Show the selected bot profile and add OpenRouter fallback (#18)

Uses Codex first, then Claude, then OpenCode through OpenRouter when quota is exhausted.

Every generated comment and review now identifies the selected profile and model in a final quote. The dependent action interface remains one master key.

Verified formatting, lint, type checks, encrypted profile decryption, current OpenCode CLI flags, and 45 tests.

Reviewed-on: #18
Reviewed-by: bot <noreply@capsulizers.com>
Co-authored-by: Danny Kim <temeddix@gmail.com>
Co-committed-by: Danny Kim <temeddix@gmail.com>

src/profiles.ts

@@ -1,9 +1,22 @@
 export type BotProfile = {
-  type: "claude" | "codex";
+  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)}`;
+}
+
 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));
@@ -75,9 +88,12 @@ export function agentEnvironment(
   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;
+    const tokenName = {
+      claude: "CLAUDE_CODE_OAUTH_TOKEN",
+      codex: "OPENAI_API_KEY",
+      opencode: "OPENROUTER_API_KEY",
+    }[profile.type];
+    result[tokenName] = token;
   }
   return result;
 }