chore(ddev): ddev tests now also runs npm run build

So the public/build/ bundle that ships in the next deploy always matches
the source the tests just verified. Without it, the previous "Remove
this frame" feature shipped source-correct but compiled-stale, and the
button never appeared on the deployed PWA.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.ddev/commands/web/tests

@@ -16,3 +16,10 @@ echo "── Frontend typecheck + tests ─────────────
 cd frontend
 npx vue-tsc --noEmit -p tsconfig.app.json
 npx vitest run
+
+echo
+echo "── Frontend production build ──────────────────────────"
+# Rebuild public/build/ so what gets committed matches what passed tests.
+# Without this step, deploys can ship source-correct features whose
+# compiled bundle is stale (verified failure mode 2026-05-09).
+npm run build