Massive Improvements & MVP Patches

.env.example

@@ -8,11 +8,20 @@ GITEA_BOT_USERNAME=codex-bot
 # Shared secret configured on the Gitea webhook.
 GITEA_WEBHOOK_SECRET=replace
 
-# OpenAI API credentials for Codex review generation.
+# OpenAI API credentials for API-key mode (required when CODEX_AUTH_MODE=api_key).
 OPENAI_API_KEY=replace
 OPENAI_PROJECT_ID=
 OPENAI_ORG_ID=
 
+# Codex runner auth mode:
+# - api_key: use OPENAI_API_KEY inside the review container.
+# - chatgpt: mount auth.json into the container and use ChatGPT-managed auth.
+CODEX_AUTH_MODE=api_key
+
+# Optional custom host path for auth.json when CODEX_AUTH_MODE=chatgpt.
+# Defaults to ~/.codex/auth.json when unset.
+CODEX_AUTH_JSON_PATH=
+
 # Comma-separated allowlist of repositories this bot may process.
 # Example: space/gitea-codex,space/another-repo
 ALLOWED_REPOS=space/gitea-codex