feat(engine,daemon): content-addressed blob store with attachment records and GC

apps/daemon/drizzle/0014_elite_mister_fear.sql

@@ -0,0 +1,41 @@
+CREATE TABLE `attachment_blobs` (
+	`attachment_id` text NOT NULL,
+	`variant` text NOT NULL,
+	`blob_id` text NOT NULL,
+	PRIMARY KEY(`attachment_id`, `variant`),
+	FOREIGN KEY (`attachment_id`) REFERENCES `attachments`(`attachment_id`) ON UPDATE no action ON DELETE cascade,
+	FOREIGN KEY (`blob_id`) REFERENCES `blobs`(`blob_id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+CREATE INDEX `attachment_blobs_blob_idx` ON `attachment_blobs` (`blob_id`);--> statement-breakpoint
+CREATE TABLE `attachments` (
+	`attachment_id` text PRIMARY KEY NOT NULL,
+	`kind` text NOT NULL,
+	`name` text NOT NULL,
+	`mime_type` text NOT NULL,
+	`size_bytes` integer NOT NULL,
+	`metadata_json` text NOT NULL,
+	`created_at` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE `blobs` (
+	`blob_id` text PRIMARY KEY NOT NULL,
+	`size_bytes` integer NOT NULL,
+	`created_at` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE `upload_leases` (
+	`upload_id` text PRIMARY KEY NOT NULL,
+	`declared_sha256` text NOT NULL,
+	`declared_size` integer NOT NULL,
+	`name` text NOT NULL,
+	`mime_type` text,
+	`kind` text NOT NULL,
+	`blob_id` text,
+	`attachment_id` text,
+	`expires_at` integer NOT NULL,
+	`created_at` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE INDEX `upload_leases_expires_at_idx` ON `upload_leases` (`expires_at`);--> statement-breakpoint
+ALTER TABLE `session_resources` ADD `attachment_id` text;