feat: add native Anthropic auxiliary vision

tests/agent/test_auxiliary_client.py

@@ -10,6 +10,8 @@ import pytest
 from agent.auxiliary_client import (
     get_text_auxiliary_client,
     get_vision_auxiliary_client,
+    get_available_vision_backends,
+    resolve_provider_client,
     auxiliary_max_tokens_param,
     _read_codex_access_token,
     _get_auxiliary_provider,
@@ -24,6 +26,7 @@ def _clean_env(monkeypatch):
     for key in (
         "OPENROUTER_API_KEY", "OPENAI_BASE_URL", "OPENAI_API_KEY",
         "OPENAI_MODEL", "LLM_MODEL", "NOUS_INFERENCE_BASE_URL",
+        "ANTHROPIC_API_KEY", "ANTHROPIC_TOKEN", "CLAUDE_CODE_OAUTH_TOKEN",
         # Per-task provider/model overrides
         "AUXILIARY_VISION_PROVIDER", "AUXILIARY_VISION_MODEL",
         "AUXILIARY_WEB_EXTRACT_PROVIDER", "AUXILIARY_WEB_EXTRACT_MODEL",
@@ -164,14 +167,74 @@ class TestGetTextAuxiliaryClient:
 
 
 class TestVisionClientFallback:
-    """Vision client auto mode only tries OpenRouter + Nous (multimodal-capable)."""
+    """Vision client auto mode resolves known-good multimodal backends."""
 
     def test_vision_returns_none_without_any_credentials(self):
-        with patch("agent.auxiliary_client._read_nous_auth", return_value=None):
+        with (
+            patch("agent.auxiliary_client._read_nous_auth", return_value=None),
+            patch("agent.auxiliary_client._try_anthropic", return_value=(None, None)),
+        ):
             client, model = get_vision_auxiliary_client()
         assert client is None
         assert model is None
 
+    def test_vision_auto_includes_anthropic_when_configured(self, monkeypatch):
+        monkeypatch.setenv("ANTHROPIC_API_KEY", "sk-ant-api03-key")
+        with (
+            patch("agent.auxiliary_client._read_nous_auth", return_value=None),
+            patch("agent.anthropic_adapter.build_anthropic_client", return_value=MagicMock()),
+            patch("agent.anthropic_adapter.resolve_anthropic_token", return_value="sk-ant-api03-key"),
+        ):
+            backends = get_available_vision_backends()
+
+        assert "anthropic" in backends
+
+    def test_resolve_provider_client_returns_native_anthropic_wrapper(self, monkeypatch):
+        monkeypatch.setenv("ANTHROPIC_API_KEY", "sk-ant-api03-key")
+        with (
+            patch("agent.auxiliary_client._read_nous_auth", return_value=None),
+            patch("agent.anthropic_adapter.build_anthropic_client", return_value=MagicMock()),
+            patch("agent.anthropic_adapter.resolve_anthropic_token", return_value="sk-ant-api03-key"),
+        ):
+            client, model = resolve_provider_client("anthropic")
+
+        assert client is not None
+        assert client.__class__.__name__ == "AnthropicAuxiliaryClient"
+        assert model == "claude-haiku-4-5-20251001"
+
+    def test_vision_auto_uses_anthropic_when_no_higher_priority_backend(self, monkeypatch):
+        monkeypatch.setenv("ANTHROPIC_API_KEY", "sk-ant-api03-key")
+        with (
+            patch("agent.auxiliary_client._read_nous_auth", return_value=None),
+            patch("agent.anthropic_adapter.build_anthropic_client", return_value=MagicMock()),
+            patch("agent.anthropic_adapter.resolve_anthropic_token", return_value="sk-ant-api03-key"),
+        ):
+            client, model = get_vision_auxiliary_client()
+
+        assert client is not None
+        assert client.__class__.__name__ == "AnthropicAuxiliaryClient"
+        assert model == "claude-haiku-4-5-20251001"
+
+    def test_selected_anthropic_provider_is_preferred_for_vision_auto(self, monkeypatch):
+        monkeypatch.setenv("OPENROUTER_API_KEY", "or-key")
+        monkeypatch.setenv("ANTHROPIC_API_KEY", "sk-ant-api03-key")
+
+        def fake_load_config():
+            return {"model": {"provider": "anthropic", "default": "claude-sonnet-4-6"}}
+
+        with (
+            patch("agent.auxiliary_client._read_nous_auth", return_value=None),
+            patch("agent.anthropic_adapter.build_anthropic_client", return_value=MagicMock()),
+            patch("agent.anthropic_adapter.resolve_anthropic_token", return_value="sk-ant-api03-key"),
+            patch("agent.auxiliary_client.OpenAI") as mock_openai,
+            patch("hermes_cli.config.load_config", fake_load_config),
+        ):
+            client, model = get_vision_auxiliary_client()
+
+        assert client is not None
+        assert client.__class__.__name__ == "AnthropicAuxiliaryClient"
+        assert model == "claude-haiku-4-5-20251001"
+
     def test_vision_auto_includes_codex(self, codex_auth_dir):
         """Codex supports vision (gpt-5.3-codex), so auto mode should use it."""
         with patch("agent.auxiliary_client._read_nous_auth", return_value=None), \