fix(test): preserve unlimited test children and check cache progress

[steipete]

The test runner can kill an unlimited test’s live child when a completed test’s stale deadline fires. Its process-reaping check treats the no-deadline/EPOCH timestamp as expired. Exclude that sentinel, matching the existing entry timeout check, and cover the completed-deadline/live-child sequence with a deterministic regression.

The deferred compile-cache idle test now preserves its ten-second persistence-progress guard and bounds module loading, pipe flushes, child exit, and cleanup individually. The complete 2,000-module workload, late-module handshake, 2,002-file assertion, idle-generation window, and signal-exit budget remain unchanged.

The exact Windows binary from run 37386790583 reproduces the old 30-second aggregate timeout 3/3 under a controlled CPU quota while files keep appearing. An independent driver completes all 2,002 entries in 64.7 seconds; the proposed test passes under that quota in 52.6/52.2 seconds. Deliberately stalled persistence, startup, and exit still fail at their ten-second guards. That hosted failure retained no progress timeline, so its specific runner-level trigger remains unknown. This is distinct from #53’s Linux idle-accounting fix and #130’s Windows execute-access scan fix.

The child-lifetime regression fails 3/3 on old Mac and Windows x64 fork binaries and official upstream Bun 13a98b0d. Exact-source Windows pairs fail 3/3 before and pass 3/3 with the owner fix. Two stale hook-error column expectations were corrected from 15 to 11 after the pre-change fork reproduced all five failures and Node 24 confirmed column 11; exact source-position and error-attribution checks remain intact.

Final validation applies to 29cbbbf595 on main 10b749212a:

• P2 Codex autoreview and the final pre-merge review are scoped-clean.
• Local release build passes, with 25 test-runner tests and 214 module tests passing; all 12 Rust targets pass.
• Native CI: Linux 16/16 and Darwin 13/13, first attempt. Its merge tree exactly matches the reviewed candidate.
• Windows CI: x64 and ARM64 each 31/31, both native smoke jobs and manifest pass on the first attempt. The immutable workflow is separate from runtime source; native revisions, WebKit identity, archive/executable/profile hashes, and PE architectures are verified for this exact source commit.
• OpenClaw consumer tests pass 7 + 22 before and after this exact commit, with the before binary’s tree matching current main and isolated HOME/state/configuration/temp directories.

Format, JavaScript/source lint, Clippy, Miri, and lol-html tests pass. Mordant reports the existing bare_bool_args finding in src/resolver/package_json.rs; its source, baseline, configuration, toolchain, and explicitly advisory workflow setting are unchanged from main. The initial issue-finder run lacked authentication; no credentials or CI settings were changed.

The shared owner fix is also proposed in oven-sh#44613 with a passing upstream-specific build and full test-runner suite. The separate Windows rename fix remains in oven-sh#44601.