Implement comprehensive API documentation system

✨ Features:
- Comprehensive Pydantic response models with examples
- Enhanced FastAPI configuration with rich OpenAPI metadata
- Centralized error handling with standardized error codes
- Professional Swagger UI styling and branding
- Health check endpoints with detailed component status
- Type-safe request/response models for all endpoints

📊 Coverage:
- Agent Management API fully documented
- Standardized error responses across all endpoints
- Interactive API documentation with try-it-now functionality
- Custom OpenAPI schema with authentication schemes

🛠️ Technical Improvements:
- Created app/models/responses.py with comprehensive models
- Added app/core/error_handlers.py for centralized error handling
- Enhanced app/api/agents.py with detailed documentation
- Custom documentation configuration in app/docs_config.py
- Global exception handlers for consistent error responses

🌐 Access Points:
- Swagger UI: /docs
- ReDoc: /redoc
- OpenAPI JSON: /openapi.json

This establishes professional-grade API documentation that matches
Hive's technical excellence and provides developers with comprehensive,
interactive documentation for efficient integration.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

backend/app/api/projects.py

@@ -1,13 +1,13 @@
 from fastapi import APIRouter, Depends, HTTPException
 from typing import Dict, Any, List
-from app.core.auth import get_current_user
+from ..core.auth_deps import get_current_user_context
 from app.services.project_service import ProjectService
 
 router = APIRouter()
 project_service = ProjectService()
 
 @router.get("/projects")
-async def get_projects(current_user: dict = Depends(get_current_user)) -> List[Dict[str, Any]]:
+async def get_projects(current_user: Dict[str, Any] = Depends(get_current_user_context)) -> List[Dict[str, Any]]:
     """Get all projects from the local filesystem."""
     try:
         return project_service.get_all_projects()
@@ -15,7 +15,7 @@ async def get_projects(current_user: dict = Depends(get_current_user)) -> List[D
         raise HTTPException(status_code=500, detail=str(e))
 
 @router.get("/projects/{project_id}")
-async def get_project(project_id: str, current_user: dict = Depends(get_current_user)) -> Dict[str, Any]:
+async def get_project(project_id: str, current_user: Dict[str, Any] = Depends(get_current_user_context)) -> Dict[str, Any]:
     """Get a specific project by ID."""
     try:
         project = project_service.get_project_by_id(project_id)
@@ -26,7 +26,7 @@ async def get_project(project_id: str, current_user: dict = Depends(get_current_
         raise HTTPException(status_code=500, detail=str(e))
 
 @router.get("/projects/{project_id}/metrics")
-async def get_project_metrics(project_id: str, current_user: dict = Depends(get_current_user)) -> Dict[str, Any]:
+async def get_project_metrics(project_id: str, current_user: Dict[str, Any] = Depends(get_current_user_context)) -> Dict[str, Any]:
     """Get detailed metrics for a project."""
     try:
         metrics = project_service.get_project_metrics(project_id)
@@ -37,7 +37,7 @@ async def get_project_metrics(project_id: str, current_user: dict = Depends(get_
         raise HTTPException(status_code=500, detail=str(e))
 
 @router.get("/projects/{project_id}/tasks")
-async def get_project_tasks(project_id: str, current_user: dict = Depends(get_current_user)) -> List[Dict[str, Any]]:
+async def get_project_tasks(project_id: str, current_user: Dict[str, Any] = Depends(get_current_user_context)) -> List[Dict[str, Any]]:
     """Get tasks for a project (from GitHub issues and TODOS.md)."""
     try:
         return project_service.get_project_tasks(project_id)