Add PBandGraphOauth scaffold and auth UI

PBandGraphScaffold/README.md

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+# PBandGraph Scaffold (PocketBase + Microsoft Graph OAuth)
+
+Drop-in starter for the PBandGraphOauth pattern:
+- Frontend: PocketBase OAuth with Microsoft provider, shows user display name (top-right), email (bottom-left), version (bottom-right).
+- Backend: Hono + Bun, validates PocketBase `pbToken`, and ready to obtain Graph tokens via client credentials.
+
+## Files
+- `server.ts` — Bun server with `/health` and `/api/submit` example (PocketBase write).
+- `index.html` — Minimal UI for Microsoft login via PocketBase.
+- `.env.example` — Required env vars (copy to `.env`).
+- `package.json`, `tsconfig.json` — Project config.
+
+## Env vars (copy `.env.example` to `.env`)
+- Azure AD: `CLIENT_ID`, `CLIENT_SECRET`, `TENANT_ID`, `REDIRECT_URI`
+- PocketBase: `PB_DB`, `PB_COLLECTION`, `PB_AUTH_COLLECTION`
+- Server: `PORT` (default 5500)
+
+## Run
+```bash
+cd PBandGraphScaffold
+bun install
+bun run dev
+```
+Open http://localhost:5500 and click "Login with Microsoft".
+
+## Notes
+- Graph token helper `getGraphToken()` is in `server.ts`; call it when you add Graph API routes.
+- `/api/submit` currently writes the posted payload to `PB_COLLECTION` after validating `pbToken`; adjust fields as needed.
+- Static file is served from `index.html` in this folder.