Add quick_ideas skill and job for Quick dinners (Feature 18)

quick_ideas v1 suggests Quick dinners of one kind, crockpot or under30,
from the household context, never returning a name already shown: the
exclude list is checked against normalized names with harness.Similar.
POST /api/v1/ideas/quick {kind, exclude[]} validates both fields (no
default kind) and answers 202 {jobId}; the quick_ideas job asks for 12
ideas, grounds them through the same GroundEach rounds as
ideas_from_ingredients and keeps up to 6 whose grounded recipe is of the
kind (crockpot: method crockpot; under30: minutes_total <= 30), so the
model's estimate never decides. Fewer survivors make a shorter page,
never a padded one.

The grounding loop, failure clearing and failed-result view are now
shared generic helpers used by both idea jobs rather than a second copy.

Maestro task 243a6812-f52b-4215-a4a2-8eb599914f7e.

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

cmd/server/main.go

@@ -139,7 +139,7 @@ func run(cfg config.Config, logger *slog.Logger) error {
 		return err
 	}
 
-	ideasSvc, err := ideas.NewService(grounder, ideaFinder(ai, guard), runner, logger)
+	ideasSvc, err := ideas.NewService(db, grounder, ideaFinder(ai, guard), quickIdeaFinder(ai, guard), runner, logger)
 	if err != nil {
 		return err
 	}
@@ -287,7 +287,7 @@ func newJobRunner(db *store.Store, logger *slog.Logger) (*jobs.Runner, *jobKinds
 // starts (dinners.NewService registers dinners.KindGroundDinner and
 // suggest.NewService suggest.KindSuggestionBatch, plan.NewService
 // plan.KindDraftWeek, shopping.NewService shopping.KindTitleSupplyRun,
-// ideas.NewService ideas.KindFromIngredients).
+// ideas.NewService ideas.KindFromIngredients and ideas.KindQuick).
 func registerJobKinds(runner *jobs.Runner) (*jobKinds, error) {
 	builtins, err := jobs.RegisterBuiltins(runner)
 	if err != nil {
@@ -356,6 +356,18 @@ func ideaFinder(ai *aisettings.Service, guard *harness.Guard) ideas.Generator {
 	}
 }
 
+// quickIdeaFinder runs quick_ideas with the AI settings current at each
+// run, sharing guard.
+func quickIdeaFinder(ai *aisettings.Service, guard *harness.Guard) ideas.QuickGenerator {
+	return func(ctx context.Context, scope string, in skills.QuickIdeasRequest) (skills.QuickIdeaList, error) {
+		cfg, err := ai.HarnessConfig(ctx, guard)
+		if err != nil {
+			return skills.QuickIdeaList{}, err
+		}
+		return skills.QuickIdeas(ctx, cfg, scope, in)
+	}
+}
+
 // logListening logs the startup line. Only the public URL's origin is logged
 // so no credential-bearing URL component can reach the log.
 func logListening(logger *slog.Logger, cfg config.Config) {