feat(providers): add SiliconFlow gateway support

opencane/config/schema.py

@@ -200,6 +200,7 @@ class ProvidersConfig(BaseModel):
     moonshot: ProviderConfig = Field(default_factory=ProviderConfig)
     minimax: ProviderConfig = Field(default_factory=ProviderConfig)
     aihubmix: ProviderConfig = Field(default_factory=ProviderConfig)  # AiHubMix API gateway
+    siliconflow: ProviderConfig = Field(default_factory=ProviderConfig)  # SiliconFlow API gateway
 
 
 class GatewayConfig(BaseModel):

opencane/providers/registry.py

@@ -121,6 +121,25 @@ def label(self) -> str:
         model_overrides=(),
     ),
 
+    # SiliconFlow: OpenAI-compatible gateway hosting multiple models.
+    # Keep model org prefixes (e.g. "Qwen/Qwen2.5-14B-Instruct").
+    ProviderSpec(
+        name="siliconflow",
+        keywords=("siliconflow",),
+        env_key="OPENAI_API_KEY",           # OpenAI-compatible
+        display_name="SiliconFlow",
+        litellm_prefix="openai",            # → openai/{model}
+        skip_prefixes=(),
+        env_extras=(),
+        is_gateway=True,
+        is_local=False,
+        detect_by_key_prefix="",
+        detect_by_base_keyword="siliconflow",
+        default_api_base="https://api.siliconflow.cn/v1",
+        strip_model_prefix=False,
+        model_overrides=(),
+    ),
+
     # === Standard providers (matched by model-name keywords) ===============
 
     # Anthropic: LiteLLM recognizes "claude-*" natively, no prefix needed.

tests/test_provider_routing.py

@@ -1,5 +1,5 @@
 from opencane.config.schema import Config
-from opencane.providers.registry import find_by_model
+from opencane.providers.registry import find_by_model, find_gateway
 
 
 def test_find_by_model_prefers_explicit_prefix_over_keyword_match() -> None:
@@ -16,3 +16,17 @@ def test_config_match_prefers_explicit_prefix_when_multiple_provider_keys_presen
 
     assert cfg.get_provider_name() == "deepseek"
 
+
+def test_find_gateway_detects_siliconflow_by_api_base_keyword() -> None:
+    spec = find_gateway(api_base="https://api.siliconflow.cn/v1")
+    assert spec is not None
+    assert spec.name == "siliconflow"
+
+
+def test_config_uses_siliconflow_gateway_defaults() -> None:
+    cfg = Config()
+    cfg.agents.defaults.model = "siliconflow/Qwen/Qwen2.5-14B-Instruct"
+    cfg.providers.siliconflow.api_key = "sf-key"
+
+    assert cfg.get_provider_name() == "siliconflow"
+    assert cfg.get_api_base() == "https://api.siliconflow.cn/v1"