docs: add hotfix note to v0.2.4 release notes

RELEASE_NOTES.md

@@ -25,6 +25,7 @@ locale pickers) and full mobile-nav parity with the desktop sidebar.
 
 ### Bug Fixes
 
+- **Accept numeric values in settings update payload** — Svelte's `bind:value` on `<input type="number">` coerces to a JS number, and Pydantic v2 wouldn't auto-coerce `int → str`, producing a 422 on every save that touched a numeric setting (TTL, max entries) after the v0.2.4 settings rework. Widened numeric fields to `int | str | None` in `SettingsUpdate` and normalized to `str` before persisting. ([d7d0a5d](https://git.dolgolyov-family.by/alexei.dolgolyov/notify-bridge/commit/d7d0a5d))
 - **`update_settings` TypeError** — `any(await ... for ...)` was an async generator (not an iterator) and raised at runtime; replaced with an explicit loop so settings updates actually commit. ([2be608b](https://git.dolgolyov-family.by/alexei.dolgolyov/notify-bridge/commit/2be608b))
 
 ### Accessibility
@@ -37,6 +38,7 @@ locale pickers) and full mobile-nav parity with the desktop sidebar.
 <details>
 <summary>All Commits</summary>
 
+- [d7d0a5d](https://git.dolgolyov-family.by/alexei.dolgolyov/notify-bridge/commit/d7d0a5d) — fix(settings): accept numeric values in update payload *(alexei.dolgolyov)*
 - [2be608b](https://git.dolgolyov-family.by/alexei.dolgolyov/notify-bridge/commit/2be608b) — feat(cache): thumbhash-validated asset cache + settings UX overhaul *(alexei.dolgolyov)*
 
 </details>