fix(auth): align Codex OAuth persistence paths (#37517)

* fix(desktop): codex OAuth onboarding now resolves on fresh install

The desktop codex device-code worker persisted tokens with a hand-rolled
pool.add_entry(), writing only credential_pool.openai-codex. It never set
active_provider, so on a fresh install the onboarding setup.runtime_check
resolved provider "auto", couldn't detect the Codex OAuth session, and raised
"No inference provider configured" — while setup.status (which sniffs the pool)
reported configured. The disagreement surfaced as the onboarding banner
"Connected, but Hermes still cannot resolve a usable provider."

Use the canonical _save_codex_tokens() instead, matching the CLI's
`hermes auth add openai-codex` path and the Nous/MiniMax dashboard workers.
It writes the providers.openai-codex singleton (setting active_provider) and
syncs the pool.

* fix(auth): align Codex OAuth persistence paths

Ensure desktop and CLI Codex OAuth logins both write the canonical provider state so fresh installs resolve a usable runtime provider.

---------

Co-authored-by: teknium1 <127238744+teknium1@users.noreply.github.com>

tests/hermes_cli/test_auth_commands.py

@@ -303,9 +303,11 @@ def test_auth_add_codex_oauth_persists_pool_entry(tmp_path, monkeypatch):
 
     payload = json.loads((tmp_path / "hermes" / "auth.json").read_text())
     entries = payload["credential_pool"]["openai-codex"]
-    entry = next(item for item in entries if item["source"] == "manual:device_code")
+    entry = next(item for item in entries if item["source"] == "device_code")
+    assert payload["active_provider"] == "openai-codex"
+    assert payload["providers"]["openai-codex"]["tokens"]["access_token"] == token
     assert entry["label"] == "codex@example.com"
-    assert entry["source"] == "manual:device_code"
+    assert entry["source"] == "device_code"
     assert entry["refresh_token"] == "refresh-token"
     assert entry["base_url"] == "https://chatgpt.com/backend-api/codex"
 
@@ -1129,10 +1131,6 @@ def test_auth_remove_codex_manual_source_suppresses_reseed(tmp_path, monkeypatch
 def test_auth_add_codex_clears_suppression_marker(tmp_path, monkeypatch):
     """Re-linking codex via `hermes auth add openai-codex` must clear any suppression marker."""
     monkeypatch.setenv("HERMES_HOME", str(tmp_path / "hermes"))
-    monkeypatch.setattr(
-        "agent.credential_pool._seed_from_singletons",
-        lambda provider, entries: (False, set()),
-    )
     hermes_home = tmp_path / "hermes"
     hermes_home.mkdir(parents=True, exist_ok=True)
 
@@ -1171,7 +1169,8 @@ def test_auth_add_codex_clears_suppression_marker(tmp_path, monkeypatch):
     assert "openai-codex" not in payload.get("suppressed_sources", {})
     # New pool entry must be present
     entries = payload["credential_pool"]["openai-codex"]
-    assert any(e["source"] == "manual:device_code" for e in entries)
+    assert any(e["source"] == "device_code" for e in entries)
+    assert payload["active_provider"] == "openai-codex"
 
 
 def test_seed_from_singletons_respects_codex_suppression(tmp_path, monkeypatch):

tests/hermes_cli/test_web_oauth_dispatch.py

@@ -146,6 +146,67 @@ def test_nous_dashboard_device_flow_does_not_retry_legacy_scope_on_invoke_refusa
     assert requested_scopes == [auth_mod.DEFAULT_NOUS_SCOPE]
 
 
+def test_codex_dashboard_worker_persists_runtime_provider(tmp_path, monkeypatch):
+    from hermes_cli import web_server as ws
+    from hermes_cli.auth import get_active_provider
+    from hermes_cli.runtime_provider import resolve_runtime_provider
+
+    access_token = "h.eyJleHAiOjk5OTk5OTk5OTl9.s"
+
+    class _Resp:
+        def __init__(self, status_code, payload):
+            self.status_code = status_code
+            self._payload = payload
+
+        def json(self):
+            return self._payload
+
+    class _Client:
+        def __init__(self, *args, **kwargs):
+            pass
+
+        def __enter__(self):
+            return self
+
+        def __exit__(self, *args):
+            return False
+
+        def post(self, url, **kwargs):
+            if url.endswith("/deviceauth/usercode"):
+                return _Resp(200, {
+                    "device_auth_id": "device-auth-id",
+                    "interval": 3,
+                    "user_code": "CODEX-1234",
+                })
+            if url.endswith("/deviceauth/token"):
+                return _Resp(200, {
+                    "authorization_code": "authorization-code",
+                    "code_verifier": "code-verifier",
+                })
+            return _Resp(200, {
+                "access_token": access_token,
+                "refresh_token": "codex-refresh",
+            })
+
+    monkeypatch.setenv("HERMES_HOME", str(tmp_path))
+    monkeypatch.setattr(httpx, "Client", _Client)
+    monkeypatch.setattr(ws.time, "sleep", lambda _: None)
+
+    sid, _ = ws._new_oauth_session("openai-codex", "device_code")
+    try:
+        ws._codex_full_login_worker(sid)
+
+        assert ws._oauth_sessions[sid]["status"] == "approved"
+        assert get_active_provider() == "openai-codex"
+
+        runtime = resolve_runtime_provider(requested=None)
+        assert runtime["provider"] == "openai-codex"
+        assert runtime["api_key"] == access_token
+        assert runtime["api_mode"] == "codex_responses"
+    finally:
+        ws._oauth_sessions.pop(sid, None)
+
+
 def test_nous_dashboard_poller_preserves_effective_scope_when_token_omits_scope(monkeypatch):
     from hermes_cli import auth as auth_mod
     from hermes_cli import web_server as ws