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/macos/chanora_bridge.podspec

@@ -57,6 +57,9 @@ Pod::Spec.new do |s|
       CMAKE_POLICY_VERSION_MINIMUM=3.5 \\
       LIBOPUS_STATIC=1 \\
       LIBOPUS_NO_PKG=1 \\
+      CARGO_PROFILE_RELEASE_DEBUG=true \\
+      CARGO_PROFILE_RELEASE_SPLIT_DEBUGINFO=off \\
+      CARGO_PROFILE_RELEASE_STRIP=false \\
       cargo build --release --target aarch64-apple-darwin -p chanora_bridge
 
     echo "[chanora_bridge.podspec] cargo build x86_64-apple-darwin"
@@ -65,6 +68,9 @@ Pod::Spec.new do |s|
       CMAKE_POLICY_VERSION_MINIMUM=3.5 \\
       LIBOPUS_STATIC=1 \\
       LIBOPUS_NO_PKG=1 \\
+      CARGO_PROFILE_RELEASE_DEBUG=true \\
+      CARGO_PROFILE_RELEASE_SPLIT_DEBUGINFO=off \\
+      CARGO_PROFILE_RELEASE_STRIP=false \\
       cargo build --release --target x86_64-apple-darwin -p chanora_bridge
 
     if [ ! -f "$BRIDGE_ARM64" ]; then
@@ -158,6 +164,9 @@ PLIST
         CMAKE_POLICY_VERSION_MINIMUM=3.5 \
         LIBOPUS_STATIC=1 \
         LIBOPUS_NO_PKG=1 \
+        CARGO_PROFILE_RELEASE_DEBUG=true \
+        CARGO_PROFILE_RELEASE_SPLIT_DEBUGINFO=off \
+        CARGO_PROFILE_RELEASE_STRIP=false \
         cargo build --release --target aarch64-apple-darwin -p chanora_bridge
 
       echo "[chanora_bridge script_phase] cargo build x86_64-apple-darwin"
@@ -166,6 +175,9 @@ PLIST
         CMAKE_POLICY_VERSION_MINIMUM=3.5 \
         LIBOPUS_STATIC=1 \
         LIBOPUS_NO_PKG=1 \
+        CARGO_PROFILE_RELEASE_DEBUG=true \
+        CARGO_PROFILE_RELEASE_SPLIT_DEBUGINFO=off \
+        CARGO_PROFILE_RELEASE_STRIP=false \
         cargo build --release --target x86_64-apple-darwin -p chanora_bridge
 
       cd "$REPO_ROOT/apps/chanora_flutter/macos"