Roll up qa-tools-fkst-staging into qa-tools

[chronoai-fkst]

Summary

Rolls qa-tools-fkst-staging into qa-tools at immutable integration head 5a29093247b4d29a16499fe0576ec9d84ee9c6ec (16 ahead commits).

• Makes non-testing browse and computer_use Task claims linearizable with claim identity, generation, version, and lease-expiry CAS fencing.
• Adds atomic, claim-keyed machine capacity reservations and profile ownership while preserving accounting across token rotation and concurrent reserve/release operations.
• Adds durable, bounded, restart-safe claim recovery and reconciliation for standalone MongoDB, including indexed expiry-maintenance pages.
• Prevents stale workers, reconciliation, or generation-N operations from mutating reclaimed generation N+1 state.
• Verifies machine/profile projections before returning leases and preserves original queue priority during expiry-driven requeue.
• Adds three-attempt CAS retries for authorized user input, handoff, cancellation, and interactive close, with side effects ordered after successful mutation.
• Adds deterministic Memory/Mongo race, recovery, projection, lease-expiry, capacity, profile-ownership, and authorized-mutation coverage.
• Narrows Mongo machine lease mutation typing and restores the FKST-compatible lowercase test check name.

Verification

Reported verification includes build, typecheck, lint, worker bundle, fixture generation with no drift, 370 unit tests across 53 files, 80 Mongo contract tests, testing-contract demos, runtime image builds, runtime surface checks, and control-plane health smoke.

Scope

This rollup does not implement #29, #27, #23, or #24 and does not change Testing Tool/QARun, providers, deployment, or external authority contracts.

中文摘要

将 qa-tools-fkst-staging 的 16 个提交合入 qa-tools，固定集成头为 5a29093247b4d29a16499fe0576ec9d84ee9c6ec。本次更新强化任务认领、租约续期、机器容量及 Profile 所有权的原子性与代际隔离，加入有界且可重启恢复的 MongoDB 对账流程、并发竞态测试、授权用户操作重试，同时修复 Mongo 类型约束并恢复小写 test 检查名。范围不包含 #29、#27、#23 或 #24。
⟦AI:FKST⟧

[chronoai-fkst]

github-devloop-integration rollup observe sample

status=clean
reason=clean
head_sha=5a29093247b4d29a16499fe0576ec9d84ee9c6ec
first_clean_observed_at_ms=1788868694600
sampled_at_ms=1788868694600

[YueZh127]

Superseded without merge: Issue #34 requires a separate human-controlled Draft integration PR after the reviewed FKST staging merge. This FKST App-created PR was opened as Ready, so it is intentionally closed and will be replaced by a Draft PR with the immutable review and CI evidence. No source branch is deleted.