chore: import upstream snapshot with attribution

tests/auth_helpers.py

@@ -0,0 +1,21 @@
+"""Shared test helpers for authentication config injection."""
+
+from __future__ import annotations
+
+from specify_cli.authentication.config import AuthConfigEntry
+
+
+def make_github_auth_entry(token_env: str = "GH_TOKEN") -> AuthConfigEntry:
+    """Build a GitHub ``AuthConfigEntry`` for testing."""
+    return AuthConfigEntry(
+        hosts=("github.com", "api.github.com", "raw.githubusercontent.com", "codeload.github.com"),
+        provider="github",
+        auth="bearer",
+        token_env=token_env,
+    )
+
+
+def inject_github_config(monkeypatch, token_env: str = "GH_TOKEN") -> None:
+    """Inject a GitHub auth.json config entry into the auth HTTP module."""
+    from specify_cli.authentication import http as _auth_http
+    monkeypatch.setattr(_auth_http, "_config_override", [make_github_auth_entry(token_env)])