Two follow-ups to the per-space-seeds refactor:
1. Transitional check in `seedWorkbenchHomeOn`: if a Space already
carries an uncustomised "Home" row under a legacy random uuid (a
D-soft dedup survivor from before the deterministic-id contract
landed), defer to it instead of inserting a parallel
`seed-home-${spaceId}` row. Avoids an unnecessary
create-then-soft-delete roundtrip via the +layout dedup pass and
the sync churn that would follow. Schicht D-hard will rename
surviving rows to the deterministic id and this branch can go away.
2. `wiring.test.ts` — integration test for the full chain
(registry → workbench-home seeder → Dexie). Drives the same
`runSpaceSeeds` entry point that `setActiveSpace` calls in
production, so the test fails if any seam in the wiring breaks.
Includes the rapid back-and-forth Space-switch scenario that the
original bug ran into; with the deterministic id + get-then-add
guard, 5×2 activations produce exactly 2 rows.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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