[feat]. Add username and custom bot mention tags

README.md

@@ -6,7 +6,7 @@ Webhook-driven PR review bot for Gitea.
 
 - Handles `issue_comment` and `pull_request_comment` events.
 - Verifies `X-Gitea-Signature` HMAC (`sha256`).
-- Triggers on `@codex review`, `@codex rerun`, `@codex explain`, `@codex fix`, `@codex ignore`.
+- Triggers on `@codex ...`, `@<GITEA_BOT_USERNAME> ...`, plus optional custom aliases from `GITEA_BOT_MENTIONS`.
 - Ignores bot-authored comments.
 - Enforces strict repository allowlist (`ALLOWED_REPOS`).
 - Deduplicates webhook deliveries/comments in DB.
@@ -54,6 +54,7 @@ Optional:
 - `OPENAI_API_KEY` (required when `CODEX_AUTH_MODE=api_key`, optional when `CODEX_AUTH_MODE=chatgpt`)
 - `OPENAI_PROJECT_ID`
 - `OPENAI_ORG_ID`
+- `GITEA_BOT_MENTIONS` (comma-separated extra mention aliases, e.g. `@review-buddy,helper-bot`)
 - `CODEX_AUTH_MODE` (`api_key` default, or `chatgpt`)
 - `CODEX_AUTH_JSON_PATH` (custom host path to `auth.json`; defaults to `~/.codex/auth.json` in `chatgpt` mode)
 - `DATABASE_URL` (overrides composed DB URL)
@@ -95,4 +96,4 @@ This project was made WITH codex and is meant to be used WITH codex as a review
 If you are as rich as Peter Steinberg and get a free OpenAI API Key, feel free to use it for this bot.
 
 ## Contributing
-Contributions are welcome! Please open issues or submit pull requests for bug fixes, improvements, or new features.
+Contributions are welcome! Please open issues or submit pull requests for bug fixes, improvements, or new features.