add draft_code table for code editor (#369)

Author: yangw-dev

src/migrations/20251106_01_kOjGy-draft-code-editor.py

@@ -0,0 +1,21 @@
+"""
+draft_code_editor
+"""
+
+from yoyo import step
+
+__depends__ = {'20250822_01_UtXzl-website-submission'}
+
+steps = [
+    step("""
+        CREATE TABLE IF NOT EXISTS leaderboard.draft_code (
+            id SERIAL PRIMARY KEY,
+            leaderboard_id INTEGER NOT NULL REFERENCES leaderboard.leaderboard(id) ON DELETE CASCADE,
+            user_id TEXT NOT NULL REFERENCES leaderboard.user_info(id) ON DELETE CASCADE,
+            type TEXT NOT NULL DEFAULT 'general',
+            code BYTEA NOT NULL,
+            created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+            last_modified_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+        );
+    """)
+]