Title Supply runs in a job, scoped by their dinner names

archive_title's single-flight scope was <weekStart>@<plan revision>, but
renaming a planned dinner changes the names to title without changing
the plan revision, so two overlapping generations across a rename could
share one model result. The scope is now
<weekStart>@<plan revision>/<sha256 of the ordered dinner names>, the
same list the skill is given, through the harness's own guard.

Push to Calendar and POST /shopping/{weekStart}/generate also waited
for the title call. Generation now enqueues a title_supply_run job
(service-only, in the generation's transaction) for a list still
untitled and returns without waiting; the list reads untitled until the
job stores its title. A failed title still leaves the list untitled, is
logged, recorded in ai_runs, fails the job title_failed, and is retried
by the week's next generation. A titled list enqueues no job.

Maestro task fa4b94c9-6623-41ab-8d2a-0ca7d1e6401a.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/server/plans_test.go

@@ -37,6 +37,7 @@ type plansEnv struct {
 	h        http.Handler
 	st       *store.Store
 	svc      *plan.Service
+	runner   *jobs.Runner
 	questLog string
 	// google is the fake Google the plan service pushes to; it starts
 	// unconnected.
@@ -47,6 +48,13 @@ type plansEnv struct {
 }
 
 func newPlansRouter(t *testing.T) plansEnv {
+	t.Helper()
+	return newPlansRouterTitled(t, untitled)
+}
+
+// newPlansRouterTitled is newPlansRouter whose Supply runs are titled by
+// title.
+func newPlansRouterTitled(t *testing.T, title shopping.Titler) plansEnv {
 	t.Helper()
 	st := newTestStore(t)
 	ctx := t.Context()
@@ -80,7 +88,7 @@ func newPlansRouter(t *testing.T) plansEnv {
 	if err != nil {
 		t.Fatal(err)
 	}
-	shop, err := shopping.NewService(st, untitled, logger)
+	shop, err := shopping.NewService(st, title, runner, logger)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -119,7 +127,7 @@ func newPlansRouter(t *testing.T) plansEnv {
 			t.Fatal(err)
 		}
 	}
-	return plansEnv{h: h, st: st, svc: svc, questLog: dinner("Pad Thai", "quest_log", "stovetop", 35),
+	return plansEnv{h: h, st: st, svc: svc, runner: runner, questLog: dinner("Pad Thai", "quest_log", "stovetop", 35),
 		google: google, gcal: googleSvc, logs: logs}
 }