Introduces `get_user_avatar_data` to retrieve a user's avatar as base64 encoded image data, allowing the AI to "see" the profile picture directly. This includes special handling in `process_requested_tools` to attach the image as a `types.Part` in the prompt.
Also adds `get_user_highest_role_color` to fetch the color and details of a user's highest-positioned role.
Update Gurt's prompt to clarify that Ame-chan is not an AI and introduce the KAngel bot. Also, update the Gemini model version to `gemini-2.5-flash-preview-05-20` and remove uptime from server specs.
This commit improves user identification in two key areas:
1. **AI Response Context:**
In `gurt/api.py`, messages processed by the AI now include a more informative author string, combining the user's display name and username (e.g., "DisplayName (Username: actual_username)"). This provides richer context about message authors.
2. **Tool Definitions:**
Descriptions for tools in `gurt/config.py` and `gurt/prompt.py` (e.g., `search_user_messages`, `get_user_facts`) and their parameters have been updated to explicitly state that user identification relies on "User ID". This enhances clarity for the AI model and developers.
Updated the description for `run_terminal_command` to specify it runs in an "empty" Docker sandbox.
Added documentation for the new `execute_internal_command` tool, which executes commands on the host machine.
Implement `/gurtignore` commands to manage channels Gurt should ignore.
- Add `gurtignore add` to add a channel to the ignore list.
- Add `gurtignore remove` to remove a channel from the ignore list.
- Add `gurtignore list` to display currently ignored channels.
- Update `GurtCog` and `config.py` to support ignored channel IDs and file management.
- Ensure ignore commands are owner-only.
- Modify `listeners.py` to prevent Gurt from processing messages in ignored channels.
