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/session.py

@@ -74,6 +74,12 @@ class Session(Base, TimestampMixin):
         cascade="all, delete-orphan",
         order_by="GitOperation.timestamp"
     )
+    tool_calls: Mapped[List["ToolCall"]] = relationship(
+        "ToolCall",
+        back_populates="session",
+        cascade="all, delete-orphan",
+        order_by="ToolCall.timestamp"
+    )
     
     def __repr__(self) -> str:
         return f"<Session(id={self.id}, project_id={self.project_id}, type='{self.session_type}')>"
@@ -111,10 +117,12 @@ class Session(Base, TimestampMixin):
                     (activity.lines_added or 0) + (activity.lines_removed or 0)
                     for activity in self.activities
                 )
+                total_tool_calls = len(self.tool_calls)
                 self.project.update_stats(
                     session_duration_minutes=self.duration_minutes or 0,
                     files_count=unique_files,
-                    lines_count=total_lines
+                    lines_count=total_lines,
+                    tool_calls_count=total_tool_calls
                 )
     
     def add_activity(self) -> None: