The stable-control runtime ADR (docs/architecture/mcp-stable-control-runtime-policy-adr.md)
established the policy but had no runtime enforcement: a daemon relaunched from a
feature worktree still holds production credentials and will happily mutate real
issues. This adds the enforcement layer (acceptance criteria 6-11).
stable_control_runtime.py:
- classify_runtime_mode(): stable-control | dev-test | unknown, inferred from the
process root and checkout branch, with an explicit GITEA_MCP_RUNTIME_MODE
declaration for packaged layouts that have no git checkout.
- build_runtime_report(): runtime mode, git SHA, branch, checkout path, process
root, active workspace, repo binding, profile, identity, dirty files,
alignment, and real_mutations_allowed.
- assess_runtime_mutation_gate(): fails closed on dev-test targeting production,
unknown runtime, dirty stable checkout, dev-worktree launch, and unsafe
process-root/workspace alignment.
- Post-transport-flap re-proving tracked per namespace, so proving the author
namespace never implies reviewer, merger, or reconciler (#584).
- assess_promotion_record(): promotion must record previous and promoted SHAs
plus health, identity, profile, workspace, capability, and rollback proof.
Server wiring:
- _profile_operation_gate() consults the runtime gate alongside the #420 parity
gate. gitea.read is never blocked, so an operator can still diagnose a sick
runtime.
- The gate reads a startup snapshot rather than shelling out per mutation, for
the same reason parity uses a startup baseline: the runtime a process serves
from is fixed when it loads its code. Enforcement is decided from how the
process was loaded, so per-test production simulation cannot switch it on.
- gitea_get_runtime_context() reports the live runtime under
stable_control_runtime and points at the promotion runbook when blocked.
Docs and tooling:
- docs/stable-runtime-promotion-runbook.md: operator promotion procedure,
required record fields, per-namespace re-proving, rollback.
- scripts/promote-stable-runtime: read-only helper that emits and validates a
promotion record; it never restarts anything.
- Five canonical [THREAD STATE LEDGER] examples: runtime healthy, transport flap
recovered, namespace not yet re-proven, promotion completed, rollback required.
- ADR section 5 follow-ups marked landed; runbooks cross-link the new runbook.
Validation: 47 new tests in tests/test_stable_control_runtime.py. Full suite
3827 passed / 6 skipped / 2 failed; both failures are pre-existing on master
059ee77 (verified in a clean baseline worktree: identical 2 failures,
3780 passed).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
sysadminandClaude Opus 4.8
jcwalker3andsysadmin