✨ feat: add auto table creation and per-PK sync verification

- Add new Access table mappings for transmitter contracts (25/26年变送器) and tube bending workshop (弯管车间烘洗)
- Add auto-create target table from Access schema when table does not exist (db_utils + init_full_sync)
- Implement per-primary-key verification in incremental sync: verify deletes are gone and inserts are present before marking Synced=1
- Add post-commit re-verification with Synced rollback on failure for automatic retry
- Batch IN clause parameters to stay under SQL Server limit
- Adjust poll interval from 5s to 30s
- Improve IDENTITY_INSERT cleanup in finally blocks

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

init_full_sync.py

@@ -140,9 +140,18 @@ def run_full_sync():
                     log_info( f"  检测到 {len(columns)} 个列")
                     insert_sql = db_utils.generate_insert_sql(target_schema, target_table, columns)
 
-                    # 3. TRUNCATE 目标表
-                    sql_cursor.execute(f"TRUNCATE TABLE {full_target_name}")
-                    log_info( f"  已清空目标表")
+                    # 3. 检查目标表是否存在，不存在则自动创建
+                    if not db_utils.table_exists(sql_cursor, target_schema, target_table):
+                        db_utils.ensure_schema(sql_cursor, target_schema)
+                        db_utils.create_table_from_access(
+                            sql_cursor, target_schema, target_table,
+                            acc_cursor.description, target_config['pk_col']
+                        )
+                        sql_conn.commit()  # DDL 必须单独提交，否则 pyodbc 参数绑定无法获取正确的列元数据
+                        log_info( f"  目标表不存在，已自动创建")
+                    else:
+                        sql_cursor.execute(f"TRUNCATE TABLE {full_target_name}")
+                        log_info( f"  已清空目标表")
                     
                     # 4. 检查并启用 IDENTITY_INSERT
                     has_identity = has_identity_column(sql_cursor, target_schema, target_table)