chore: initial project setup with AI usage dashboard for Codex and Devin

Add FastAPI-based monitoring dashboard with support for Codex CLI and Devin API v3 Enterprise consumption tracking. Includes Docker deployment, systemd service configuration, kiosk mode launcher, comprehensive documentation, and demo mode for testing without credentials.

Dockerfile

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+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 PYTHONUNBUFFERED=1
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+COPY app app
+COPY templates templates
+COPY static static
+COPY .env.example .env.example
+RUN useradd --create-home --uid 10001 appuser && chown -R appuser:appuser /app
+USER appuser
+EXPOSE 8080
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8080/health')"
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8080"]