Add comprehensive documentation system and tool call tracking

## Documentation System
- Create complete documentation hub at /dashboard/docs with:
  - Getting Started guide with quick setup and troubleshooting
  - Hook Setup Guide with platform-specific configurations
  - API Reference with all endpoints and examples
  - FAQ with searchable questions and categories
- Add responsive design with interactive features
- Update navigation in base template

## Tool Call Tracking
- Add ToolCall model for tracking Claude Code tool usage
- Create /api/tool-calls endpoints for recording and analytics
- Add tool_call hook type with auto-session detection
- Include tool calls in project statistics and recalculation
- Track tool names, parameters, execution time, and success rates

## Project Enhancements
- Add project timeline and statistics pages (fix 404 errors)
- Create recalculation script for fixing zero statistics
- Update project stats to include tool call counts
- Enhance session model with tool call relationships

## Infrastructure
- Switch from requirements.txt to pyproject.toml/uv.lock
- Add data import functionality for claude.json files
- Update database connection to include all new models
- Add comprehensive API documentation

🤖 Generated with [Claude Code](https://claude.ai/code)

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

app/models/tool_call.py

@@ -0,0 +1,33 @@
+"""
+Tool call tracking model for Claude Code sessions.
+"""
+
+from datetime import datetime
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey, Boolean
+from sqlalchemy.orm import relationship
+
+from app.models.base import Base
+
+
+class ToolCall(Base):
+    """
+    Tracks individual tool calls made during Claude Code sessions.
+    
+    This helps analyze which tools are used most frequently and their success rates.
+    """
+    __tablename__ = "tool_calls"
+
+    id = Column(Integer, primary_key=True, index=True)
+    session_id = Column(String, ForeignKey("sessions.id"), nullable=False, index=True)
+    tool_name = Column(String(100), nullable=False, index=True)
+    parameters = Column(Text, nullable=True)  # JSON string of tool parameters
+    result_status = Column(String(20), nullable=True, index=True)  # success, error, timeout
+    error_message = Column(Text, nullable=True)
+    execution_time_ms = Column(Integer, nullable=True)  # Tool execution time in milliseconds
+    timestamp = Column(DateTime, nullable=False, default=datetime.utcnow, index=True)
+    
+    # Relationships
+    session = relationship("Session", back_populates="tool_calls")
+
+    def __repr__(self):
+        return f"<ToolCall(id={self.id}, tool={self.tool_name}, session={self.session_id})>"