Added 3 new repair patterns to handle additional hallucinated formats:

1. Pattern -1: Fix <tool_call> wrapper format
   - Converts <tool_call><list_files></list_files> to proper <tool> wrapper
   - Handles nested <tool_call><tool>...</tool></tool_call> format

2. Pattern -2: Handle wrong wrapper tags
   - Fixes when model uses tool name as wrapper: <fetch_instructions>...</fetch_instructions>
   - Converts to proper JSON format: {"name": "tool_name", "arguments": {...}}
   - Supports all known tools (read_file, list_files, etc.)

3. Pattern -3: Handle incomplete tool calls with missing parameters
   - Detects <tool><list_files></list_files> (no parameters)
   - Provides sensible defaults: list_files gets path='.' and recursive=False
   - Prevents extraction failures due to missing required parameters

These patterns fix the hallucination issues observed in debug.log where the model
produces broken XML formats despite --ggg (grammar-guided generation) being enabled.