- cloud/merge_gate.py: pure gate; directory check reuses the v0.3
git diff --name-only merge-base command; protection modes
record (default, explicit confirm required when unprotected),
enforce (always blocks when unprotected), off (explicit only).
Confirm covers protection risk only, never directory violations.
Protection status is caller/env-declared only; unknown is a
recorded risk, not a claim of protection.
- server POST /tasks/{id}/merge: applies the gate only when gate
evidence is supplied (or env declares protection); no-evidence
calls behave as before plus a merge_gate field in the response.
Blocked merges return 409 without changing status; confirmed
unprotected merges write a merge_gate_risk audit entry.
- skill_seed.py: whole-directory seeding evaluated and rejected
(cannot preserve tenant deletions; no benefit while the pack
holds only SKILL.md); SKILL.md-only behaviour unchanged.
- software-engineering SKILL.md: gate paragraph added to the body
and to the coordinator + client appendix sections (v0.2 text on
this base; port to v0.3 text on rebase after #199 merges).
- tests: 16 new tests covering gate modes, directory reuse,
body/appendix bidirectional assertions naming the missing side,
SKILL.md-only seeding and tenant-edit preservation.
