refactor: remove local fs, add config class to common pacakge

runtime/src/runtime/mount.py

@@ -7,15 +7,16 @@ the directory usable; downstream consumers (e.g. process.py) import it.
 
 from __future__ import annotations
 
-import os
 import subprocess
 import time
 from pathlib import Path
 
 from loguru import logger
 
-WORKSPACES_ROOT = Path(os.getenv("WORKSPACES_ROOT", "/app/workspaces"))
-REMOTE_BUCKET = os.getenv("REMOTE_BUCKET", "rustfs:workspaces")
+from common.config import settings
+
+WORKSPACES_ROOT = Path(settings.workspaces_root)
+REMOTE_BUCKET = settings.remote_bucket
 
 RCLONE_PROCESS: subprocess.Popen | None = None
 

runtime/src/runtime/process.py

@@ -9,7 +9,6 @@ a thin wrapper over ``start_workspace``.
 from __future__ import annotations
 
 import asyncio
-import os
 import secrets
 import subprocess
 import time
@@ -18,10 +17,11 @@ from typing import TypedDict
 from fastapi import HTTPException
 from loguru import logger
 
+from common.config import settings
 from common.utils import get_free_port, start_process
 from runtime.mount import WORKSPACES_ROOT
 
-PUBLIC_BASE_URL = os.getenv("PUBLIC_BASE_URL", "http://localhost")
+PUBLIC_BASE_URL = settings.public_base_url
 
 
 class JupyterProcessRecord(TypedDict):