feat(idx) add auto idx

backend/post.sql

@@ -2,13 +2,15 @@ CREATE TABLE IF NOT EXISTS Post
 (
     post_id     UUID PRIMARY KEY,
     title       VARCHAR(255) NOT NULL,
+    summary     TEXT         NOT NULL,
     content     TEXT         NOT NULL,
     last_update TIMESTAMP
 );
 
-INSERT INTO Post (post_id, title, content, last_update)
-VALUES (?1, ?2, ?3, ?4)
+INSERT INTO Post (post_id, title, summary, content, last_update)
+VALUES ($1, $2, $3, $4, $5)
 ON CONFLICT (post_id)
     DO UPDATE SET title       = excluded.title,
+                  summary     = excluded.summary,
                   content     = excluded.content,
                   last_update = excluded.last_update