KI-AGENT: Mobile Push Registrierung anbinden

backend/db/migrations/0048_mobile_push_devices.sql

@@ -0,0 +1,19 @@
+CREATE TABLE "notification_mobile_push_devices" (
+	"id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+	"tenant_id" bigint NOT NULL,
+	"user_id" uuid NOT NULL,
+	"local_device_id" text NOT NULL,
+	"central_device_id" text NOT NULL,
+	"platform" text NOT NULL,
+	"provider_token_preview" text,
+	"device_label" text,
+	"meta" jsonb,
+	"created_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"last_seen_at" timestamp with time zone DEFAULT now() NOT NULL,
+	"disabled_at" timestamp with time zone
+);
+--> statement-breakpoint
+ALTER TABLE "notification_mobile_push_devices" ADD CONSTRAINT "notification_mobile_push_devices_tenant_id_tenants_id_fk" FOREIGN KEY ("tenant_id") REFERENCES "public"."tenants"("id") ON DELETE cascade ON UPDATE cascade;--> statement-breakpoint
+ALTER TABLE "notification_mobile_push_devices" ADD CONSTRAINT "notification_mobile_push_devices_user_id_auth_users_id_fk" FOREIGN KEY ("user_id") REFERENCES "public"."auth_users"("id") ON DELETE cascade ON UPDATE cascade;--> statement-breakpoint
+CREATE UNIQUE INDEX "notification_mobile_push_devices_user_device_key" ON "notification_mobile_push_devices" USING btree ("tenant_id","user_id","local_device_id");--> statement-breakpoint
+CREATE UNIQUE INDEX "notification_mobile_push_devices_central_device_key" ON "notification_mobile_push_devices" USING btree ("central_device_id");