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.

tests/test_static.py

@@ -0,0 +1,16 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).parents[1]
+
+
+def test_frontend_assets_exist_and_use_api():
+    html = (ROOT / 'templates/index.html').read_text()
+    script = (ROOT / 'static/app.js').read_text()
+    css = (ROOT / 'static/style.css').read_text()
+    assert '/static/style.css' in html
+    assert '/static/app.js' in html
+    assert "fetch('/api/usage'" in script
+    assert 'entry.id === limit.id' in script
+    assert 'requestAnimationFrame' in script
+    assert 'grid-template-columns' in css