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fix(app): snapshot the session before spawning background goroutines - #4230
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Start, reEmitStartupInfo and RunSkillFork read a.session from inside the goroutines they spawn, which races with ReplaceSession writing the field from the bubbletea loop. The race detector caught it about one run in five in TestLoadSessionThenClickEditLabel, failing the test-race CI job. Read the field on the caller's goroutine and hand the value to the background work, as Run already does; ReplaceSession re-emits startup info for the new session itself. Adds a regression test that covers all three entry points and fails deterministically under -race without the fix. Fixes #4229
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docker-agent 1.138.1 Created-by: HarmonybrewBot Commit-by: HarmonybrewBot Merged-by: HarmonybrewBot Description: Created by `brew bump` --- Created with `brew bump-formula-pr`.<details> <summary>release notes</summary> <pre>This release adds kubectl and AWS CLI to sandbox templates, introduces secure HTTP relay packages and improved share signing, fixes session and race condition bugs, and includes several CI pipeline improvements. ## What's New - Adds `kubectl` and AWS CLI to the `sbx-templates` image, making them available in sandboxes without manual installation - Adds secure HTTP relay packages (`pkg/config/httprelay` and `pkg/modelsgateway/relay`) for agent configuration fetching and model-API forwarding - Changes `share push --key` to sign a DSSE-wrapped in-toto statement instead of raw YAML bytes, adding metadata about where and when the artifact was published ## Bug Fixes - Fixes the starred flag being silently dropped when forking a starred session (the `AddSession` insert omitted the `starred` column) - Fixes a production data race in `App` where `ReplaceSession` wrote `a.session` from the update loop while background goroutines started by `App.Start` read it concurrently - Fixes a data race in evaluation tests where container stderr was read without going through `exec.Cmd` - Fixes HCL examples not being decoded through the HCL loader during the live models check in `TestExamplesAgainstLiveModelsDev` ## Technical Changes - Consolidates CI workflows: single gate job, merged image job, shared composite actions, merged docs workflows, shared module/build caches, and checksum-verified tools - Adds race detector job (`go test -race -shuffle=on`) on pushes to `main` - Skips Go CI jobs on docs-only PRs and skips redundant lint/license checks on main push (already verified in merge queue) - Stops sidebar tests from reading the checkout's git branch to avoid environment-dependent failures in CI - Tears down bubbletea programs in `t.Cleanup` and freezes animation clock in exact-frame TUI tests to eliminate test flakiness - Stops parallel tests from mutating `version.Version` to prevent race conditions --- ## What's Changed * docs: update CHANGELOG.md for v1.138.0 by @docker-read-write[bot] in docker/docker-agent#4226 * fix(session): preserve the starred flag in AddSession by @kitadesign in docker/docker-agent#4182 * ci: single gate, merged image job, shared composite actions, docs workflow merge by @aheritier in docker/docker-agent#4221 * test(tui): stop sidebar tests from reading the checkout's git branch by @aheritier in docker/docker-agent#4231 * ci: fix the failures in the new test-race job by @aheritier in docker/docker-agent#4228 * fix(app): snapshot the session before spawning background goroutines by @aheritier in docker/docker-agent#4230 * docs: auto-update for merged PRs (2026-09-11) by @aheritier in docker/docker-agent#4234 * feat: add secure HTTP relay packages by @dgageot in docker/docker-agent#4235 * fix(test): load HCL examples in live models check by @aheritier in docker/docker-agent#4236 * ci: skip redundant main push checks by @aheritier in docker/docker-agent#4237 * feat(sandbox): add kubectl and aws cli to sbx-templates image by @maxcleme in docker/docker-agent#4218 * feat(share): sign a DSSE-wrapped in-toto statement, not just the YAML bytes by @gtardif in docker/docker-agent#4238 ## New Contributors * @kitadesign made their first contribution in docker/docker-agent#4182 **Full Changelog**: docker/docker-agent@v1.138.0...v1.138.1 </pre> <p>View the full release notes at <a href="https://github.com/docker/docker-agent/releases/tag/v1.138.1">https://github.com/docker/docker-agent/releases/tag/v1.138.1</a>.</p> </details> <hr> See merge request: Harmonybrew/homebrew-core!19945
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Fixes #4229.
Why
go test -race -shuffle=on ./pkg/tui(thetest-racejob from #4221) still fails about one run in five onTestLoadSessionThenClickEditLabelafter #4228. The race detector points atpkg/app:App.ReplaceSessionwritesa.sessionfrom the bubbletea update loop while the goroutine started byApp.Startreads it to callEmitStartupInfo.reEmitStartupInfoandRunSkillForkhanda.sessionto their goroutines the same way. This is a production race, not a test artifact.What
Start,reEmitStartupInfoandRunSkillForknow reada.sessionon the caller's goroutine and pass the value to the background work, the wayRun/RunWithMessagealready do.ReplaceSessionre-emits startup info for the new session itself, so emitting for the snapshotted session is the intended behavior.TestAppBackgroundWorkSnapshotsSessionBeforeReplacedrives each of the three entry points, callsReplaceSessionright after, and asserts both sessions reach the runtime. Without the fix it fails deterministically under-race(7 race reports across the three subtests).Verification
go test -race -count=3 ./pkg/app: clean.go test -race -count=10 -run TestLoadSessionThenClickEditLabel ./pkg/tui: clean (was ~1 in 5 failing).task lintpasses.Independent of #4228; the two together make
test-racegreen.