chore: initial scaffold

Vite + Vue 3 + DaisyUI SPA (project picker + Slack avatar member grid) with a
TypeScript/Node (Hono) backend proxying Napta + Slack, SQLite avatar cache via
node:sqlite, and docker-compose for Coolify deploy.

backend/.env.example

@@ -0,0 +1,16 @@
+# Backend configuration. Copy to .env for local dev (gitignored), or set these
+# as environment variables on the Coolify app for production.
+
+PORT=8000
+
+# Napta API — required for live data. Without it, the API serves demo fixtures.
+# Base URL + token: see https://app.napta.io (Settings → API).
+NAPTA_API_TOKEN=
+NAPTA_BASE_URL=https://app.napta.io/api/v1
+
+# Slack bot token (xoxb-...) with scopes: users:read, users:read.email
+# Used to resolve each person's profile picture by email.
+SLACK_BOT_TOKEN=
+
+# SQLite location (avatar cache). Matches the Coolify persistent volume.
+DB_PATH=data/app.db