Review fix at e7bc457af8: r1 Opus found initial navigation tracking blocked viewer actions on user-opened tabs while a first load stalled. Limit strong tracking to control.agentId !== null; user tabs retain main's rejection sink. One new public Manager/viewer regression fails before the fix, passes afterward. Capture the last navigation call before releasing the gate; release/join before asserting to avoid a blocked-fiber cleanup deadlock. Two earlier attempts were interrupted while debugging that test cleanup; they are not verification results.

Final counts: original PR added9 -> retained5 (SessionControl1, ServerBrowser4), existingmain60 -> total65. Both focused suites pass, scoped lint/fmt/server typecheck pass. No repo-wide checks.

Real browser proof was recaptured on this head, including user-opened first-response-held -> corrected viewer URL delivered before release. Before/after queued click and late recording cleanup still pass. Detailed notes in VERIFICATION.md.

TESTS.txt and IMPLEMENTATION.txt are prior-run records at 8edce26a56, superseded for final counts/head by this note and LOCAL-HEAD.txt. Full round2 reviews are authoritative for the reviewed final revision.
