feat: add visual settings and readiness gate

services/api/app/integrations/model_router.py

@@ -1,4 +1,6 @@
 from dataclasses import dataclass
+from collections.abc import Mapping
+from typing import Any
 
 from app.config import Settings
 
@@ -15,35 +17,27 @@ class ProviderCapability:
 
 
 class ModelRouter:
-    def __init__(self, settings: Settings) -> None:
+    def __init__(self, settings: Settings | Mapping[str, Any]) -> None:
         self.settings = settings
 
+    def _value(self, key: str, default: str = "") -> str:
+        if isinstance(self.settings, Mapping):
+            return str(self.settings.get(key, default) or "")
+        return str(getattr(self.settings, key, default) or "")
+
     def capabilities(self) -> list[ProviderCapability]:
         return [
             ProviderCapability(
-                provider="seedream",
-                configured=_configured(self.settings.ark_api_key)
-                and bool(self.settings.seedream_model_endpoint),
-                strengths=("中文风格指令", "快速方向探索"),
-            ),
-            ProviderCapability(
-                provider="openai",
-                configured=_configured(self.settings.openai_api_key),
-                strengths=("局部编辑", "多轮一致性", "遮罩修改"),
-            ),
-            ProviderCapability(
-                provider="gemini",
-                configured=_configured(self.settings.gemini_api_key),
-                strengths=("多参考图理解", "复杂视觉指令"),
+                provider=self._value("ai_provider", "custom"),
+                configured=_configured(self._value("ai_api_key"))
+                and bool(self._value("ai_base_url"))
+                and bool(self._value("image_model")),
+                strengths=("统一模型网关", "空间理解", "图像生成与编辑"),
             ),
         ]
 
     def choose_image_provider(self, task: str) -> str:
-        configured = {item.provider for item in self.capabilities() if item.configured}
-        priorities = [item.strip() for item in self.settings.image_provider_priority.split(",")]
-        if task == "masked_edit" and "openai" in configured:
-            return "openai"
-        for provider in priorities:
-            if provider in configured:
-                return provider
+        configured = [item.provider for item in self.capabilities() if item.configured]
+        if configured:
+            return configured[0]
         raise RuntimeError("No image provider is configured.")