feat: publish shared task and reply activities through MCP

drizzle/0006_cheerful_siren.sql

@@ -0,0 +1,21 @@
+CREATE TABLE `activities` (
+	`id` text PRIMARY KEY NOT NULL,
+	`proposal` text NOT NULL,
+	`user_state` text NOT NULL,
+	`user_overrides` text NOT NULL,
+	`created_at` integer NOT NULL,
+	`updated_at` integer NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE `activity_receipts` (
+	`request_id` text PRIMARY KEY NOT NULL,
+	`input_hash` text NOT NULL,
+	`result` text NOT NULL
+);
+--> statement-breakpoint
+CREATE TABLE `activity_revision` (
+	`id` integer PRIMARY KEY NOT NULL,
+	`revision` integer NOT NULL,
+	CONSTRAINT "activity_revision_singleton" CHECK("activity_revision"."id" = 1),
+	CONSTRAINT "activity_revision_nonnegative" CHECK("activity_revision"."revision" >= 0)
+);