feat(push): add phase7 offline push queue, worker, APIs, and simulator inbox

Backend/drizzle/0010_push_notifications_queue.sql

@@ -0,0 +1,17 @@
+CREATE TABLE "push_notifications" (
+  "id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
+  "owner_user_id" uuid NOT NULL,
+  "recipient_device_id" uuid NOT NULL,
+  "type" varchar(64) NOT NULL,
+  "payload" jsonb DEFAULT 'null'::jsonb,
+  "status" varchar(32) DEFAULT 'queued' NOT NULL,
+  "attempts" integer DEFAULT 0 NOT NULL,
+  "last_error" text,
+  "sent_at" timestamp with time zone,
+  "next_attempt_at" timestamp with time zone DEFAULT now() NOT NULL,
+  "created_at" timestamp with time zone DEFAULT now() NOT NULL,
+  "updated_at" timestamp with time zone DEFAULT now() NOT NULL
+);
+--> statement-breakpoint
+ALTER TABLE "push_notifications" ADD CONSTRAINT "push_notifications_owner_user_id_users_id_fk" FOREIGN KEY ("owner_user_id") REFERENCES "public"."users"("id") ON DELETE no action ON UPDATE no action;--> statement-breakpoint
+ALTER TABLE "push_notifications" ADD CONSTRAINT "push_notifications_recipient_device_id_devices_id_fk" FOREIGN KEY ("recipient_device_id") REFERENCES "public"."devices"("id") ON DELETE no action ON UPDATE no action;

Backend/drizzle/meta/_journal.json

@@ -71,6 +71,13 @@
       "when": 1770416956419,
       "tag": "0009_recordings_pipeline",
       "breakpoints": true
+    },
+    {
+      "idx": 10,
+      "version": "7",
+      "when": 1770417956419,
+      "tag": "0010_push_notifications_queue",
+      "breakpoints": true
     }
   ]
 }