Comprehensive update to MCP server error handling:
Error Handling Improvements:
- Applied MCPErrorFormatter to all remaining MCP tool files
- Replaced all hardcoded timeout values with configurable timeout system
- Converted all simple string errors to structured error format
- Added proper httpx exception handling with detailed context
Tools Updated:
- document_tools.py: All 5 document management tools
- version_tools.py: All 4 version management tools
- feature_tools.py: Project features tool
- project_tools.py: Remaining 3 project tools (get, list, delete)
- task_tools.py: Remaining 4 task tools (get, list, update, delete)
Test Improvements:
- Removed backward compatibility checks from all tests
- Tests now enforce structured error format (dict not string)
- Any string error response is now considered a bug
- All 20 tests passing with new strict validation
This completes the error handling refactor for all MCP tools,
ensuring consistent client experience and better debugging.
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