fix(ios,macos): address PR #26 review findings

- ios/Runner.xcodeproj/project.pbxproj: Update RunnerTests TEST_HOST
  paths from Runner.app/Runner to Chanora.app/Chanora (target was
  renamed in prior commit but test config still pointed at old paths,
  breaking xcodebuild test).
- Cargo.toml: Move release DWARF flags from workspace [profile.release]
  into Apple-only podspec CARGO_PROFILE_RELEASE_* env vars so Android,
  Linux, Windows release builds stay lean (~10MB DWARF avoided).
- ios/Runner/Info.plist + macos/Runner/Info.plist: Flip
  ITSAppUsesNonExemptEncryption from false to true (Chanora ships
  ChaCha20-Poly1305 local storage + tsclientlib ECDH/AES-EAX voice
  channel encryption, not exempt under Apple export-compliance rules).
- scripts/verify_silero_exports.sh: Make slice-aware via lipo -archs
  loop + per-arch nm -arch invocation so universal macOS builds
  verify every architecture slice, not just whichever slice nm picks.
- .gitignore: Drop .omo/ and .playwright-mcp/ entries (scope leak;
  unrelated tooling state, not part of PR #26 archive-symbol concern).

.gitignore

@@ -136,6 +136,3 @@ Screenshot 2026-05-17 at 22.23.07.png
 # macOS release zip bundles produced by local release scripts
 /chanora-v*.zip
 
-# Local agent / tooling state
-.omo/
-.playwright-mcp/