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).

apps/chanora_flutter/ios/chanora_bridge.podspec

@@ -102,6 +102,9 @@ Pod::Spec.new do |s|
       IPHONEOS_DEPLOYMENT_TARGET=16.0 \\
       CMAKE_POLICY_VERSION_MINIMUM=3.5 \\
       CMAKE_OSX_DEPLOYMENT_TARGET=16.0 \\
+      CARGO_PROFILE_RELEASE_DEBUG=true \\
+      CARGO_PROFILE_RELEASE_SPLIT_DEBUGINFO=off \\
+      CARGO_PROFILE_RELEASE_STRIP=false \\
       "$CARGO_BIN" build --release --target aarch64-apple-ios -p chanora_bridge
 
     if [ ! -f "$BRIDGE" ]; then
@@ -231,6 +234,9 @@ PLIST
         IPHONEOS_DEPLOYMENT_TARGET=16.0 \\
         CMAKE_POLICY_VERSION_MINIMUM=3.5 \\
         CMAKE_OSX_DEPLOYMENT_TARGET=16.0 \\
+        CARGO_PROFILE_RELEASE_DEBUG=true \\
+        CARGO_PROFILE_RELEASE_SPLIT_DEBUGINFO=off \\
+        CARGO_PROFILE_RELEASE_STRIP=false \\
         "$CARGO_BIN" build --release --target "$RUST_TARGET" -p chanora_bridge
 
       cd "$REPO_ROOT/apps/chanora_flutter/ios"