docs: standardize skill-template and add development guide

scripts/db/connection.py

@@ -0,0 +1,34 @@
+"""SQLite 连接与日志表迁移模板。"""
+
+from __future__ import annotations
+
+import sqlite3
+
+from util.runtime_paths import get_db_path
+
+
+def get_conn() -> sqlite3.Connection:
+    return sqlite3.connect(get_db_path())
+
+
+def init_db() -> None:
+    conn = get_conn()
+    try:
+        cur = conn.cursor()
+        cur.execute(
+            """
+            CREATE TABLE IF NOT EXISTS publish_logs (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                account_id TEXT NOT NULL,
+                article_id INTEGER NOT NULL,
+                article_title TEXT,
+                status TEXT NOT NULL,
+                error_msg TEXT,
+                created_at INTEGER NOT NULL,
+                updated_at INTEGER NOT NULL
+            )
+            """
+        )
+        conn.commit()
+    finally:
+        conn.close()