forked from farhoodlabs/paperclip
Jannes Stubbemann
0d87fd9a11
## Thinking Path > - Paperclip orchestrates AI agents for zero-human companies > - Every deployment serves the same Vite-built UI bundle from the same express app > - Vite emits JS/CSS under `/assets/<name>.<hash>.<ext>` — the hash rolls whenever the content rolls, so these files are inherently immutable > - `index.html` references specific hashed filenames, so it has the opposite lifecycle: whenever we deploy, the file changes but the URL doesn't > - Today the static middleware sends neither with cache headers, and the SPA fallback serves `index.html` for any unmatched route — including paths under `/assets/` that no longer exist after a deploy > - That combination produces the familiar "blank screen after deploy" + `Failed to load module script: Expected a JavaScript MIME type but received 'text/html'` bug > - This pull request caches hashed assets immutably, forces `index.html` to `no-cache` everywhere it gets served, and returns 404 for missing `/assets/*` paths ## What Changed - `server/src/app.ts`: - Serve `/assets/*` with `Cache-Control: public, max-age=31536000, immutable`. - Serve the remaining static files (favicon, manifest, robots.txt) with a 1-hour cache, but override to `no-cache` specifically for `index.html` via the `setHeaders` hook — because `express.static` serves it directly for `/` and `/index.html`. - The SPA fallback (`app.get(/.*/, …)`) sets `Cache-Control: no-cache` on its `index.html` response. - The fallback returns 404 for paths under `/assets/` so browsers don't cache the HTML shell as a JavaScript module. ## Verification - `curl -i http://localhost:3100/assets/index-abc123.js` → `cache-control: public, max-age=31536000, immutable`. - `curl -i http://localhost:3100/` → `cache-control: no-cache`. - `curl -i http://localhost:3100/assets/missing.js` → `404`. - `curl -i http://localhost:3100/some/spa/route` → `200` HTML with `cache-control: no-cache`. ## Risks Low. Asset URLs and HTML content are unchanged; only response headers and the 404 behavior for missing asset paths change. No API surface affected. ## Model Used Claude Opus 4.6 (1M context), extended thinking mode. ## Checklist - [x] Thinking path traces from project context to this change - [x] Model used specified - [x] Tests run locally and pass - [x] CI green - [x] Greptile review addressed