Make bot review setup self-contained

run.ts

@@ -153,19 +153,6 @@ async function configureGitAuthor(): Promise<void> {
   }
 }
 
-// The superpowers plugin gives the agent its skills, including the code review
-// one that the prompt asks for. Both installs are idempotent on the persisted
-// home.
-async function installSuperpowers(bot: string): Promise<void> {
-  const commands = bot === "claude"
-    ? [
-      ["plugin", "marketplace", "add", "obra/superpowers-marketplace"],
-      ["plugin", "install", "-y", "superpowers@superpowers-marketplace"],
-    ]
-    : [["plugin", "add", "superpowers@openai-curated-remote"]];
-  for (const args of commands) await run(bot, args);
-}
-
 async function renderPrompt(): Promise<string> {
   const comments: GiteaComment[] = await (await gitea(
     REVIEWER_TOKEN,
@@ -200,7 +187,6 @@ async function runClaude(prompt: string): Promise<string> {
       "Run `claude setup-token` locally and set the `bot-token` action input.",
     );
   }
-  await installSuperpowers("claude");
   const claude = new Deno.Command("claude", {
     args: [
       "--print",
@@ -265,7 +251,6 @@ async function runCodex(prompt: string): Promise<string> {
   })
     .output();
   if (!loggedIn.success) await codexDeviceLogin();
-  await installSuperpowers("codex");
   const file = await Deno.makeTempFile();
   const status = await new Deno.Command("codex", {
     args: [