Update pricing UX, billing flows, and API rules

dewemoji-extension-notes.md

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+# Dewemoji Extension Notes / To-Do
+
+## Context (Why paused)
+- GCM token registration appears blocked or flaky in unpacked mode.
+- Diagnostics show: token missing + "Asynchronous operation is pending".
+- Likely need Web Store (unlisted) install to validate GCM/FCM end-to-end.
+
+---
+
+## Priority A — GCM / Token
+- Verify GCM/FCM token registration in a Web Store (unlisted) install.
+- Confirm sender/project ID consistency across manifest + backend.
+- Add dev-mode fallback token for local testing (unpacked).
+- Add clear UI guidance when token missing (ex: “Unpacked builds may not support GCM”).
+- Add retry + backoff messaging for token refresh.
+
+## Priority B — Diagnostics
+- Keep diagnostics visible in settings (done).
+- Add “Force token refresh” with timeout (done).
+- Add copy-to-clipboard for diagnostics output.
+- Show last error + timestamp (done).
+- Add quick “Open service worker console” helper link (optional).
+
+## Priority C — License & Pro
+- Verify license activation/deactivation flow with real API.
+- Implement `/license/deactivate` endpoint and wire client.
+- Add graceful handling for license server downtime.
+- Confirm Pro actions (insert/auto) are blocked for free users.
+
+## Priority D — Insert / Auto
+- Validate content script injection across common sites.
+- Improve detection when no editable element exists.
+- Add clearer user feedback when insert fails.
+
+## Priority E — Search / Performance
+- Confirm caching + paging behavior is correct.
+- Ensure auto-load sentinel doesn’t duplicate results.
+- Test daily usage cap flow (free users).
+
+## Priority F — Tone UX
+- Validate tone lock + preferred tone across sessions.
+- Confirm policy list coverage vs Unicode updates.
+- Accessibility checks for tone picker controls.
+
+## Priority G — UI / UX Polish
+- Improve keyboard navigation in settings.
+- Add tooltips for Pro features + diagnostics.
+- Ensure error banners are theme-consistent.
+
+## Priority H — Release / Packaging
+- Create unlisted Web Store listing for real-world testing.
+- Document packaging flow + PEM usage for stable extension ID.
+- Add release checklist (build, test, upload, verify).
+
+## Priority I — Security / Privacy
+- Verify minimum permissions in `manifest.json`.
+- Document local vs sync data storage.
+
+---
+
+## Notes / Observations
+- Unpacked installs often can’t obtain GCM tokens.
+- CRX install is blocked by Chrome unless via Web Store.
+