feat(gateway): automation rule engine and reminder scheduler

- engine: 5-field cron parser (*/n, ranges, lists) firing at most once
  per minute; device-state triggers with edge detection; manual trigger
  via POST /automation/rules/:id/trigger; actions run through the AI
  pipeline so rules can call any tool (IoT control, search, ...)
- reminders: due-scan scheduler delivering via WebSocket broadcast,
  optional LLM-polished reminder text with plain-title fallback;
  Reminder gains Done flag with ListDue/MarkDone
- tests: cron matching and validation, once-per-minute dedup, device
  edge triggering, manual trigger, reminder delivery

backend/cmd/cyrene/main.go

@@ -43,6 +43,7 @@ import (
 	"git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/persona"
 	"git.yeij.top/AskaEth/Cyrene_v2/services/ai-core/subsession"
 	"git.yeij.top/AskaEth/Cyrene_v2/services/gateway/api"
+	"git.yeij.top/AskaEth/Cyrene_v2/services/gateway/engine"
 	"git.yeij.top/AskaEth/Cyrene_v2/services/gateway/store"
 	"git.yeij.top/AskaEth/Cyrene_v2/services/gateway/ws"
 	"git.yeij.top/AskaEth/Cyrene_v2/services/memory"
@@ -306,6 +307,35 @@ func main() {
 		}
 	}()
 
+	// === 12.7 Automation engine ===
+	autoEngine := engine.New(
+		automationSourceAdapter{gwDeps.Automation},
+		func(ctx context.Context, sessionID, userID, message string) {
+			tokenCh, _, err := orch.ProcessInput(ctx, sessionID, userID, message)
+			if err != nil {
+				logger.Infof("[automation] action failed: %v", err)
+				return
+			}
+			for range tokenCh {
+			}
+		},
+		iotQuerierAdapter{reg},
+		30*time.Second,
+	)
+	autoEngine.Start(context.Background())
+	gwDeps.AutomationEng = autoEngine
+
+	// === 12.8 Reminder scheduler ===
+	remSched := engine.NewReminderScheduler(
+		gwDeps.Reminders,
+		func(userID, title, body string) {
+			wsHub.Broadcast(map[string]any{"type": "reminder", "title": title, "content": body})
+		},
+		&memory.LLMAdapterBridge{Adapter: llmSelector.DefaultAdapter()},
+		30*time.Second,
+	)
+	remSched.Start(context.Background())
+
 	apiRouter := api.New(gwDeps)
 
 	wsMux := http.NewServeMux()
@@ -394,6 +424,32 @@ func (a *perfAdapter) History() []map[string]any {
 	return result
 }
 
+// automationSourceAdapter adapts api.AutomationStore to engine.RuleSource.
+type automationSourceAdapter struct{ s *api.AutomationStore }
+
+func (a automationSourceAdapter) List() []engine.Rule {
+	rules := a.s.List()
+	out := make([]engine.Rule, len(rules))
+	for i, r := range rules {
+		out[i] = engine.Rule{
+			ID: r.ID, Name: r.Name, Trigger: r.Trigger,
+			Condition: r.Condition, Action: r.Action, Enabled: r.Enabled,
+		}
+	}
+	return out
+}
+
+// iotQuerierAdapter adapts the plugin registry to engine.DeviceQuerier.
+type iotQuerierAdapter struct{ reg *plugin.Registry }
+
+func (a iotQuerierAdapter) ListDevices(ctx context.Context) ([]plugin.Device, error) {
+	iot := a.reg.GetIoTProvider()
+	if iot == nil {
+		return nil, fmt.Errorf("no iot provider")
+	}
+	return iot.ListDevices(ctx)
+}
+
 // chatPersisterAdapter adapts store.ChatStore to aiCoreCtx.Persister.
 type chatPersisterAdapter struct{ s *store.ChatStore }