fix(provider): split partial model fetch warnings from errors

frontend/src/features/providers/components/BatchAssignModelsDialog.vue

@@ -357,8 +357,8 @@ async function applyAutoMatchFromKey(key: AutoMatchKey) {
     const result = await fetchCachedModels(props.providerId, key.id, true)
     if (!props.open) return
 
-    if (result.error && result.models.length > 0) {
-      showWarning(`部分格式获取失败: ${result.error}`)
+    if (result.warning) {
+      showWarning(`部分格式获取失败: ${result.warning}`)
     }
 
     if (result.models.length === 0) {

frontend/src/features/providers/components/EndpointFormDialog.vue

@@ -154,7 +154,6 @@
                     <Input
                       :model-value="getDisplayedPath(endpoint)"
                       :placeholder="getEndpointDefaultPath(endpoint) || '留空使用默认'"
-                      :disabled="isFixedProvider"
                       @update:model-value="(v) => updateEndpointField(endpoint.id, 'path', v)"
                     />
                     <p
@@ -1878,9 +1877,6 @@ function getEndpointDefaultPath(endpoint: ProviderEndpoint): string {
 }
 
 function getDisplayedPath(endpoint: ProviderEndpoint): string {
-  if (isFixedProvider.value) {
-    return getDefaultPath(endpoint.api_format, endpoint.base_url)
-  }
   return getEndpointEditState(endpoint.id)?.path ?? (endpoint.custom_path || '')
 }
 
@@ -3217,13 +3213,13 @@ async function saveEndpoint(endpoint: ProviderEndpoint) {
 
   savingEndpointId.value = endpoint.id
   try {
-    // 仅提交变更字段，避免 fixed provider 因 base_url/custom_path 被锁定而更新失败
+    // 仅提交变更字段；fixed provider 锁定 base_url，但允许覆盖 custom_path。
     const payload: Record<string, unknown> = {}
 
     if (!isFixedProvider.value) {
       if (state.url !== endpoint.base_url) payload.base_url = state.url
-      if (state.path !== (endpoint.custom_path || '')) payload.custom_path = state.path || null
     }
+    if (state.path !== (endpoint.custom_path || '')) payload.custom_path = state.path || null
 
     if (hasRulesChanges(endpoint)) payload.header_rules = rulesToHeaderRules(state.rules)
     if (hasResponseHeaderRulesChanges(endpoint)) {

frontend/src/features/providers/components/KeyAllowedModelsDialog.vue

@@ -295,9 +295,8 @@ async function fetchUpstreamModels() {
         .filter((m: UpstreamModel) => !existingModelIds.value.has(m.id))
         .map((m: UpstreamModel) => m.id)
       hasQueried.value = true
-      // 如果有部分失败，显示警告提示
-      if (result.error) {
-        showWarning(result.error, '部分格式获取失败')
+      if (result.warning) {
+        showWarning(result.warning, '部分格式获取失败')
       }
     } else if (result.error) {
       errorMessage.value = result.error

frontend/src/features/providers/components/KeyAllowedModelsEditDialog.vue

@@ -691,8 +691,8 @@ async function fetchUpstreamModels(forceRefresh = false) {
       // 获取上游模型后，从自定义模型列表中移除已变成已知的模型
       const upstreamIds = new Set(result.models.map((m: UpstreamModel) => m.id))
       allCustomModels.value = allCustomModels.value.filter(m => !upstreamIds.has(m))
-      if (result.error) {
-        showWarning(result.error, '部分格式获取失败')
+      if (result.warning) {
+        showWarning(result.warning, '部分格式获取失败')
       }
     } else if (result.error) {
       showError(result.error, '获取上游模型失败')

frontend/src/features/providers/components/ModelMappingDialog.vue

@@ -564,12 +564,11 @@ async function fetchUpstreamModels() {
       const mergedCustom = new Set([...allCustomNames.value, ...customFromSelected])
       allCustomNames.value = Array.from(mergedCustom).filter(name => !upstreamIds.has(name))
     }
+    if (result.warning) {
+      showWarning(result.warning, '部分格式获取失败')
+    }
     if (result.error) {
-      if (result.models.length > 0) {
-        showWarning(result.error, '部分格式获取失败')
-      } else {
-        showError(result.error, '获取上游模型失败')
-      }
+      showError(result.error, '获取上游模型失败')
     }
   } catch (err: unknown) {
     showError(parseApiError(err, '获取上游模型列表失败'), '错误')

frontend/src/features/providers/components/__tests__/endpoint-default-paths.spec.ts

@@ -94,7 +94,7 @@ describe('endpoint default paths', () => {
     })).toBe('/responses')
   })
 
-  it('drops /v1 from Claude Messages defaults for v1 and unversioned api roots', () => {
+  it('keeps /v1 for Claude Messages defaults unless base URL already ends with v1', () => {
     expect(getDefaultEndpointPath({
       apiFormat: 'claude:messages',
       providerType: 'custom',
@@ -107,13 +107,13 @@ describe('endpoint default paths', () => {
       providerType: 'custom',
       baseUrl: 'https://proxy.example.com/api',
       apiFormats,
-    })).toBe('/messages')
+    })).toBe('/v1/messages')
 
     expect(getDefaultEndpointPath({
       apiFormat: 'claude:messages',
       providerType: 'custom',
       baseUrl: 'https://proxy.example.com/anthropic',
       apiFormats,
-    })).toBe('/messages')
+    })).toBe('/v1/messages')
   })
 })

frontend/src/features/providers/components/endpoint-default-paths.ts

@@ -69,7 +69,7 @@ function openAiCompatibleBaseIncludesApiRoot(baseUrl?: string | null): boolean {
 }
 
 function v1CompatibleBaseIncludesApiRoot(baseUrl?: string | null): boolean {
-  return baseUrlEndsWithV1Root(baseUrl) || baseUrlHasPathApiRoot(baseUrl)
+  return baseUrlEndsWithV1Root(baseUrl)
 }
 
 function stripV1PrefixForApiRoot(path: string): string {