fix: 清除硬编码API Key与机器特定路径，改用环境变量+混合式路径解析

orchestrator_db.py

@@ -33,6 +33,11 @@ from runners.gixsql_runner import GixsqlCobolRunner, GixsqlTableData
 
 logger = logging.getLogger(__name__)
 
+# DB 管道 SQLite 存放目录。默认保持短 ASCII 路径：
+# COBOL CONNECT TO 字符串受固定格式第 72 列限制，且 gixpp 无法处理中文路径。
+# 可用环境变量 GIXSQL_DB_DIR 覆盖（见 .env.example）。
+GIXSQL_DB_DIR = Path(os.environ.get("GIXSQL_DB_DIR", "C:/Temp/gix"))
+
 
 def _calc_birth_date(age: int, as_of: str = '20260802') -> str:
     """年龄 → 出生日期 YYYYMMDD（通用）。as_of 为运行时运用日。"""
@@ -103,8 +108,8 @@ class GixsqlOrchestrator:
             compile_flags=config.gixsql_compile_flags,
         )
 
-        # Derive DB path: C:\Temp\gix\<program_id>.db (matches COBOL CONNECT TO, short enough for col 72)
-        self.db_path = Path("C:/Temp/gix") / f"{self.program_id}.db"
+        # Derive DB path: <GIXSQL_DB_DIR>\<program_id>.db (matches COBOL CONNECT TO, short enough for col 72)
+        self.db_path = GIXSQL_DB_DIR / f"{self.program_id}.db"
 
         # Pipeline state
         self.src_path: Optional[Path] = None
@@ -263,7 +268,7 @@ class GixsqlOrchestrator:
 
             # シナリオに応じた DB パス
             if scenario:
-                db_path = Path("C:/Temp/gix") / f"{self.program_id}_{scenario.id}.db"
+                db_path = GIXSQL_DB_DIR / f"{self.program_id}_{scenario.id}.db"
                 self._current_db_path = db_path
             else:
                 db_path = self.db_path