Tibsfox 67aeb049c2 fix(state): invalidate disk scan cache in writeStateMd (#1967) ...

Add _diskScanCache.delete(cwd) at the start of writeStateMd before
buildStateFrontmatter is called. This prevents stale reads if multiple
state-mutating operations occur within the same Node process — the
write may create new PLAN/SUMMARY files that the next frontmatter
computation must see.

Matters for:
- SDK callers that require() gsd-tools.cjs as a module
- Future dispatcher extensions handling compound operations
- Tests that import state.cjs directly

Adds tests/bug-1967-cache-invalidation.test.cjs which exercises two
sequential writes in the same process with a new phase directory
created between them, asserting the second write sees the new disk
state (total_phases: 2, completed_phases: 1) instead of the cached
pre-write snapshot (total_phases: 1, completed_phases: 0).

Review feedback on #2054 from @trek-e.

2026-04-11 03:35:00 -07:00

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