add reasoning block

src/database/sql.ts

@@ -102,11 +102,23 @@ export const migrations: Record<string, SqlMigration> = {
                 "updated_at" timestamp DEFAULT now() NOT NULL
             );
 
+            DO $$
+            BEGIN
+                IF NOT EXISTS (
+                    SELECT 1 FROM information_schema.columns
+                    WHERE table_name = 'messages'
+                    AND column_name = 'reasoning_content'
+                ) THEN
+                    ALTER TABLE "messages" ADD COLUMN "reasoning_content" text;
+                END IF;
+            END $$;
+
             CREATE TABLE IF NOT EXISTS "messages" (
                 "id" uuid PRIMARY KEY NOT NULL,
                 "conversation_id" uuid NOT NULL REFERENCES "conversations"("id") ON DELETE CASCADE,
                 "role" text NOT NULL,
                 "content" text,
+                "reasoning_content" text,
                 "prompt_content" text,
                 "metadata" text,
                 "mentionables" text,