Massive Improvements & MVP Patches

AGENTS.md

@@ -111,16 +111,18 @@ Required:
 - `GITEA_TOKEN`
 - `GITEA_BOT_USERNAME`
 - `GITEA_WEBHOOK_SECRET`
-- `OPENAI_API_KEY`
 - `ALLOWED_REPOS`
 - `DB_HOST`, `DB_PORT`, `DB_NAME`, `DB_USER`, `DB_PASSWORD`
 
 Common optional:
 
 - `DATABASE_URL` (overrides DB parts)
+- `OPENAI_API_KEY` (required when `CODEX_AUTH_MODE=api_key`)
 - `OPENAI_PROJECT_ID`, `OPENAI_ORG_ID`
 - `OPENAI_REVIEW_MODEL`
 - `OPENAI_REASONING_EFFORT`
+- `CODEX_AUTH_MODE` (`api_key` default, `chatgpt` supported)
+- `CODEX_AUTH_JSON_PATH` (custom path to `auth.json` for `chatgpt` mode)
 - `WORKDIR`, `MAX_DIFF_BYTES`, `MAX_REVIEW_MINUTES`, `CONCURRENCY`
 - `REVIEW_RUNNER_IMAGE`
 - `ENABLE_FIX_COMMANDS`
@@ -169,4 +171,3 @@ Treat these as high-sensitivity areas when modifying worker/runner paths.
 3. Add/update tests with behavior changes.
 4. Run `pytest`.
 5. Summarize impact, risks, and follow-ups in PR/commit notes.
-