Round 3 of adversarial review found that GenerateBridge now holds exactly
ONE run's shared state (_genRunPrefix/_genRunSceneIds/_genAdoptedRun,
window.GenerateBridge's own module-level ranFor/ranForList), but only the
main Generate/Selected/Render buttons are gated against starting a second
one while the first is still queuing/running (actionbar.js's busy(st)). H3
Combo Sweep's "Run sweep" button has no such gate and calls _generateRun
directly -- if clicked while another generation (including one adopted on
reload) is already in flight, it silently overwrote that run's scene
attribution and status message, got refused deeper inside (session.js's own
starting/phase guard), and left the REAL run's eventual result recorded
onto the sweep's scene instead of its own when it finished -- persistent
data corruption, not just a UI glitch -- and could leave _genAdoptedRun
stuck false, reopening round 1's "adopted run's clock never stops" bug.
Fixed at the root: _generateRun itself now checks state.gen.state before
touching any of that shared state, and refuses (loudly, via console.warn)
rather than clobbering it. Fixes every current and future caller in one
place, not just block_sweep.js -- consistent with every other caller
already being a sequential, awaited loop that this guard doesn't affect.
Live-verified: two overlapping Store.generate() calls now produce exactly
one real attempt and one logged refusal, with the first call's status
never overwritten. 691/692 JS tests and 548/548 Python tests pass (the one
JS failure is the pre-existing, unrelated projects.test.js import-race
flake).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
