3 new gate-tier test files closing the most important coverage gaps in
the brain-aware planning layer:
test/schema-version-migration.test.ts (D4 A4):
- Cache file with mismatched schema_version triggers wipe-and-rebuild
- Matching version + fresh TTL stays warm-hit (no unnecessary rebuild)
- Rebuild wipes ALL files in scope, not just the one being read
test/takes-fence-fallback.test.ts:
- Every preflight skill mentions both takes_add (preferred) and
put_page fence-block (fallback for pre-T8 gbrain versions)
- All 5 skills gate on BRAIN_CALIBRATION_WRITEBACK flag + personal
trust policy
- Per-skill weight matches SKILL_CALIBRATION_WEIGHTS (E5)
- Write-back emits the kind=bet frontmatter shape and invalidates
affected cache digests
test/skill-preflight-budget.test.ts (T21 / D7):
- Per-skill BRAIN_* instruction bytes stay under 3x the runtime
digest budget (resolver bloat catch)
- Autoplan total instruction bytes stay under 75 KB (3x of 25 KB
runtime cap)
- Non-preflight skills emit zero brain bytes
- Per-skill subset references are present in the preflight bash
Note on the 3x multiplier: SKILL_PREFLIGHT_BUDGET_BYTES governs runtime
digest data (enforced by cache CLI truncateToBudget). Instruction text
emitted by the resolver gets a separate 3x headroom — anything beyond
that signals the instructions themselves are bloated and need a trim.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Garry Tan