DEVX-182: feat(molecule): log lease owner and UTC expiry on emission

docs/specs/DEVX-182.md

@@ -0,0 +1,49 @@
+# DEVX-182: feat(molecule): release lease emission (ships DEVX-181)
+
+- Task: DEVX-182
+- Status: draft
+
+## Problem
+
+DEVX-181 landed on master but was never released: the squash subject
+came out `DEVX-181: ci: retrigger validation` because the branch's last
+commit was an empty `ci:` retrigger. git-cliff found no bump-worthy
+commit, so `v0.55.5` is still latest and the S08 lease producer is
+unshipped. A `feat:` merge is needed to cut the release — and while
+shipping, the emission log line is upgraded from a bare count to the
+actual lease owner and UTC expiry, which is what an operator needs when
+debugging a cleanup race.
+
+## Approach
+
+REQ-1: `start_docker.main()` computes `lease_env()` once and logs
+`owner=` + ISO-8601 `until=` alongside the export confirmation. The
+single call also removes a latent second-boundary inconsistency where
+`emit_github_env` and the count message each re-derived `now`.
+
+REQ-2: Merge squash commit carries `feat(molecule):` so git-cliff cuts
+the next minor release containing DEVX-181's emitter and this change.
+
+## Test Plan
+
+- Update `test_emits_lease_on_success` + `test_prints_and_exports` for
+  the new log format; keep 100 % coverage.
+- `make pre-push` — full devx suite green.
+- Post-merge: verify a `v*` tag > v0.55.5 exists and
+  `pip index versions devx` (Gitea PyPI) lists it.
+
+## Deploy Plan
+
+- Auto-merge; post-merge release job tags + publishes.
+- Infra (OBL-INFRA-658) and GRM (GRM-174) consume the new pin.
+
+## Rollback Plan
+
+- Revert merge; the unreleased module remains dormant regardless.
+
+## Acceptance Criteria
+
+- [x] REQ-1: emission log includes owner and ISO-8601 expiry; lease env
+  computed once — covered by updated unit tests.
+- [x] REQ-2: merge commit uses `feat(molecule):` so the release job
+  cuts a version bump.

src/devx/molecule/start_docker.py

@@ -31,11 +31,12 @@ import subprocess  # nosec B404
 import sys
 import tempfile
 import time
+from datetime import UTC, datetime
 
 import click
 
 from devx.i18n import _
-from devx.molecule.lease import emit_github_env, lease_env
+from devx.molecule.lease import LEASE_UNTIL_ENV, OWNER_ENV, emit_github_env, lease_env
 
 DEFAULT_TIMEOUT = 30
 DOCKER_SOCK = "/var/run/docker.sock"
@@ -388,8 +389,12 @@ def main(timeout: int) -> None:
         # Implements: REQ-2 (DEVX-181) — emit the S08 producer lease env so
         # molecule-created objects carry org.oblachno.lease-until/owner
         # labels that runner-cleanup.sh honors.
-        if emit_github_env(lease_env()):
-            click.echo(f"Exported {len(lease_env())} lease vars to GITHUB_ENV")
+        # Implements: REQ-1 (DEVX-182) — one lease_env() call; log the
+        # owner and UTC expiry an operator needs for cleanup debugging.
+        env = lease_env()
+        if emit_github_env(env):
+            until = datetime.fromtimestamp(int(env[LEASE_UNTIL_ENV]), tz=UTC).strftime("%Y-%m-%dT%H:%M:%SZ")
+            click.echo(f"Exported lease vars to GITHUB_ENV (owner={env[OWNER_ENV]}, until={until})")
         sys.exit(0)
     sys.exit(1)
 

tests/unit/test_molecule_lease.py

@@ -118,4 +118,6 @@ class TestStartDockerIntegration:
         ):
             result = runner.invoke(start_docker_main, ["--timeout", "1"])
         assert result.exit_code == 0
-        assert "Exported 2 lease vars" in result.output
+        assert "Exported lease vars to GITHUB_ENV" in result.output
+        assert "owner=run-7-job" in result.output
+        assert "until=" in result.output