docs: update TODO and frontend context docs

Replace TODO-css-improvements.md with TODO-release.md. Add EntityPalette
and IconSelect patterns for dynamic entity lists to frontend context.

TODO-release.md

@@ -0,0 +1,20 @@
+# TODO
+
+## IMPORTANT: Remove WLED naming throughout the app
+
+- [ ] Rename all references to "WLED" in user-facing strings, class names, module names, config keys, file paths, and documentation
+- [ ] The app is **LedGrab** — not tied to WLED specifically. WLED is just one of many supported output protocols
+- [ ] Audit: i18n keys, page titles, tray labels, installer text, pyproject.toml description, README, CLAUDE.md, context files, API docs
+- [ ] Rename `wled_controller` package → decide on new package name (e.g. `ledgrab`)
+- [ ] Update import paths, entry points, config references, build scripts, Docker, CI/CD
+- [ ] **Migration required** if renaming storage paths or config keys (see data migration policy in CLAUDE.md)
+
+---
+
+## Donation / Open-Source Banner
+
+- [x] Add a persistent but dismissible banner or notification in the dashboard UI informing users that the project is open-source and under active development, and that donations are highly appreciated
+- [x] Include a link to the donation page (GitHub Sponsors, Ko-fi, or similar — decide on platform)
+- [x] Remember dismissal in localStorage so it doesn't reappear every session
+- [x] Add i18n keys for the banner text (`en.json`, `ru.json`, `zh.json`)
+- [ ] Configure `DONATE_URL` and `REPO_URL` constants in `donation.ts` once platform is chosen