Initial commit: StackPilot Phase 1 (Core)

Self-hosted Docker Compose manager.
- Backend: FastAPI + docker-py + SQLite (JWT auth, file-first stacks,
  lifecycle, live status, WebSocket logs, docker-run converter, audit log)
- Frontend: React + Vite + Tailwind (login/setup, dashboard, stacks,
  stack detail, Monaco editor, dark/light theme)
- Deployment: docker-compose.yml, Dockerfiles, nginx reverse proxy

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/tailwind.config.ts

@@ -0,0 +1,16 @@
+import type { Config } from "tailwindcss";
+
+export default {
+  darkMode: "class",
+  content: ["./index.html", "./src/**/*.{ts,tsx}"],
+  theme: {
+    extend: {
+      colors: {
+        bg: { DEFAULT: "#f8fafc", dark: "#0f172a" },
+        card: { DEFAULT: "#ffffff", dark: "#1e293b" },
+        accent: { DEFAULT: "#0284c7", dark: "#38bdf8" },
+      },
+    },
+  },
+  plugins: [],
+} satisfies Config;