Replace the Go backend with the Rust workspace and route Android/iOS through
UniFFI bindings. Include the migrated extension runtime, network, providers,
media metadata, downloads and library operations, with version 5.0.0+147.
Remove Go sources, adapters, native build selection and CI dependencies.
Build Rust unconditionally and lock the iOS Rust pod using a relative path.
Retain legacy source and migration evidence in a local ignored archive.
Validation: Android Kotlin compile and 53 native tests; Swift Rust-branch
equivalence and syntax; CocoaPods install; workflow, shell, Ruby, plist and
diff checks. Reuse the preceding 100 Rust tests, fmt/Clippy and five-ABI
build checkpoint; no new APK or iOS application build for this cleanup.
Known follow-up: URL/URLSearchParams globals are missing from the Rust JS
runtime. A controlled extension replay confirms a URL-resolution regression;
this commit does not fix that runtime gap.
Trim after removing inline timestamps before matching speaker prefixes in Dart. Run one 21-case usability corpus through Dart, Go, and Kotlin tests.
Document the shared fixture and trigger Dart and Go CI when its resources change.
CI (every push/PR):
- pub-cache cached keyed on pubspec.lock
- dorny/paths-filter skips the Flutter job for Go-only changes and
vice versa (skipped required checks count as passing)
Release:
- gomobile installed from the go.mod-pinned x/mobile version instead
of @latest (reproducible, covered by the setup-go cache; verified
locally that go.sum already satisfies cmd/gomobile)
- Android bind targets arm/arm64/amd64 only - 386 dropped, amd64 kept
so the universal APK still runs on x86_64 emulators
- NDK r29 cached; docker prune dropped from the free-space step
- Flutter pinned to 3.41.5 (matches .fvmrc/ci.yml) in both build jobs
plus pub-cache caching; xcodeproj gem installed only when missing
go get -u across the backend: goja 2026-07-01, golang.org/x/* latest,
brotli 1.2.2, klauspost/compress 1.19. Toolchain stays on go1.25.9;
CI and docs now pin 1.25.9 explicitly.