Live fusion instances running on a shared HOME write to tasks/, messages/,
memory-insights.md, test-cache.json, HEARTBEAT.md, kb.db.backup-*, and
fusion.db.pre-* snapshots; none were in the runtime ignore list, so the
script flagged them as test-driven mutations and failed merge build
verification. Recursion in collectFusionSignature only filters via top-level
matches, so adding these top-level patterns short-circuits descent into
live-app dirs.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>