feat: add Claude Code conversation tracker

- Create claude-code-tracker service to monitor and parse Claude Code conversations
- Parse JSONL format with messages, tool calls, and metadata
- Store in SQLite with full-text search support
- Generate daily summaries using Claude API
- Add Conversations UI with search, stats, and conversation browsing
- Integrate with dashboard backend and frontend
- Add sync script for Mac to NAS file transfer

claude-code-tracker/Dockerfile

@@ -0,0 +1,19 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Copy requirements and install dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application code
+COPY *.py ./
+
+# Create data directory
+RUN mkdir -p /app/data
+
+# Run as non-root user
+RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
+USER appuser
+
+CMD ["python", "main.py"]