Remote MCP Server support

apps/dbagent/migrations/0009_mcp_server_type_and_url.sql

@@ -0,0 +1,12 @@
+-- Add mcp_server_type enum type if it doesn't exist
+DO $$
+BEGIN
+    IF NOT EXISTS (SELECT 1 FROM pg_type WHERE typname = 'mcp_server_type') THEN
+        CREATE TYPE mcp_server_type AS ENUM ('stdio', 'sse', 'streamable-http');
+    END IF;
+END$$;
+
+-- Add the new columns to the mcp_servers table
+ALTER TABLE mcp_servers
+ADD COLUMN type mcp_server_type DEFAULT 'stdio',
+ADD COLUMN url TEXT;

apps/dbagent/migrations/0009_remote_mcp.sql

@@ -0,0 +1,5 @@
+ALTER TABLE "mcp_servers" DROP CONSTRAINT "uq_mcp_servers_server_name";--> statement-breakpoint
+ALTER TABLE "mcp_servers" ADD COLUMN "config" jsonb NOT NULL;--> statement-breakpoint
+ALTER TABLE "mcp_servers" DROP COLUMN "server_name";--> statement-breakpoint
+ALTER TABLE "mcp_servers" DROP COLUMN "file_path";--> statement-breakpoint
+ALTER TABLE "mcp_servers" DROP COLUMN "env_vars";