docs: update README with AGENT_HOURLY env var and ratelimit feature

README.md

@@ -8,6 +8,7 @@ This project is a serverless function (designed for SHSF) that handles Gitea web
 - **State Persistence**: Uses a database to track assignees across events, ensuring "unassigned" events have the necessary context even when the payload is sparse.
 - **AI Integration**: Sends formatted Markdown notifications to an OpenClaw-compatible API.
 - **Assignment & Mention Logic**: Specifically identifies when the configured `AGENT_USERNAME` is involved in an assignment change or mentioned in a comment (e.g., `@youragent`).
+- **Hourly Ratelimits**: Prevents notification spam by limiting the number of alerts sent to OpenClaw per hour (configurable via `AGENT_HOURLY`).
 - **Comment Notifications**: Notifies the agent about new comments on issues or PRs they are assigned to, or when they are tagged.
 
 ## Environment Variables
@@ -21,7 +22,8 @@ The following environment variables are required for the service to function:
 | `OPENCLAW_PROXY_AUTH` | (Optional) Proxy credentials in `username:password` format. |
 | `DATABASE_STORAGE_NAME` | The name of the database storage to use. |
 | `AGENT_USERNAME` | The Gitea username of the AI agent (e.g., `whateveryouragentisnamed`). |
-| `AGENT_PROMPT_FILE` | (Optional) Path to a custom Markdown template for notifications. If not provided, a default template will be used. |
+| `AGENT_HOURLY` | (Optional) The maximum number of notifications per hour (default: 60). |
+| `AGENT_PROMPT_FILE` | (Optional) Path to a custom Markdown template for notifications. |
 
 ## How it works