修复 LLM Provider 配置热更新问题

问题：在 /admin/llm/api 页面修改 AI 提供商配置后，配置没有立即生效，AI 依然使用旧的提供商工作

根本原因：
- LLM Provider 配置在程序启动时加载到内存 (llm.State)
- 管理后台修改配置时，只更新了数据库，内存配置未更新
- AI 继续使用内存中的旧配置

解决方案：
1. 为 llm.State 添加动态更新方法 (UpdateProvider/AddProvider/RemoveProvider)
2. 在 AI Service 中暴露配置更新接口，支持运行时重新加载
3. 在配置保存后自动触发内存配置重新加载
4. 创建新的 LLM Client 使新配置立即生效

关键特性：
- 线程安全：使用 sync.RWMutex 保护并发访问
- 容错处理：重新加载失败不影响数据库更新
- 无需重启：配置修改后立即生效
- 完整测试：添加单元测试验证功能

修改文件：
- internal/llm/state.go: 添加配置更新方法
- internal/ai/service.go: 添加配置重新加载接口
- internal/llmadmin/admin_llm_routes.go: 配置更新时触发重新加载
- internal/web/web.go: 传递 AI Service 到路由
- main.go: 连接组件
- internal/llm/state_test.go: 新增单元测试
- internal/web/map_tile_proxy_routes_test.go: 修复测试

测试：
- ✅ 所有现有测试通过
- ✅ 新增测试覆盖核心功能
- ✅ 项目成功编译

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

CHANGELOG_LLM_CONFIG_FIX.md

@@ -0,0 +1,113 @@
+# LLM Provider 配置热更新修复
+
+## 问题描述
+
+在 `/admin/llm/api` 页面修改 AI 提供商配置后，配置没有立即生效，AI 依然使用旧的提供商在工作。
+
+## 根本原因
+
+1. **LLM Provider 配置在程序启动时加载到内存** (`llm.State`)
+2. **通过管理后台修改配置时，只更新了数据库**，内存中的配置没有更新
+3. **AI 继续使用内存中的旧配置**工作
+
+## 解决方案
+
+### 1. 为 `llm.State` 添加动态更新方法
+
+在 `internal/llm/state.go` 中添加了三个新方法：
+
+- **`UpdateProvider(config ProviderConfig) error`** - 更新现有 provider 的配置
+- **`AddProvider(config ProviderConfig) error`** - 添加新的 provider
+- **`RemoveProvider(name string) error`** - 删除 provider
+
+这些方法会：
+- 更新内存中的配置
+- 重新创建 LLM Client（使用新的 API Key、BaseURL 等）
+- 管理 active provider 的切换
+
+### 2. 在 AI Service 中暴露配置更新接口
+
+在 `internal/ai/service.go` 中添加了：
+
+```go
+func (s *Service) ReloadLLMProvider(config interface{}) error
+func (s *Service) AddLLMProvider(config interface{}) error
+func (s *Service) RemoveLLMProvider(name string) error
+```
+
+这些方法接受 `interface{}` 类型（来自 HTTP handler 的 map），转换为 `llm.ProviderConfig`，然后调用 `llm.State` 的相应方法。
+
+### 3. 在管理路由中触发配置重新加载
+
+修改了 `internal/llmadmin/admin_llm_routes.go`：
+
+- 添加了 `LLMProviderReloader` 接口
+- `RegisterRoutes` 接受 `aiService LLMProviderReloader` 参数
+- `handleCreateLLMProvider`、`handleUpdateLLMProvider`、`handleDeleteLLMProvider` 在数据库操作成功后，调用 `aiService` 的相应方法更新内存配置
+
+### 4. 连接所有组件
+
+修改了：
+- `internal/web/web.go` - 添加 `LLMProviderReloader` 接口，并在路由注册时传递 `aiService`
+- `main.go` - 将 `aiService` 传递给 web router
+
+## 关键特性
+
+### 线程安全
+所有 `llm.State` 的更新操作都使用 `sync.RWMutex` 保护，确保并发安全。
+
+### 容错处理
+如果配置重新加载失败（例如 AI Service 未启用），不会导致请求失败。数据库已经更新，只会返回一个警告信息。
+
+### Active Provider 管理
+- 更新 provider 为 active 时，自动切换到该 provider
+- 删除当前 active provider 时，自动切换到第一个可用的 provider
+- 不允许删除最后一个 provider
+
+## 测试
+
+创建了 `internal/llm/state_test.go`，包含以下测试：
+- `TestUpdateProvider` - 验证配置更新功能
+- `TestAddProvider` - 验证添加新 provider
+- `TestRemoveProvider` - 验证删除 provider
+
+所有测试都通过 ✅
+
+## 使用效果
+
+修复后，在 `/admin/llm/api` 页面修改 AI 提供商配置时：
+1. 配置保存到数据库
+2. 立即更新内存中的配置
+3. 创建新的 LLM Client
+4. **无需重启服务**，配置立即生效
+
+## 影响范围
+
+### 修改的文件
+- `internal/llm/state.go` - 添加配置更新方法
+- `internal/ai/service.go` - 添加配置重新加载接口
+- `internal/llmadmin/admin_llm_routes.go` - 在配置更新时触发重新加载
+- `internal/web/web.go` - 传递 AI Service 到路由
+- `main.go` - 连接组件
+
+### 新增的文件
+- `internal/llm/state_test.go` - 单元测试
+
+### 兼容性
+- 完全向后兼容
+- 如果 AI Service 未启用（`aiService == nil`），配置更新仍然正常工作，只是不会触发重新加载
+- 不影响现有功能
+
+## 类似功能参考
+
+该实现参考了项目中已有的 ToolRouter 和 TopicRouter 的配置热更新机制，它们通过 `ConfigStore` 接口在每次使用时从数据库重新加载配置。
+
+不同之处在于：
+- **ToolRouter/TopicRouter**: 每次使用时从 DB 读取（配置小，读取频率低）
+- **LLM Provider**: 在配置更新时主动重新加载（Client 创建有开销，不适合频繁创建）
+
+## 未来改进建议
+
+1. 添加配置验证：在更新前验证 API Key、BaseURL 是否可用
+2. 添加配置变更日志：记录谁在何时修改了配置
+3. 支持配置回滚：保存历史版本，出问题时可以快速回滚

internal/ai/service.go

@@ -258,3 +258,69 @@ func (s *Service) Stop() {
 func (s *Service) Enabled() bool {
 	return s.enabled
 }
+
+// ReloadLLMProvider reloads a specific LLM provider configuration
+func (s *Service) ReloadLLMProvider(config interface{}) error {
+	if !s.enabled || s.LLMState == nil {
+		return nil
+	}
+	providerConfig, err := convertToProviderConfig(config)
+	if err != nil {
+		return err
+	}
+	return s.LLMState.UpdateProvider(providerConfig)
+}
+
+// AddLLMProvider adds a new LLM provider
+func (s *Service) AddLLMProvider(config interface{}) error {
+	if !s.enabled || s.LLMState == nil {
+		return nil
+	}
+	providerConfig, err := convertToProviderConfig(config)
+	if err != nil {
+		return err
+	}
+	return s.LLMState.AddProvider(providerConfig)
+}
+
+// RemoveLLMProvider removes an LLM provider
+func (s *Service) RemoveLLMProvider(name string) error {
+	if !s.enabled || s.LLMState == nil {
+		return nil
+	}
+	return s.LLMState.RemoveProvider(name)
+}
+
+// convertToProviderConfig converts a map to llm.ProviderConfig
+func convertToProviderConfig(config interface{}) (llm.ProviderConfig, error) {
+	m, ok := config.(map[string]interface{})
+	if !ok {
+		return llm.ProviderConfig{}, fmt.Errorf("invalid config type: expected map[string]interface{}")
+	}
+
+	pc := llm.ProviderConfig{}
+
+	if v, ok := m["Name"].(string); ok {
+		pc.Name = v
+	}
+	if v, ok := m["Active"].(bool); ok {
+		pc.Active = v
+	}
+	if v, ok := m["APIKey"].(string); ok {
+		pc.APIKey = v
+	}
+	if v, ok := m["BaseURL"].(string); ok {
+		pc.BaseURL = v
+	}
+	if v, ok := m["Model"].(string); ok {
+		pc.Model = v
+	}
+	if v, ok := m["Timeout"].(int); ok {
+		pc.Timeout = v
+	}
+	if v, ok := m["ContextWindowTokens"].(int); ok {
+		pc.ContextWindowTokens = v
+	}
+
+	return pc, nil
+}

internal/llm/state.go

@@ -135,3 +135,137 @@ func (s *State) ListProfiles() []ProviderConfig {
 	}
 	return profiles
 }
+
+// UpdateProvider updates an existing provider's configuration
+func (s *State) UpdateProvider(config ProviderConfig) error {
+	name := strings.TrimSpace(config.Name)
+	if name == "" {
+		return errors.New("llm provider name cannot be empty")
+	}
+	if strings.TrimSpace(config.APIKey) == "" {
+		return fmt.Errorf("llm provider %s api_key is required", name)
+	}
+	if strings.TrimSpace(config.Model) == "" {
+		return fmt.Errorf("llm provider %s model is required", name)
+	}
+	if strings.TrimSpace(config.BaseURL) == "" {
+		return fmt.Errorf("llm provider %s base_url is required", name)
+	}
+	if config.Timeout <= 0 {
+		config.Timeout = 120
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if _, ok := s.profiles[name]; !ok {
+		return fmt.Errorf("llm provider not found: %s", name)
+	}
+
+	// Create new client with updated config
+	s.profiles[name] = &Profile{
+		Config: config,
+		Client: ark.NewClientWithApiKey(
+			config.APIKey,
+			ark.WithBaseUrl(config.BaseURL),
+			ark.WithTimeout(time.Duration(config.Timeout)*time.Second),
+		),
+	}
+
+	// Update active status if needed
+	if config.Active && s.activeName != name {
+		s.activeName = name
+	} else if !config.Active && s.activeName == name {
+		// If we're deactivating the current active provider, switch to the first available
+		for _, otherName := range s.order {
+			if otherName != name {
+				s.activeName = otherName
+				break
+			}
+		}
+	}
+
+	return nil
+}
+
+// AddProvider adds a new provider to the state
+func (s *State) AddProvider(config ProviderConfig) error {
+	name := strings.TrimSpace(config.Name)
+	if name == "" {
+		return errors.New("llm provider name cannot be empty")
+	}
+	if strings.TrimSpace(config.APIKey) == "" {
+		return fmt.Errorf("llm provider %s api_key is required", name)
+	}
+	if strings.TrimSpace(config.Model) == "" {
+		return fmt.Errorf("llm provider %s model is required", name)
+	}
+	if strings.TrimSpace(config.BaseURL) == "" {
+		return fmt.Errorf("llm provider %s base_url is required", name)
+	}
+	if config.Timeout <= 0 {
+		config.Timeout = 120
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if _, ok := s.profiles[name]; ok {
+		return fmt.Errorf("llm provider already exists: %s", name)
+	}
+
+	s.profiles[name] = &Profile{
+		Config: config,
+		Client: ark.NewClientWithApiKey(
+			config.APIKey,
+			ark.WithBaseUrl(config.BaseURL),
+			ark.WithTimeout(time.Duration(config.Timeout)*time.Second),
+		),
+	}
+	s.order = append(s.order, name)
+
+	// Set as active if it's the first one or explicitly marked active
+	if len(s.profiles) == 1 || config.Active {
+		s.activeName = name
+	}
+
+	return nil
+}
+
+// RemoveProvider removes a provider from the state
+func (s *State) RemoveProvider(name string) error {
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return errors.New("llm provider name cannot be empty")
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if _, ok := s.profiles[name]; !ok {
+		return fmt.Errorf("llm provider not found: %s", name)
+	}
+
+	// Don't allow removing the last provider
+	if len(s.profiles) == 1 {
+		return errors.New("cannot remove the last llm provider")
+	}
+
+	delete(s.profiles, name)
+
+	// Remove from order
+	newOrder := make([]string, 0, len(s.order)-1)
+	for _, n := range s.order {
+		if n != name {
+			newOrder = append(newOrder, n)
+		}
+	}
+	s.order = newOrder
+
+	// If we removed the active provider, switch to the first available
+	if s.activeName == name {
+		s.activeName = s.order[0]
+	}
+
+	return nil
+}

internal/llm/state_test.go

@@ -0,0 +1,160 @@
+package llm
+
+import (
+	"testing"
+)
+
+func TestUpdateProvider(t *testing.T) {
+	// Create initial state with one provider
+	configs := []ProviderConfig{
+		{
+			Name:                "test-provider",
+			Active:              true,
+			APIKey:              "test-key",
+			BaseURL:             "https://test.example.com",
+			Model:               "test-model",
+			Timeout:             120,
+			ContextWindowTokens: 4096,
+		},
+	}
+
+	state, err := NewState(configs)
+	if err != nil {
+		t.Fatalf("failed to create state: %v", err)
+	}
+
+	// Get the initial profile
+	profile := state.ActiveProfile()
+	if profile.Config.APIKey != "test-key" {
+		t.Errorf("expected APIKey 'test-key', got '%s'", profile.Config.APIKey)
+	}
+
+	// Update the provider with new config
+	updatedConfig := ProviderConfig{
+		Name:                "test-provider",
+		Active:              true,
+		APIKey:              "new-key",
+		BaseURL:             "https://new.example.com",
+		Model:               "new-model",
+		Timeout:             60,
+		ContextWindowTokens: 8192,
+	}
+
+	err = state.UpdateProvider(updatedConfig)
+	if err != nil {
+		t.Fatalf("failed to update provider: %v", err)
+	}
+
+	// Verify the update
+	profile = state.ActiveProfile()
+	if profile.Config.APIKey != "new-key" {
+		t.Errorf("expected updated APIKey 'new-key', got '%s'", profile.Config.APIKey)
+	}
+	if profile.Config.BaseURL != "https://new.example.com" {
+		t.Errorf("expected updated BaseURL 'https://new.example.com', got '%s'", profile.Config.BaseURL)
+	}
+	if profile.Config.Model != "new-model" {
+		t.Errorf("expected updated Model 'new-model', got '%s'", profile.Config.Model)
+	}
+	if profile.Config.Timeout != 60 {
+		t.Errorf("expected updated Timeout 60, got %d", profile.Config.Timeout)
+	}
+}
+
+func TestAddProvider(t *testing.T) {
+	// Create initial state with one provider
+	configs := []ProviderConfig{
+		{
+			Name:                "provider1",
+			Active:              true,
+			APIKey:              "key1",
+			BaseURL:             "https://example1.com",
+			Model:               "model1",
+			Timeout:             120,
+			ContextWindowTokens: 4096,
+		},
+	}
+
+	state, err := NewState(configs)
+	if err != nil {
+		t.Fatalf("failed to create state: %v", err)
+	}
+
+	// Add a second provider
+	newConfig := ProviderConfig{
+		Name:                "provider2",
+		Active:              false,
+		APIKey:              "key2",
+		BaseURL:             "https://example2.com",
+		Model:               "model2",
+		Timeout:             60,
+		ContextWindowTokens: 8192,
+	}
+
+	err = state.AddProvider(newConfig)
+	if err != nil {
+		t.Fatalf("failed to add provider: %v", err)
+	}
+
+	// Verify the new provider exists
+	profile, err := state.GetProfile("provider2")
+	if err != nil {
+		t.Fatalf("failed to get provider2: %v", err)
+	}
+	if profile.Config.Name != "provider2" {
+		t.Errorf("expected name 'provider2', got '%s'", profile.Config.Name)
+	}
+
+	// Verify active provider is still provider1
+	activeProfile := state.ActiveProfile()
+	if activeProfile.Config.Name != "provider1" {
+		t.Errorf("expected active provider 'provider1', got '%s'", activeProfile.Config.Name)
+	}
+}
+
+func TestRemoveProvider(t *testing.T) {
+	// Create initial state with two providers
+	configs := []ProviderConfig{
+		{
+			Name:                "provider1",
+			Active:              true,
+			APIKey:              "key1",
+			BaseURL:             "https://example1.com",
+			Model:               "model1",
+			Timeout:             120,
+			ContextWindowTokens: 4096,
+		},
+		{
+			Name:                "provider2",
+			Active:              false,
+			APIKey:              "key2",
+			BaseURL:             "https://example2.com",
+			Model:               "model2",
+			Timeout:             60,
+			ContextWindowTokens: 8192,
+		},
+	}
+
+	state, err := NewState(configs)
+	if err != nil {
+		t.Fatalf("failed to create state: %v", err)
+	}
+
+	// Remove provider2
+	err = state.RemoveProvider("provider2")
+	if err != nil {
+		t.Fatalf("failed to remove provider: %v", err)
+	}
+
+	// Verify provider2 is gone
+	_, err = state.GetProfile("provider2")
+	if err == nil {
+		t.Error("expected error when getting removed provider, got nil")
+	}
+
+	// Try to remove the last provider (should fail)
+	err = state.RemoveProvider("provider1")
+	if err == nil {
+		t.Error("expected error when removing last provider, got nil")
+	}
+}

internal/llmadmin/admin_llm_routes.go

@@ -13,7 +13,14 @@ import (
 	"meshtastic_mqtt_server/internal/webutil"
 )
 
-func RegisterRoutes(r *gin.RouterGroup, store *storepkg.Store) {
+// LLMProviderReloader is the interface for reloading LLM provider configuration
+type LLMProviderReloader interface {
+	ReloadLLMProvider(config interface{}) error
+	AddLLMProvider(config interface{}) error
+	RemoveLLMProvider(name string) error
+}
+
+func RegisterRoutes(r *gin.RouterGroup, store *storepkg.Store, aiService LLMProviderReloader) {
 	group := r.Group("/llm")
 	{
 		// LLM Message Queue
@@ -27,9 +34,9 @@ func RegisterRoutes(r *gin.RouterGroup, store *storepkg.Store) {
 		// LLM Providers
 		group.GET("/providers", handleListLLMProviders(store))
 		group.GET("/providers/:name", handleGetLLMProvider(store))
-		group.POST("/providers", handleCreateLLMProvider(store))
-		group.PUT("/providers/:name", handleUpdateLLMProvider(store))
-		group.DELETE("/providers/:name", handleDeleteLLMProvider(store))
+		group.POST("/providers", handleCreateLLMProvider(store, aiService))
+		group.PUT("/providers/:name", handleUpdateLLMProvider(store, aiService))
+		group.DELETE("/providers/:name", handleDeleteLLMProvider(store, aiService))
 
 		// LLM Tool Router
 		group.GET("/tool-router", handleGetLLMToolRouter(store))
@@ -254,7 +261,7 @@ func handleGetLLMProvider(store *storepkg.Store) gin.HandlerFunc {
 	}
 }
 
-func handleCreateLLMProvider(store *storepkg.Store) gin.HandlerFunc {
+func handleCreateLLMProvider(store *storepkg.Store, aiService LLMProviderReloader) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		var req struct {
 			Name               string `json:"name"`
@@ -290,11 +297,33 @@ func handleCreateLLMProvider(store *storepkg.Store) gin.HandlerFunc {
 			return
 		}
 
+		// Reload AI service with new provider
+		if aiService != nil {
+			providerConfig := map[string]interface{}{
+				"Name":                record.Name,
+				"Active":              record.Active,
+				"APIKey":              record.APIKey,
+				"BaseURL":             record.BaseURL,
+				"Model":               record.Model,
+				"Timeout":             record.Timeout,
+				"ContextWindowTokens": record.ContextWindowTokens,
+			}
+			if err := aiService.AddLLMProvider(providerConfig); err != nil {
+				// Log warning but don't fail the request - database is already updated
+				c.JSON(http.StatusOK, gin.H{
+					"status":  "ok",
+					"item":    llmProviderDTO(*record),
+					"warning": "provider created but failed to reload AI service: " + err.Error(),
+				})
+				return
+			}
+		}
+
 		c.JSON(http.StatusOK, gin.H{"status": "ok", "item": llmProviderDTO(*record)})
 	}
 }
 
-func handleUpdateLLMProvider(store *storepkg.Store) gin.HandlerFunc {
+func handleUpdateLLMProvider(store *storepkg.Store, aiService LLMProviderReloader) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		name := c.Param("name")
 		if name == "" {
@@ -355,11 +384,33 @@ func handleUpdateLLMProvider(store *storepkg.Store) gin.HandlerFunc {
 			return
 		}
 
+		// Reload AI service with updated provider
+		if aiService != nil {
+			providerConfig := map[string]interface{}{
+				"Name":                record.Name,
+				"Active":              record.Active,
+				"APIKey":              record.APIKey,
+				"BaseURL":             record.BaseURL,
+				"Model":               record.Model,
+				"Timeout":             record.Timeout,
+				"ContextWindowTokens": record.ContextWindowTokens,
+			}
+			if err := aiService.ReloadLLMProvider(providerConfig); err != nil {
+				// Log warning but don't fail the request - database is already updated
+				c.JSON(http.StatusOK, gin.H{
+					"status":  "ok",
+					"item":    llmProviderDTO(*record),
+					"warning": "provider updated but failed to reload AI service: " + err.Error(),
+				})
+				return
+			}
+		}
+
 		c.JSON(http.StatusOK, gin.H{"status": "ok", "item": llmProviderDTO(*record)})
 	}
 }
 
-func handleDeleteLLMProvider(store *storepkg.Store) gin.HandlerFunc {
+func handleDeleteLLMProvider(store *storepkg.Store, aiService LLMProviderReloader) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		name := c.Param("name")
 		if name == "" {
@@ -372,6 +423,18 @@ func handleDeleteLLMProvider(store *storepkg.Store) gin.HandlerFunc {
 			return
 		}
 
+		// Remove provider from AI service
+		if aiService != nil {
+			if err := aiService.RemoveLLMProvider(name); err != nil {
+				// Log warning but don't fail the request - database is already updated
+				c.JSON(http.StatusOK, gin.H{
+					"status":  "ok",
+					"warning": "provider deleted but failed to reload AI service: " + err.Error(),
+				})
+				return
+			}
+		}
+
 		c.JSON(http.StatusOK, gin.H{"status": "ok"})
 	}
 }

internal/web/map_tile_proxy_routes_test.go

@@ -38,7 +38,7 @@ func TestMapTileProxyFetchesAndCaches(t *testing.T) {
 	}
 
 	cacheDir := t.TempDir()
-	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: cacheDir}, false, st, nil, nil, nil, nil, nil, nil)
+	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: cacheDir}, false, st, nil, nil, nil, nil, nil, nil, nil)
 
 	url := "/api/map/" + row.URLTemplateHash + "?x=1&y=2&z=3"
 	for i := 0; i < 2; i++ {
@@ -75,7 +75,7 @@ func TestMapTileProxyRejectsInvalidCoordinates(t *testing.T) {
 		t.Fatalf("CreateMapTileSource() error = %v", err)
 	}
 
-	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: t.TempDir()}, false, st, nil, nil, nil, nil, nil, nil)
+	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: t.TempDir()}, false, st, nil, nil, nil, nil, nil, nil, nil)
 
 	cases := []string{
 		"/api/map/" + row.URLTemplateHash + "?y=0&z=0",
@@ -106,7 +106,7 @@ func TestMapTileProxyUnknownAndDisabledSource(t *testing.T) {
 		t.Fatalf("CreateMapTileSource(proxy disabled) error = %v", err)
 	}
 
-	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: t.TempDir()}, false, st, nil, nil, nil, nil, nil, nil)
+	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: t.TempDir()}, false, st, nil, nil, nil, nil, nil, nil, nil)
 
 	cases := []string{
 		"/api/map/not-a-hash?x=0&y=0&z=0",
@@ -147,7 +147,7 @@ func TestMapTileProxyUpstreamStatus(t *testing.T) {
 		t.Fatalf("CreateMapTileSource(500) error = %v", err)
 	}
 
-	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: t.TempDir()}, false, st, nil, nil, nil, nil, nil, nil)
+	router := NewRouter(configpkg.WebConfig{StaticDir: t.TempDir(), MapTileCacheDir: t.TempDir()}, false, st, nil, nil, nil, nil, nil, nil, nil)
 
 	cases := []struct {
 		url  string

internal/web/web.go

@@ -27,10 +27,17 @@ import (
 	"meshtastic_mqtt_server/internal/webutil"
 )
 
-func NewHTTPServer(cfg configpkg.WebConfig, consoleLog bool, store *storepkg.Store, sessions *auth.Manager, mqttStatus MQTTStatusProvider, blocking *blockingpkg.Cache, forwarder mqttforwardpkg.Reloader, settings *rspkg.Cache, botSender botpkg.TextSender) *http.Server {
+// LLMProviderReloader is the interface for reloading LLM provider configuration
+type LLMProviderReloader interface {
+	ReloadLLMProvider(config interface{}) error
+	AddLLMProvider(config interface{}) error
+	RemoveLLMProvider(name string) error
+}
+
+func NewHTTPServer(cfg configpkg.WebConfig, consoleLog bool, store *storepkg.Store, sessions *auth.Manager, mqttStatus MQTTStatusProvider, blocking *blockingpkg.Cache, forwarder mqttforwardpkg.Reloader, settings *rspkg.Cache, botSender botpkg.TextSender, aiService LLMProviderReloader) *http.Server {
 	return &http.Server{
 		Addr:    net.JoinHostPort(cfg.Host, strconv.Itoa(cfg.Port)),
-		Handler: NewRouter(cfg, consoleLog, store, sessions, mqttStatus, blocking, forwarder, settings, botSender),
+		Handler: NewRouter(cfg, consoleLog, store, sessions, mqttStatus, blocking, forwarder, settings, botSender, aiService),
 	}
 }
 
@@ -60,7 +67,7 @@ func ServeUnixSocket(server *http.Server, socketPath string) error {
 	return server.Serve(listener)
 }
 
-func NewRouter(cfg configpkg.WebConfig, consoleLog bool, store *storepkg.Store, sessions *auth.Manager, mqttStatus MQTTStatusProvider, blocking *blockingpkg.Cache, forwarder mqttforwardpkg.Reloader, settings *rspkg.Cache, botSender botpkg.TextSender) *gin.Engine {
+func NewRouter(cfg configpkg.WebConfig, consoleLog bool, store *storepkg.Store, sessions *auth.Manager, mqttStatus MQTTStatusProvider, blocking *blockingpkg.Cache, forwarder mqttforwardpkg.Reloader, settings *rspkg.Cache, botSender botpkg.TextSender, aiService LLMProviderReloader) *gin.Engine {
 	r := gin.New()
 	if consoleLog {
 		r.Use(gin.Logger(), gin.Recovery())
@@ -69,7 +76,7 @@ func NewRouter(cfg configpkg.WebConfig, consoleLog bool, store *storepkg.Store,
 	}
 	api := r.Group("/api")
 	registerAPIRoutes(api, store, cfg.MapTileCacheDir)
-	registerAdminRoutes(api.Group("/admin"), store, sessions, mqttStatus, blocking, forwarder, settings, botSender)
+	registerAdminRoutes(api.Group("/admin"), store, sessions, mqttStatus, blocking, forwarder, settings, botSender, aiService)
 	registerStaticRoutes(r, cfg.StaticDir)
 	return r
 }
@@ -163,7 +170,7 @@ func registerAPIRoutes(r gin.IRouter, store *storepkg.Store, mapTileCacheDir str
 	})
 }
 
-func registerAdminRoutes(r gin.IRouter, store *storepkg.Store, sessions *auth.Manager, mqttStatus MQTTStatusProvider, blocking *blockingpkg.Cache, forwarder mqttforwardpkg.Reloader, settings *rspkg.Cache, botSender botpkg.TextSender) {
+func registerAdminRoutes(r gin.IRouter, store *storepkg.Store, sessions *auth.Manager, mqttStatus MQTTStatusProvider, blocking *blockingpkg.Cache, forwarder mqttforwardpkg.Reloader, settings *rspkg.Cache, botSender botpkg.TextSender, aiService LLMProviderReloader) {
 	type loginRequest struct {
 		Username string `json:"username"`
 		Password string `json:"password"`
@@ -230,7 +237,7 @@ func registerAdminRoutes(r gin.IRouter, store *storepkg.Store, sessions *auth.Ma
 	mappkg.RegisterAdminRoutes(protected, store)
 	helppkg.RegisterAdminRoutes(protected, store)
 	botpkg.RegisterRoutes(protected, store, botSender)
-	llmadminpkg.RegisterRoutes(protected, store)
+	llmadminpkg.RegisterRoutes(protected, store, aiService)
 	protected.GET("/me", func(c *gin.Context) {
 		claims := c.MustGet("admin_claims").(*auth.SessionClaims)
 		c.JSON(http.StatusOK, gin.H{"user": auth.AdminUserDTO{Username: claims.Username, Role: claims.Role}})

main.go

@@ -458,7 +458,7 @@ func run(cfg *configpkg.Config) error {
 			return err
 		}
 		mqttStatus := webpkg.MQTTRuntimeStatus{Server: server, Address: mqttAddr, TLS: cfg.MQTT.TLS.Enabled, Stats: messageStats, ClientStats: clientStats, DBQueue: dbQueue}
-		handler := webpkg.NewRouter(cfg.Web, cfg.ConsoleLog.Web, store, sessions, mqttStatus, blocking, forwardManager, settings, botSender)
+		handler := webpkg.NewRouter(cfg.Web, cfg.ConsoleLog.Web, store, sessions, mqttStatus, blocking, forwardManager, settings, botSender, aiService)
 		webAddresses := []string{}
 		if cfg.Web.PortEnabled {
 			httpServer := &http.Server{