Release skill-template v1.0.99: table registry contract and drop_deprecated_user_table

tests/samples/test_table_deprecation_migration.py.sample

@@ -0,0 +1,66 @@
+# -*- coding: utf-8 -*-
+"""旧库废弃表迁移样例（复制到 tests/ 并按技能改写）。
+
+验收：给定旧库含废弃物理表 + 元数据 + 历史行 → init_db() 后表与元数据均清除。
+见 references/SCHEMA.md「表增删改与退役」。
+"""
+from __future__ import annotations
+
+import unittest
+
+from _support import IsolatedDataRoot
+
+
+class TestTableDeprecationMigration(unittest.TestCase):
+  def test_init_db_drops_legacy_task_logs(self) -> None:
+    with IsolatedDataRoot():
+      from db.connection import get_conn, init_db
+      from db.display_metadata import iter_user_tables
+
+      # 1) 模拟升级前的旧库
+      init_db()
+      conn = get_conn()
+      try:
+        cur = conn.cursor()
+        cur.execute(
+          """
+          CREATE TABLE task_logs (
+            id INTEGER PRIMARY KEY,
+            task_type TEXT,
+            status TEXT
+          )
+          """
+        )
+        cur.execute(
+          """
+          INSERT INTO _jiangchang_tables
+          (table_name, display_name, visible, readonly)
+          VALUES ('task_logs', '任务日志', 1, 0)
+          """
+        )
+        cur.execute("INSERT INTO task_logs (task_type, status) VALUES ('run', 'ok')")
+        conn.commit()
+      finally:
+        conn.close()
+
+      # 2) 新代码 init_db() 应幂等清除（在 connection.init_db 中调用 drop_deprecated_user_table）
+      init_db()
+
+      conn = get_conn()
+      try:
+        cur = conn.cursor()
+        cur.execute(
+          "SELECT 1 FROM sqlite_master WHERE type='table' AND name='task_logs'"
+        )
+        self.assertIsNone(cur.fetchone())
+        cur.execute(
+          "SELECT COUNT(*) FROM _jiangchang_tables WHERE table_name='task_logs'"
+        )
+        self.assertEqual(int(cur.fetchone()[0]), 0)
+        self.assertNotIn("task_logs", list(iter_user_tables(cur)))
+      finally:
+        conn.close()
+
+
+if __name__ == "__main__":
+  unittest.main()