Click to edit UI (#385)

- [x] add e2e test - happy case (make sure it clears selection and next
prompt is empty, and preview is cleared); de-selection case
- [x] shim - old & new file
- [x] upgrade path
- [x] add docs
- [x] add try-catch to parser script
- [x] make it work for next.js
- [x] extract npm package
- [x] make sure plugin doesn't apply in prod

src/preload.ts

@@ -79,6 +79,8 @@ const validInvokeChannels = [
   "get-user-budget",
   "get-context-paths",
   "set-context-paths",
+  "get-app-upgrades",
+  "execute-app-upgrade",
   // Test-only channels
   // These should ALWAYS be guarded with IS_TEST_BUILD in the main process.
   // We can't detect with IS_TEST_BUILD in the preload script because