npm ci` / `npm install` | install; never another package manager                     |
+
+`vp check`, `vp test`, and the build (`vp build` or `vp pack`) must all pass
+before any push. CI installs the toolchain with `voidzero-dev/setup-vp`.
+
+## Gotchas found during the migration
+
+- `vp check` does **not** report `isolatedDeclarations` errors (TS9010); only
+  `vp pack` does, so packages run `vp pack` in CI on every PR.
+- Oxfmt sorts `package.json` keys by default; that order is accepted, so
+  there is no `fmt` option for it ([[package-json-shape]]).
+- Oxlint and Oxfmt skip what `.gitignore` lists; that is the only reason
+  `dist/` and `node_modules/` are not linted. Keep build output gitignored.
+- Vite+ bundles `vite.config.ts` itself and resolves `#` imports in it.
+- Oxlint loads a `.ts` plugin file directly on Node 24 (`jsPlugins`), so
+  repo-local lint plugins need no build step.

.agents/memory/ts-only-files-and-imports.md

@@ -0,0 +1,59 @@
+---
+description: Every file is .ts (no js/mjs/cjs/jsx/tsx, configs included); imports name only .ts files or .js/.mts/.mjs package subpaths; CSS comes from HTML, JSON/SVG become .ts modules
+---
+
+The user's rule, from the Deno days and restated for Node (2026-10-12): "No
+JS, not even JSX/TSX, only TS." Source, scripts, tests, and configs are all
+plain `.ts`. Build output in a gitignored folder is the only JS.
+
+`tsconfig.json`: no `allowJs`, no `jsx`, and exactly this strictness set (user
+decision, 2026-10-18): `strict` (written out), `noUncheckedIndexedAccess`,
+`noPropertyAccessFromIndexSignature`, `noImplicitReturns`, `noUnusedLocals`,
+`noUnusedParameters`, `noImplicitOverride`, `noFallthroughCasesInSwitch`,
+`erasableSyntaxOnly`, and `allowUnreachableCode: false` plus
+`allowUnusedLabels: false` (user decision, 2026-10-18; on in the Deno setup),
+plus the mechanical `verbatimModuleSyntax`, `allowImportingTsExtensions`, and
+`noEmit` (packages also keep `declaration` and `isolatedDeclarations`).
+`exactOptionalPropertyTypes` is off everywhere: write `{ key: maybeUndefined }`
+rather than leaving the key out to please it. If a tool or framework seems to
+need a JS or TSX file, stop and flag it instead of adding one.
+
+## No asset imports (2026-10-14, widened 2026-10-16 and 2026-10-17)
+
+`project/no-asset-imports` (in `scripts/project-lint.ts`; it was
+`no-non-ts-imports` before 2026-10-16) fails:
+
+- a relative, absolute, `#`, or package-subpath specifier whose last segment
+  has an extension other than `.ts`, `.js`, `.mts`, or `.mjs`: `.css`,
+  `.json`, `.svg`, `.jsx`, `.tsx`, and every other asset;
+- any `?query` suffix (`?raw`, `?url`, `?inline`);
+- any import attributes (`with { type: "json" }`, `with { type: "text" }`).
+
+`.js`, `.mts`, and `.mjs` are allowed (user decision, 2026-10-17) for package
+subpaths such as `lit/decorators.js` or `pdfjs-dist/legacy/build/pdf.mjs`;
+our own files are still `.ts` only. `.jsx` and `.tsx` stay banned. Bare
+packages (`lit`, `@types/json-schema`, `lodash.debounce`), `#` aliases, and
+`node:` builtins pass. `@fortawesome/x/svgs/a.svg` fails.
+
+```ts
+import "./theme.css"; // no
+import data from "./scenes.json" with { type: "json" }; // no
+import icon from "./lock.svg?raw"; // no
+import { scenes } from "#data/scenes"; // yes: scenes.ts
+```
+
+## What to do instead
+
+- **CSS:** load it from HTML with `<link rel="stylesheet" href="...">`. Never
+  import CSS from TS, not even for Vite. (This also removes most of the
+  `import/no-unassigned-import` hits the `suspicious` category reports.)
+- **JSON data:** turn it into a `.ts` module exporting a typed constant.
+- **SVG:** a `.ts` module exporting the markup.
+- **`package.json` fields at runtime:** never `import pkg from
+  "./package.json"` and there is no `#package` alias. Write the value out in
+  `.ts` and add a test in `tests/` that reads `package.json` with `node:fs`
+  and fails on drift (the plugin repos do this for `meta.name`/`meta.version`).
+- **Reading a file is not importing it.** `readFileSync` + `JSON.parse` is
+  fine in tooling and tests.
+- **A tool's CLI file:** prefer the package entry or spawning the package's
+  bin over importing `pkg/cli.js`, which runs the CLI as a side effect.

.agents/memory/working-with-the-user.md

@@ -0,0 +1,53 @@
+---
+description: Ask one decision at a time with a code example, follow ESLint/ecosystem conventions and ask before deviating, keep config minimal, and never block when the user is away
+---
+
+## Asking
+
+- **One question at a time.** Each decision question stands alone, with the
+  options and a recommendation.
+- **Show code.** The user is new to the ESLint ecosystem and asked for
+  example code blocks whenever possible (2026-10-14): before/after snippets
+  or config examples, not prose alone.
+
+  ```ts
+  // A. per-file override          // B. refactor with a barrel
+  overrides: [{ files: [...] }]    import { a, b } from "#ui";
+  ```
+
+- **Keep answers short.** State the decision and what changed; detail belongs
+  in `.agents/memory/`, not chat.
+- The user often probes with "why?" and "is this the simplest form?". Have
+  the reason ready, and prefer the option with fewer lines, fewer files, and
+  fewer custom types when the result is equivalent.
+
+## Conventions over invention
+
+- Follow ESLint's and the wider ecosystem's conventions (typescript-eslint,
+  unicorn as references): `docs/rules/<rule>.md`, one plugin per package,
+  flat configs at `plugin.configs`, `meta.docs.url`, `index.ts` entries.
+- **Any deviation is a question, not a default**, even one carried over from
+  the Deno version. The user was unhappy when rule docs were quietly placed in
+  `src/` ("You should have asked me about this though. We should respect
+  ESLint's way").
+- Before finishing structural work, compare against well-known projects and
+  list every difference for the user.
+
+## When the user is away
+
+- **Never block on the user.** No approval requests, no waiting. Pick the
+  conservative option consistent with these notes, write the choice and its
+  reason in the PR or report, and continue. (An idle approval request once
+  cost hours; the user was emphatic.)
+- Log open questions where the user will look: the PR body, and the shared
+  questions file the coordinator names (during the migration,
+  `~/.local/share/deno-migration/morning-questions.md`).
+- Hard limits still hold without asking: no merging, no publishing, no
+  archiving, no pushing to `main`, no external state changes.
+
+## Working style the user expects from agents
+
+- Keep the main conversation free: repo edits, commits, and long checks run
+  in background subagents.
+- Fan independent work out to many parallel subagents (more than five when it
+  splits), each in its own worktree when they share a branch.

.agents/scratch/.gitignore

@@ -0,0 +1 @@
+*

.agents/skills/review-cycle/SKILL.md

@@ -0,0 +1,40 @@
+---
+name: review-cycle
+description: After opening a PR, run review rounds until fully approved; @bot on Capsulizers Gitea repos, an adversarial subagent review posted as a PR comment elsewhere; then hand to the user, never merge
+---
+
+Every PR gets reviewed before the user sees it. Repeat rounds until the
+review is a full approval (cap: 6 rounds; if still not approved, stop and
+report what remains). Never approve to finish early, and never merge.
+
+## Capsulizers repos (git.capsulizers.com) with `.gitea/workflows/agents.yml`
+
+1. Comment `@bot` on the PR through the Gitea API, as the user's own account
+   (credentials from the user's environment, sourced in a subshell, never
+   printed).
+2. Wait for the review from the `bot` account (poll about every 2 minutes,
+   up to about 30 minutes per round).
+3. For each point: fix valid ones with commits on the PR branch; reply
+   briefly with reasons to ones that are wrong.
+4. Re-run `vp check`, the build, and `vp test`, push, and comment `@bot`
+   again. Done when the bot approves.
+
+## Other repos (GitHub, or Gitea without the bot)
+
+1. Have a separate subagent review the **full PR diff** adversarially:
+   correctness, behavior changes, missed Deno APIs, broken build paths, lint
+   parity, and violations of the repo's `.agents/memory` rules.
+2. Post the review as a PR comment headed `Automated review (round N)`,
+   ending with exactly one verdict line: `VERDICT: APPROVED` or
+   `VERDICT: CHANGES REQUESTED`.
+3. Address every point with commits, re-run checks, push, and reply to the
+   review comment summarizing the fixes.
+4. Next round reviews from scratch, not just the fixes. Done when a round's
+   verdict is `APPROVED`.
+
+## After approval
+
+- Ask the user to review (or, when the user is away, list the PR and any open
+  questions in the report and the questions file). Don't wait idle.
+- The user merges (squash). Don't merge even after approval unless the user
+  explicitly allowed it for this PR.

.gitea/workflows/check.yml

@@ -5,17 +5,18 @@ on:
     branches: [main]
 
 jobs:
-  deno:
+  check:
     runs-on: self-hosted
     steps:
       - uses: actions/checkout@v4
 
-      - run: apt-get update && apt-get install -y unzip
+      # The action runs on this same image; src/post.ts needs Node 24.2+.
+      - run: node --version
 
-      - uses: denoland/setup-deno@v2
+      - run: npm ci
 
-      - run: >-
-          deno fmt --check . &&
-          deno lint . &&
-          deno check src/prepare.ts src/run.ts src/post.ts &&
-          deno test --allow-all
+      # Formatting, lint, and type checks, then every test. The job runs as
+      # root, so the isolation tests run rather than skip.
+      - run: npx vp check
+
+      - run: npx vp test

.gitignore

@@ -0,0 +1,2 @@
+node_modules/
+coverage/

AGENTS.md

@@ -0,0 +1,53 @@
+At the start of every new session, run `damem recall` in the terminal and treat
+its output as the context for this repository. If the `damem` command is not
+found, read [INSTALL.md](https://github.com/cunarist/damem/blob/main/INSTALL.md)
+and follow it before reasoning or responding.
+
+# Pull requests
+
+Land every change through a pull request. Immediately after creating one,
+comment `@bot` to request an AI-bot review. Wait for green CI and the bot's
+approval on the current head before merging. Never merge without the user's
+explicit permission.
+
+# Runtime and checks
+
+The action's TypeScript runs directly on the job image's Node.js (24.2 or
+newer; `package.json` has no `engines`, the `node:24-bookworm` image pins it),
+which strips the types itself: there is no build step and no runtime
+dependency. Keep the sources to erasable syntax and `.ts` imports, which
+`tsconfig.json` enforces. Its strictness set is fixed and leaves
+`exactOptionalPropertyTypes` off
+([.agents/memory/ts-only-files-and-imports.md](.agents/memory/ts-only-files-and-imports.md)).
+Checks use Vite+: `vp check` formats, lints, and type-checks, and `vp test`
+runs Vitest. Unit tests sit next to the code as `src/*.test.ts`;
+repository-level tests live in `tests/`.
+
+A `#` alias in `package.json` `imports` may point anywhere and owns its
+target: an alias to a folder's `index.ts` owns that folder and everything
+below it; an alias to any other file owns only that file. No overlap: no file
+may be owned by 2 aliases, so no alias inside another alias's area and no 2
+aliases with the same target. Outside an area, only the exact alias reaches
+it; a deeper alias specifier or a relative path into the area is a bypass.
+Inside an area, relative imports of siblings and subfolders are free. A `../`
+import is banned in every file, owned or not
+(`import/no-relative-parent-imports`); runtime file URLs such as
+`new URL("../prompt.md", import.meta.url)` are paths, not imports, and stay.
+Files no alias owns need no `index.ts` and no alias, and import `./` siblings
+and subfolders freely. The one alias is `#testing` (`./src/testing/index.ts`):
+tests that use its helpers import it by alias, and `tests/` imports `src/`
+only through it. Local convention, stricter than the general rule above: in
+this repo, aliases point only at a direct subfolder of `src/`
+(`"#helpers": "./src/helpers/index.ts"`), and code outside `src/` uses `./`
+relative imports. `scripts/` is flat: one file per tool, no subfolders and no `index.ts`, imported directly by file path
+([.agents/memory/imports-aliases-barrels.md](.agents/memory/imports-aliases-barrels.md)).
+
+The only config files are `package.json`, `tsconfig.json`, and
+`vite.config.ts`, plus `package-lock.json`. Repo-local lint rules and the rule
+list live in `scripts/project-lint.ts`. Lint disable comments are not allowed;
+fix the source instead.
+
+The composite action uses npm only to install the externally distributed
+Claude Code, Codex, and OpenCode command-line tools, plus Deno for agents that
+check Deno-based repositories; do not treat those vendor executables as
+repository TypeScript dependencies.

action.yml

@@ -15,10 +15,12 @@ runs:
       with:
         fetch-depth: 0
         token: ${{ gitea.token }}
-    # This step assumes this is `node:24-bookworm` container.
+    # This step assumes this is `node:24-bookworm` container. The action runs
+    # its TypeScript on that Node directly; Deno stays for the agents, which
+    # still check Deno-based repositories with it.
     - name: Install dependencies
       shell: bash
-      run: npm install -g @openai/codex @anthropic-ai/claude-code deno
+      run: npm install -g @openai/codex @anthropic-ai/claude-code opencode-ai deno
     # A local action lives inside the writable checkout. Execute a root-owned
     # copy so an agent changing this repository cannot replace a later phase.
     - name: Protect action source
@@ -34,7 +36,7 @@ runs:
     - name: Prepare credentials
       id: prepare
       shell: bash
-      run: deno run -A "${{ steps.source.outputs.path }}/src/prepare.ts"
+      run: node "${{ steps.source.outputs.path }}/src/prepare.ts"
       env:
         ACTION_PATH: ${{ steps.source.outputs.path }}
         BOT_AGENTS_MASTER_KEY: ${{ inputs.master-key }}
@@ -42,7 +44,7 @@ runs:
     - name: Run bot
       id: agent
       shell: bash
-      run: deno run -A "${{ steps.source.outputs.path }}/src/run.ts"
+      run: node "${{ steps.source.outputs.path }}/src/run.ts"
       env:
         BOT_AGENTS_MANIFEST: ${{ steps.prepare.outputs.manifest }}
         GITEA_TOKEN: ${{ gitea.token }}
@@ -55,7 +57,7 @@ runs:
       id: post
       if: always() && steps.prepare.outputs.manifest != ''
       shell: bash
-      run: deno run -A "${{ steps.source.outputs.path }}/src/post.ts"
+      run: node "${{ steps.source.outputs.path }}/src/post.ts"
       env:
         BOT_AGENTS_MANIFEST: ${{ steps.prepare.outputs.manifest }}
         GITEA_API_URL: ${{ gitea.api_url }}

package.json

@@ -0,0 +1,16 @@
+{
+  "name": "bot-agents",
+  "private": true,
+  "description": "A Gitea composite action that runs a coding agent for approved issue and pull request automation.",
+  "type": "module",
+  "imports": {
+    "#testing": "./src/testing/index.ts"
+  },
+  "devDependencies": {
+    "@eslint/core": "^0.17.0",
+    "@types/node": "^24.19.2",
+    "@typescript-eslint/types": "^8.71.2",
+    "vite-plus": "^1.2.0",
+    "yaml": "^2.9.1"
+  }
+}

profiles.json

@@ -0,0 +1,19 @@
+{
+  "reviewer-token": "v1:XFUvCI9PnXVaW-ig:_3S9BvXywUp29cVYGA_EzFScKwC5oHkV9x2Ld8k-V_uiG7iA8n3fmjXCArzh2Lz-JDgy3IMTHoY",
+  "profiles": [
+    {
+      "type": "codex",
+      "model": "gpt-5.6-terra"
+    },
+    {
+      "type": "claude",
+      "model": "claude-sonnet-5",
+      "token": "v1:-dyfF6ZicEhjPk4C:WCuMaGd09tYjtzUCl7abloRzPITvP5C35WpR372w3O_tcaD-ls-yV5sJBdU8iIVApZVCC98sY2gOyM3o9RMa8ciJq8Fuys7KxlYOp8QiluL9AYMSQi6rEsSH71EPWnxSACgo3uDQY8bWQpUlEZvXH9O-ZN9A58dh6b3vRg"
+    },
+    {
+      "type": "opencode",
+      "model": "openrouter/qwen/qwen3.8-27b",
+      "token": "v1:4qdfJCdUx9jfiabC:8X0ic_J82lPlq_R3uTLaEbQy7UmEh7BgtG0bDKAcc8FeJ0xvEwkGCKaDoLmT5nta03hgjGdcWKjDdOSMi1kSDfp8J7tRTLtMRzDT8GX8OU_PVDPVahQIAU0"
+    }
+  ]
+}

profiles.yml

@@ -1,7 +0,0 @@
-reviewer-token: v1:XFUvCI9PnXVaW-ig:_3S9BvXywUp29cVYGA_EzFScKwC5oHkV9x2Ld8k-V_uiG7iA8n3fmjXCArzh2Lz-JDgy3IMTHoY
-profiles:
-  - type: claude
-    model: claude-sonnet-5
-    token: v1:-dyfF6ZicEhjPk4C:WCuMaGd09tYjtzUCl7abloRzPITvP5C35WpR372w3O_tcaD-ls-yV5sJBdU8iIVApZVCC98sY2gOyM3o9RMa8ciJq8Fuys7KxlYOp8QiluL9AYMSQi6rEsSH71EPWnxSACgo3uDQY8bWQpUlEZvXH9O-ZN9A58dh6b3vRg
-  - type: codex
-    model: gpt-5.6-terra

scripts/project-lint.ts

@@ -0,0 +1,266 @@
+/**
+ * `project` — lint rules this repository holds its own source to, on top of
+ * the Oxlint categories in `vite.config.ts`. Its rules of its own are
+ * `no-disable-comments` and `no-asset-imports`.
+ *
+ * Loaded by `vite.config.ts` as an Oxlint `jsPlugins` entry.
+ *
+ * @module
+ */
+
+import type { LanguageOptions, RuleDefinition, RuleVisitor, TextSourceCode } from "@eslint/core";
+import { AST_NODE_TYPES, type TSESTree } from "@typescript-eslint/types";
+import type { DummyRuleMap } from "vite-plus/lint";
+
+/** The source code both hosts hand a rule, with the comment list. */
+interface ProjectSourceCode extends TextSourceCode {
+  getAllComments(): TSESTree.Comment[];
+}
+
+/** ESLint's default rule types, reporting TypeScript-ESTree nodes. */
+interface ProjectRuleTypes {
+  LangOptions: LanguageOptions;
+  Code: ProjectSourceCode;
+  RuleOptions: [];
+  Visitor: RuleVisitor;
+  Node: TSESTree.Node;
+  MessageIds: string;
+  ExtRuleDocs: unknown;
+}
+
+/** A repo-local rule, in ESLint's standard `create` form. */
+type ProjectRule = RuleDefinition<ProjectRuleTypes>;
+
+/** A comment that turns lint rules off or back on, in ESLint or Oxlint form. */
+const DIRECTIVE_PATTERN: RegExp = /^\s*(?:eslint|oxlint)-(?:disable|enable)/u;
+
+/** This rule's own name, which a directive may not use to silence it. */
+const RULE_NAME: string = "no-disable-comments";
+
+/**
+ * `no-disable-comments` — rejects every `eslint-disable*`, `eslint-enable*`,
+ * `oxlint-disable*`, and `oxlint-enable*` comment, line or block. Oxlint has
+ * no `noInlineConfig` and no `eslint-comments` rules, so this repo bans them
+ * itself: when a rule fires, fix the source.
+ *
+ * A directive can silence the report on itself, so two built-in checks close
+ * the gaps: `unicorn/no-abusive-eslint-disable` fails one that names no rule,
+ * and this rule skips one that names it, which then silences nothing and fails
+ * `reportUnusedDisableDirectives` in `vite.config.ts`.
+ */
+const noDisableCommentsRule: ProjectRule = {
+  meta: {
+    type: "problem",
+    docs: { description: "Disallow lint disable and enable comments" },
+    schema: [],
+    messages: { directive: "Lint disable comments are not allowed; fix the source." },
+  },
+  create(context) {
+    return {
+      Program(_node: TSESTree.Program): void {
+        for (const comment of context.sourceCode.getAllComments()) {
+          if (DIRECTIVE_PATTERN.test(comment.value) && !comment.value.includes(RULE_NAME)) {
+            context.report({ loc: comment.loc, messageId: "directive" });
+          }
+        }
+      },
+    };
+  },
+};
+
+/** A module specifier read as a path: relative, absolute, or a `#` alias. */
+const PATH_SPECIFIER_PATTERN: RegExp = /^[./#]/u;
+
+/**
+ * Script module extensions an import may name: our `.ts` files and `.js`,
+ * `.mts`, or `.mjs` package subpaths. `.cts`, `.cjs`, `.tsx`, and `.jsx` are
+ * not among them.
+ */
+const SCRIPT_EXTENSIONS: ReadonlySet<string> = new Set([".ts", ".js", ".mts", ".mjs"]);
+
+/**
+ * Whether `source` names an asset rather than a script module: a query string
+ * such as `?raw`, or a final path segment whose extension, from its last dot,
+ * is not `.ts`, `.js`, `.mts`, or `.mjs`. Bare package names are left alone,
+ * dots and all, as are extensionless paths.
+ */
+function isAssetSource(source: string): boolean {
+  if (source.includes("?")) {
+    return true;
+  }
+  const segments: string[] = source.split("/");
+  if (!PATH_SPECIFIER_PATTERN.test(source)) {
+    const nameLength: number = source.startsWith("@") ? 2 : 1;
+    if (segments.length <= nameLength) {
+      return false;
+    }
+  }
+  const lastSegment: string = segments.at(-1) ?? "";
+  if (lastSegment === "." || lastSegment === ".." || !lastSegment.includes(".")) {
+    return false;
+  }
+  const extension: string = lastSegment.slice(lastSegment.lastIndexOf("."));
+  return !SCRIPT_EXTENSIONS.has(extension);
+}
+
+/**
+ * `no-asset-imports` — rejects importing anything but a script module: a
+ * source path, static or a dynamic `import()` with a string literal, ending in
+ * an extension other than `.ts`, `.js`, `.mts`, or `.mjs` (`.css`, `.json`,
+ * `.svg`, `.jsx`, `.tsx`, `.cjs`) or carrying a query string (`?raw`, `?url`),
+ * and any import or export with import attributes. `.js`, `.mts`, and `.mjs`
+ * cover package subpaths such as `lit/decorators.js` or
+ * `pdfjs-dist/legacy/build/pdf.mjs`; our own files are still `.ts` only. Bare
+ * package names, `#` aliases, and `node:` builtins
+ * without an extension pass; package subpaths are checked like paths.
+ */
+const noAssetImportsRule: ProjectRule = {
+  meta: {
+    type: "problem",
+    docs: { description: "Disallow importing assets instead of .ts, .js, .mts, or .mjs modules" },
+    schema: [],
+    messages: {
+      extension: "Only .ts, .js, .mts and .mjs modules may be imported.",
+      attributes: "Import attributes are not allowed.",
+    },
+  },
+  create(context) {
+    function checkSource(source: TSESTree.StringLiteral): void {
+      if (isAssetSource(source.value)) {
+        context.report({ node: source, messageId: "extension" });
+      }
+    }
+    function checkDeclaration(
+      node:
+        | TSESTree.ImportDeclaration
+        | TSESTree.ExportNamedDeclaration
+        | TSESTree.ExportAllDeclaration,
+    ): void {
+      if (node.source === null) {
+        return;
+      }
+      checkSource(node.source);
+      if (node.attributes.length > 0) {
+        context.report({ node, messageId: "attributes" });
+      }
+    }
+    return {
+      ImportDeclaration: checkDeclaration,
+      ExportNamedDeclaration: checkDeclaration,
+      ExportAllDeclaration: checkDeclaration,
+      ImportExpression(node: TSESTree.ImportExpression): void {
+        if (node.source.type === AST_NODE_TYPES.Literal && typeof node.source.value === "string") {
+          checkSource(node.source);
+        }
+        if (node.options !== null) {
+          context.report({ node, messageId: "attributes" });
+        }
+      },
+    };
+  },
+};
+
+/**
+ * This repository's own rule list, spread by `vite.config.ts`: rules that
+ * sit outside the Oxlint categories, plus the template's extras. Built-in
+ * Oxlint rule ids sit here too, so `vite.config.ts` lists no rule by name.
+ */
+const rules: DummyRuleMap = {
+  // The explicit-types template's `camelcase` stand-in: no `_` inside a name
+  // once leading and trailing ones are trimmed, unless it has no lowercase
+  // ASCII letter (UPPER_SNAKE).
+  "id-match": [
+    "error",
+    "^_*[^_]*_*$|^[^a-z]*$",
+    { properties: false, classFields: false, onlyDeclarations: false, ignoreDestructuring: true },
+  ],
+  // Rules outside the categories.
+  "no-array-constructor": "error",
+  "no-case-declarations": "error",
+  "no-empty": "error",
+  "no-fallthrough": "error",
+  "no-inner-declarations": "error",
+  "no-prototype-builtins": "error",
+  "no-redeclare": "error",
+  "no-regex-spaces": "error",
+  "no-var": "error",
+  "prefer-const": "error",
+  "require-await": "error",
+  "require-yield": "error",
+  "typescript/adjacent-overload-signatures": "error",
+  "typescript/ban-ts-comment": "error",
+  "typescript/no-empty-interface": "error",
+  "typescript/no-empty-object-type": "error",
+  "typescript/no-explicit-any": "error",
+  "typescript/no-namespace": "error",
+  "typescript/no-non-null-asserted-optional-chain": "error",
+  "typescript/no-unsafe-function-type": "error",
+  "typescript/no-wrapper-object-types": "error",
+  "typescript/prefer-as-const": "error",
+  "typescript/prefer-namespace-keyword": "error",
+  "typescript/triple-slash-reference": "error",
+  // On Node, these come from an explicit `node:` import instead of the global scope.
+  "no-restricted-globals": [
+    "error",
+    "window",
+    "process",
+    "Buffer",
+    "global",
+    "setImmediate",
+    "clearImmediate",
+  ],
+  // The explicit-types template's extras.
+  "import/no-cycle": "error",
+  // `../` is banned in every file; anything above a file needs a `#` alias.
+  "import/no-relative-parent-imports": "error",
+  "typescript/consistent-type-imports": "error",
+  "typescript/no-import-type-side-effects": "error",
+  "typescript/no-non-null-assertion": "error",
+  // No disable comments at all.
+  "project/no-disable-comments": "error",
+  "project/no-asset-imports": "error",
+  "unicorn/no-abusive-eslint-disable": "error",
+  // Size and complexity limits match Deno's: this repo's `deno lint` ran the
+  // `recommended` set with no config file, so no size or complexity rule
+  // applied and none applies here. Each Oxlint limit rule, from a category or
+  // not, is off:
+  // - `complexity`: Deno had no `max-complexity`.
+  // - `max-lines`: Deno had no `max-file-lines`.
+  // - `max-params`: Deno had no `max-params`.
+  // - `id-length`: Deno had no `max-identifier-length`.
+  // - `no-nested-ternary`: Deno had no `max-nest-ternaries`.
+  // - `max-lines-per-function`, `max-classes-per-file`, `max-depth`,
+  //   `max-nested-callbacks`, `max-statements`, `import/max-dependencies`,
+  //   `unicorn/max-nested-calls`: Deno had none of these.
+  complexity: "off",
+  "max-lines": "off",
+  "max-params": "off",
+  "id-length": "off",
+  "no-nested-ternary": "off",
+  "max-lines-per-function": "off",
+  "max-classes-per-file": "off",
+  "max-depth": "off",
+  "max-nested-callbacks": "off",
+  "max-statements": "off",
+  "import/max-dependencies": "off",
+  "unicorn/max-nested-calls": "off",
+  // Pedantic, but Node's and the web's own types (`Response`, `Stats`,
+  // `RequestInit`) are mutable, so no parameter of theirs can pass; the
+  // explicit-types template and the app repos turn it off too.
+  "typescript/prefer-readonly-parameter-types": "off",
+};
+
+/**
+ * The repo-local plugin, namespace `project`: its own rules, enabled as
+ * `project/<rule>`, and `configs.project`, the rule list above.
+ */
+const plugin = {
+  meta: { name: "project" },
+  rules: {
+    "no-disable-comments": noDisableCommentsRule,
+    "no-asset-imports": noAssetImportsRule,
+  },
+  configs: { project: { rules } },
+};
+
+export default plugin;

scripts/protect-source.sh

@@ -4,6 +4,7 @@ set -euo pipefail
 path=$(mktemp -d "${RUNNER_TEMP}/bot-agents-source-XXXXXX")
 mkdir "${path}/src"
 cp -a "${ACTION_PATH}"/src/*.ts "${path}/src/"
-cp -a "${ACTION_PATH}/profiles.yml" "${ACTION_PATH}/prompt.md" "${path}/"
+# package.json makes Node load the TypeScript sources as ES modules.
+cp -a "${ACTION_PATH}/package.json" "${ACTION_PATH}/profiles.json" "${ACTION_PATH}/prompt.md" "${path}/"
 chmod -R go-w "${path}"
 printf 'path=%s\n' "${path}" >> "${GITHUB_OUTPUT}"

src/auth.test.ts

@@ -0,0 +1,178 @@
+import { expect, test } from "vite-plus/test";
+import { mkdir, readFile, rm, stat, symlink, writeFile } from "node:fs/promises";
+
+import {
+  codexAuthentication,
+  isClaudeAuthFailure,
+  isCodexAuthFailure,
+  persistCodexAuth,
+  retryInvalidToken,
+  stageCodexAuth,
+} from "./auth.ts";
+import { currentGid, currentUid, IS_WINDOWS, makeTempDir } from "#testing";
+
+test("retries once after an invalid refresh token", async () => {
+  let attempts = 0;
+  let relogins = 0;
+  const result = await retryInvalidToken(
+    () =>
+      Promise.resolve({
+        status: { success: false },
+        error: attempts++ === 0 ? "ERROR: invalid_refresh_token" : "still failed",
+      }),
+    () => {
+      relogins++;
+      return Promise.resolve();
+    },
+  );
+
+  expect({ attempts, relogins, error: result.error }).toStrictEqual({
+    attempts: 2,
+    relogins: 1,
+    error: "still failed",
+  });
+});
+
+test("does not retry an unrelated failure", async () => {
+  let attempts = 0;
+  let relogins = 0;
+  await retryInvalidToken(
+    () => {
+      attempts++;
+      return Promise.resolve({
+        status: { success: false },
+        error: "rate limited",
+      });
+    },
+    () => {
+      relogins++;
+      return Promise.resolve();
+    },
+  );
+
+  expect({ attempts, relogins }).toStrictEqual({ attempts: 1, relogins: 0 });
+});
+
+// Verbatim stderr lines from the revoked-login job on lead/memona-home#36.
+const REVOKED_CODEX = [
+  `2026-10-12T02:28:04.702126Z ERROR codex_models_manager::manager: failed to refresh available models: unexpected status 401 Unauthorized: Encountered invalidated oauth token for user, failing request, url: https://chatgpt.com/backend-api/codex/models?client_version=0.162.1, cf-ray: a492ab48fdefea25-ICN, request id: req_4caa104fe9184a63bb8877f42817172d, auth error: 401, auth error code: token_revoked`,
+  `2026-10-12T02:28:05.082447Z ERROR codex_login::auth::manager: Failed to refresh token status=401 Unauthorized detail=TokenErrorDetail { error_code: Some("refresh_token_invalidated"), error_message: Some("Your session has ended. Please log in again."), .. }`,
+  `2026-10-12T02:28:05.451678Z ERROR rmcp::transport::worker: worker quit with fatal: Transport channel closed, when UnexpectedServerResponse("HTTP 401: {\\n  \\"error\\": {\\n    \\"message\\": \\"Encountered invalidated oauth token for user, failing request\\",\\n    \\"type\\": null,\\n    \\"code\\": \\"token_revoked\\",\\n    \\"param\\": null\\n  },\\n  \\"status\\": 401\\n}")`,
+  "ERROR: workspace routing discovery unauthorized (401)",
+];
+
+test("recognizes each Codex sign-in failure line", () => {
+  for (const line of [
+    ...REVOKED_CODEX,
+    `2026-10-12T02:28:05Z ERROR codex_login::auth::manager: Failed to refresh token status=401 Unauthorized detail=TokenErrorDetail { error_code: Some("refresh_token_expired"), .. }`,
+    `ERROR: Your access token could not be refreshed because your refresh token was already used. Please log out and sign in again. (refresh_token_reused)`,
+    "ERROR: unexpected status 401 Unauthorized: Incorrect API key provided: sk-inval*d123., auth error: 401, auth error code: invalid_api_key",
+  ]) {
+    expect(isCodexAuthFailure(`exec\n${line}\n`), line).toBe(true);
+  }
+});
+
+test("ignores auth words outside Codex error lines", () => {
+  expect(
+    isCodexAuthFailure(
+      "exec\ncurl returned 401 Unauthorized\ntoken_revoked in fixture\nERROR: tests failed\n",
+    ),
+  ).toBe(false);
+});
+
+test("re-logs in after the job 9837 revoked-session stderr", async () => {
+  let relogins = 0;
+  let attempts = 0;
+  const result = await retryInvalidToken(
+    () =>
+      Promise.resolve({
+        status: { success: attempts++ > 0 },
+        error: attempts === 1 ? REVOKED_CODEX.join("\n") : "",
+      }),
+    () => {
+      relogins++;
+      return Promise.resolve();
+    },
+  );
+
+  expect({ relogins, success: result.status.success }).toStrictEqual({
+    relogins: 1,
+    success: true,
+  });
+});
+
+test("recognizes a rejected Claude OAuth token", () => {
+  expect(
+    isClaudeAuthFailure({
+      api_error_status: 401,
+      result: "Failed to authenticate. API Error: 401 OAuth access token is invalid.",
+    }),
+  ).toBe(true);
+  expect(
+    isClaudeAuthFailure({
+      result: "OAuth token has expired. Please obtain a new token or refresh your existing token.",
+    }),
+  ).toBe(true);
+  expect(isClaudeAuthFailure({ api_error_status: 429, result: "API Error: 429" })).toBe(false);
+});
+
+test("selects API-key login only for a configured Codex token", () => {
+  expect(codexAuthentication("selected-key")).toStrictEqual({
+    kind: "api-key",
+    token: "selected-key",
+  });
+  expect(codexAuthentication()).toStrictEqual({ kind: "persistent" });
+});
+
+const AUTH_TOKENS = {
+  access_token: "access",
+  refresh_token: "refresh",
+  id_token: "id",
+  account_id: "account",
+};
+const AUTH = JSON.stringify({ auth_mode: "chatgpt", tokens: AUTH_TOKENS });
+
+test.skipIf(IS_WINDOWS)("stages and persists only a regular private Codex login", async () => {
+  const root = await makeTempDir();
+  try {
+    const canonical = `${root}/persistent/auth.json`;
+    await mkdir(`${root}/persistent`);
+    await writeFile(canonical, AUTH, { mode: 0o600 });
+    const home = `${root}/profile`;
+    await mkdir(home);
+
+    const staged = await stageCodexAuth(canonical, home, currentUid(), currentGid());
+    expect(await readFile(staged, "utf8")).toStrictEqual(AUTH);
+    expect((await stat(staged)).mode & 0o777).toBe(0o600);
+
+    const refreshed = JSON.stringify({
+      auth_mode: "chatgpt",
+      tokens: { ...AUTH_TOKENS, access_token: "refreshed" },
+    });
+    await writeFile(staged, refreshed);
+    await persistCodexAuth(staged, canonical);
+    expect(await readFile(canonical, "utf8")).toStrictEqual(refreshed);
+    expect((await stat(canonical)).mode & 0o777).toBe(0o600);
+  } finally {
+    await rm(root, { recursive: true });
+  }
+});
+
+test.skipIf(IS_WINDOWS)("rejects a symlink or malformed Codex login", async () => {
+  const root = await makeTempDir();
+  try {
+    const canonical = `${root}/auth.json`;
+    const malformed = `${root}/malformed.json`;
+    const linked = `${root}/linked.json`;
+    await writeFile(canonical, AUTH, { mode: 0o600 });
+    await writeFile(malformed, '{"tokens":{}}', { mode: 0o600 });
+    await symlink(canonical, linked);
+
+    await expect(() => persistCodexAuth(linked, canonical)).rejects.toThrow("regular file");
+    await expect(() => persistCodexAuth(malformed, canonical)).rejects.toThrow(
+      "invalid Codex login",
+    );
+  } finally {
+    await rm(root, { recursive: true });
+  }
+});

src/auth.ts

@@ -1,22 +1,59 @@
-import { dirname, join } from "jsr:@std/path@1";
+import { randomUUID } from "node:crypto";
+import {
+  chmod,
+  chown,
+  lstat,
+  mkdir,
+  open,
+  readFile,
+  rename,
+  rm,
+  writeFile,
+} from "node:fs/promises";
+import { dirname, join } from "node:path";
 
-export type CodexAuthentication =
-  | { kind: "api-key"; token: string }
-  | { kind: "persistent" };
+import { isNotFound } from "./errors.ts";
+import { isObject } from "./json.ts";
+
+export type CodexAuthentication = { kind: "api-key"; token: string } | { kind: "persistent" };
 
 export function codexAuthentication(token?: string): CodexAuthentication {
-  return token === undefined
-    ? { kind: "persistent" }
-    : { kind: "api-key", token };
+  return token === undefined ? { kind: "persistent" } : { kind: "api-key", token };
 }
 
-export async function retryInvalidToken<
-  T extends { status: { success: boolean }; error: string },
->(attempt: () => Promise<T>, relogin: () => Promise<void>): Promise<T> {
+// Codex logs revoked, expired, or reused ChatGPT sign-ins and rejected API keys
+// on its own ERROR lines; tool output and the echoed prompt must not count.
+const CODEX_AUTH_FAILURE =
+  /^(?:\S+\s+)?ERROR\b.*(?:\b401\b|unauthorized|invalid_refresh_token|refresh_token_(?:expired|reused|invalidated)|token_(?:revoked|expired)|invalid_api_key|(?:log|sign) in again)/imu;
+
+export function isCodexAuthFailure(error: string): boolean {
+  return CODEX_AUTH_FAILURE.test(error);
+}
+
+// Claude Code reports a rejected CLAUDE_CODE_OAUTH_TOKEN as an is_error
+// stream-json result, e.g. "Failed to authenticate. API Error: 401 OAuth
+// access token is invalid." with api_error_status 401.
+// The fields of Claude Code's stream-json `result` event that tell a sign-in
+// failure apart, under their own names.
+export type ClaudeFailureFields = Partial<Record<"api_error_status", number | null>> & {
+  result?: string;
+};
+
+export function isClaudeAuthFailure(result: ClaudeFailureFields): boolean {
+  return (
+    result.api_error_status === 401 ||
+    /failed to authenticate|oauth (?:access )?token (?:is invalid|has expired)|invalid api key|authentication_error|please run \/login|not logged in/iu.test(
+      result.result ?? "",
+    )
+  );
+}
+
+export async function retryInvalidToken<T extends { status: { success: boolean }; error: string }>(
+  attempt: () => Promise<T>,
+  relogin: () => Promise<void>,
+): Promise<T> {
   let result = await attempt();
-  if (
-    !result.status.success && result.error.includes("invalid_refresh_token")
-  ) {
+  if (!result.status.success && isCodexAuthFailure(result.error)) {
     await relogin();
     result = await attempt();
   }
@@ -24,26 +61,26 @@ export async function retryInvalidToken<
 }
 
 async function readCodexAuth(path: string): Promise<string> {
-  const stat = await Deno.lstat(path);
-  if (!stat.isFile || stat.isSymlink) {
+  const stat = await lstat(path);
+  if (!stat.isFile() || stat.isSymbolicLink()) {
     throw new Error("Codex login must be a regular file");
   }
-  if ((stat.mode! & 0o077) !== 0) {
+  if ((stat.mode & 0o077) !== 0) {
     throw new Error("Codex login must be private");
   }
-  const text = await Deno.readTextFile(path);
+  const text = await readFile(path, "utf8");
   let value: unknown;
   try {
     value = JSON.parse(text);
   } catch {
     throw new Error("invalid Codex login");
   }
-  const record = value as Record<string, unknown> | null;
-  const tokens = record?.tokens as Record<string, unknown> | null;
+  const tokens = isObject(value) ? value["tokens"] : undefined;
   if (
-    record === null || typeof record !== "object" ||
-    typeof record.auth_mode !== "string" || record.auth_mode === "" ||
-    tokens === null || typeof tokens !== "object" ||
+    !isObject(value) ||
+    typeof value["auth_mode"] !== "string" ||
+    value["auth_mode"] === "" ||
+    !isObject(tokens) ||
     !["access_token", "refresh_token", "id_token", "account_id"].every(
       (name) => typeof tokens[name] === "string" && tokens[name] !== "",
     )
@@ -60,36 +97,39 @@ export async function stageCodexAuth(
   gid: number,
 ): Promise<string> {
   const codexHome = join(profileHome, ".codex");
-  await Deno.mkdir(codexHome, { recursive: true, mode: 0o700 });
-  await Deno.chmod(codexHome, 0o700);
-  await Deno.chown(codexHome, uid, gid);
+  await mkdir(codexHome, { recursive: true, mode: 0o700 });
+  await chmod(codexHome, 0o700);
+  await chown(codexHome, uid, gid);
   const stagedPath = join(codexHome, "auth.json");
   try {
-    await Deno.writeTextFile(stagedPath, await readCodexAuth(canonicalPath), {
-      mode: 0o600,
-    });
-    await Deno.chmod(stagedPath, 0o600);
-    await Deno.chown(stagedPath, uid, gid);
+    await writeFile(stagedPath, await readCodexAuth(canonicalPath), { mode: 0o600 });
+    await chmod(stagedPath, 0o600);
+    await chown(stagedPath, uid, gid);
   } catch (error) {
-    if (!(error instanceof Deno.errors.NotFound)) throw error;
+    if (!isNotFound(error)) throw error;
   }
   return stagedPath;
 }
 
-export async function persistCodexAuth(
-  stagedPath: string,
-  canonicalPath: string,
-): Promise<void> {
+// Creates an empty private file under a fresh name, as Deno.makeTempFile did.
+async function makeTempFile(directory: string): Promise<string> {
+  const path = join(directory, `.tmp-${randomUUID()}`);
+  const handle = await open(path, "wx", 0o600);
+  await handle.close();
+  return path;
+}
+
+export async function persistCodexAuth(stagedPath: string, canonicalPath: string): Promise<void> {
   const text = await readCodexAuth(stagedPath);
   const directory = dirname(canonicalPath);
-  await Deno.mkdir(directory, { recursive: true, mode: 0o700 });
-  const temporary = await Deno.makeTempFile({ dir: directory });
+  await mkdir(directory, { recursive: true, mode: 0o700 });
+  const temporary = await makeTempFile(directory);
   try {
-    await Deno.writeTextFile(temporary, text, { mode: 0o600 });
-    await Deno.chmod(temporary, 0o600);
-    await Deno.rename(temporary, canonicalPath);
+    await writeFile(temporary, text, { mode: 0o600 });
+    await chmod(temporary, 0o600);
+    await rename(temporary, canonicalPath);
   } catch (error) {
-    await Deno.remove(temporary).catch(() => undefined);
+    await rm(temporary).catch(() => {});
     throw error;
   }
 }

src/auth_test.ts

@@ -1,125 +0,0 @@
-import { assertEquals, assertRejects } from "jsr:@std/assert@1";
-import {
-  codexAuthentication,
-  persistCodexAuth,
-  retryInvalidToken,
-  stageCodexAuth,
-} from "./auth.ts";
-
-Deno.test("retries once after an invalid refresh token", async () => {
-  let attempts = 0;
-  let relogins = 0;
-  const result = await retryInvalidToken(
-    () =>
-      Promise.resolve({
-        status: { success: false },
-        error: attempts++ === 0 ? "invalid_refresh_token" : "still failed",
-      }),
-    () => {
-      relogins++;
-      return Promise.resolve();
-    },
-  );
-
-  assertEquals({ attempts, relogins, error: result.error }, {
-    attempts: 2,
-    relogins: 1,
-    error: "still failed",
-  });
-});
-
-Deno.test("does not retry an unrelated failure", async () => {
-  let attempts = 0;
-  let relogins = 0;
-  await retryInvalidToken(
-    () => {
-      attempts++;
-      return Promise.resolve({
-        status: { success: false },
-        error: "rate limited",
-      });
-    },
-    () => {
-      relogins++;
-      return Promise.resolve();
-    },
-  );
-
-  assertEquals({ attempts, relogins }, { attempts: 1, relogins: 0 });
-});
-
-Deno.test("selects API-key login only for a configured Codex token", () => {
-  assertEquals(codexAuthentication("selected-key"), {
-    kind: "api-key",
-    token: "selected-key",
-  });
-  assertEquals(codexAuthentication(undefined), { kind: "persistent" });
-});
-
-const AUTH = JSON.stringify({
-  auth_mode: "chatgpt",
-  tokens: {
-    access_token: "access",
-    refresh_token: "refresh",
-    id_token: "id",
-    account_id: "account",
-  },
-});
-
-Deno.test("stages and persists only a regular private Codex login", async () => {
-  if (Deno.build.os === "windows") return;
-  const root = await Deno.makeTempDir();
-  try {
-    const canonical = `${root}/persistent/auth.json`;
-    await Deno.mkdir(`${root}/persistent`);
-    await Deno.writeTextFile(canonical, AUTH, { mode: 0o600 });
-    const home = `${root}/profile`;
-    await Deno.mkdir(home);
-
-    const staged = await stageCodexAuth(
-      canonical,
-      home,
-      Deno.uid()!,
-      Deno.gid()!,
-    );
-    assertEquals(await Deno.readTextFile(staged), AUTH);
-    assertEquals((await Deno.stat(staged)).mode! & 0o777, 0o600);
-
-    const refreshed = JSON.stringify({
-      ...JSON.parse(AUTH),
-      tokens: { ...JSON.parse(AUTH).tokens, access_token: "refreshed" },
-    });
-    await Deno.writeTextFile(staged, refreshed);
-    await persistCodexAuth(staged, canonical);
-    assertEquals(await Deno.readTextFile(canonical), refreshed);
-    assertEquals((await Deno.stat(canonical)).mode! & 0o777, 0o600);
-  } finally {
-    await Deno.remove(root, { recursive: true });
-  }
-});
-
-Deno.test("rejects a symlink or malformed Codex login", async () => {
-  if (Deno.build.os === "windows") return;
-  const root = await Deno.makeTempDir();
-  try {
-    const canonical = `${root}/auth.json`;
-    const malformed = `${root}/malformed.json`;
-    const linked = `${root}/linked.json`;
-    await Deno.writeTextFile(canonical, AUTH, { mode: 0o600 });
-    await Deno.writeTextFile(malformed, '{"tokens":{}}', { mode: 0o600 });
-    await Deno.symlink(canonical, linked);
-
-    await assertRejects(
-      () => persistCodexAuth(linked, canonical),
-      Error,
-      "regular file",
-    );
-    await assertRejects(
-      () => persistCodexAuth(malformed, canonical),
-      Error,
-      "invalid Codex login",
-    );
-  } finally {
-    await Deno.remove(root, { recursive: true });
-  }
-});

src/command.ts

@@ -0,0 +1,160 @@
+// A child process with the call shapes the runner was reviewed with: `output()`
+// collects both streams, `spawn()` hands them out, and `clearEnv` passes only
+// the given environment. Streams default as Deno's did: stdin is inherited,
+// stdout and stderr are piped for `output()` and inherited for `spawn()`.
+import { spawn as spawnProcess } from "node:child_process";
+import type { ChildProcess, StdioOptions } from "node:child_process";
+import { Buffer } from "node:buffer";
+import { constants } from "node:os";
+import process from "node:process";
+import type { Readable, Writable } from "node:stream";
+import { buffer } from "node:stream/consumers";
+import { finished } from "node:stream/promises";
+
+export type StdioMode = "inherit" | "piped" | "null";
+
+export interface CommandOptions {
+  args?: string[];
+  cwd?: string;
+  env?: Record<string, string>;
+  clearEnv?: boolean;
+  uid?: number;
+  gid?: number;
+  stdin?: StdioMode;
+  stdout?: StdioMode;
+  stderr?: StdioMode;
+}
+
+export interface CommandStatus {
+  success: boolean;
+  code: number;
+}
+
+export interface CommandOutput extends CommandStatus {
+  stdout: Uint8Array;
+  stderr: Uint8Array;
+}
+
+export interface CommandChild {
+  status: Promise<CommandStatus>;
+  stdin: Writable;
+  stdout: Readable;
+  stderr: Readable;
+}
+
+const STDIO: Record<StdioMode, "inherit" | "pipe" | "ignore"> = {
+  inherit: "inherit",
+  piped: "pipe",
+  null: "ignore",
+};
+
+function signalNumber(signal: NodeJS.Signals): number {
+  return constants.signals[signal];
+}
+
+function startProcess(
+  command: string,
+  options: CommandOptions,
+  outputDefault: StdioMode,
+): ChildProcess {
+  const stdio: StdioOptions = [
+    STDIO[options.stdin ?? "inherit"],
+    STDIO[options.stdout ?? outputDefault],
+    STDIO[options.stderr ?? outputDefault],
+  ];
+  const environment = options.clearEnv === true ? options.env : { ...process.env, ...options.env };
+  return spawnProcess(command, options.args ?? [], {
+    stdio,
+    ...(options.cwd !== undefined && { cwd: options.cwd }),
+    ...(environment !== undefined && { env: environment }),
+    ...(options.uid !== undefined && { uid: options.uid }),
+    ...(options.gid !== undefined && { gid: options.gid }),
+  });
+}
+
+// Settles when the process exits, before its streams close, as Deno's did. A
+// signal-killed process reports 128 plus the signal number, as a shell does.
+function waitForStatus(child: ChildProcess): Promise<CommandStatus> {
+  return new Promise((resolve, reject) => {
+    child.once("error", reject);
+    child.once("exit", (code, signal) => {
+      const exitCode = code ?? (signal === null ? 1 : 128 + signalNumber(signal));
+      resolve({ success: exitCode === 0, code: exitCode });
+    });
+  });
+}
+
+function piped<T>(stream: T | null, name: string): T {
+  if (stream === null) {
+    throw new TypeError(`${name} is not piped`);
+  }
+  return stream;
+}
+
+function collect(stream: Readable | null): Promise<Uint8Array> {
+  return stream === null ? Promise.resolve(new Uint8Array()) : buffer(stream);
+}
+
+// A stream's chunks as bytes, whether or not it has an encoding set.
+export async function* chunks(stream: Readable): AsyncGenerator<Uint8Array> {
+  for await (const chunk of stream) {
+    const value: unknown = chunk;
+    if (value instanceof Uint8Array) {
+      yield value;
+    } else if (typeof value === "string") {
+      yield Buffer.from(value);
+    }
+  }
+}
+
+export function spawn(command: string, options: CommandOptions = {}): CommandChild {
+  const child = startProcess(command, options, "inherit");
+  const status = waitForStatus(child);
+  // A failed start rejects `status`; the caller sees it once it awaits that.
+  status.catch(() => {});
+  return {
+    status,
+    get stdin(): Writable {
+      return piped(child.stdin, "stdin");
+    },
+    get stdout(): Readable {
+      return piped(child.stdout, "stdout");
+    },
+    get stderr(): Readable {
+      return piped(child.stderr, "stderr");
+    },
+  };
+}
+
+export async function output(
+  command: string,
+  options: CommandOptions = {},
+): Promise<CommandOutput> {
+  const child = startProcess(command, options, "piped");
+  const [status, stdout, stderr] = await Promise.all([
+    waitForStatus(child),
+    collect(child.stdout),
+    collect(child.stderr),
+  ]);
+  return { ...status, stdout, stderr };
+}
+
+// Writes one chunk and settles once the stream has taken it, as Deno's
+// `Deno.stdout.write` did.
+export async function writeChunk(stream: Writable, chunk: Uint8Array): Promise<void> {
+  await new Promise<void>((resolve, reject) => {
+    stream.write(chunk, (error) => {
+      if (error) {
+        reject(error);
+      } else {
+        resolve();
+      }
+    });
+  });
+}
+
+// Writes the last chunk and settles once the stream has flushed and closed.
+export async function endWith(stream: Writable, chunk: string): Promise<void> {
+  stream.end(chunk);
+  await finished(stream);
+}

src/credentials.test.ts

@@ -0,0 +1,68 @@
+import { expect, test } from "vite-plus/test";
+import { decryptCredential, encryptCredential, parseCredentials } from "./credentials.ts";
+
+const MASTER_KEY = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8";
+const OTHER_KEY = "AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE";
+const NONCE = Uint8Array.from({ length: 12 }, (_, index) => index + 32);
+const ENCRYPTED = "v1:ICEiIyQlJicoKSor:oV_FAgnsN3p1FyegJxwGVdyjfyPio6qDeSUwbA";
+
+test("decrypts a known AES-256-GCM credential", async () => {
+  expect(await decryptCredential(ENCRYPTED, MASTER_KEY)).toBe("secret-token");
+});
+
+test("encrypts a credential with a fresh supplied nonce", async () => {
+  expect(await encryptCredential("secret-token", MASTER_KEY, NONCE)).toStrictEqual(ENCRYPTED);
+});
+
+test("rejects a credential encrypted by another master key", async () => {
+  await expect(() => decryptCredential(ENCRYPTED, OTHER_KEY)).rejects.toThrow();
+});
+
+test("rejects a credential with a nonstandard nonce", async () => {
+  await expect(() =>
+    decryptCredential("v1:AA:oV_FAgnsN3p1FyegJxwGVdyjfyPio6qDeSUwbA", MASTER_KEY),
+  ).rejects.toThrow("nonce must be 12 bytes");
+});
+
+test("decrypts the central reviewer token and ordered profiles", async () => {
+  expect(
+    await parseCredentials(
+      JSON.stringify({
+        "reviewer-token": ENCRYPTED,
+        profiles: [
+          { type: "codex", model: "gpt-custom" },
+          { type: "claude", token: ENCRYPTED },
+          { type: "opencode", token: ENCRYPTED },
+        ],
+      }),
+      MASTER_KEY,
+    ),
+  ).toStrictEqual({
+    reviewerToken: "secret-token",
+    profiles: [
+      { type: "codex", model: "gpt-custom" },
+      {
+        type: "claude",
+        model: "claude-sonnet-5",
+        token: "secret-token",
+      },
+      {
+        type: "opencode",
+        model: "openrouter/qwen/qwen3.8-27b",
+        token: "secret-token",
+      },
+    ],
+  });
+});
+
+test("rejects malformed central credentials", async () => {
+  await expect(() => parseCredentials('{"profiles": []}', MASTER_KEY)).rejects.toThrow(
+    "reviewer-token",
+  );
+  await expect(() =>
+    parseCredentials(
+      JSON.stringify({ "reviewer-token": ENCRYPTED, profiles: [{ type: "claude" }] }),
+      MASTER_KEY,
+    ),
+  ).rejects.toThrow("profiles[0].token");
+});

src/credentials.ts

@@ -1,59 +1,48 @@
-import { parse } from "jsr:@std/yaml@1";
+import { webcrypto } from "node:crypto";
+
+import { isMapping } from "./json.ts";
 import type { BotProfile } from "./profiles.ts";
 
 const DEFAULT_MODELS: Record<BotProfile["type"], string> = {
   claude: "claude-sonnet-5",
   codex: "gpt-5.6-terra",
+  opencode: "openrouter/qwen/qwen3.8-27b",
 };
 
-export type BotCredentials = {
+export interface BotCredentials {
   reviewerToken: string;
   profiles: BotProfile[];
-};
+}
 
 function decodeBase64Url(value: string): Uint8Array {
   const base64 = value.replaceAll("-", "+").replaceAll("_", "/");
   const padded = base64.padEnd(Math.ceil(base64.length / 4) * 4, "=");
-  return Uint8Array.from(atob(padded), (character) => character.charCodeAt(0));
+  return Uint8Array.from(atob(padded), (character) => character.codePointAt(0) ?? 0);
 }
 
 function encodeBase64Url(value: Uint8Array): string {
-  const binary = Array.from(value, (byte) => String.fromCharCode(byte)).join(
-    "",
-  );
-  return btoa(binary).replaceAll("+", "-").replaceAll("/", "_")
-    .replaceAll("=", "");
+  const binary = Array.from(value, (byte) => String.fromCodePoint(byte)).join("");
+  return btoa(binary).replaceAll("+", "-").replaceAll("/", "_").replaceAll("=", "");
 }
 
-const buffer = (value: Uint8Array): ArrayBuffer =>
-  Uint8Array.from(value).buffer;
+const buffer = (value: Uint8Array): ArrayBuffer => Uint8Array.from(value).buffer;
 
-async function importMasterKey(
-  encoded: string,
-  usage: KeyUsage,
-): Promise<CryptoKey> {
+function importMasterKey(encoded: string, usage: webcrypto.KeyUsage): Promise<webcrypto.CryptoKey> {
   const bytes = decodeBase64Url(encoded);
   if (bytes.length !== 32) {
     throw new Error("master-key must be 32 bytes encoded as base64url");
   }
-  return await crypto.subtle.importKey("raw", buffer(bytes), "AES-GCM", false, [
-    usage,
-  ]);
+  return webcrypto.subtle.importKey("raw", buffer(bytes), "AES-GCM", false, [usage]);
 }
 
-export async function decryptCredential(
-  encrypted: string,
-  masterKey: string,
-): Promise<string> {
-  const [version, encodedNonce, encodedCiphertext, extra] = encrypted.split(
-    ":",
-  );
-  if (version !== "v1" || !encodedNonce || !encodedCiphertext || extra) {
+export async function decryptCredential(encrypted: string, masterKey: string): Promise<string> {
+  const [version, encodedNonce = "", encodedCiphertext = "", extra = ""] = encrypted.split(":");
+  if (version !== "v1" || encodedNonce === "" || encodedCiphertext === "" || extra !== "") {
     throw new Error("credential must use v1:<nonce>:<ciphertext>");
   }
   const nonce = decodeBase64Url(encodedNonce);
   if (nonce.length !== 12) throw new Error("credential nonce must be 12 bytes");
-  const plaintext = await crypto.subtle.decrypt(
+  const plaintext = await webcrypto.subtle.decrypt(
     { name: "AES-GCM", iv: buffer(nonce) },
     await importMasterKey(masterKey, "decrypt"),
     buffer(decodeBase64Url(encodedCiphertext)),
@@ -64,75 +53,68 @@ export async function decryptCredential(
 export async function encryptCredential(
   plaintext: string,
   masterKey: string,
-  nonce: Uint8Array = crypto.getRandomValues(new Uint8Array(12)),
+  nonce: Uint8Array = webcrypto.getRandomValues(new Uint8Array(12)),
 ): Promise<string> {
   if (nonce.length !== 12) throw new Error("AES-GCM nonce must be 12 bytes");
-  const ciphertext = await crypto.subtle.encrypt(
+  const ciphertext = await webcrypto.subtle.encrypt(
     { name: "AES-GCM", iv: buffer(nonce) },
     await importMasterKey(masterKey, "encrypt"),
     new TextEncoder().encode(plaintext),
   );
-  return `v1:${encodeBase64Url(nonce)}:${
-    encodeBase64Url(new Uint8Array(ciphertext))
-  }`;
+  return `v1:${encodeBase64Url(nonce)}:${encodeBase64Url(new Uint8Array(ciphertext))}`;
 }
 
-export async function parseCredentials(
-  text: string,
-  masterKey: string,
-): Promise<BotCredentials> {
-  const value: unknown = parse(text);
-  if (typeof value !== "object" || value === null || Array.isArray(value)) {
-    throw new Error("credentials must be a mapping");
+async function parseProfile(entry: unknown, index: number, masterKey: string): Promise<BotProfile> {
+  const at = `profiles[${index}]`;
+  if (!isMapping(entry)) {
+    throw new TypeError(`${at}: expected a mapping`);
   }
-  const record = value as Record<string, unknown>;
-  for (const key of Object.keys(record)) {
+  for (const key of Object.keys(entry)) {
+    if (key !== "type" && key !== "model" && key !== "token") {
+      throw new Error(`${at}.${key}: unknown field`);
+    }
+  }
+  const { type, model, token } = entry;
+  if (type !== "claude" && type !== "codex" && type !== "opencode") {
+    throw new Error(`${at}.type: expected "claude", "codex", or "opencode"`);
+  }
+  if (model !== undefined && (typeof model !== "string" || model === "")) {
+    throw new Error(`${at}.model: expected a model name`);
+  }
+  if ((type === "claude" || type === "opencode") && typeof token !== "string") {
+    throw new Error(`${at}.token: expected an encrypted credential`);
+  }
+  if (token !== undefined && typeof token !== "string") {
+    throw new Error(`${at}.token: expected an encrypted credential`);
+  }
+  return {
+    type,
+    model: model ?? DEFAULT_MODELS[type],
+    ...(typeof token === "string" && {
+      token: await decryptCredential(token, masterKey),
+    }),
+  };
+}
+
+export async function parseCredentials(text: string, masterKey: string): Promise<BotCredentials> {
+  const value: unknown = JSON.parse(text);
+  if (!isMapping(value)) {
+    throw new TypeError("credentials must be a mapping");
+  }
+  for (const key of Object.keys(value)) {
     if (key !== "reviewer-token" && key !== "profiles") {
       throw new Error(`${key}: unknown field`);
     }
   }
-  if (typeof record["reviewer-token"] !== "string") {
-    throw new Error("reviewer-token: expected an encrypted credential");
+  const { "reviewer-token": reviewerToken, profiles } = value;
+  if (typeof reviewerToken !== "string") {
+    throw new TypeError("reviewer-token: expected an encrypted credential");
   }
-  if (!Array.isArray(record.profiles) || record.profiles.length === 0) {
+  if (!Array.isArray(profiles) || profiles.length === 0) {
     throw new Error("profiles must contain at least one profile");
   }
-  const profiles = await Promise.all(
-    record.profiles.map(async (entry: unknown, index): Promise<BotProfile> => {
-      const at = `profiles[${index}]`;
-      if (typeof entry !== "object" || entry === null || Array.isArray(entry)) {
-        throw new Error(`${at}: expected a mapping`);
-      }
-      const profile = entry as Record<string, unknown>;
-      for (const key of Object.keys(profile)) {
-        if (key !== "type" && key !== "model" && key !== "token") {
-          throw new Error(`${at}.${key}: unknown field`);
-        }
-      }
-      const { type, model, token } = profile;
-      if (type !== "claude" && type !== "codex") {
-        throw new Error(`${at}.type: expected \"claude\" or \"codex\"`);
-      }
-      if (model !== undefined && (typeof model !== "string" || model === "")) {
-        throw new Error(`${at}.model: expected a model name`);
-      }
-      if (type === "claude" && typeof token !== "string") {
-        throw new Error(`${at}.token: expected an encrypted credential`);
-      }
-      if (token !== undefined && typeof token !== "string") {
-        throw new Error(`${at}.token: expected an encrypted credential`);
-      }
-      return {
-        type,
-        model: model ?? DEFAULT_MODELS[type],
-        ...(typeof token === "string" && {
-          token: await decryptCredential(token, masterKey),
-        }),
-      };
-    }),
+  const parsed = await Promise.all(
+    profiles.map((entry: unknown, index) => parseProfile(entry, index, masterKey)),
   );
-  return {
-    reviewerToken: await decryptCredential(record["reviewer-token"], masterKey),
-    profiles,
-  };
+  return { reviewerToken: await decryptCredential(reviewerToken, masterKey), profiles: parsed };
 }

src/credentials_test.ts

@@ -1,85 +0,0 @@
-import { assertEquals, assertRejects } from "jsr:@std/assert@1";
-import {
-  decryptCredential,
-  encryptCredential,
-  parseCredentials,
-} from "./credentials.ts";
-
-const MASTER_KEY = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8";
-const OTHER_KEY = "AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQE";
-const NONCE = Uint8Array.from({ length: 12 }, (_, index) => index + 32);
-const ENCRYPTED = "v1:ICEiIyQlJicoKSor:oV_FAgnsN3p1FyegJxwGVdyjfyPio6qDeSUwbA";
-
-Deno.test("decrypts a known AES-256-GCM credential", async () => {
-  assertEquals(
-    await decryptCredential(ENCRYPTED, MASTER_KEY),
-    "secret-token",
-  );
-});
-
-Deno.test("encrypts a credential with a fresh supplied nonce", async () => {
-  assertEquals(
-    await encryptCredential("secret-token", MASTER_KEY, NONCE),
-    ENCRYPTED,
-  );
-});
-
-Deno.test("rejects a credential encrypted by another master key", async () => {
-  await assertRejects(() => decryptCredential(ENCRYPTED, OTHER_KEY));
-});
-
-Deno.test("rejects a credential with a nonstandard nonce", async () => {
-  await assertRejects(
-    () =>
-      decryptCredential(
-        "v1:AA:oV_FAgnsN3p1FyegJxwGVdyjfyPio6qDeSUwbA",
-        MASTER_KEY,
-      ),
-    Error,
-    "nonce must be 12 bytes",
-  );
-});
-
-Deno.test("decrypts the central reviewer token and ordered profiles", async () => {
-  assertEquals(
-    await parseCredentials(
-      `
-reviewer-token: ${ENCRYPTED}
-profiles:
-  - type: claude
-    token: ${ENCRYPTED}
-  - type: codex
-    model: gpt-custom
-`,
-      MASTER_KEY,
-    ),
-    {
-      reviewerToken: "secret-token",
-      profiles: [
-        {
-          type: "claude",
-          model: "claude-sonnet-5",
-          token: "secret-token",
-        },
-        { type: "codex", model: "gpt-custom" },
-      ],
-    },
-  );
-});
-
-Deno.test("rejects malformed central credentials", async () => {
-  await assertRejects(
-    () => parseCredentials("profiles: []", MASTER_KEY),
-    Error,
-    "reviewer-token",
-  );
-  await assertRejects(
-    () =>
-      parseCredentials(
-        `reviewer-token: ${ENCRYPTED}\nprofiles:\n  - type: claude`,
-        MASTER_KEY,
-      ),
-    Error,
-    "profiles[0].token",
-  );
-});

src/errors.ts

@@ -0,0 +1,8 @@
+// Node reports a missing file as ENOENT and a missing process as ESRCH, where
+// Deno threw `Deno.errors.NotFound` for both.
+export function isNotFound(error: unknown): boolean {
+  if (!(error instanceof Error) || !("code" in error)) {
+    return false;
+  }
+  return error.code === "ENOENT" || error.code === "ESRCH";
+}

src/isolation.test.ts

@@ -0,0 +1,112 @@
+import { expect, test } from "vite-plus/test";
+import { chmod, chown, mkdir, readFile, rm, symlink, writeFile } from "node:fs/promises";
+import process from "node:process";
+
+import { isNotFound } from "./errors.ts";
+import {
+  agentCommand,
+  isRunnableProfileProcess,
+  killProfileProcesses,
+  readProfileFile,
+} from "./isolation.ts";
+import type { RuntimeProfile } from "./runtime.ts";
+import { currentUid, IS_ROOT, IS_WINDOWS, makeTempDir } from "#testing";
+
+const profile = (uid: number, home: string): RuntimeProfile => ({
+  index: uid - 20_000,
+  type: "claude",
+  model: "test",
+  uid,
+  gid: uid,
+  home,
+  tokenFile: null,
+});
+
+test("zombie process entries are already quiescent", () => {
+  const status = "State:\tZ (zombie)\nUid:\t20010\t20010\t20010\t20010\n";
+  expect(isRunnableProfileProcess(status, 20_010)).toBe(false);
+});
+
+test.skipIf(IS_WINDOWS)("refuses to read a profile result symlink as root", async () => {
+  const root = await makeTempDir();
+  try {
+    const secret = `${root}/reviewer-token`;
+    const result = `${root}/result.md`;
+    await writeFile(secret, "reviewer-secret", { mode: 0o600 });
+    await symlink(secret, result);
+
+    await expect(() => readProfileFile(profile(currentUid(), root), result)).rejects.toThrow(
+      "regular private file",
+    );
+  } finally {
+    await rm(root, { recursive: true });
+  }
+});
+
+test.skipIf(!IS_ROOT)("a profile process can read only its own private files", async () => {
+  const root = await makeTempDir();
+  await chmod(root, 0o711);
+  try {
+    const homeA = `${root}/a`;
+    const homeB = `${root}/b`;
+    await mkdir(homeA, { mode: 0o700 });
+    await mkdir(homeB, { mode: 0o700 });
+    await chown(homeA, 20_000, 20_000);
+    await chown(homeB, 20_001, 20_001);
+    await writeFile(`${homeA}/token`, "own", { mode: 0o600 });
+    await chown(`${homeA}/token`, 20_000, 20_000);
+    await writeFile(`${homeB}/token`, "sibling", { mode: 0o600 });
+    await chown(`${homeB}/token`, 20_001, 20_001);
+    await writeFile(`${root}/reviewer`, "root", { mode: 0o600 });
+
+    const selected = profile(20_000, homeA);
+    const own = await agentCommand(selected, "/bin/cat", [`${homeA}/token`], {
+      cwd: "/",
+    }).output();
+    const sibling = await agentCommand(selected, "/bin/cat", [`${homeB}/token`], {
+      cwd: "/",
+    }).output();
+    const reviewer = await agentCommand(selected, "/bin/cat", [`${root}/reviewer`], {
+      cwd: "/",
+    }).output();
+
+    expect(new TextDecoder().decode(own.stdout)).toBe("own");
+    expect(own.success).toBe(true);
+    expect(sibling.success).toBe(false);
+    expect(reviewer.success).toBe(false);
+  } finally {
+    await rm(root, { recursive: true });
+  }
+});
+
+test.skipIf(!IS_ROOT)("cleanup leaves no runnable daemonized process", async () => {
+  const selected = profile(20_010, "/tmp");
+  const launched = await agentCommand(
+    selected,
+    "/bin/sh",
+    ["-c", "sleep 60 >/dev/null 2>&1 & echo $!"],
+    { cwd: "/" },
+  ).output();
+  const pid = Number(new TextDecoder().decode(launched.stdout).trim());
+  expect(Number.isInteger(pid)).toBe(true);
+
+  await killProfileProcesses(selected.uid);
+
+  const status = await readFile(`/proc/${pid}/status`, "utf8").catch((error: unknown) => {
+    if (isNotFound(error)) return null;
+    throw error;
+  });
+  expect(status === null || !isRunnableProfileProcess(status, selected.uid)).toBe(true);
+});
+
+test.skipIf(!IS_ROOT)("the agent process cannot read its coordinator environment", async () => {
+  const selected = profile(20_020, "/tmp");
+  const result = await agentCommand(selected, "/usr/bin/cat", [`/proc/${process.pid}/environ`], {
+    cwd: "/",
+    env: { PARENT_SECRET: "must-not-cross-boundary" },
+    clearEnv: true,
+    stderr: "piped",
+  }).output();
+
+  expect(result.success).toBe(false);
+});

src/isolation.ts

@@ -1,68 +1,81 @@
+import { lstat, readdir, readFile } from "node:fs/promises";
+import process from "node:process";
+import { setTimeout as sleep } from "node:timers/promises";
+
+import { output, spawn } from "./command.ts";
+import type { CommandChild, CommandOptions, CommandOutput } from "./command.ts";
+import { isNotFound } from "./errors.ts";
 import type { RuntimeProfile } from "./runtime.ts";
 
+export type AgentCommandOptions = Omit<CommandOptions, "args" | "uid" | "gid">;
+
+export interface AgentCommand {
+  output(): Promise<CommandOutput>;
+  spawn(): CommandChild;
+}
+
 export function agentCommand(
   profile: RuntimeProfile,
   command: string,
   args: string[],
-  options: Omit<Deno.CommandOptions, "args" | "uid" | "gid"> = {},
-): Deno.Command {
-  return new Deno.Command(command, {
-    ...options,
-    args,
-    uid: profile.uid,
-    gid: profile.gid,
-  });
+  options: AgentCommandOptions = {},
+): AgentCommand {
+  const full: CommandOptions = { ...options, args, uid: profile.uid, gid: profile.gid };
+  return {
+    output: () => output(command, full),
+    spawn: () => spawn(command, full),
+  };
 }
 
-export function isRunnableProfileProcess(
-  status: string,
-  uid: number,
-): boolean {
-  const owner = status.match(/^Uid:\s+(\d+)/m)?.[1];
-  const state = status.match(/^State:\s+(\w)/m)?.[1];
+export function isRunnableProfileProcess(status: string, uid: number): boolean {
+  const owner = /^Uid:\s+(\d+)/mu.exec(status)?.[1];
+  const state = /^State:\s+(\w)/mu.exec(status)?.[1];
   return owner !== undefined && Number(owner) === uid && state !== "Z";
 }
 
 async function profileProcessIds(uid: number): Promise<number[]> {
-  const ids: number[] = [];
-  for await (const entry of Deno.readDir("/proc")) {
-    if (!entry.isDirectory || !/^\d+$/.test(entry.name)) continue;
-    const status = await Deno.readTextFile(`/proc/${entry.name}/status`).catch(
-      () => null,
-    );
-    if (status !== null && isRunnableProfileProcess(status, uid)) {
-      ids.push(Number(entry.name));
-    }
-  }
-  return ids;
+  const entries = await readdir("/proc", { withFileTypes: true });
+  const pids = entries
+    .filter((entry) => entry.isDirectory() && /^\d+$/u.test(entry.name))
+    .map((entry) => entry.name);
+  const statuses = await Promise.all(
+    pids.map((pid) => readFile(`/proc/${pid}/status`, "utf8").catch(() => null)),
+  );
+  return pids
+    .filter((_pid, index) => {
+      const status = statuses[index];
+      return status !== null && status !== undefined && isRunnableProfileProcess(status, uid);
+    })
+    .map(Number);
 }
 
-export async function killProfileProcesses(uid: number): Promise<void> {
-  for (let attempt = 0; attempt < 100; attempt++) {
-    const ids = await profileProcessIds(uid);
-    if (ids.length === 0) return;
-    for (const pid of ids) {
-      try {
-        Deno.kill(pid, "SIGKILL");
-      } catch (error) {
-        if (!(error instanceof Deno.errors.NotFound)) throw error;
-      }
-    }
-    await new Promise((resolve) => setTimeout(resolve, 10));
+// Kills the UID's processes every 10 ms until none is left, for up to 100 rounds.
+export async function killProfileProcesses(uid: number, attempt = 0): Promise<void> {
+  if (attempt === 100) {
+    throw new Error(`profile UID ${uid} still owns processes after cleanup`);
   }
-  throw new Error(`profile UID ${uid} still owns processes after cleanup`);
+  const ids = await profileProcessIds(uid);
+  if (ids.length === 0) return;
+  for (const pid of ids) {
+    try {
+      process.kill(pid, "SIGKILL");
+    } catch (error) {
+      if (!isNotFound(error)) throw error;
+    }
+  }
+  await sleep(10);
+  await killProfileProcesses(uid, attempt + 1);
 }
 
-export async function readProfileFile(
-  profile: RuntimeProfile,
-  path: string,
-): Promise<string> {
-  const stat = await Deno.lstat(path);
+export async function readProfileFile(profile: RuntimeProfile, path: string): Promise<string> {
+  const stat = await lstat(path);
   if (
-    !stat.isFile || stat.isSymlink || stat.uid !== profile.uid ||
-    (stat.mode! & 0o077) !== 0
+    !stat.isFile() ||
+    stat.isSymbolicLink() ||
+    stat.uid !== profile.uid ||
+    (stat.mode & 0o077) !== 0
   ) {
     throw new Error(`${path}: expected a profile-owned regular private file`);
   }
-  return await Deno.readTextFile(path);
+  return readFile(path, "utf8");
 }

src/isolation_test.ts

@@ -1,134 +0,0 @@
-import { assertEquals, assertRejects } from "jsr:@std/assert@1";
-import {
-  agentCommand,
-  isRunnableProfileProcess,
-  killProfileProcesses,
-  readProfileFile,
-} from "./isolation.ts";
-import type { RuntimeProfile } from "./runtime.ts";
-
-const profile = (uid: number, home: string): RuntimeProfile => ({
-  index: uid - 20_000,
-  type: "claude",
-  model: "test",
-  uid,
-  gid: uid,
-  home,
-  tokenFile: null,
-});
-
-Deno.test("zombie process entries are already quiescent", () => {
-  const status = "State:\tZ (zombie)\nUid:\t20010\t20010\t20010\t20010\n";
-  assertEquals(isRunnableProfileProcess(status, 20_010), false);
-});
-
-Deno.test({
-  name: "refuses to read a profile result symlink as root",
-  permissions: { read: true, write: true, sys: ["uid"] },
-  async fn() {
-    if (Deno.build.os === "windows") return;
-    const root = await Deno.makeTempDir();
-    try {
-      const secret = `${root}/reviewer-token`;
-      const result = `${root}/result.md`;
-      await Deno.writeTextFile(secret, "reviewer-secret", { mode: 0o600 });
-      await Deno.symlink(secret, result);
-
-      await assertRejects(
-        () => readProfileFile(profile(Deno.uid()!, root), result),
-        Error,
-        "regular private file",
-      );
-    } finally {
-      await Deno.remove(root, { recursive: true });
-    }
-  },
-});
-
-Deno.test({
-  name: "a profile process can read only its own private files",
-  permissions: { read: true, write: true, run: true, sys: ["uid"] },
-  async fn() {
-    if (Deno.uid() !== 0) return;
-    const root = await Deno.makeTempDir();
-    await Deno.chmod(root, 0o711);
-    try {
-      const homeA = `${root}/a`;
-      const homeB = `${root}/b`;
-      await Deno.mkdir(homeA, { mode: 0o700 });
-      await Deno.mkdir(homeB, { mode: 0o700 });
-      await Deno.chown(homeA, 20_000, 20_000);
-      await Deno.chown(homeB, 20_001, 20_001);
-      await Deno.writeTextFile(`${homeA}/token`, "own", { mode: 0o600 });
-      await Deno.chown(`${homeA}/token`, 20_000, 20_000);
-      await Deno.writeTextFile(`${homeB}/token`, "sibling", { mode: 0o600 });
-      await Deno.chown(`${homeB}/token`, 20_001, 20_001);
-      await Deno.writeTextFile(`${root}/reviewer`, "root", { mode: 0o600 });
-
-      const selected = profile(20_000, homeA);
-      const own = await agentCommand(selected, "/bin/cat", [`${homeA}/token`], {
-        cwd: "/",
-      }).output();
-      const sibling = await agentCommand(selected, "/bin/cat", [
-        `${homeB}/token`,
-      ], { cwd: "/" }).output();
-      const reviewer = await agentCommand(selected, "/bin/cat", [
-        `${root}/reviewer`,
-      ], { cwd: "/" }).output();
-
-      assertEquals(new TextDecoder().decode(own.stdout), "own");
-      assertEquals(own.success, true);
-      assertEquals(sibling.success, false);
-      assertEquals(reviewer.success, false);
-    } finally {
-      await Deno.remove(root, { recursive: true });
-    }
-  },
-});
-
-Deno.test({
-  name: "cleanup leaves no runnable daemonized process",
-  permissions: "inherit",
-  async fn() {
-    if (Deno.uid() !== 0) return;
-    const selected = profile(20_010, "/tmp");
-    const launched = await agentCommand(selected, "/bin/sh", [
-      "-c",
-      "sleep 60 >/dev/null 2>&1 & echo $!",
-    ], { cwd: "/" }).output();
-    const pid = Number(new TextDecoder().decode(launched.stdout).trim());
-    assertEquals(Number.isInteger(pid), true);
-
-    await killProfileProcesses(selected.uid);
-
-    const status = await Deno.readTextFile(`/proc/${pid}/status`).catch(
-      (error) => {
-        if (error instanceof Deno.errors.NotFound) return null;
-        throw error;
-      },
-    );
-    assertEquals(
-      status === null || !isRunnableProfileProcess(status, selected.uid),
-      true,
-    );
-  },
-});
-
-Deno.test({
-  name: "the agent process cannot read its coordinator environment",
-  permissions: { run: true, sys: ["uid"] },
-  async fn() {
-    if (Deno.uid() !== 0) return;
-    const selected = profile(20_020, "/tmp");
-    const result = await agentCommand(selected, "/usr/bin/cat", [
-      `/proc/${Deno.pid}/environ`,
-    ], {
-      cwd: "/",
-      env: { PARENT_SECRET: "must-not-cross-boundary" },
-      clearEnv: true,
-      stderr: "piped",
-    }).output();
-
-    assertEquals(result.success, false);
-  },
-});

src/json.ts

@@ -0,0 +1,12 @@
+// Type guards for values read from JSON, which arrive as `unknown`.
+export type JsonObject = Record<string, unknown>;
+
+// Any non-null object, arrays included: reading a missing key yields undefined.
+export function isObject(value: unknown): value is JsonObject {
+  return typeof value === "object" && value !== null;
+}
+
+// A plain mapping, which an array is not.
+export function isMapping(value: unknown): value is JsonObject {
+  return isObject(value) && !Array.isArray(value);
+}

src/opencode.test.ts

@@ -0,0 +1,103 @@
+import { assert, expect, test } from "vite-plus/test";
+import {
+  collectOpenCodeOutput,
+  openCodeArgs,
+  openCodeError,
+  parseOpenCodeEvents,
+} from "./opencode.ts";
+import { AgentAuthError } from "./profiles.ts";
+
+test("builds a non-interactive auto-approved OpenCode command", () => {
+  expect(openCodeArgs("openrouter/qwen/qwen3.8-27b", "Review this")).toStrictEqual([
+    "run",
+    "--format",
+    "json",
+    "--auto",
+    "--model",
+    "openrouter/qwen/qwen3.8-27b",
+    "Review this",
+  ]);
+});
+
+test("returns the final visible OpenCode text event", () => {
+  expect(
+    parseOpenCodeEvents(
+      [
+        JSON.stringify({ type: "step_start", part: { type: "step-start" } }),
+        JSON.stringify({ type: "text", part: { type: "text", text: "draft" } }),
+        JSON.stringify({ type: "text", part: { type: "text", text: "done" } }),
+        JSON.stringify({ type: "step_finish", part: { type: "step-finish" } }),
+      ].join("\n"),
+    ),
+  ).toBe("done");
+});
+
+test("rejects a successful OpenCode run without visible text", async () => {
+  await expect(async () => {
+    parseOpenCodeEvents('{"type":"step_start"}');
+    await Promise.resolve();
+  }).rejects.toThrow("no text output");
+});
+
+const encode = (value: string): Uint8Array => new TextEncoder().encode(value);
+
+test("streams OpenCode output while collecting it", async () => {
+  const stdout = new ReadableStream<Uint8Array>({
+    start(controller) {
+      controller.enqueue(encode("first\n"));
+      controller.enqueue(encode("second\n"));
+      controller.close();
+    },
+  });
+  const stderr = new ReadableStream<Uint8Array>({
+    start(controller) {
+      controller.enqueue(encode("warning\n"));
+      controller.close();
+    },
+  });
+  const shown: string[] = [];
+
+  const result = await collectOpenCodeOutput(
+    stdout,
+    stderr,
+    (chunk: Uint8Array) => {
+      shown.push(`out:${new TextDecoder().decode(chunk)}`);
+    },
+    (chunk: Uint8Array) => {
+      shown.push(`err:${new TextDecoder().decode(chunk)}`);
+    },
+  );
+
+  expect(result).toStrictEqual({ stdout: "first\nsecond\n", stderr: "warning\n" });
+  expect(shown).toStrictEqual(["out:first\n", "err:warning\n", "out:second\n"]);
+});
+
+const openRouterError = (statusCode: number, message: string): string =>
+  JSON.stringify({
+    type: "error",
+    sessionID: "ses_test",
+    error: {
+      name: "APIError",
+      data: {
+        message,
+        statusCode,
+        isRetryable: false,
+        responseBody: JSON.stringify({ error: { message, code: statusCode } }),
+      },
+    },
+  });
+
+test("reports a rejected OpenRouter key as a sign-in failure", () => {
+  const error = openCodeError(openRouterError(401, "User not found."));
+  assert.instanceOf(error, AgentAuthError);
+  expect(error.message).toBe("opencode sign-in failed");
+  assert.instanceOf(error.cause, Error);
+  expect(error.cause.message).toBe("opencode APIError (API error 401): User not found.");
+});
+
+test("surfaces an OpenCode error event instead of empty output", () => {
+  expect(() => parseOpenCodeEvents(openRouterError(429, "Rate limit exceeded"))).toThrow(
+    "API error 429",
+  );
+  expect(openCodeError('{"type":"text","part":{"text":"ok"}}')).toBe(undefined);
+});

src/opencode.ts

@@ -0,0 +1,86 @@
+import { isObject } from "./json.ts";
+import { AgentAuthError } from "./profiles.ts";
+
+export function openCodeArgs(model: string, prompt: string): string[] {
+  return ["run", "--format", "json", "--auto", "--model", model, prompt];
+}
+
+type ChunkWriter = (chunk: Uint8Array) => void | Promise<void>;
+
+export async function collectOpenCodeOutput(
+  stdout: AsyncIterable<Uint8Array>,
+  stderr: AsyncIterable<Uint8Array>,
+  writeStdout: ChunkWriter,
+  writeStderr: ChunkWriter,
+): Promise<{ stdout: string; stderr: string }> {
+  const collect = async (stream: AsyncIterable<Uint8Array>, write: ChunkWriter) => {
+    const chunks: Uint8Array[] = [];
+    for await (const chunk of stream) {
+      chunks.push(chunk);
+      await write(chunk);
+    }
+    const length = chunks.reduce((total, chunk) => total + chunk.length, 0);
+    const joined = new Uint8Array(length);
+    let offset = 0;
+    for (const chunk of chunks) {
+      joined.set(chunk, offset);
+      offset += chunk.length;
+    }
+    return new TextDecoder().decode(joined);
+  };
+  const [output, error] = await Promise.all([
+    collect(stdout, writeStdout),
+    collect(stderr, writeStderr),
+  ]);
+  return { stdout: output, stderr: error };
+}
+
+// OpenCode reports provider failures, including a rejected OpenRouter key
+// (401 "User not found."), as a JSON error event on stdout and exits 1 with an
+// empty stderr.
+export function openCodeError(output: string): Error | undefined {
+  let failure: Error | undefined;
+  for (const line of output.split("\n")) {
+    if (line.trim() === "") continue;
+    let event: unknown;
+    try {
+      event = JSON.parse(line);
+    } catch {
+      continue;
+    }
+    if (!isObject(event)) continue;
+    const { type, error } = event;
+    if (type !== "error" || !isObject(error)) {
+      continue;
+    }
+    const { name, data } = error;
+    const { message, statusCode } = isObject(data) ? data : {};
+    const detail = `opencode ${typeof name === "string" ? name : "error"}${
+      typeof statusCode === "number" ? ` (API error ${statusCode})` : ""
+    }: ${typeof message === "string" ? message : "unknown error"}`;
+    failure =
+      statusCode === 401 || statusCode === 403
+        ? new AgentAuthError("opencode sign-in failed", {
+            cause: new Error(detail),
+          })
+        : new Error(detail);
+  }
+  return failure;
+}
+
+export function parseOpenCodeEvents(output: string): string {
+  let result: string | undefined;
+  for (const line of output.split("\n")) {
+    if (line.trim() === "") continue;
+    const event: unknown = JSON.parse(line);
+    if (!isObject(event)) continue;
+    const { type, part } = event;
+    if (type !== "text" || !isObject(part)) continue;
+    const { text } = part;
+    if (typeof text === "string" && text.trim() !== "") result = text;
+  }
+  if (result === undefined) {
+    throw openCodeError(output) ?? new Error("OpenCode produced no text output");
+  }
+  return result;
+}

src/post.test.ts

@@ -0,0 +1,296 @@
+import { chmod, mkdir, rm, stat, symlink, writeFile } from "node:fs/promises";
+
+import { assert, expect, test } from "vite-plus/test";
+
+import { isNotFound } from "./errors.ts";
+import { postRuntime } from "./post.ts";
+import type { PostContext } from "./post.ts";
+import type { RuntimeManifest, RuntimeOutcome } from "./runtime.ts";
+import { currentGid, currentUid, IS_WINDOWS, makeTempDir } from "#testing";
+
+const context: PostContext = {
+  apiUrl: "https://gitea.example/api/v1",
+  repository: "owner/repo",
+  issueIndex: "7",
+  eventName: "issue_comment",
+};
+
+interface Fixture {
+  manifestPath: string;
+  runtimeDir: string;
+  reviewerFile: string;
+  reviewPath: string;
+  outcomeFile: string;
+}
+
+type FixtureSource = Extract<RuntimeOutcome, { ok: false }> | { ok: true; body: string };
+
+async function writePrivate(path: string, text: string): Promise<void> {
+  await writeFile(path, text, { mode: 0o600 });
+  await chmod(path, 0o600);
+}
+
+async function writeArtifacts(
+  outcome: RuntimeOutcome,
+  review: string | undefined,
+  anchors: unknown,
+): Promise<void> {
+  if (!outcome.ok) return;
+  if (review !== undefined) await writePrivate(outcome.reviewPath, review);
+  if (anchors !== undefined) await writePrivate(outcome.anchorsPath, JSON.stringify(anchors));
+}
+
+function manifestFor(runtimeDir: string, profileHome: string): RuntimeManifest {
+  return {
+    runtimeDir,
+    manifestPath: `${runtimeDir}/manifest.json`,
+    reviewerFile: `${runtimeDir}/reviewer-token`,
+    outcomeFile: `${runtimeDir}/outcome.json`,
+    profiles: [
+      {
+        index: 0,
+        type: "claude",
+        model: "test",
+        uid: currentUid(),
+        gid: currentGid(),
+        home: profileHome,
+        tokenFile: null,
+      },
+    ],
+  };
+}
+
+async function fixture(
+  source: FixtureSource,
+  review?: string,
+  anchors?: unknown,
+): Promise<Fixture> {
+  const runtimeDir = await makeTempDir();
+  const profileHome = `${runtimeDir}/profile-0`;
+  const manifest = manifestFor(runtimeDir, profileHome);
+  await mkdir(profileHome);
+  await writeFile(manifest.reviewerFile, "reviewer-secret");
+  const outcome: RuntimeOutcome = source.ok
+    ? {
+        ...source,
+        profile: { type: "codex", model: "gpt-test" },
+        reviewPath: `${profileHome}/review.md`,
+        anchorsPath: `${profileHome}/anchors.json`,
+      }
+    : source;
+  await writeFile(manifest.outcomeFile, JSON.stringify(outcome));
+  await writeArtifacts(outcome, review, anchors);
+  await writeFile(manifest.manifestPath, JSON.stringify(manifest));
+  const { manifestPath, reviewerFile, outcomeFile } = manifest;
+  return {
+    manifestPath,
+    runtimeDir,
+    reviewerFile,
+    reviewPath: `${profileHome}/review.md`,
+    outcomeFile,
+  };
+}
+
+const missing = async (path: string): Promise<boolean> => {
+  try {
+    await stat(path);
+    return false;
+  } catch (error) {
+    if (isNotFound(error)) return true;
+    throw error;
+  }
+};
+
+// The JSON body of one request the fake Gitea received.
+function requestBody(init?: RequestInit): unknown {
+  return typeof init?.body === "string" ? JSON.parse(init.body) : undefined;
+}
+
+// A fake Gitea that records each request body and answers with `status`.
+function recordingFetch(bodies: unknown[], status = 201): typeof fetch {
+  return (_url, init) => {
+    bodies.push(requestBody(init));
+    return Promise.resolve(new Response(null, { status }));
+  };
+}
+
+test("posts a successful issue result and removes runtime credentials", async () => {
+  const result = await fixture({ ok: true, body: "done" });
+  const requests: { url: unknown; init: RequestInit | undefined }[] = [];
+
+  await postRuntime(result.manifestPath, context, (url, init) => {
+    requests.push({ url, init });
+    return Promise.resolve(new Response(null, { status: 201 }));
+  });
+
+  expect(requests.length).toBe(1);
+  const [request] = requests;
+  expect(request?.url).toStrictEqual(`${context.apiUrl}/repos/owner/repo/issues/7/comments`);
+  expect(requestBody(request?.init)).toStrictEqual({
+    body: "done\n\n> Profile: `codex` · `gpt-test`",
+  });
+  expect(request?.init?.headers).toStrictEqual({
+    Authorization: "token reviewer-secret",
+    "Content-Type": "application/json",
+  });
+  assert(await missing(result.runtimeDir));
+});
+
+test("retries a rejected inline review without anchors", async () => {
+  const result = await fixture({ ok: true, body: "ignored final response" }, "Approved\nReady", [
+    { path: "run.ts", line: 1, side: "new", body: "Finding" },
+  ]);
+  const bodies: unknown[] = [];
+
+  await postRuntime(
+    result.manifestPath,
+    {
+      ...context,
+      eventName: "pull_request",
+    },
+    (_url, init) => {
+      bodies.push(requestBody(init));
+      return Promise.resolve(new Response(null, { status: bodies.length === 1 ? 422 : 200 }));
+    },
+  );
+
+  expect(bodies[0]).toMatchObject({
+    comments: [{ body: "Finding\n\n> Profile: `codex` · `gpt-test`" }],
+  });
+  expect(bodies[1]).toMatchObject({
+    comments: [],
+    body: "✅ Approved\nReady\n\n> Profile: `codex` · `gpt-test`",
+  });
+  assert(await missing(result.runtimeDir));
+});
+
+test("reports each tried profile and keeps the action failed", async () => {
+  const result = await fixture({
+    ok: false,
+    failures: [
+      { type: "codex", model: "gpt-test", reason: "sign-in failed" },
+      { type: "claude", model: "claude-test", reason: "usage exhausted" },
+      { type: "opencode", model: "openrouter/test", reason: "failed" },
+    ],
+  });
+  const bodies: unknown[] = [];
+
+  await expect(() =>
+    postRuntime(result.manifestPath, context, recordingFetch(bodies)),
+  ).rejects.toThrow("agent phase failed");
+
+  expect(bodies).toStrictEqual([
+    {
+      body:
+        "AI bot failed.\n\n> Tried: `codex` · `gpt-test` (sign-in failed), " +
+        "`claude` · `claude-test` (usage exhausted), " +
+        "`opencode` · `openrouter/test` (failed)",
+    },
+  ]);
+  assert(!JSON.stringify(bodies).includes("reviewer-secret"));
+  assert(await missing(result.runtimeDir));
+});
+
+test("drops failure entries that are not known labels", async () => {
+  const result = await fixture({ ok: false, failures: [] });
+  await writeFile(
+    result.outcomeFile,
+    JSON.stringify({
+      ok: false,
+      failures: [
+        { type: "codex", model: "gpt-test", reason: "token sk-secret leaked" },
+        { type: "shell", model: "x", reason: "failed" },
+        { type: "claude", model: "claude-test", reason: "sign-in failed" },
+      ],
+    }),
+  );
+  const bodies: unknown[] = [];
+
+  await expect(() =>
+    postRuntime(result.manifestPath, context, recordingFetch(bodies)),
+  ).rejects.toThrow("agent phase failed");
+
+  expect(bodies).toStrictEqual([
+    {
+      body: "AI bot failed.\n\n> Tried: `claude` · `claude-test` (sign-in failed)",
+    },
+  ]);
+});
+
+test("reports a generic failure when the runner wrote no outcome", async () => {
+  const result = await fixture({ ok: false, failures: [] });
+  await rm(result.outcomeFile);
+  const bodies: unknown[] = [];
+
+  await expect(() =>
+    postRuntime(result.manifestPath, context, recordingFetch(bodies)),
+  ).rejects.toThrow("agent phase failed");
+
+  expect(bodies).toStrictEqual([{ body: "AI bot failed.\n\n> Profile: none" }]);
+  assert(await missing(result.runtimeDir));
+});
+
+test("removes runtime credentials when posting fails", async () => {
+  const result = await fixture({ ok: true, body: "done" });
+
+  await expect(() =>
+    postRuntime(result.manifestPath, context, () =>
+      Promise.resolve(new Response("failed", { status: 500 })),
+    ),
+  ).rejects.toThrow("500");
+  assert(await missing(result.runtimeDir));
+});
+
+test("preserves a Gitea transport failure without retrying a comment", async () => {
+  const result = await fixture({ ok: true, body: "done" });
+  let requests = 0;
+
+  await expect(() =>
+    postRuntime(result.manifestPath, context, () => {
+      requests += 1;
+      return Promise.reject(new Error(`network failure ${requests}`));
+    }),
+  ).rejects.toThrow("network failure 1");
+
+  expect(requests).toBe(1);
+  assert(await missing(result.runtimeDir));
+});
+
+test.skipIf(IS_WINDOWS)("refuses to follow an agent artifact symlink", async () => {
+  const result = await fixture({ ok: true, body: "done" });
+  await symlink(result.reviewerFile, result.reviewPath);
+  let requests = 0;
+
+  await expect(() =>
+    postRuntime(result.manifestPath, context, () => {
+      requests += 1;
+      return Promise.resolve(new Response(null, { status: 200 }));
+    }),
+  ).rejects.toThrow("regular private file");
+
+  expect(requests).toBe(1);
+  assert(await missing(result.runtimeDir));
+});
+
+test("reports an attributed failure when a pull request review is missing", async () => {
+  const result = await fixture({ ok: true, body: "done" });
+  const bodies: unknown[] = [];
+
+  await expect(() =>
+    postRuntime(
+      result.manifestPath,
+      {
+        ...context,
+        eventName: "pull_request",
+      },
+      recordingFetch(bodies),
+    ),
+  ).rejects.toThrow("did not write");
+
+  expect(bodies).toStrictEqual([
+    {
+      body: "AI bot failed.\n\n> Tried: `codex` · `gpt-test` (failed)",
+    },
+  ]);
+  assert(await missing(result.runtimeDir));
+});

src/post.ts

@@ -1,75 +1,110 @@
-import { join } from "jsr:@std/path@1";
-import {
-  readRuntimeManifest,
-  type RuntimeManifest,
-  type RuntimeOutcome,
-} from "./runtime.ts";
+import type { Stats } from "node:fs";
+import { lstat, readFile, rm } from "node:fs/promises";
+import { join } from "node:path";
+import process from "node:process";
 
-export type PostContext = {
+import { isNotFound } from "./errors.ts";
+import { isObject } from "./json.ts";
+import { failureFooter, withProfile } from "./profiles.ts";
+import type { FailureReason, ProfileFailure } from "./profiles.ts";
+import { readRuntimeManifest } from "./runtime.ts";
+import type { RuntimeManifest, RuntimeOutcome } from "./runtime.ts";
+
+export interface PostContext {
   apiUrl: string;
   repository: string;
   issueIndex: string;
   eventName: string;
-};
+}
 
-type Anchor = {
+interface Anchor {
   path: string;
   line: number;
   side: "new" | "old";
   body: string;
-};
+}
 
-const ANSI = new RegExp(`${String.fromCharCode(27)}\\[[0-9;]*[A-Za-z]`, "g");
+const ANSI = new RegExp(`${String.fromCodePoint(27)}\\[[0-9;]*[A-Za-z]`, "gu");
 const stripAnsi = (text: string): string => text.replace(ANSI, "");
 const VERDICTS: Record<string, [event: string, mark: string]> = {
   Approved: ["APPROVED", "✅"],
   "Changes requested": ["REQUEST_CHANGES", "🛑"],
 };
+const PROFILE_TYPES: Set<unknown> = new Set(["claude", "codex", "opencode"]);
+const FAILURE_REASONS: Set<unknown> = new Set(["sign-in failed", "usage exhausted", "failed"]);
+const isProfileType = (value: unknown): value is ProfileFailure["type"] => PROFILE_TYPES.has(value);
+const isFailureReason = (value: unknown): value is FailureReason => FAILURE_REASONS.has(value);
+const failureComment = (failures: ProfileFailure[]): string =>
+  `AI bot failed.\n\n${failureFooter(failures)}`;
+
+class GiteaRequestError extends Error {}
 
 function parseAnchors(text: string, sourcePath: string): Anchor[] {
   const entries: unknown = JSON.parse(text);
-  if (!Array.isArray(entries)) throw new Error(`${sourcePath}: not an array`);
+  if (!Array.isArray(entries)) throw new TypeError(`${sourcePath}: not an array`);
   return entries.map((entry: unknown, index) => {
     const at = `${sourcePath}[${index}]`;
-    if (typeof entry !== "object" || entry === null) {
-      throw new Error(`${at}: not an object`);
+    if (!isObject(entry)) {
+      throw new TypeError(`${at}: not an object`);
     }
-    const { path, line, side = "new", body } = entry as Record<string, unknown>;
+    const { path, line, side = "new", body } = entry;
     if (typeof path !== "string" || path === "") {
-      throw new Error(`${at}.path: expected a repository path`);
+      throw new TypeError(`${at}.path: expected a repository path`);
     }
     if (typeof line !== "number" || !Number.isInteger(line) || line < 1) {
-      throw new Error(`${at}.line: expected a line number`);
+      throw new TypeError(`${at}.line: expected a line number`);
     }
     if (side !== "new" && side !== "old") {
-      throw new Error(`${at}.side: expected \"new\" or \"old\"`);
+      throw new Error(`${at}.side: expected "new" or "old"`);
     }
     if (typeof body !== "string" || body.trim() === "") {
-      throw new Error(`${at}.body: expected the finding`);
+      throw new TypeError(`${at}.body: expected the finding`);
     }
     return { path, line, side, body };
   });
 }
 
 async function readOutcome(path: string): Promise<RuntimeOutcome> {
-  const value: unknown = JSON.parse(await Deno.readTextFile(path));
-  if (typeof value !== "object" || value === null || !("ok" in value)) {
+  const value: unknown = JSON.parse(await readFile(path, "utf8"));
+  if (!isObject(value) || !("ok" in value)) {
     throw new Error("invalid agent outcome");
   }
-  const outcome = value as Record<string, unknown>;
-  if (outcome.ok === false) return { ok: false };
+  const outcome = value;
+  if (outcome["ok"] === false) {
+    // Only known labels reach the comment, never raw agent output.
+    const failures: unknown[] = Array.isArray(outcome["failures"]) ? outcome["failures"] : [];
+    return {
+      ok: false,
+      failures: failures.flatMap((entry: unknown) => {
+        const { type, model, reason } = isObject(entry) ? entry : {};
+        return isProfileType(type) && typeof model === "string" && isFailureReason(reason)
+          ? [{ type, model, reason }]
+          : [];
+      }),
+    };
+  }
   if (
-    outcome.ok !== true || typeof outcome.body !== "string" ||
-    typeof outcome.reviewPath !== "string" ||
-    typeof outcome.anchorsPath !== "string"
+    outcome["ok"] !== true ||
+    typeof outcome["body"] !== "string" ||
+    typeof outcome["reviewPath"] !== "string" ||
+    typeof outcome["anchorsPath"] !== "string" ||
+    !isObject(outcome["profile"])
   ) {
     throw new Error("invalid agent outcome");
   }
+  const profile = outcome["profile"];
+  if (!isProfileType(profile["type"]) || typeof profile["model"] !== "string") {
+    throw new Error("invalid agent outcome");
+  }
   return {
     ok: true,
-    body: outcome.body,
-    reviewPath: outcome.reviewPath,
-    anchorsPath: outcome.anchorsPath,
+    body: outcome["body"],
+    reviewPath: outcome["reviewPath"],
+    anchorsPath: outcome["anchorsPath"],
+    profile: {
+      type: profile["type"],
+      model: profile["model"],
+    },
   };
 }
 
@@ -78,24 +113,24 @@ async function readAgentArtifact(
   path: string,
   name: string,
 ): Promise<string | null> {
-  const profile = manifest.profiles.find((entry) =>
-    join(entry.home, name) === path
-  );
+  const profile = manifest.profiles.find((entry) => join(entry.home, name) === path);
   if (profile === undefined) throw new Error(`${name}: outside profile home`);
-  let stat: Deno.FileInfo;
+  let stat: Stats;
   try {
-    stat = await Deno.lstat(path);
+    stat = await lstat(path);
   } catch (error) {
-    if (error instanceof Deno.errors.NotFound) return null;
+    if (isNotFound(error)) return null;
     throw error;
   }
   if (
-    !stat.isFile || stat.isSymlink || stat.uid !== profile.uid ||
-    (stat.mode! & 0o077) !== 0
+    !stat.isFile() ||
+    stat.isSymbolicLink() ||
+    stat.uid !== profile.uid ||
+    (stat.mode & 0o077) !== 0
   ) {
     throw new Error(`${name}: expected a profile-owned regular private file`);
   }
-  const text = await Deno.readTextFile(path);
+  const text = await readFile(path, "utf8");
   return text === "" ? null : text;
 }
 
@@ -106,96 +141,96 @@ export async function postRuntime(
 ): Promise<void> {
   const manifest = await readRuntimeManifest(manifestPath);
   try {
-    const reviewerToken = (await Deno.readTextFile(manifest.reviewerFile))
-      .trim();
+    const reviewerToken = (await readFile(manifest.reviewerFile, "utf8")).trim();
     const request = async (path: string, body: unknown): Promise<void> => {
-      const response = await fetcher(`${context.apiUrl}/${path}`, {
-        method: "POST",
-        headers: {
-          Authorization: `token ${reviewerToken}`,
-          "Content-Type": "application/json",
-        },
-        body: JSON.stringify(body),
-      });
+      let response: Response;
+      try {
+        response = await fetcher(`${context.apiUrl}/${path}`, {
+          method: "POST",
+          headers: {
+            Authorization: `token ${reviewerToken}`,
+            "Content-Type": "application/json",
+          },
+          body: JSON.stringify(body),
+        });
+      } catch (error) {
+        const detail = error instanceof Error ? error.message : String(error);
+        throw new GiteaRequestError(`${path}: ${detail}`, { cause: error });
+      }
       if (!response.ok) {
-        throw new Error(`${path}: ${response.status} ${await response.text()}`);
+        throw new GiteaRequestError(`${path}: ${response.status} ${await response.text()}`);
       }
     };
-    const postComment = (body: string) =>
-      request(
-        `repos/${context.repository}/issues/${context.issueIndex}/comments`,
-        { body: stripAnsi(body) },
-      );
+    const postComment = (body: string): Promise<void> =>
+      request(`repos/${context.repository}/issues/${context.issueIndex}/comments`, {
+        body: stripAnsi(body),
+      });
 
     let outcome: RuntimeOutcome;
     try {
       outcome = await readOutcome(manifest.outcomeFile);
     } catch (error) {
-      await postComment("AI bot failed.");
+      await postComment(failureComment([]));
       throw new Error("agent phase failed", { cause: error });
     }
     if (!outcome.ok) {
-      await postComment("AI bot failed.");
+      await postComment(failureComment(outcome.failures));
       throw new Error("agent phase failed");
     }
 
-    const review = await readAgentArtifact(
-      manifest,
-      outcome.reviewPath,
-      "review.md",
-    );
-    if (review === null) {
-      if (context.eventName === "pull_request") {
-        throw new Error("agent did not write a pull request review");
+    try {
+      const review = await readAgentArtifact(manifest, outcome.reviewPath, "review.md");
+      if (review === null) {
+        if (context.eventName === "pull_request") {
+          throw new Error("agent did not write a pull request review");
+        }
+        await postComment(withProfile(outcome.body, outcome.profile));
+        return;
       }
-      await postComment(outcome.body);
-      return;
-    }
 
-    const [verdict, ...rest] = review.split("\n");
-    const [event, mark] = VERDICTS[verdict.trim()] ?? ["COMMENT", "💬"];
-    const anchorText = await readAgentArtifact(
-      manifest,
-      outcome.anchorsPath,
-      "anchors.json",
-    );
-    const anchors = anchorText === null
-      ? []
-      : parseAnchors(anchorText, outcome.anchorsPath);
-    const postReview = (entries: Anchor[]) =>
-      request(
-        `repos/${context.repository}/pulls/${context.issueIndex}/reviews`,
-        {
-          body: stripAnsi([`${mark} ${verdict.trim()}`, ...rest].join("\n")),
+      const [verdict = "", ...rest] = review.split("\n");
+      const [event, mark] = VERDICTS[verdict.trim()] ?? ["COMMENT", "💬"];
+      const anchorText = await readAgentArtifact(manifest, outcome.anchorsPath, "anchors.json");
+      const anchors = anchorText === null ? [] : parseAnchors(anchorText, outcome.anchorsPath);
+      const postReview = (entries: Anchor[]): Promise<void> =>
+        request(`repos/${context.repository}/pulls/${context.issueIndex}/reviews`, {
+          body: stripAnsi(
+            withProfile([`${mark} ${verdict.trim()}`, ...rest].join("\n"), outcome.profile),
+          ),
           event,
           comments: entries.map(({ path, line, side, body }) => ({
             path,
-            body: stripAnsi(body),
+            body: stripAnsi(withProfile(body, outcome.profile)),
             new_position: side === "new" ? line : 0,
             old_position: side === "old" ? line : 0,
           })),
-        },
-      );
-    await postReview(anchors).catch(async (error: Error) => {
-      if (anchors.length === 0) throw error;
-      console.error(`inline comments rejected: ${error.message}`);
-      await postReview([]);
-    });
+        });
+      await postReview(anchors).catch(async (error: unknown) => {
+        if (anchors.length === 0) throw error;
+        console.error(
+          `inline comments rejected: ${error instanceof Error ? error.message : String(error)}`,
+        );
+        await postReview([]);
+      });
+    } catch (error) {
+      if (error instanceof GiteaRequestError) throw error;
+      await postComment(failureComment([{ ...outcome.profile, reason: "failed" }]));
+      throw error;
+    }
   } finally {
-    await Deno.remove(manifest.runtimeDir, { recursive: true }).catch(
-      (error) => {
-        if (!(error instanceof Deno.errors.NotFound)) throw error;
-      },
-    );
+    await rm(manifest.runtimeDir, { recursive: true }).catch((error: unknown) => {
+      if (!isNotFound(error)) throw error;
+    });
   }
 }
 
+function required(name: string): string {
+  const value = process.env[name];
+  if (value === undefined || value === "") throw new Error(`${name} is not set`);
+  return value;
+}
+
 if (import.meta.main) {
-  const required = (name: string): string => {
-    const value = Deno.env.get(name);
-    if (!value) throw new Error(`${name} is not set`);
-    return value;
-  };
   await postRuntime(required("BOT_AGENTS_MANIFEST"), {
     apiUrl: required("GITEA_API_URL"),
     repository: required("GITEA_REPOSITORY"),

src/post_test.ts

@@ -1,202 +0,0 @@
-import { assert, assertEquals, assertRejects } from "jsr:@std/assert@1";
-import { type PostContext, postRuntime } from "./post.ts";
-import type { RuntimeManifest, RuntimeOutcome } from "./runtime.ts";
-
-const context: PostContext = {
-  apiUrl: "https://gitea.example/api/v1",
-  repository: "owner/repo",
-  issueIndex: "7",
-  eventName: "issue_comment",
-};
-
-async function fixture(
-  source: { ok: false } | { ok: true; body: string },
-  review?: string,
-  anchors?: unknown,
-): Promise<{
-  manifestPath: string;
-  runtimeDir: string;
-  reviewerFile: string;
-  reviewPath: string;
-  outcomeFile: string;
-}> {
-  const runtimeDir = await Deno.makeTempDir();
-  const reviewerFile = `${runtimeDir}/reviewer-token`;
-  const outcomeFile = `${runtimeDir}/outcome.json`;
-  const profileHome = `${runtimeDir}/profile-0`;
-  await Deno.mkdir(profileHome);
-  await Deno.writeTextFile(reviewerFile, "reviewer-secret");
-  const outcome: RuntimeOutcome = source.ok
-    ? {
-      ...source,
-      reviewPath: `${profileHome}/review.md`,
-      anchorsPath: `${profileHome}/anchors.json`,
-    }
-    : source;
-  await Deno.writeTextFile(outcomeFile, JSON.stringify(outcome));
-  if (outcome.ok) {
-    if (review !== undefined) {
-      await Deno.writeTextFile(outcome.reviewPath, review, { mode: 0o600 });
-      await Deno.chmod(outcome.reviewPath, 0o600);
-    }
-    if (anchors !== undefined) {
-      await Deno.writeTextFile(outcome.anchorsPath, JSON.stringify(anchors), {
-        mode: 0o600,
-      });
-      await Deno.chmod(outcome.anchorsPath, 0o600);
-    }
-  }
-  const manifestPath = `${runtimeDir}/manifest.json`;
-  const manifest: RuntimeManifest = {
-    runtimeDir,
-    manifestPath,
-    reviewerFile,
-    outcomeFile,
-    profiles: [{
-      index: 0,
-      type: "claude",
-      model: "test",
-      uid: Deno.uid()!,
-      gid: Deno.gid()!,
-      home: profileHome,
-      tokenFile: null,
-    }],
-  };
-  await Deno.writeTextFile(manifestPath, JSON.stringify(manifest));
-  return {
-    manifestPath,
-    runtimeDir,
-    reviewerFile,
-    reviewPath: `${profileHome}/review.md`,
-    outcomeFile,
-  };
-}
-
-const missing = async (path: string): Promise<boolean> => {
-  try {
-    await Deno.stat(path);
-    return false;
-  } catch (error) {
-    if (error instanceof Deno.errors.NotFound) return true;
-    throw error;
-  }
-};
-
-Deno.test("posts a successful issue result and removes runtime credentials", async () => {
-  const result = await fixture({ ok: true, body: "done" });
-  const requests: Array<{ url: string; init?: RequestInit }> = [];
-
-  await postRuntime(result.manifestPath, context, (url, init) => {
-    requests.push({ url: String(url), init });
-    return Promise.resolve(new Response(null, { status: 201 }));
-  });
-
-  assertEquals(requests.length, 1);
-  assertEquals(
-    requests[0].url,
-    `${context.apiUrl}/repos/owner/repo/issues/7/comments`,
-  );
-  assertEquals(JSON.parse(String(requests[0].init?.body)), { body: "done" });
-  assertEquals(requests[0].init?.headers, {
-    Authorization: "token reviewer-secret",
-    "Content-Type": "application/json",
-  });
-  assert(await missing(result.runtimeDir));
-});
-
-Deno.test("retries a rejected inline review without anchors", async () => {
-  const result = await fixture(
-    { ok: true, body: "ignored final response" },
-    "Approved\nReady",
-    [{ path: "run.ts", line: 1, side: "new", body: "Finding" }],
-  );
-  const bodies: unknown[] = [];
-
-  await postRuntime(result.manifestPath, {
-    ...context,
-    eventName: "pull_request",
-  }, (_url, init) => {
-    bodies.push(JSON.parse(String(init?.body)));
-    return Promise.resolve(
-      new Response(null, { status: bodies.length === 1 ? 422 : 200 }),
-    );
-  });
-
-  assertEquals((bodies[0] as { comments: unknown[] }).comments.length, 1);
-  assertEquals((bodies[1] as { comments: unknown[] }).comments, []);
-  assert(await missing(result.runtimeDir));
-});
-
-Deno.test("reports a generic agent failure and keeps the action failed", async () => {
-  const result = await fixture({ ok: false });
-  const bodies: unknown[] = [];
-
-  await assertRejects(
-    () =>
-      postRuntime(result.manifestPath, context, (_url, init) => {
-        bodies.push(JSON.parse(String(init?.body)));
-        return Promise.resolve(new Response(null, { status: 201 }));
-      }),
-    Error,
-    "agent phase failed",
-  );
-
-  assertEquals(bodies, [{ body: "AI bot failed." }]);
-  assert(!JSON.stringify(bodies).includes("reviewer-secret"));
-  assert(await missing(result.runtimeDir));
-});
-
-Deno.test("reports a generic failure when the runner wrote no outcome", async () => {
-  const result = await fixture({ ok: false });
-  await Deno.remove(result.outcomeFile);
-  const bodies: unknown[] = [];
-
-  await assertRejects(
-    () =>
-      postRuntime(result.manifestPath, context, (_url, init) => {
-        bodies.push(JSON.parse(String(init?.body)));
-        return Promise.resolve(new Response(null, { status: 201 }));
-      }),
-    Error,
-    "agent phase failed",
-  );
-
-  assertEquals(bodies, [{ body: "AI bot failed." }]);
-  assert(await missing(result.runtimeDir));
-});
-
-Deno.test("removes runtime credentials when posting fails", async () => {
-  const result = await fixture({ ok: true, body: "done" });
-
-  await assertRejects(
-    () =>
-      postRuntime(
-        result.manifestPath,
-        context,
-        () => Promise.resolve(new Response("failed", { status: 500 })),
-      ),
-    Error,
-    "500",
-  );
-  assert(await missing(result.runtimeDir));
-});
-
-Deno.test("refuses to follow an agent artifact symlink", async () => {
-  if (Deno.build.os === "windows") return;
-  const result = await fixture({ ok: true, body: "done" });
-  await Deno.symlink(result.reviewerFile, result.reviewPath);
-  let requests = 0;
-
-  await assertRejects(
-    () =>
-      postRuntime(result.manifestPath, context, () => {
-        requests++;
-        return Promise.resolve(new Response(null, { status: 200 }));
-      }),
-    Error,
-    "regular private file",
-  );
-
-  assertEquals(requests, 0);
-  assert(await missing(result.runtimeDir));
-});

src/prepare.ts

@@ -1,8 +1,11 @@
+import { appendFile, rm } from "node:fs/promises";
+import process from "node:process";
+
 import { prepareRuntime } from "./runtime.ts";
 
 const env = (name: string): string => {
-  const value = Deno.env.get(name);
-  if (!value) throw new Error(`${name} is not set`);
+  const value = process.env[name];
+  if (value === undefined || value === "") throw new Error(`${name} is not set`);
   return value;
 };
 
@@ -12,14 +15,8 @@ const manifest = await prepareRuntime(
   env("BOT_AGENTS_MASTER_KEY"),
 );
 try {
-  await Deno.writeTextFile(
-    env("GITHUB_OUTPUT"),
-    `manifest=${manifest.manifestPath}\n`,
-    { append: true },
-  );
+  await appendFile(env("GITHUB_OUTPUT"), `manifest=${manifest.manifestPath}\n`);
 } catch (error) {
-  await Deno.remove(manifest.runtimeDir, { recursive: true }).catch(() =>
-    undefined
-  );
+  await rm(manifest.runtimeDir, { recursive: true }).catch(() => {});
   throw error;
 }

src/profiles.test.ts

@@ -0,0 +1,228 @@
+import { expect, test } from "vite-plus/test";
+import {
+  AgentAuthError,
+  agentEnvironment,
+  failureFooter,
+  type ProfileFailure,
+  profileFooter,
+  runProfiles,
+  sanitizedEnvironment,
+} from "./profiles.ts";
+
+test("formats profile attribution as a Markdown quote", () => {
+  expect(profileFooter({ type: "opencode", model: "openrouter/qwen/qwen3.8-27b" })).toBe(
+    "> Profile: `opencode` · `openrouter/qwen/qwen3.8-27b`",
+  );
+});
+
+test("falls through only after usage exhaustion", async () => {
+  const visited: string[] = [];
+  const result = await runProfiles(
+    [
+      { type: "claude", model: "claude-sonnet-5", token: "first" },
+      { type: "codex", model: "gpt-5.6-terra" },
+    ],
+    (profile) => {
+      visited.push(profile.type);
+      if (profile.type === "claude") {
+        throw new Error("You've hit your usage limit");
+      }
+      return Promise.resolve("done");
+    },
+  );
+
+  expect(result).toBe("done");
+  expect(visited).toStrictEqual(["claude", "codex"]);
+});
+
+test("recognizes Claude's weekly limit message", async () => {
+  const result = await runProfiles(
+    [
+      { type: "claude", model: "claude-sonnet-5", token: "first" },
+      { type: "codex", model: "gpt-5.6-terra" },
+    ],
+    (profile) => {
+      if (profile.type === "claude") {
+        throw new Error("You've hit your weekly limit · resets 12am (UTC)");
+      }
+      return Promise.resolve("fallback");
+    },
+  );
+
+  expect(result).toBe("fallback");
+});
+
+test("recognizes provider API exhaustion status", async () => {
+  const results = await Promise.all(
+    ["API Error: 402 Insufficient funds", "HTTP error: 429"].map((message) =>
+      runProfiles(
+        [
+          { type: "claude", model: "claude-sonnet-5", token: "first" },
+          { type: "codex", model: "gpt-5.6-terra" },
+        ],
+        (profile) => {
+          if (profile.type === "claude") throw new Error(message);
+          return Promise.resolve("fallback");
+        },
+      ),
+    ),
+  );
+
+  expect(results).toStrictEqual(["fallback", "fallback"]);
+});
+
+test("falls through after a sign-in failure and records each try", async () => {
+  const failures: ProfileFailure[] = [];
+  const result = await runProfiles(
+    [
+      { type: "codex", model: "gpt-5.6-terra" },
+      { type: "claude", model: "claude-sonnet-5", token: "first" },
+      { type: "opencode", model: "openrouter/qwen/qwen3.8-27b" },
+    ],
+    (profile) => {
+      if (profile.type === "codex") {
+        throw new AgentAuthError("codex sign-in failed");
+      }
+      if (profile.type === "claude") throw new Error("API Error: 429");
+      return Promise.resolve("fallback");
+    },
+    failures,
+  );
+
+  expect(result).toBe("fallback");
+  expect(failures).toStrictEqual([
+    { type: "codex", model: "gpt-5.6-terra", reason: "sign-in failed" },
+    { type: "claude", model: "claude-sonnet-5", reason: "usage exhausted" },
+  ]);
+  expect(failureFooter(failures)).toStrictEqual(
+    "> Tried: `codex` · `gpt-5.6-terra` (sign-in failed), " +
+      "`claude` · `claude-sonnet-5` (usage exhausted)",
+  );
+});
+
+test("throws the last sign-in failure when every profile fails", async () => {
+  const failures: ProfileFailure[] = [];
+  await expect(() =>
+    runProfiles(
+      [
+        { type: "codex", model: "gpt-5.6-terra" },
+        { type: "claude", model: "claude-sonnet-5", token: "first" },
+      ],
+      (profile) => {
+        throw new AgentAuthError(`${profile.type} sign-in failed`);
+      },
+      failures,
+    ),
+  ).rejects.toThrow(
+    expect.toSatisfy(
+      (e: unknown) => e instanceof AgentAuthError && e.message.includes("claude sign-in failed"),
+    ),
+  );
+  expect(failures.map(({ reason }) => reason)).toStrictEqual(["sign-in failed", "sign-in failed"]);
+});
+
+test("preserves an ordinary agent failure", async () => {
+  const visited: string[] = [];
+  await expect(() =>
+    runProfiles(
+      [
+        { type: "claude", model: "claude-sonnet-5", token: "first" },
+        { type: "codex", model: "gpt-5.6-terra" },
+      ],
+      (profile) => {
+        visited.push(profile.type);
+        throw new Error("tests failed");
+      },
+    ),
+  ).rejects.toThrow("tests failed");
+  expect(visited).toStrictEqual(["claude"]);
+});
+
+test("does not mistake incidental quota text for exhaustion", async () => {
+  const visited: string[] = [];
+  await expect(() =>
+    runProfiles(
+      [
+        { type: "claude", model: "claude-sonnet-5", token: "first" },
+        { type: "codex", model: "gpt-5.6-terra" },
+      ],
+      (profile) => {
+        visited.push(profile.type);
+        throw new Error("quota parser test failed at line 429");
+      },
+    ),
+  ).rejects.toThrow("quota parser test failed");
+  expect(visited).toStrictEqual(["claude"]);
+});
+
+test("exposes only the selected profile credential to the agent", () => {
+  const base = {
+    PATH: "/usr/bin",
+    HOME: "/home/bot",
+    UNRELATED_SECRET: "must-not-reach-agent",
+    BOT_AGENTS_MASTER_KEY: "master",
+    PROFILES: "contains every secret",
+    REVIEWER_TOKEN: "reviewer",
+    CLAUDE_CODE_OAUTH_TOKEN: "old-claude",
+    ANTHROPIC_API_KEY: "old-anthropic-key",
+    ANTHROPIC_AUTH_TOKEN: "old-anthropic-token",
+    OPENAI_API_KEY: "old-openai",
+    CODEX_API_KEY: "old-codex-key",
+    CODEX_ACCESS_TOKEN: "old-codex-token",
+  };
+  const profile = {
+    index: 0,
+    type: "claude" as const,
+    model: "claude-sonnet-5",
+    uid: 20_000,
+    gid: 20_000,
+    home: "/runtime/profile-0",
+    tokenFile: "/runtime/profile-0/token",
+  };
+
+  expect(agentEnvironment(base, profile, "selected")).toStrictEqual({
+    PATH: "/usr/bin",
+    HOME: "/runtime/profile-0",
+    CLAUDE_CODE_OAUTH_TOKEN: "selected",
+  });
+  expect(sanitizedEnvironment(base)).toStrictEqual({
+    PATH: "/usr/bin",
+    HOME: "/home/bot",
+  });
+});
+
+test("uses a private Codex home without inventing an API credential", () => {
+  const profile = {
+    index: 1,
+    type: "codex" as const,
+    model: "gpt-5.6-terra",
+    uid: 20_001,
+    gid: 20_001,
+    home: "/runtime/profile-1",
+    tokenFile: null,
+  };
+
+  expect(agentEnvironment({ PATH: "/bin" }, profile)).toStrictEqual({
+    PATH: "/bin",
+    HOME: "/runtime/profile-1",
+    CODEX_HOME: "/runtime/profile-1/.codex",
+  });
+});
+
+test("exposes an OpenRouter key only to the OpenCode profile", () => {
+  const profile = {
+    index: 2,
+    type: "opencode" as const,
+    model: "openrouter/qwen/qwen3.8-27b",
+    uid: 20_002,
+    gid: 20_002,
+    home: "/runtime/profile-2",
+    tokenFile: "/runtime/profile-2/token",
+  };
+
+  expect(agentEnvironment({ PATH: "/bin" }, profile, "selected")).toStrictEqual({
+    PATH: "/bin",
+    HOME: "/runtime/profile-2",
+    OPENROUTER_API_KEY: "selected",
+  });
+});

src/profiles.ts

@@ -1,67 +1,105 @@
-export type BotProfile = {
-  type: "claude" | "codex";
+export interface BotProfile {
+  type: "claude" | "codex" | "opencode";
   model: string;
   token?: string;
+}
+
+export function profileFooter(profile: Pick<BotProfile, "type" | "model">): string {
+  return `> Profile: \`${profile.type}\` · \`${profile.model}\``;
+}
+
+export function withProfile(body: string, profile: Pick<BotProfile, "type" | "model">): string {
+  return `${body}\n\n${profileFooter(profile)}`;
+}
+
+export type FailureReason = "sign-in failed" | "usage exhausted" | "failed";
+
+export type ProfileFailure = Pick<BotProfile, "type" | "model"> & {
+  reason: FailureReason;
 };
 
+// Raised once an agent's credentials are rejected and any re-login is spent.
+export class AgentAuthError extends Error {}
+
 function isUsageExhausted(error: unknown): boolean {
-  return /(?:usage|rate) limit|hit your (?:weekly )?limit|insufficient_quota|exceeded your current quota|too many requests|(?:api error|http error|http|status(?: code)?)[ :]+4(?:02|29)\b/i
-    .test(String(error));
+  return /(?:usage|rate) limit|hit your (?:weekly )?limit|insufficient_quota|exceeded your current quota|too many requests|(?:api error|http error|http|status(?: code)?)[ :]+4(?:02|29)\b/iu.test(
+    String(error),
+  );
 }
 
-export async function runProfiles<
-  T,
-  P extends Pick<BotProfile, "type" | "model">,
->(
+function failureReason(error: unknown): FailureReason {
+  if (error instanceof AgentAuthError) return "sign-in failed";
+  return isUsageExhausted(error) ? "usage exhausted" : "failed";
+}
+
+export function failureFooter(failures: ProfileFailure[]): string {
+  if (failures.length === 0) return "> Profile: none";
+  return `> Tried: ${failures
+    .map(({ type, model, reason }) => `\`${type}\` · \`${model}\` (${reason})`)
+    .join(", ")}`;
+}
+
+// Tries the profiles from `index` on, moving on only after a sign-in failure
+// or exhausted usage, and records every profile it tried.
+async function attemptFrom<T, P extends Pick<BotProfile, "type" | "model">>(
   profiles: P[],
   attempt: (profile: P) => Promise<T>,
+  failures: ProfileFailure[],
+  index: number,
 ): Promise<T> {
-  for (const [index, profile] of profiles.entries()) {
-    try {
-      return await attempt(profile);
-    } catch (error) {
-      if (!isUsageExhausted(error) || index === profiles.length - 1) {
-        throw error;
-      }
-      console.error(`${profile.type} usage exhausted; trying next profile`);
-    }
+  const profile = profiles[index];
+  if (profile === undefined) {
+    throw new Error("profiles must contain at least one profile");
+  }
+  try {
+    return await attempt(profile);
+  } catch (error) {
+    const reason = failureReason(error);
+    failures.push({ type: profile.type, model: profile.model, reason });
+    if (reason === "failed" || index === profiles.length - 1) throw error;
+    console.error(`${profile.type} ${reason}; trying next profile`);
+    return attemptFrom(profiles, attempt, failures, index + 1);
   }
-  throw new Error("profiles must contain at least one profile");
 }
 
-export function sanitizedEnvironment(
-  environment: Record<string, string>,
-): Record<string, string> {
+export function runProfiles<T, P extends Pick<BotProfile, "type" | "model">>(
+  profiles: P[],
+  attempt: (profile: P) => Promise<T>,
+  failures: ProfileFailure[] = [],
+): Promise<T> {
+  return attemptFrom(profiles, attempt, failures, 0);
+}
+
+export function sanitizedEnvironment(environment: Record<string, string>): Record<string, string> {
   const result: Record<string, string> = {};
-  for (
-    const name of [
-      "PATH",
-      "HOME",
-      "LANG",
-      "LANGUAGE",
-      "LC_ALL",
-      "TERM",
-      "COLORTERM",
-      "CI",
-      "TMPDIR",
-      "GITEA_TOKEN",
-      "GITEA_API_URL",
-      "GITEA_REPOSITORY",
-      "GITHUB_WORKSPACE",
-      "HTTP_PROXY",
-      "HTTPS_PROXY",
-      "ALL_PROXY",
-      "NO_PROXY",
-      "http_proxy",
-      "https_proxy",
-      "all_proxy",
-      "no_proxy",
-      "SSL_CERT_FILE",
-      "SSL_CERT_DIR",
-      "NODE_EXTRA_CA_CERTS",
-    ]
-  ) {
-    if (environment[name] !== undefined) result[name] = environment[name];
+  for (const name of [
+    "PATH",
+    "HOME",
+    "LANG",
+    "LANGUAGE",
+    "LC_ALL",
+    "TERM",
+    "COLORTERM",
+    "CI",
+    "TMPDIR",
+    "GITEA_TOKEN",
+    "GITEA_API_URL",
+    "GITEA_REPOSITORY",
+    "GITHUB_WORKSPACE",
+    "HTTP_PROXY",
+    "HTTPS_PROXY",
+    "ALL_PROXY",
+    "NO_PROXY",
+    "http_proxy",
+    "https_proxy",
+    "all_proxy",
+    "no_proxy",
+    "SSL_CERT_FILE",
+    "SSL_CERT_DIR",
+    "NODE_EXTRA_CA_CERTS",
+  ]) {
+    const value = environment[name];
+    if (value !== undefined) result[name] = value;
   }
   return result;
 }
@@ -72,12 +110,15 @@ export function agentEnvironment(
   token?: string,
 ): Record<string, string> {
   const result = sanitizedEnvironment(environment);
-  result.HOME = profile.home;
-  if (profile.type === "codex") result.CODEX_HOME = `${profile.home}/.codex`;
-  if (token) {
-    result[
-      profile.type === "claude" ? "CLAUDE_CODE_OAUTH_TOKEN" : "OPENAI_API_KEY"
-    ] = token;
+  result["HOME"] = profile.home;
+  if (profile.type === "codex") result["CODEX_HOME"] = `${profile.home}/.codex`;
+  if (token !== undefined && token !== "") {
+    const tokenName = {
+      claude: "CLAUDE_CODE_OAUTH_TOKEN",
+      codex: "OPENAI_API_KEY",
+      opencode: "OPENROUTER_API_KEY",
+    }[profile.type];
+    result[tokenName] = token;
   }
   return result;
 }

src/profiles_test.ts

@@ -1,160 +0,0 @@
-import { assertEquals, assertRejects } from "jsr:@std/assert@1";
-import {
-  agentEnvironment,
-  runProfiles,
-  sanitizedEnvironment,
-} from "./profiles.ts";
-
-Deno.test("falls through only after usage exhaustion", async () => {
-  const visited: string[] = [];
-  const result = await runProfiles(
-    [
-      { type: "claude", model: "claude-sonnet-5", token: "first" },
-      { type: "codex", model: "gpt-5.6-terra" },
-    ],
-    (profile) => {
-      visited.push(profile.type);
-      if (profile.type === "claude") {
-        throw new Error("You've hit your usage limit");
-      }
-      return Promise.resolve("done");
-    },
-  );
-
-  assertEquals(result, "done");
-  assertEquals(visited, ["claude", "codex"]);
-});
-
-Deno.test("recognizes Claude's weekly limit message", async () => {
-  const result = await runProfiles(
-    [
-      { type: "claude", model: "claude-sonnet-5", token: "first" },
-      { type: "codex", model: "gpt-5.6-terra" },
-    ],
-    (profile) => {
-      if (profile.type === "claude") {
-        throw new Error("You've hit your weekly limit · resets 12am (UTC)");
-      }
-      return Promise.resolve("fallback");
-    },
-  );
-
-  assertEquals(result, "fallback");
-});
-
-Deno.test("recognizes provider API exhaustion status", async () => {
-  const results = await Promise.all(
-    ["API Error: 402 Insufficient funds", "HTTP error: 429"]
-      .map((message) =>
-        runProfiles(
-          [
-            { type: "claude", model: "claude-sonnet-5", token: "first" },
-            { type: "codex", model: "gpt-5.6-terra" },
-          ],
-          (profile) => {
-            if (profile.type === "claude") throw new Error(message);
-            return Promise.resolve("fallback");
-          },
-        )
-      ),
-  );
-
-  assertEquals(results, ["fallback", "fallback"]);
-});
-
-Deno.test("preserves an ordinary agent failure", async () => {
-  const visited: string[] = [];
-  await assertRejects(
-    () =>
-      runProfiles(
-        [
-          { type: "claude", model: "claude-sonnet-5", token: "first" },
-          { type: "codex", model: "gpt-5.6-terra" },
-        ],
-        (profile) => {
-          visited.push(profile.type);
-          throw new Error("tests failed");
-        },
-      ),
-    Error,
-    "tests failed",
-  );
-  assertEquals(visited, ["claude"]);
-});
-
-Deno.test("does not mistake incidental quota text for exhaustion", async () => {
-  const visited: string[] = [];
-  await assertRejects(
-    () =>
-      runProfiles(
-        [
-          { type: "claude", model: "claude-sonnet-5", token: "first" },
-          { type: "codex", model: "gpt-5.6-terra" },
-        ],
-        (profile) => {
-          visited.push(profile.type);
-          throw new Error("quota parser test failed at line 429");
-        },
-      ),
-    Error,
-    "quota parser test failed",
-  );
-  assertEquals(visited, ["claude"]);
-});
-
-Deno.test("exposes only the selected profile credential to the agent", () => {
-  const base = {
-    PATH: "/usr/bin",
-    HOME: "/home/bot",
-    UNRELATED_SECRET: "must-not-reach-agent",
-    BOT_AGENTS_MASTER_KEY: "master",
-    PROFILES: "contains every secret",
-    REVIEWER_TOKEN: "reviewer",
-    CLAUDE_CODE_OAUTH_TOKEN: "old-claude",
-    ANTHROPIC_API_KEY: "old-anthropic-key",
-    ANTHROPIC_AUTH_TOKEN: "old-anthropic-token",
-    OPENAI_API_KEY: "old-openai",
-    CODEX_API_KEY: "old-codex-key",
-    CODEX_ACCESS_TOKEN: "old-codex-token",
-  };
-  const profile = {
-    index: 0,
-    type: "claude" as const,
-    model: "claude-sonnet-5",
-    uid: 20_000,
-    gid: 20_000,
-    home: "/runtime/profile-0",
-    tokenFile: "/runtime/profile-0/token",
-  };
-
-  assertEquals(
-    agentEnvironment(base, profile, "selected"),
-    {
-      PATH: "/usr/bin",
-      HOME: "/runtime/profile-0",
-      CLAUDE_CODE_OAUTH_TOKEN: "selected",
-    },
-  );
-  assertEquals(sanitizedEnvironment(base), {
-    PATH: "/usr/bin",
-    HOME: "/home/bot",
-  });
-});
-
-Deno.test("uses a private Codex home without inventing an API credential", () => {
-  const profile = {
-    index: 1,
-    type: "codex" as const,
-    model: "gpt-5.6-terra",
-    uid: 20_001,
-    gid: 20_001,
-    home: "/runtime/profile-1",
-    tokenFile: null,
-  };
-
-  assertEquals(agentEnvironment({ PATH: "/bin" }, profile), {
-    PATH: "/bin",
-    HOME: "/runtime/profile-1",
-    CODEX_HOME: "/runtime/profile-1/.codex",
-  });
-});

src/run.ts

@@ -1,43 +1,71 @@
 // Runs one ordered agent profile. Credential decryption and reviewer posting
 // live in separate processes so neither privileged secret reaches this runner.
-import { TextLineStream } from "jsr:@std/streams@1/text-line-stream";
+import { chmod, chown, readFile, writeFile } from "node:fs/promises";
+import process from "node:process";
+import { createInterface } from "node:readline";
+import type { Readable } from "node:stream";
+import { text as readText } from "node:stream/consumers";
+import { setTimeout as sleep } from "node:timers/promises";
+
 import {
-  type CodexAuthentication,
   codexAuthentication,
+  isClaudeAuthFailure,
+  isCodexAuthFailure,
   persistCodexAuth,
   retryInvalidToken,
   stageCodexAuth,
 } from "./auth.ts";
+import type { ClaudeFailureFields, CodexAuthentication } from "./auth.ts";
+import { chunks, endWith, output, writeChunk } from "./command.ts";
+import type { CommandStatus } from "./command.ts";
+import { agentCommand, killProfileProcesses, readProfileFile } from "./isolation.ts";
+import { isObject } from "./json.ts";
 import {
-  agentCommand,
-  killProfileProcesses,
-  readProfileFile,
-} from "./isolation.ts";
+  collectOpenCodeOutput,
+  openCodeArgs,
+  openCodeError,
+  parseOpenCodeEvents,
+} from "./opencode.ts";
 import {
+  AgentAuthError,
   agentEnvironment,
   runProfiles,
   sanitizedEnvironment,
+  withProfile,
 } from "./profiles.ts";
-import {
-  readRuntimeManifest,
-  type RuntimeOutcome,
-  type RuntimeProfile,
-} from "./runtime.ts";
+import type { ProfileFailure } from "./profiles.ts";
+import { readRuntimeManifest } from "./runtime.ts";
+import type { RuntimeOutcome, RuntimeProfile } from "./runtime.ts";
 
-type GiteaUser = { login: string; email: string };
-type GiteaComment = { user: GiteaUser; created_at: string; body: string };
-type AttemptResult = {
+interface AttemptResult {
   body: string;
   reviewPath: string;
   anchorsPath: string;
-};
+  profile: Pick<RuntimeProfile, "type" | "model">;
+}
+
+// Claude Code's stream-json `result` event, in its own field names.
+type ClaudeResult = ClaudeFailureFields &
+  Partial<Record<"is_error", boolean>> & {
+    subtype: string;
+  };
 
 const env = (name: string): string => {
-  const value = Deno.env.get(name);
+  const value = process.env[name];
   if (value === undefined) throw new Error(`${name} is not set`);
   return value;
 };
 
+function definedEnvironment(): Record<string, string> {
+  const result: Record<string, string> = {};
+  for (const [name, value] of Object.entries(process.env)) {
+    if (value !== undefined) {
+      result[name] = value;
+    }
+  }
+  return result;
+}
+
 const API = env("GITEA_API_URL");
 const REPO = env("GITEA_REPOSITORY");
 const INDEX = env("ISSUE_INDEX");
@@ -45,7 +73,7 @@ const EVENT = env("EVENT_NAME");
 const AUTHOR_TOKEN = env("GITEA_TOKEN");
 const WORKSPACE = env("GITHUB_WORKSPACE");
 const MANIFEST = await readRuntimeManifest(env("BOT_AGENTS_MANIFEST"));
-const PROCESS_ENV = sanitizedEnvironment(Deno.env.toObject());
+const PROCESS_ENV = sanitizedEnvironment(definedEnvironment());
 const RULES_PATH = "repos/commons/code-rules/raw/README.md";
 const CODEX_AUTH = "/root/.codex/auth.json";
 const SKILLS_INSTALL = "skills add obra/superpowers";
@@ -70,27 +98,22 @@ async function postAuthorComment(body: string): Promise<void> {
 }
 
 async function runRoot(command: string, args: string[]): Promise<void> {
-  const { success, code } = await new Deno.Command(command, {
-    args,
-    env: PROCESS_ENV,
-    clearEnv: true,
-  }).output();
+  const { success, code } = await output(command, { args, env: PROCESS_ENV, clearEnv: true });
   if (!success) throw new Error(`${command} ${args[0]} exited with ${code}`);
 }
 
 async function configureGitAuthor(): Promise<void> {
-  const user: GiteaUser = await (await gitea("user")).json();
-  for (const [key, value] of [["name", user.login], ["email", user.email]]) {
-    await runRoot("git", ["config", `user.${key}`, value]);
+  const user: unknown = await (await gitea("user")).json();
+  if (!isObject(user) || typeof user["login"] !== "string" || typeof user["email"] !== "string") {
+    throw new Error("user: unexpected Gitea response");
   }
+  await runRoot("git", ["config", "user.name", user["login"]]);
+  await runRoot("git", ["config", "user.email", user["email"]]);
 }
 
-async function readProfileToken(
-  profile: RuntimeProfile,
-): Promise<string | undefined> {
-  return profile.tokenFile === null
-    ? undefined
-    : await Deno.readTextFile(profile.tokenFile);
+async function readProfileToken(profile: RuntimeProfile): Promise<string | undefined> {
+  const token = profile.tokenFile === null ? undefined : await readFile(profile.tokenFile, "utf8");
+  return token;
 }
 
 async function runAgentCommand(
@@ -107,25 +130,29 @@ async function runAgentCommand(
   if (!success) throw new Error(`${command} ${args[0]} exited with ${code}`);
 }
 
-async function prepareProfile(
-  profile: RuntimeProfile,
-  token: string | undefined,
-): Promise<void> {
+async function prepareProfile(profile: RuntimeProfile): Promise<void> {
   await runAgentCommand(profile, "git", [
     "config",
     "--global",
     "--add",
     "safe.directory",
     WORKSPACE,
-  ], token);
+  ]);
   await runAgentCommand(profile, "npx", [
     "-y",
     ...SKILLS_INSTALL.split(" "),
     "--global",
     "--agent",
-    profile.type === "claude" ? "claude-code" : "codex",
+    profile.type === "claude" ? "claude-code" : profile.type,
     "--yes",
-  ], token);
+  ]);
+}
+
+// One issue comment as the prompt quotes it.
+function formatComment(comment: unknown): string {
+  const { user, created_at: createdAt, body } = isObject(comment) ? comment : {};
+  const login = isObject(user) ? user["login"] : undefined;
+  return `## ${String(login)} at ${String(createdAt)}\n\n${String(body)}\n`;
 }
 
 async function renderPrompt(
@@ -133,16 +160,15 @@ async function renderPrompt(
 ): Promise<{ prompt: string; reviewPath: string; anchorsPath: string }> {
   const reviewPath = await makeProfileFile(profile, "review.md");
   const anchorsPath = await makeProfileFile(profile, "anchors.json");
-  const comments: GiteaComment[] = await (await gitea(
-    `repos/${REPO}/issues/${INDEX}/comments?limit=100`,
-  )).json();
+  const comments: unknown = await (
+    await gitea(`repos/${REPO}/issues/${INDEX}/comments?limit=100`)
+  ).json();
+  if (!Array.isArray(comments)) {
+    throw new TypeError("comments: unexpected Gitea response");
+  }
   const values: Record<string, string> = {
     COMMENT: env("COMMENT"),
-    ISSUE_COMMENTS: comments
-      .map((comment) =>
-        `## ${comment.user.login} at ${comment.created_at}\n\n${comment.body}\n`
-      )
-      .join("\n"),
+    ISSUE_COMMENTS: comments.map((comment: unknown) => formatComment(comment)).join("\n"),
     CODE_RULES: await (await gitea(RULES_PATH)).text(),
     EVENT_NAME: EVENT,
     GITEA_API_URL: API,
@@ -151,75 +177,89 @@ async function renderPrompt(
     REVIEW_PATH: reviewPath,
     ANCHORS_PATH: anchorsPath,
   };
-  const template = await Deno.readTextFile(
-    new URL("../prompt.md", import.meta.url),
-  );
+  const template = await readFile(new URL("../prompt.md", import.meta.url), "utf8");
   return {
-    prompt: template.replace(
-      /\$\{(\w+)\}/g,
-      (match, name) => values[name] ?? match,
+    prompt: template.replaceAll(
+      /\$\{(\w+)\}/gu,
+      (match: string, name: string) => values[name] ?? match,
     ),
     reviewPath,
     anchorsPath,
   };
 }
 
-async function runClaude(
-  profile: RuntimeProfile,
-  token: string,
-  prompt: string,
-): Promise<string> {
-  const claude = agentCommand(profile, "claude", [
-    "--print",
-    "--dangerously-skip-permissions",
-    "--model",
-    profile.model,
-    "--output-format",
-    "stream-json",
-    "--verbose",
-    prompt,
-  ], {
-    cwd: WORKSPACE,
-    env: {
-      ...agentEnvironment(PROCESS_ENV, profile, token),
-      IS_SANDBOX: "1",
-    },
-    clearEnv: true,
-    stdout: "piped",
-    stderr: "piped",
-  }).spawn();
-  let result:
-    | { is_error?: boolean; result?: string; subtype: string }
-    | undefined;
-  let error = "";
-  const copyError = claude.stderr.pipeThrough(new TextDecoderStream()).pipeTo(
-    new WritableStream({
-      write(chunk) {
-        error += chunk;
-        console.error(chunk);
+async function runClaude(profile: RuntimeProfile, token: string, prompt: string): Promise<string> {
+  const claude = agentCommand(
+    profile,
+    "claude",
+    [
+      "--print",
+      "--dangerously-skip-permissions",
+      "--model",
+      profile.model,
+      "--output-format",
+      "stream-json",
+      "--verbose",
+      prompt,
+    ],
+    {
+      cwd: WORKSPACE,
+      env: {
+        ...agentEnvironment(PROCESS_ENV, profile, token),
+        IS_SANDBOX: "1",
       },
-    }),
-  );
-  const lines = claude.stdout
-    .pipeThrough(new TextDecoderStream())
-    .pipeThrough(new TextLineStream());
-  for await (const line of lines) {
-    if (!line) continue;
-    const event = JSON.parse(line);
-    for (const part of event.message?.content ?? []) {
-      const text = part.thinking ?? part.text ?? part.name;
-      if (text) console.log(text);
+      clearEnv: true,
+      stdout: "piped",
+      stderr: "piped",
+    },
+  ).spawn();
+  let result: ClaudeResult | undefined;
+  let error = "";
+  const copyError = (async (): Promise<void> => {
+    const decoder = new TextDecoder();
+    for await (const chunk of chunks(claude.stderr)) {
+      const part = decoder.decode(chunk, { stream: true });
+      error += part;
+      console.error(part);
+    }
+    error += decoder.decode();
+  })();
+  for await (const line of createInterface({ input: claude.stdout, crlfDelay: Infinity })) {
+    if (line !== "") {
+      const event: unknown = JSON.parse(line);
+      if (isObject(event)) {
+        const content = isObject(event["message"]) ? event["message"]["content"] : undefined;
+        for (const part of Array.isArray(content) ? content : []) {
+          if (isObject(part)) {
+            const text = part["thinking"] ?? part["text"] ?? part["name"];
+            if (typeof text === "string" && text !== "") {
+              console.log(text);
+            }
+          }
+        }
+        if (event["type"] === "result") {
+          const { is_error: isError, result: answer, subtype, api_error_status: apiStatus } = event;
+          result = {
+            is_error: typeof isError === "boolean" ? isError : undefined,
+            result: typeof answer === "string" ? answer : undefined,
+            subtype: String(subtype),
+            api_error_status:
+              typeof apiStatus === "number" || apiStatus === null ? apiStatus : undefined,
+          };
+        }
+      }
     }
-    if (event.type === "result") result = event;
   }
   const [status] = await Promise.all([claude.status, copyError]);
-  if (result?.is_error) {
-    throw new Error(result.result ?? `claude ended with ${result.subtype}`);
+  if (result?.is_error === true) {
+    const failure = new Error(result.result ?? `claude ended with ${result.subtype}`);
+    if (isClaudeAuthFailure(result)) {
+      throw new AgentAuthError("claude sign-in failed", { cause: failure });
+    }
+    throw failure;
   }
   if (result?.result === undefined) {
-    throw new Error(
-      error.trim() || `claude ended with ${result?.subtype ?? "no result"}`,
-    );
+    throw new Error(error.trim() || `claude ended with ${result?.subtype ?? "no result"}`);
   }
   if (!status.success) {
     throw new Error(error.trim() || `claude exited with ${status.code}`);
@@ -227,6 +267,21 @@ async function runClaude(
   return result.result;
 }
 
+// Polls every 100 ms until the login prints something, failing if it exits first.
+async function pollForInstructions(
+  shownText: () => string,
+  status: Promise<CommandStatus>,
+): Promise<void> {
+  if (shownText().trim() !== "") {
+    return;
+  }
+  const exited = await Promise.race([status.then(() => true), sleep(100, false)]);
+  if (exited) {
+    throw new AgentAuthError("AI bot login produced no instructions");
+  }
+  await pollForInstructions(shownText, status);
+}
+
 async function codexDeviceLogin(
   profile: RuntimeProfile,
   environment: Record<string, string>,
@@ -239,24 +294,21 @@ async function codexDeviceLogin(
     stderr: "piped",
   }).spawn();
   let shown = "";
-  const collect = (stream: ReadableStream<Uint8Array>): Promise<void> =>
-    stream.pipeThrough(new TextDecoderStream()).pipeTo(
-      new WritableStream({ write: (chunk) => void (shown += chunk) }),
-    );
+  const collect = async (stream: Readable): Promise<void> => {
+    const decoder = new TextDecoder();
+    for await (const chunk of chunks(stream)) {
+      shown += decoder.decode(chunk, { stream: true });
+    }
+    shown += decoder.decode();
+  };
   const drained = Promise.all([collect(login.stdout), collect(login.stderr)]);
   const status = login.status;
-  await new Promise((resolve) => setTimeout(resolve, 3000));
-  while (shown.trim() === "") {
-    const exited = await Promise.race([
-      status.then(() => true),
-      new Promise<boolean>((resolve) => setTimeout(() => resolve(false), 100)),
-    ]);
-    if (exited) throw new Error("AI bot login produced no instructions");
-  }
-  await postAuthorComment(shown);
+  await sleep(3000);
+  await pollForInstructions(() => shown, status);
+  await postAuthorComment(withProfile(shown, profile));
   const [result] = await Promise.all([status, drained]);
   if (!result.success) {
-    throw new Error(`codex login exited with ${result.code}`);
+    throw new AgentAuthError(`codex login exited with ${result.code}`);
   }
 }
 
@@ -272,26 +324,18 @@ async function codexApiLogin(
     stdin: "piped",
     stderr: "piped",
   }).spawn();
-  const writer = login.stdin.getWriter();
-  await writer.write(new TextEncoder().encode(`${token}\n`));
-  await writer.close();
-  const [status, error] = await Promise.all([
-    login.status,
-    new Response(login.stderr).text(),
-  ]);
+  await endWith(login.stdin, `${token}\n`);
+  const [status, error] = await Promise.all([login.status, readText(login.stderr)]);
   if (!status.success) {
     throw new Error(error.trim() || `codex login exited with ${status.code}`);
   }
 }
 
-async function makeProfileFile(
-  profile: RuntimeProfile,
-  name: string,
-): Promise<string> {
+async function makeProfileFile(profile: RuntimeProfile, name: string): Promise<string> {
   const path = `${profile.home}/${name}`;
-  await Deno.writeTextFile(path, "", { mode: 0o600 });
-  await Deno.chmod(path, 0o600);
-  await Deno.chown(path, profile.uid, profile.gid);
+  await writeFile(path, "", { mode: 0o600 });
+  await chmod(path, 0o600);
+  await chown(path, profile.uid, profile.gid);
   return path;
 }
 
@@ -300,17 +344,12 @@ async function runCodex(
   prompt: string,
   authentication: CodexAuthentication,
 ): Promise<string> {
-  const token = authentication.kind === "api-key"
-    ? authentication.token
-    : undefined;
+  const token = authentication.kind === "api-key" ? authentication.token : undefined;
   const environment = agentEnvironment(PROCESS_ENV, profile, token);
   if (authentication.kind === "api-key") {
     await codexApiLogin(profile, environment, authentication.token);
   } else {
-    const loggedIn = await agentCommand(profile, "codex", [
-      "login",
-      "status",
-    ], {
+    const loggedIn = await agentCommand(profile, "codex", ["login", "status"], {
       cwd: WORKSPACE,
       env: environment,
       clearEnv: true,
@@ -318,50 +357,89 @@ async function runCodex(
     if (!loggedIn.success) await codexDeviceLogin(profile, environment);
   }
   const outputPath = await makeProfileFile(profile, "result.md");
-  const attempt = async () => {
-    const codex = agentCommand(profile, "codex", [
-      "exec",
-      "--model",
-      profile.model,
-      "--dangerously-bypass-approvals-and-sandbox",
-      "--output-last-message",
-      outputPath,
-      prompt,
-    ], {
-      cwd: WORKSPACE,
-      env: environment,
-      clearEnv: true,
-      stdout: "inherit",
-      stderr: "piped",
-    }).spawn();
+  const attempt = async (): Promise<{ status: CommandStatus; error: string }> => {
+    const codex = agentCommand(
+      profile,
+      "codex",
+      [
+        "exec",
+        "--model",
+        profile.model,
+        "--dangerously-bypass-approvals-and-sandbox",
+        "--output-last-message",
+        outputPath,
+        prompt,
+      ],
+      {
+        cwd: WORKSPACE,
+        env: environment,
+        clearEnv: true,
+        stdout: "inherit",
+        stderr: "piped",
+      },
+    ).spawn();
     const decoder = new TextDecoder();
     let error = "";
-    for await (const chunk of codex.stderr) {
-      await Deno.stderr.write(chunk);
+    for await (const chunk of chunks(codex.stderr)) {
+      await writeChunk(process.stderr, chunk);
       error += decoder.decode(chunk, { stream: true });
     }
     error += decoder.decode();
-    return { status: await codex.status, error };
+    // Codex echoes the prompt, whose comments may quote auth errors.
+    return { status: await codex.status, error: error.replaceAll(prompt, "") };
   };
-  const result = authentication.kind === "api-key"
-    ? await attempt()
-    : await retryInvalidToken(attempt, async () => {
-      await runAgentCommand(profile, "codex", ["logout"]);
-      await codexDeviceLogin(profile, environment);
-    });
+  const result =
+    authentication.kind === "api-key"
+      ? await attempt()
+      : await retryInvalidToken(attempt, async () => {
+          await runAgentCommand(profile, "codex", ["logout"]);
+          await codexDeviceLogin(profile, environment);
+        });
   if (!result.status.success) {
-    throw new Error(
-      result.error.trim() || `codex exited with ${result.status.code}`,
-    );
+    const failure = new Error(result.error.trim() || `codex exited with ${result.status.code}`);
+    if (isCodexAuthFailure(result.error)) {
+      throw new AgentAuthError("codex sign-in failed", { cause: failure });
+    }
+    throw failure;
   }
   return outputPath;
 }
 
+async function runOpenCode(
+  profile: RuntimeProfile,
+  token: string,
+  prompt: string,
+): Promise<string> {
+  const child = agentCommand(profile, "opencode", openCodeArgs(profile.model, prompt), {
+    cwd: WORKSPACE,
+    env: agentEnvironment(PROCESS_ENV, profile, token),
+    clearEnv: true,
+    stdout: "piped",
+    stderr: "piped",
+  }).spawn();
+  const collected = collectOpenCodeOutput(
+    chunks(child.stdout),
+    chunks(child.stderr),
+    async (chunk) => {
+      await writeChunk(process.stdout, chunk);
+    },
+    async (chunk) => {
+      await writeChunk(process.stderr, chunk);
+    },
+  );
+  const [status, streams] = await Promise.all([child.status, collected]);
+  const error = streams.stderr.trim();
+  if (!status.success) {
+    throw (
+      openCodeError(streams.stdout) ?? new Error(error || `opencode exited with ${status.code}`)
+    );
+  }
+  return parseOpenCodeEvents(streams.stdout);
+}
+
 async function runProfile(profile: RuntimeProfile): Promise<AttemptResult> {
   const token = await readProfileToken(profile);
-  const authentication = profile.type === "codex"
-    ? codexAuthentication(token)
-    : null;
+  const authentication = profile.type === "codex" ? codexAuthentication(token) : null;
   let stagedCodexAuth: string | null = null;
   let body: string | undefined;
   let resultPath: string | null = null;
@@ -369,21 +447,22 @@ async function runProfile(profile: RuntimeProfile): Promise<AttemptResult> {
   let anchorsPath: string | undefined;
   try {
     if (authentication?.kind === "persistent") {
-      stagedCodexAuth = await stageCodexAuth(
-        CODEX_AUTH,
-        profile.home,
-        profile.uid,
-        profile.gid,
-      );
+      stagedCodexAuth = await stageCodexAuth(CODEX_AUTH, profile.home, profile.uid, profile.gid);
     }
-    await prepareProfile(profile, token);
+    await prepareProfile(profile);
     const rendered = await renderPrompt(profile);
     reviewPath = rendered.reviewPath;
     anchorsPath = rendered.anchorsPath;
     if (profile.type === "claude") {
       body = await runClaude(profile, token ?? "", rendered.prompt);
+    } else if (profile.type === "codex") {
+      resultPath = await runCodex(
+        profile,
+        rendered.prompt,
+        authentication ?? codexAuthentication(token),
+      );
     } else {
-      resultPath = await runCodex(profile, rendered.prompt, authentication!);
+      body = await runOpenCode(profile, token ?? "", rendered.prompt);
     }
   } finally {
     await killProfileProcesses(profile.uid);
@@ -392,29 +471,33 @@ async function runProfile(profile: RuntimeProfile): Promise<AttemptResult> {
     }
   }
   if (resultPath !== null) body = await readProfileFile(profile, resultPath);
-  if (
-    body === undefined || reviewPath === undefined || anchorsPath === undefined
-  ) {
+  if (body === undefined || reviewPath === undefined || anchorsPath === undefined) {
     throw new Error("agent attempt produced no result");
   }
-  return { body, reviewPath, anchorsPath };
+  return {
+    body,
+    reviewPath,
+    anchorsPath,
+    profile: { type: profile.type, model: profile.model },
+  };
 }
 
 async function writeOutcome(outcome: RuntimeOutcome): Promise<void> {
-  await Deno.writeTextFile(MANIFEST.outcomeFile, JSON.stringify(outcome), {
+  await writeFile(MANIFEST.outcomeFile, JSON.stringify(outcome), {
     mode: 0o600,
   });
-  await Deno.chmod(MANIFEST.outcomeFile, 0o600);
+  await chmod(MANIFEST.outcomeFile, 0o600);
 }
 
+const failures: ProfileFailure[] = [];
 try {
   await configureGitAuthor();
   await writeOutcome({
     ok: true,
-    ...await runProfiles(MANIFEST.profiles, runProfile),
+    ...(await runProfiles(MANIFEST.profiles, runProfile, failures)),
   });
 } catch (error) {
   console.error(error);
-  await writeOutcome({ ok: false });
+  await writeOutcome({ ok: false, failures });
   throw error;
 }

src/runtime.test.ts

@@ -0,0 +1,105 @@
+import { chmod, readdir, readFile, rm, stat, writeFile } from "node:fs/promises";
+import process from "node:process";
+import { fileURLToPath } from "node:url";
+
+import { assert, expect, test } from "vite-plus/test";
+
+import { output } from "./command.ts";
+import { prepareRuntime } from "./runtime.ts";
+import type { RuntimeProfile } from "./runtime.ts";
+import { IS_ROOT, makeTempDir } from "#testing";
+
+const MASTER_KEY = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8";
+const ENCRYPTED = "v1:ICEiIyQlJicoKSor:oV_FAgnsN3p1FyegJxwGVdyjfyPio6qDeSUwbA";
+
+// Runs `command` as the profile's user, from the root directory.
+async function runAs(profile: RuntimeProfile, command: string, path: string): Promise<boolean> {
+  const result = await output(command, {
+    args: [path],
+    cwd: "/",
+    uid: profile.uid,
+    gid: profile.gid,
+  });
+  return result.success;
+}
+
+async function expectPrivate(path: string, uid: number, mode: number): Promise<void> {
+  const info = await stat(path);
+  expect(info.uid).toStrictEqual(uid);
+  expect(info.mode & 0o777).toBe(mode);
+}
+
+test.skipIf(!IS_ROOT)("prepares root-only reviewer and isolated profile credentials", async () => {
+  const root = await makeTempDir();
+  await chmod(root, 0o711);
+  const action = await makeTempDir();
+  try {
+    await writeFile(
+      `${action}/profiles.json`,
+      JSON.stringify({
+        "reviewer-token": ENCRYPTED,
+        profiles: [{ type: "claude", token: ENCRYPTED }, { type: "codex" }],
+      }),
+    );
+
+    const manifest = await prepareRuntime(action, root, MASTER_KEY);
+    const serialized = await readFile(manifest.manifestPath, "utf8");
+    assert(!serialized.includes("secret-token"));
+    expect(await readFile(manifest.reviewerFile, "utf8")).toBe("secret-token");
+    await expectPrivate(manifest.reviewerFile, 0, 0o600);
+
+    const [claude, codex] = manifest.profiles;
+    assert(claude !== undefined && codex !== undefined);
+    expect(claude.uid).not.toStrictEqual(codex.uid);
+    await expectPrivate(claude.home, claude.uid, 0o700);
+    assert(claude.tokenFile !== null);
+    expect(await readFile(claude.tokenFile, "utf8")).toBe("secret-token");
+    await expectPrivate(claude.tokenFile, claude.uid, 0o600);
+    expect((await stat(codex.home)).uid).toStrictEqual(codex.uid);
+    expect(codex.tokenFile).toBe(null);
+
+    const ownToken = await output("/bin/cat", {
+      args: [claude.tokenFile],
+      cwd: "/",
+      uid: claude.uid,
+      gid: claude.gid,
+    });
+    expect(ownToken.success).toBe(true);
+    expect(new TextDecoder().decode(ownToken.stdout)).toBe("secret-token");
+    expect(await runAs(claude, "/bin/cat", manifest.reviewerFile)).toBe(false);
+    expect(await runAs(claude, "/bin/ls", codex.home)).toBe(false);
+  } finally {
+    await rm(root, { recursive: true });
+    await rm(action, { recursive: true });
+  }
+});
+
+test.skipIf(!IS_ROOT)("removes prepared credentials when output publication fails", async () => {
+  const root = await makeTempDir();
+  const action = await makeTempDir();
+  try {
+    await writeFile(
+      `${action}/profiles.json`,
+      JSON.stringify({
+        "reviewer-token": ENCRYPTED,
+        profiles: [{ type: "claude", token: ENCRYPTED }],
+      }),
+    );
+    const result = await output(process.execPath, {
+      args: [fileURLToPath(new URL("prepare.ts", import.meta.url))],
+      env: {
+        ACTION_PATH: action,
+        RUNNER_TEMP: root,
+        BOT_AGENTS_MASTER_KEY: MASTER_KEY,
+        GITHUB_OUTPUT: action,
+      },
+      clearEnv: true,
+    });
+
+    expect(result.success).toBe(false);
+    expect(await readdir(root)).toStrictEqual([]);
+  } finally {
+    await rm(root, { recursive: true });
+    await rm(action, { recursive: true });
+  }
+});

src/runtime.ts

@@ -1,6 +1,9 @@
-import { join } from "jsr:@std/path@1";
+import { chmod, chown, mkdir, mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
+import { join } from "node:path";
+
 import { parseCredentials } from "./credentials.ts";
-import type { BotProfile } from "./profiles.ts";
+import { isMapping } from "./json.ts";
+import type { BotProfile, ProfileFailure } from "./profiles.ts";
 
 const FIRST_PROFILE_UID = 20_000;
 
@@ -12,32 +15,28 @@ export type RuntimeProfile = Pick<BotProfile, "type" | "model"> & {
   tokenFile: string | null;
 };
 
-export type RuntimeManifest = {
+export interface RuntimeManifest {
   runtimeDir: string;
   manifestPath: string;
   reviewerFile: string;
   outcomeFile: string;
   profiles: RuntimeProfile[];
-};
+}
 
 export type RuntimeOutcome =
   | {
-    ok: true;
-    body: string;
-    reviewPath: string;
-    anchorsPath: string;
-  }
-  | { ok: false };
+      ok: true;
+      body: string;
+      reviewPath: string;
+      anchorsPath: string;
+      profile: Pick<RuntimeProfile, "type" | "model">;
+    }
+  | { ok: false; failures: ProfileFailure[] };
 
-async function writePrivate(
-  path: string,
-  value: string,
-  uid: number,
-  gid: number,
-): Promise<void> {
-  await Deno.writeTextFile(path, value, { mode: 0o600 });
-  await Deno.chmod(path, 0o600);
-  await Deno.chown(path, uid, gid);
+async function writePrivate(path: string, value: string, uid: number, gid: number): Promise<void> {
+  await writeFile(path, value, { mode: 0o600 });
+  await chmod(path, 0o600);
+  await chown(path, uid, gid);
 }
 
 export async function prepareRuntime(
@@ -46,39 +45,42 @@ export async function prepareRuntime(
   masterKey: string,
 ): Promise<RuntimeManifest> {
   const credentials = await parseCredentials(
-    await Deno.readTextFile(join(actionPath, "profiles.yml")),
+    await readFile(join(actionPath, "profiles.json"), "utf8"),
     masterKey,
   );
-  const runtimeDir = await Deno.makeTempDir({
-    dir: runtimeRoot,
-    prefix: "bot-agents-",
-  });
+  const runtimeDir = await mkdtemp(join(runtimeRoot, "bot-agents-"));
   try {
-    await Deno.chmod(runtimeDir, 0o711);
+    await chmod(runtimeDir, 0o711);
     const reviewerFile = join(runtimeDir, "reviewer-token");
     await writePrivate(reviewerFile, credentials.reviewerToken, 0, 0);
 
-    const profiles: RuntimeProfile[] = [];
-    for (const [index, profile] of credentials.profiles.entries()) {
-      const uid = FIRST_PROFILE_UID + index;
-      const home = join(runtimeDir, `profile-${index}`);
-      await Deno.mkdir(home, { mode: 0o700 });
-      await Deno.chmod(home, 0o700);
-      await Deno.chown(home, uid, uid);
-      const tokenFile = profile.token ? join(home, "token") : null;
-      if (tokenFile !== null) {
-        await writePrivate(tokenFile, profile.token!, uid, uid);
-      }
-      profiles.push({
-        index,
-        type: profile.type,
-        model: profile.model,
-        uid,
-        gid: uid,
-        home,
-        tokenFile,
-      });
-    }
+    // One profile at a time, in order, as each claims the next UID.
+    const profiles = await credentials.profiles.reduce<Promise<RuntimeProfile[]>>(
+      async (previous, profile, index) => {
+        const prepared = await previous;
+        const uid = FIRST_PROFILE_UID + index;
+        const home = join(runtimeDir, `profile-${index}`);
+        await mkdir(home, { mode: 0o700 });
+        await chmod(home, 0o700);
+        await chown(home, uid, uid);
+        const tokenFile =
+          profile.token === undefined || profile.token === "" ? null : join(home, "token");
+        if (tokenFile !== null && profile.token !== undefined) {
+          await writePrivate(tokenFile, profile.token, uid, uid);
+        }
+        prepared.push({
+          index,
+          type: profile.type,
+          model: profile.model,
+          uid,
+          gid: uid,
+          home,
+          tokenFile,
+        });
+        return prepared;
+      },
+      Promise.resolve([]),
+    );
 
     const manifestPath = join(runtimeDir, "manifest.json");
     const manifest: RuntimeManifest = {
@@ -91,13 +93,26 @@ export async function prepareRuntime(
     await writePrivate(manifestPath, JSON.stringify(manifest), 0, 0);
     return manifest;
   } catch (error) {
-    await Deno.remove(runtimeDir, { recursive: true }).catch(() => undefined);
+    await rm(runtimeDir, { recursive: true }).catch(() => {});
     throw error;
   }
 }
 
-export async function readRuntimeManifest(
-  path: string,
-): Promise<RuntimeManifest> {
-  return JSON.parse(await Deno.readTextFile(path));
+function isRuntimeManifest(value: unknown): value is RuntimeManifest {
+  return (
+    isMapping(value) &&
+    typeof value["runtimeDir"] === "string" &&
+    typeof value["manifestPath"] === "string" &&
+    typeof value["reviewerFile"] === "string" &&
+    typeof value["outcomeFile"] === "string" &&
+    Array.isArray(value["profiles"])
+  );
+}
+
+export async function readRuntimeManifest(path: string): Promise<RuntimeManifest> {
+  const value: unknown = JSON.parse(await readFile(path, "utf8"));
+  if (!isRuntimeManifest(value)) {
+    throw new Error(`${path}: invalid runtime manifest`);
+  }
+  return value;
 }

src/runtime_test.ts

@@ -1,108 +0,0 @@
-import { assert, assertEquals, assertNotEquals } from "jsr:@std/assert@1";
-import { prepareRuntime } from "./runtime.ts";
-
-const MASTER_KEY = "AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8";
-const ENCRYPTED = "v1:ICEiIyQlJicoKSor:oV_FAgnsN3p1FyegJxwGVdyjfyPio6qDeSUwbA";
-
-Deno.test({
-  name: "prepares root-only reviewer and isolated profile credentials",
-  permissions: { read: true, write: true, run: true, sys: ["uid"] },
-  async fn() {
-    if (Deno.uid() !== 0) return;
-    const root = await Deno.makeTempDir();
-    await Deno.chmod(root, 0o711);
-    const action = await Deno.makeTempDir();
-    try {
-      await Deno.writeTextFile(
-        `${action}/profiles.yml`,
-        `reviewer-token: ${ENCRYPTED}\nprofiles:\n  - type: claude\n    token: ${ENCRYPTED}\n  - type: codex\n`,
-      );
-
-      const manifest = await prepareRuntime(action, root, MASTER_KEY);
-      const serialized = await Deno.readTextFile(manifest.manifestPath);
-      assert(!serialized.includes("secret-token"));
-      assertEquals(
-        await Deno.readTextFile(manifest.reviewerFile),
-        "secret-token",
-      );
-      assertEquals(
-        (await Deno.stat(manifest.reviewerFile)).mode! & 0o777,
-        0o600,
-      );
-      assertEquals((await Deno.stat(manifest.reviewerFile)).uid, 0);
-
-      const [claude, codex] = manifest.profiles;
-      assertNotEquals(claude.uid, codex.uid);
-      assertEquals((await Deno.stat(claude.home)).uid, claude.uid);
-      assertEquals((await Deno.stat(claude.home)).mode! & 0o777, 0o700);
-      assert(claude.tokenFile !== null);
-      assertEquals(await Deno.readTextFile(claude.tokenFile), "secret-token");
-      assertEquals((await Deno.stat(claude.tokenFile)).uid, claude.uid);
-      assertEquals((await Deno.stat(claude.tokenFile)).mode! & 0o777, 0o600);
-      assertEquals((await Deno.stat(codex.home)).uid, codex.uid);
-      assertEquals(codex.tokenFile, null);
-
-      const ownToken = await new Deno.Command("/bin/cat", {
-        args: [claude.tokenFile],
-        cwd: "/",
-        uid: claude.uid,
-        gid: claude.gid,
-      }).output();
-      assertEquals(ownToken.success, true);
-      assertEquals(new TextDecoder().decode(ownToken.stdout), "secret-token");
-
-      const reviewerToken = await new Deno.Command("/bin/cat", {
-        args: [manifest.reviewerFile],
-        cwd: "/",
-        uid: claude.uid,
-        gid: claude.gid,
-      }).output();
-      assertEquals(reviewerToken.success, false);
-
-      const siblingHome = await new Deno.Command("/bin/ls", {
-        args: [codex.home],
-        cwd: "/",
-        uid: claude.uid,
-        gid: claude.gid,
-      }).output();
-      assertEquals(siblingHome.success, false);
-    } finally {
-      await Deno.remove(root, { recursive: true });
-      await Deno.remove(action, { recursive: true });
-    }
-  },
-});
-
-Deno.test({
-  name: "removes prepared credentials when output publication fails",
-  permissions: "inherit",
-  async fn() {
-    if (Deno.uid() !== 0) return;
-    const root = await Deno.makeTempDir();
-    const action = await Deno.makeTempDir();
-    try {
-      await Deno.writeTextFile(
-        `${action}/profiles.yml`,
-        `reviewer-token: ${ENCRYPTED}\nprofiles:\n  - type: claude\n    token: ${ENCRYPTED}\n`,
-      );
-      const result = await new Deno.Command(Deno.execPath(), {
-        args: ["run", "-A", new URL("./prepare.ts", import.meta.url).pathname],
-        env: {
-          ACTION_PATH: action,
-          RUNNER_TEMP: root,
-          BOT_AGENTS_MASTER_KEY: MASTER_KEY,
-          GITHUB_OUTPUT: action,
-        },
-        clearEnv: true,
-      }).output();
-
-      assertEquals(result.success, false);
-      const entries = [];
-      for await (const entry of Deno.readDir(root)) entries.push(entry.name);
-      assertEquals(entries, []);
-    } finally {
-      await Deno.remove(root, { recursive: true });
-      await Deno.remove(action, { recursive: true });
-    }
-  },
-});

src/testing/index.ts

@@ -0,0 +1,47 @@
+// Test support: the current user's IDs, a fresh temporary directory, and a
+// plain command runner. It imports no source module, so the repository-level
+// tests in tests/, which reach src/ only through `#testing`, never touch
+// internals.
+import { spawn } from "node:child_process";
+import { once } from "node:events";
+import { mkdtemp } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import process from "node:process";
+import { text } from "node:stream/consumers";
+
+export function currentUid(): number {
+  return process.getuid?.() ?? -1;
+}
+
+export function currentGid(): number {
+  return process.getgid?.() ?? -1;
+}
+
+// The isolation tests switch UIDs, which only root may do.
+export const IS_ROOT: boolean = currentUid() === 0;
+
+// Symlinks and POSIX modes, as these tests use them, need a Unix host.
+export const IS_WINDOWS: boolean = process.platform === "win32";
+
+export function makeTempDir(): Promise<string> {
+  return mkdtemp(join(tmpdir(), "bot-agents-test-"));
+}
+
+export interface CommandResult {
+  success: boolean;
+  stderr: string;
+}
+
+// Runs a command with stdin closed and only the given environment, and
+// collects its stderr.
+export async function runCommand(
+  command: string,
+  args: string[],
+  env: Record<string, string>,
+): Promise<CommandResult> {
+  const child = spawn(command, args, { env, stdio: ["ignore", "ignore", "pipe"] });
+  const [stderr, closed] = await Promise.all([text(child.stderr), once(child, "close")]);
+  const exitCode: unknown = closed[0];
+  return { success: exitCode === 0, stderr };
+}

src/workflow_test.ts

@@ -1,165 +0,0 @@
-import { assert, assertEquals } from "jsr:@std/assert@1";
-import { parse } from "jsr:@std/yaml@1";
-
-type Mapping = Record<string, unknown>;
-
-const mapping = (value: unknown, at: string): Mapping => {
-  assert(
-    typeof value === "object" && value !== null && !Array.isArray(value),
-    at,
-  );
-  return value as Mapping;
-};
-
-const sequence = (value: unknown, at: string): Mapping[] => {
-  assert(Array.isArray(value), at);
-  return value.map((entry, index) => mapping(entry, `${at}[${index}]`));
-};
-
-async function yaml(path: string): Promise<Mapping> {
-  return mapping(parse(await Deno.readTextFile(path)), path);
-}
-
-async function yamlFiles(directory = "."): Promise<string[]> {
-  const result: string[] = [];
-  for await (const entry of Deno.readDir(directory)) {
-    if (entry.name === ".git" || entry.name === ".superpowers") continue;
-    const path = directory === "." ? entry.name : `${directory}/${entry.name}`;
-    if (entry.isDirectory) result.push(...await yamlFiles(path));
-    if (entry.isFile && /\.ya?ml$/.test(entry.name)) result.push(path);
-  }
-  return result;
-}
-
-Deno.test("all committed YAML parses", async () => {
-  const files = await yamlFiles();
-  assert(files.length > 0);
-  for (const file of files) await yaml(file);
-});
-
-Deno.test("the action exposes only the master key and scopes it to preparation", async () => {
-  const action = await yaml("action.yml");
-  assertEquals(Object.keys(mapping(action.inputs, "inputs")), ["master-key"]);
-  const steps = sequence(mapping(action.runs, "runs").steps, "runs.steps");
-  for (const step of steps) {
-    if (typeof step.run === "string") {
-      assertEquals(step.run.includes("\n"), false, String(step.name));
-    }
-  }
-  const checkout = steps.find((step) => step.uses === "actions/checkout@v4");
-  const prepare = steps.find((step) => step.id === "prepare");
-  const agent = steps.find((step) => step.id === "agent");
-  const post = steps.find((step) => step.id === "post");
-  const source = steps.find((step) => step.id === "source");
-  assert(checkout && source && prepare && agent && post);
-  assertEquals(
-    mapping(checkout.with, "checkout.with").token,
-    "${{ gitea.token }}",
-  );
-  assertEquals(
-    mapping(prepare.env, "prepare.env").BOT_AGENTS_MASTER_KEY,
-    "${{ inputs.master-key }}",
-  );
-  assertEquals(JSON.stringify(agent).includes("BOT_AGENTS_MASTER_KEY"), false);
-  assertEquals(JSON.stringify(post).includes("BOT_AGENTS_MASTER_KEY"), false);
-  assertEquals(
-    mapping(agent.env, "agent.env").GITEA_TOKEN,
-    "${{ gitea.token }}",
-  );
-  assert(String(post.if).includes("always()"));
-  for (const step of [prepare, agent, post]) {
-    assert(String(step.run).includes("steps.source.outputs.path"));
-  }
-});
-
-Deno.test("the source protection script stages immutable action files", async () => {
-  const temp = await Deno.makeTempDir();
-  const outputFile = `${temp}/output`;
-  try {
-    const output = await new Deno.Command("/bin/bash", {
-      args: ["scripts/protect-source.sh"],
-      env: {
-        ACTION_PATH: Deno.cwd(),
-        GITHUB_OUTPUT: outputFile,
-        RUNNER_TEMP: temp,
-      },
-      stderr: "piped",
-    }).output();
-    assert(output.success, new TextDecoder().decode(output.stderr));
-
-    const path = (await Deno.readTextFile(outputFile)).trim().slice(5);
-    for (
-      const file of [
-        "src/prepare.ts",
-        "src/run.ts",
-        "src/post.ts",
-        "profiles.yml",
-        "prompt.md",
-      ]
-    ) {
-      const stat = await Deno.stat(`${path}/${file}`);
-      assert(stat.isFile, file);
-      assertEquals(stat.mode! & 0o022, 0, file);
-    }
-  } finally {
-    await Deno.remove(temp, { recursive: true });
-  }
-});
-
-Deno.test("module-relative runtime assets exist", async () => {
-  const module = new URL("run.ts", import.meta.url);
-  const source = await Deno.readTextFile(module);
-  for (
-    const match of source.matchAll(/new URL\("([^"]+)", import\.meta\.url\)/g)
-  ) {
-    const asset = new URL(match[1], module);
-    const stat = await Deno.stat(asset);
-    assert(stat.isFile, asset.pathname);
-  }
-});
-
-Deno.test("the repository uses its trusted main action", async () => {
-  const workflow = await yaml(".gitea/workflows/agents.yml");
-  const job = mapping(mapping(workflow.jobs, "jobs").agent, "jobs.agent");
-  const permissions = mapping(job.permissions, "jobs.agent.permissions");
-  assertEquals(permissions, {
-    code: "write",
-    issues: "write",
-    "pull-requests": "write",
-  });
-  const steps = sequence(job.steps, "jobs.agent.steps");
-  const local = steps.findIndex((step) => step.uses === "./");
-  assertEquals(local, -1);
-  const trusted = steps.findIndex((step) =>
-    step.uses === "https://git.capsulizers.com/commons/bot-agents@main"
-  );
-  assert(trusted >= 0);
-  assertEquals(
-    mapping(steps[trusted].with, "trusted.with")["master-key"],
-    "${{ secrets.BOT_AGENTS_MASTER_KEY }}",
-  );
-  assertEquals(JSON.stringify(workflow).includes("gitea.actor != 'bot'"), true);
-});
-
-Deno.test("CI checks every phase and the root isolation suite", async () => {
-  const workflow = await yaml(".gitea/workflows/check.yml");
-  const job = mapping(mapping(workflow.jobs, "jobs").deno, "jobs.deno");
-  const commands = sequence(job.steps, "jobs.deno.steps")
-    .map((step) => typeof step.run === "string" ? step.run : "")
-    .join("\n");
-  for (const entrypoint of ["src/prepare.ts", "src/run.ts", "src/post.ts"]) {
-    assert(commands.includes(entrypoint), entrypoint);
-  }
-  assert(commands.includes("deno test --allow-all"));
-});
-
-Deno.test("uses the standard Skills installer without custom discovery", async () => {
-  const runner = await Deno.readTextFile("src/run.ts");
-  assert(runner.includes("skills add obra/superpowers"));
-  try {
-    await Deno.stat("superpowers.ts");
-    assert(false, "superpowers.ts should be removed");
-  } catch (error) {
-    assert(error instanceof Deno.errors.NotFound);
-  }
-});

tests/entrypoints.test.ts

@@ -0,0 +1,22 @@
+import process from "node:process";
+import { fileURLToPath } from "node:url";
+
+import { expect, test } from "vite-plus/test";
+
+import { runCommand } from "#testing";
+
+// Each phase runs as `node src/<phase>.ts` with no build step. Node loads the
+// whole import graph, stripping types, before the phase reads its first
+// variable, so failing on that variable proves every module loads.
+const PHASES: [phase: string, firstVariable: string][] = [
+  ["prepare", "ACTION_PATH"],
+  ["run", "GITEA_API_URL"],
+  ["post", "BOT_AGENTS_MANIFEST"],
+];
+
+test.each(PHASES)("Node loads the %s phase", async (phase, firstVariable) => {
+  const path = fileURLToPath(new URL(`../src/${phase}.ts`, import.meta.url));
+  const result = await runCommand(process.execPath, [path], { PATH: process.env["PATH"] ?? "" });
+  expect(result.success).toBe(false);
+  expect(result.stderr).toContain(`${firstVariable} is not set`);
+});

tests/workflow.test.ts

@@ -0,0 +1,177 @@
+import { readdir, readFile, rm, stat } from "node:fs/promises";
+import process from "node:process";
+
+import { assert, expect, test } from "vite-plus/test";
+import { parse } from "yaml";
+
+import { makeTempDir, runCommand } from "#testing";
+
+type JsonObject = Record<string, unknown>;
+
+const isMapping = (value: unknown): value is JsonObject =>
+  typeof value === "object" && value !== null && !Array.isArray(value);
+
+const mapping = (value: unknown, at: string): JsonObject => {
+  assert(isMapping(value), at);
+  return value;
+};
+
+const sequence = (value: unknown, at: string): JsonObject[] => {
+  assert(Array.isArray(value), at);
+  return value.map((entry: unknown, index) => mapping(entry, `${at}[${index}]`));
+};
+
+async function yaml(path: string): Promise<JsonObject> {
+  const value: unknown = parse(await readFile(path, "utf8"));
+  return mapping(value, path);
+}
+
+async function yamlFiles(): Promise<string[]> {
+  const entries = await readdir(".", { recursive: true, withFileTypes: true });
+  return entries
+    .filter((entry) => entry.isFile() && /\.ya?ml$/u.test(entry.name))
+    .map((entry) => `${entry.parentPath}/${entry.name}`.replace(/^\.\//u, ""))
+    .filter((path) => !/^(?:\.git|\.superpowers|node_modules)\//u.test(path));
+}
+
+const findStep = (steps: JsonObject[], key: string, value: string): JsonObject => {
+  const step = steps.find((entry) => entry[key] === value);
+  assert(step !== undefined, `${key}: ${value}`);
+  return step;
+};
+
+test("all committed YAML parses", async () => {
+  const files = await yamlFiles();
+  assert(files.length > 0);
+  await Promise.all(files.map((file) => yaml(file)));
+});
+
+test("the action exposes only the master key and scopes it to preparation", async () => {
+  const action = await yaml("action.yml");
+  expect(Object.keys(mapping(action["inputs"], "inputs"))).toStrictEqual(["master-key"]);
+  const steps = sequence(mapping(action["runs"], "runs")["steps"], "runs.steps");
+  for (const step of steps) {
+    if (typeof step["run"] === "string") {
+      expect(step["run"].includes("\n"), String(step["name"])).toBe(false);
+    }
+  }
+  const checkout = findStep(steps, "uses", "actions/checkout@v4");
+  const prepare = findStep(steps, "id", "prepare");
+  const agent = findStep(steps, "id", "agent");
+  const post = findStep(steps, "id", "post");
+  findStep(steps, "id", "source");
+  expect(mapping(checkout["with"], "checkout.with")["token"]).toBe("${{ gitea.token }}");
+  expect(mapping(prepare["env"], "prepare.env")["BOT_AGENTS_MASTER_KEY"]).toBe(
+    "${{ inputs.master-key }}",
+  );
+  expect(JSON.stringify(agent).includes("BOT_AGENTS_MASTER_KEY")).toBe(false);
+  expect(JSON.stringify(post).includes("BOT_AGENTS_MASTER_KEY")).toBe(false);
+  expect(mapping(agent["env"], "agent.env")["GITEA_TOKEN"]).toBe("${{ gitea.token }}");
+  assert(String(post["if"]).includes("always()"));
+  for (const step of [prepare, agent, post]) {
+    assert(String(step["run"]).includes("steps.source.outputs.path"));
+  }
+});
+
+test("the source protection script stages immutable action files", async () => {
+  const temp = await makeTempDir();
+  const outputFile = `${temp}/output`;
+  try {
+    const result = await runCommand("/bin/bash", ["scripts/protect-source.sh"], {
+      ...process.env,
+      ACTION_PATH: process.cwd(),
+      GITHUB_OUTPUT: outputFile,
+      RUNNER_TEMP: temp,
+    });
+    assert(result.success, result.stderr);
+
+    const path = (await readFile(outputFile, "utf8")).trim().slice(5);
+    const files = [
+      "src/prepare.ts",
+      "src/run.ts",
+      "src/post.ts",
+      "package.json",
+      "profiles.json",
+      "prompt.md",
+    ];
+    const stats = await Promise.all(files.map((file) => stat(`${path}/${file}`)));
+    for (const [index, info] of stats.entries()) {
+      assert(info.isFile(), files[index]);
+      expect(info.mode & 0o022, files[index]).toStrictEqual(0);
+    }
+  } finally {
+    await rm(temp, { recursive: true });
+  }
+});
+
+test("module-relative runtime assets exist", async () => {
+  const module = new URL("../src/run.ts", import.meta.url);
+  const source = await readFile(module, "utf8");
+  const assets = [...source.matchAll(/new URL\("([^"]+)", import\.meta\.url\)/gu)].map(
+    ([, asset = ""]) => new URL(asset, module),
+  );
+  const stats = await Promise.all(assets.map((asset) => stat(asset)));
+  for (const [index, info] of stats.entries()) {
+    assert(info.isFile(), assets[index]?.pathname);
+  }
+});
+
+test("the repository uses its trusted main action", async () => {
+  const workflow = await yaml(".gitea/workflows/agents.yml");
+  const job = mapping(mapping(workflow["jobs"], "jobs")["agent"], "jobs.agent");
+  const permissions = mapping(job["permissions"], "jobs.agent.permissions");
+  expect(permissions).toStrictEqual({
+    code: "write",
+    issues: "write",
+    "pull-requests": "write",
+  });
+  const steps = sequence(job["steps"], "jobs.agent.steps");
+  expect(steps.findIndex((step) => step["uses"] === "./")).toStrictEqual(-1);
+  const trusted = findStep(steps, "uses", "https://git.capsulizers.com/commons/bot-agents@main");
+  expect(mapping(trusted["with"], "trusted.with")["master-key"]).toBe(
+    "${{ secrets.BOT_AGENTS_MASTER_KEY }}",
+  );
+  expect(JSON.stringify(workflow).includes("gitea.actor != 'bot'")).toBe(true);
+});
+
+test("CI checks every phase and the root isolation suite", async () => {
+  const workflow = await yaml(".gitea/workflows/check.yml");
+  const job = mapping(mapping(workflow["jobs"], "jobs")["check"], "jobs.check");
+  const commands = sequence(job["steps"], "jobs.check.steps")
+    .map((step) => (typeof step["run"] === "string" ? step["run"] : ""))
+    .join("\n");
+  // `vp check` type-checks every phase, and `vp test` runs each of them under
+  // Node as well as the root-only isolation tests.
+  assert(commands.includes("npm ci"));
+  assert(commands.includes("vp check"));
+  assert(commands.includes("vp test"));
+});
+
+test("uses the standard Skills installer without custom discovery", async () => {
+  const runner = await readFile("src/run.ts", "utf8");
+  assert(runner.includes("skills add obra/superpowers"));
+  const removed = await stat("superpowers.ts").then(
+    () => false,
+    (error: unknown) => error instanceof Error && "code" in error && error.code === "ENOENT",
+  );
+  assert(removed, "superpowers.ts should be removed");
+});
+
+test("installs the OpenCode CLI", async () => {
+  const action = await readFile("action.yml", "utf8");
+  assert(action.includes("opencode-ai"));
+});
+
+test("profile preparation does not receive provider credentials", async () => {
+  const runner = await readFile("src/run.ts", "utf8");
+  assert(runner.includes("await prepareProfile(profile);"));
+  expect(runner.includes("prepareProfile(profile, token)")).toBe(false);
+});
+
+test("central profiles fall back from Codex to Claude to OpenCode", async () => {
+  const credentials: unknown = JSON.parse(await readFile("profiles.json", "utf8"));
+  const profiles = sequence(mapping(credentials, "profiles.json")["profiles"], "profiles");
+  expect(profiles.map((profile) => profile["type"])).toStrictEqual(["codex", "claude", "opencode"]);
+  expect(profiles[2]?.["model"]).toBe("openrouter/qwen/qwen3.8-27b");
+  assert(String(profiles[2]?.["token"]).startsWith("v1:"));
+});

tsconfig.json

@@ -0,0 +1,22 @@
+{
+  "compilerOptions": {
+    "target": "es2024",
+    "module": "nodenext",
+    "lib": ["es2024"],
+    "types": ["node"],
+    "noEmit": true,
+    "allowImportingTsExtensions": true,
+    "erasableSyntaxOnly": true,
+    "verbatimModuleSyntax": true,
+    "strict": true,
+    "noUncheckedIndexedAccess": true,
+    "noPropertyAccessFromIndexSignature": true,
+    "noImplicitOverride": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "allowUnreachableCode": false,
+    "allowUnusedLabels": false
+  }
+}

vite.config.ts

@@ -0,0 +1,18 @@
+import { defineConfig } from "vite-plus";
+
+import projectLint from "./scripts/project-lint.ts";
+
+export default defineConfig({
+  lint: {
+    plugins: ["typescript", "unicorn", "oxc", "import"],
+    jsPlugins: ["./scripts/project-lint.ts"],
+    categories: { correctness: "error", suspicious: "error", pedantic: "error", perf: "error" },
+    rules: projectLint.configs.project.rules,
+    options: {
+      typeAware: true,
+      typeCheck: true,
+      maxWarnings: 0,
+      reportUnusedDisableDirectives: "error",
+    },
+  },
+});