Add browser Python editor with Pyodide, user auth, and workspace API

- FastAPI serves static UI, file CRUD under code/ and read-only lib/
- Pyodide worker runs Python and Jedi completions in the browser
- SQLite accounts: login/register, session cookies, superuser user management
- Optional EDITOR_API_KEY, AUTH_* env vars, .env.example
- Pipenv, pytest, Selenium smoke test, README

Made-with: Cursor

src/editor_app/config.py

@@ -0,0 +1,30 @@
+import os
+from pathlib import Path
+
+
+# Application package lives under `src/`; repo root is one level up (for `.env`, default workspace).
+BASE_DIR = Path(__file__).resolve().parent.parent
+PROJECT_ROOT = BASE_DIR.parent
+STATIC_DIR = BASE_DIR / "static"
+
+
+def load_env_file(env_path: Path) -> None:
+    """Load KEY=VALUE entries from a local .env file (does not override existing os.environ)."""
+    if not env_path.exists():
+        return
+
+    for line in env_path.read_text(encoding="utf-8").splitlines():
+        stripped = line.strip()
+        if not stripped or stripped.startswith("#") or "=" not in stripped:
+            continue
+        key, value = stripped.split("=", 1)
+        key = key.strip()
+        value = value.strip().strip('"').strip("'")
+        if key and key not in os.environ:
+            os.environ[key] = value
+
+
+load_env_file(PROJECT_ROOT / ".env")
+
+_default_workspace = PROJECT_ROOT / "workspace"
+WORKSPACE_ROOT = Path(os.environ.get("WORKSPACE_ROOT", str(_default_workspace))).resolve()