v1.3.0+133 Chanawoo

Chanawoo v1.3.0+133

Fixes arm64 APK instant crash on launch.

Fixes

• arm64 crash on open — a corrupted Flutter engine JAR in the Gradle cache produced a broken libflutter.so (~66MB APK). arm64 builds are back to ~30MB with a valid engine library.
• Build hardening: serial Gradle workers + fallback if arm64 libflutter.so is bad again.

Still in this release line

• awoo.cf image upload fix (v1.3.0+132) — needs meguca server update on awoo.cf.

Use app-arm64-v8a-release.apk on modern phones. Do not install the v1.3.0+132 arm64 build if it is ~66MB.