chore(release): 0.4.9 (versionCode 36) — bundle core + notification fixes (#122)

Supersedes v0.4.8 (still on internal, not promoted) with everything merged
since: offline demo mode + first-run clarity (0.4.8), core session fixes
(#120: queued-message ghosting, selectSession race), and notification/
permission fixes (#121: permission never requested, wrong-session-on-back-nav,
misleading completion pushes, question double-reply). Production is on 0.4.5,
so promoting v0.4.9 gets users the full hardened app in one step.


Claude-Session: https://claude.ai/code/session_01T12AhSnQVrSxNnvwfCx2z6

Co-authored-by: engineer <engineer@macbookpro.lan>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@opencode-ai/mobile",
-  "version": "0.4.8",
+  "version": "0.4.9",
   "private": true,
   "main": "expo-router/entry",
   "scripts": {