Reapply "test(i18n): trigger CI with test translation key"

This reverts commit 228dc7d005.

.github/workflows/translate-i18n-claude.yml

@@ -5,6 +5,11 @@ on:
     branches: [main]
     paths:
       - 'web/i18n/en-US/*.json'
+  pull_request:
+    branches: [main]
+    paths:
+      - '.github/workflows/translate-i18n-claude.yml'
+      - 'web/i18n/en-US/*.json'
   workflow_dispatch:
     inputs:
       files:

web/i18n/en-US/app.json

@@ -1,4 +1,5 @@
 {
+  "_test_ci_trigger": "This is a test key for CI trigger - will be reverted",
   "accessControl": "Web App Access Control",
   "accessControlDialog.accessItems.anyone": "Anyone with the link",
   "accessControlDialog.accessItems.external": "Authenticated external users",