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## Problem Mobile pushes and PRs are slow. - **Pre-push takes ~133s on a mobile-only change.** About 115s of that is `flutter test`, and the finish time is set by a few files that wait on real clocks. - `push_presentation_export_test` (75s) and `push_presentation_recovery_test` (19s) sleep through the full 7.75s retry backoff. - `channel_messages_provider_test` (70s) sleeps through recount and ownership retry backoff on real time. - **The required Mobile CI job takes ~15–16 min.** It runs tests (390–430s on a 4-vCPU runner, 2 test files at a time) and then the Android debug APK build (~400s, no Gradle cache) back to back. - **Mobile Swift takes 18–21 min.** The unsigned release build (~4.5 min) waits behind the simulator tests. Pre-commit is ~3s and isn't part of the problem. ## Change **Tests** (each one still asserts what it did before) - **Push exports.** Production retries wait through `debugPushPresentationRetryWait`, which defaults to `Future.delayed`. The export and recovery tests skip the real waits and assert the exact 250ms → 4s backoff schedule instead. Export fixtures sign each event once per file. - **`channel_messages_provider_test`.** Every test runs on `fakeAsync`. A file-local `test` wrapper keeps the 90 call sites unchanged. Timers fire in their real order, and a test that waits on work outside fake time fails instead of hanging. Raising the production retry bound (`attempt < 2` → `3`) still fails the 5 exhausted-retry tests. - **`signed qualified caller`.** This test mounts the page 48 times and opens the profile sheet twice per mount. It now disables the sheet animation; it asserts which pubkey and labels show, not motion. **CI** - **Mobile runs as five parallel matrix lanes:** checks (format, analyze, unconfigured push test, recipe test), three `flutter test --total-shards=3` shards, and the Android build. The required `Mobile` gate still reads the combined result. - **Android restores a Gradle cache,** which is saved only on pushes to `main`. - **Mobile Swift builds the unsigned release** in a parallel lane beside the native build, tests and simulator checks. ## Validation Measured locally on an 18-core Mac with warm caches: | | Before | After | |---|---|---| | `flutter test` (full suite) | 115s | 74s | | Summed per-test time | 411s | 307s | | `push_presentation_export_test` | 75s | 38s | | `channel_messages_provider_test` | 70s | 22s | | Pre-push, mobile-only push | 133s | 95s | - The CI lane timings come from this PR's own run. - `actionlint` passes, and so do `scripts/test-ci-required-context-isolation.sh` and `scripts/ci-required-gates.test.mjs`. - The pre-push hook (format, analyze, full `flutter test`) passed on push. ## Not in this PR - `channel_detail_page_test` (~55s) is now the local long pole. Splitting it into shard files would let it run in parallel, but it is one 16k-line library with `part` files, so that is a separate refactor. - Caching Hermit and pub on macOS would cut ~100s of setup from each Mobile Swift lane. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Signed-off-by: Wes <wesbillman@users.noreply.github.com> Co-authored-by: Carl <32a2e2c9d428ee08902cab75d956da2c1d235a22d4766b0dd4138bf6e2e5db1d@buzz.block.builderlab.xyz> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>