[atyrode]

Problem

Follow-ups from the last review round of #276:

• A held review pinned the panel's own read of OMP's defaults, which is event-backed and can be older than the press's fresh readDefaults; a press whose review both differed and read newer defaults ended on Launch with nothing said.
• The browser verifier's Agent Run press no longer waited for Code's Agents read, and its exact door order could not absorb a retried busy registerAgentV2; two checks were weaker than their descriptions.
• One gate run of Launch is one press: no Review step, and a busy agent plugin no longer fails the launch #276 failed at "the machine list opens" on a freshly opened workspace: chooseMachine pressed the picker while it still read "no machine", whose word changes width once the panel picks a machine.

Change

• heldCurrent no longer pins the OMP defaults revision; launching a held review still refuses moved defaults (reviewedComposition), and the hold is then dropped. Docs updated.
• Verifier: waits for a successful core.access.listAgentsV2 answer (with no Agents or terminal read in flight) before the Agent Run press; collapses adjacent repeats of the three profile-validating doors when comparing the door order; re-checks that the narrowed check stop reviews nothing after the launch settles; asserts the held stop names "GPT accounts join the pool"; chooseMachine waits until the panel has picked a machine before pressing the picker.

Evidence

• scripts/gate.sh at 2094807413: exit 0 (tsc, 452 unit tests, pack, consumer, hardened and packaged verification, browser PASS (483s), native).
• Independent review at 2094807413: pass.

Closes #277

[atyrode]

Independent review at 2094807413750967ebb60d1a66339b37982caa54: pass. CI at this head: agent-policy, plugins / verify and test pass. Local scripts/gate.sh at this head: exit 0.