feat: add StepFun (阶跃星辰) provider

.arts/settings.json

@@ -0,0 +1,3 @@
+{
+    "clawMode.mode": "editor"
+}

src/components/settings/provider-presets.tsx

@@ -23,6 +23,7 @@ import Bailian from "@lobehub/icons/es/Bailian";
 import XiaomiMiMo from "@lobehub/icons/es/XiaomiMiMo";
 import Ollama from "@lobehub/icons/es/Ollama";
 import OpenAI from "@lobehub/icons/es/OpenAI";
+import Stepfun from "@lobehub/icons/es/Stepfun";
 
 // ---------------------------------------------------------------------------
 // Brand icon resolver
@@ -45,6 +46,7 @@ const ICON_BY_KEY: Record<ProviderIconKey, ReactNode> = {
   ollama: <Ollama size={18} />,
   openai: <OpenAI size={18} />,
   deepseek: <DeepSeek size={18} />,
+  stepfun: <Stepfun size={18} />,
   bedrock: <Bedrock size={18} />,
   google: <Google size={18} />,
   aws: <Aws size={18} />,
@@ -102,6 +104,7 @@ function resolveIcon(iconKey: string): ReactNode {
     ollama: <Ollama size={18} />,
     openai: <OpenAI size={18} />,
     deepseek: <DeepSeek size={18} />,
+    stepfun: <Stepfun size={18} />,
     cline: <Cline size={18} />,
     opencode: <OpenCode size={18} />,
     server: <HardDrives size={18} className="text-muted-foreground" />,

src/lib/provider-catalog.ts

@@ -1129,6 +1129,84 @@ export const VENDOR_PRESETS: VendorPreset[] = [
     },
   },
 
+  // ── StepFun (阶跃星辰) ──
+  {
+    key: 'stepfun',
+    name: 'StepFun',
+    description: 'StepFun Step Plan — Anthropic-compatible reasoning API',
+    descriptionZh: '阶跃星辰 Step Plan — Anthropic 兼容推理 API',
+    protocol: 'anthropic',
+    authStyle: 'api_key',
+    baseUrl: 'https://api.stepfun.com/step_plan',
+    defaultEnvOverrides: {
+      CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: '1',
+    },
+    defaultModels: [
+      {
+        modelId: 'step-3.7-flash',
+        upstreamModelId: 'step-3.7-flash',
+        displayName: 'Step 3.7 Flash',
+        role: 'default',
+        capabilities: {
+          reasoning: true,
+          toolUse: true,
+          vision: true,
+          supportsEffort: true,
+          supportedEffortLevels: ['low', 'medium', 'high'],
+        },
+      },
+      {
+        modelId: 'step-3.5-flash-2603',
+        upstreamModelId: 'step-3.5-flash-2603',
+        displayName: 'Step 3.5 Flash 2603',
+        role: 'sonnet',
+        capabilities: {
+          reasoning: true,
+          toolUse: true,
+          supportsEffort: true,
+          supportedEffortLevels: ['low', 'medium', 'high'],
+        },
+      },
+      {
+        modelId: 'step-3.5-flash',
+        upstreamModelId: 'step-3.5-flash',
+        displayName: 'Step 3.5 Flash',
+        role: 'haiku',
+        capabilities: {
+          reasoning: true,
+          toolUse: true,
+        },
+      },
+      {
+        modelId: 'step-router-v1',
+        upstreamModelId: 'step-router-v1',
+        displayName: 'Step Router V1',
+        capabilities: {
+          reasoning: true,
+          toolUse: true,
+        },
+      },
+    ],
+    defaultRoleModels: {
+      default: 'step-3.7-flash',
+      opus: 'step-3.7-flash',
+      sonnet: 'step-3.5-flash-2603',
+      haiku: 'step-3.5-flash',
+    },
+    fields: ['api_key'],
+    iconKey: 'stepfun',
+    sdkProxyOnly: true,
+    meta: {
+      apiKeyUrl: 'https://platform.stepfun.com/interface-key',
+      docsUrl: 'https://platform.stepfun.com/docs/zh/step-plan/integrations/reasoning-api',
+      billingModel: 'token_plan',
+      notes: [
+        '需订阅 Step Plan 套餐并获取 API Key',
+        'Anthropic SDK 会自动拼接 /v1/messages，base_url 不带 /v1',
+      ],
+    },
+  },
+
   // ── AWS Bedrock ──
   {
     key: 'bedrock',
@@ -1690,6 +1768,13 @@ export function canReliablyFetchModels(
       reasonEn: "DeepSeek does not expose /v1/models — use manual entry in Add model.",
     };
   }
+  if (preset.key === 'stepfun') {
+    return {
+      reliable: false,
+      reasonZh: '阶跃星辰 Step Plan 不支持通过 /v1/models 拉取列表，请在「添加模型」里手动输入 model id',
+      reasonEn: "StepFun Step Plan does not expose /v1/models — use manual entry in Add model.",
+    };
+  }
   // Image providers: catalog-only.
   if (preset.protocol === 'gemini-image' || preset.protocol === 'openai-image') {
     return {
@@ -1795,6 +1880,7 @@ export function canSearchUpstreamModels(
     'bailian-token-plan-cn',
     'xiaomi-mimo-token-plan',
     'deepseek',
+    'stepfun',
   ]);
   if (preset && manualOnlyKeys.has(preset.key)) {
     return {

src/lib/provider-icon-rule.ts

@@ -25,6 +25,7 @@ export type ProviderIconKey =
   | "ollama"
   | "openai"
   | "deepseek"
+  | "stepfun"
   | "bedrock"
   | "google"
   | "aws"
@@ -90,6 +91,7 @@ export function getProviderIconKey(name: string, baseUrl: string): ProviderIconK
   )
     return "openai";
   if (url.includes("deepseek") || lower.includes("deepseek")) return "deepseek";
+  if (url.includes("stepfun") || lower.includes("stepfun") || lower.includes("阶跃")) return "stepfun";
   if (lower.includes("bedrock")) return "bedrock";
   if (lower.includes("vertex") || lower.includes("google")) return "google";
   if (lower.includes("aws")) return "aws";