add scenarios methods

migrations/20260712154823_create_scenarios_table.sql

@@ -0,0 +1,20 @@
+-- +goose Up
+CREATE TABLE
+    IF NOT EXISTS scenarios (
+        id SERIAL PRIMARY KEY,
+        name VARCHAR(255) NOT NULL UNIQUE,
+        description TEXT,
+        image TEXT,
+        scenario JSONB NOT NULL DEFAULT '{}'::jsonb,
+        author_id INTEGER NOT NULL,
+        status VARCHAR(50) DEFAULT 'draft',
+        updated_at TIMESTAMP NOT NULL DEFAULT NOW (),
+        created_at TIMESTAMP NOT NULL DEFAULT NOW (),
+        published_at TIMESTAMP,
+        is_deleted BOOLEAN DEFAULT FALSE,
+
+        CONSTRAINT fk_scenarios_author FOREIGN KEY (author_id) REFERENCES users (id) ON DELETE RESTRICT
+    );
+
+-- +goose Down
+DROP TABLE IF EXISTS scenarios;