feat(provider): add Alibaba Coding Plan and regional Qwen endpoints (#1748)

* feat(provider): add Alibaba Coding Plan and regional Qwen endpoints

- Add Alibaba Coding Plan provider with OpenAI-compatible endpoint
  (https://coding-intl.dashscope.aliyuncs.com/v1)
- Add Coding Plan Anthropic-compatible endpoint
  (https://coding-intl.dashscope.aliyuncs.com/apps/anthropic)
- Add regional Qwen endpoints (qwen-intl, qwen-us)
- Add provider aliases: coding-plan, alibaba-coding, qwen-coding
- Normalize provider names for coding-plan variants

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* fix(provider): add reviewer-requested fixes for Alibaba Coding Plan

- Add qwen-international, dashscope-intl, dashscope-us aliases to switch case
- Add coding-plan-anthropic case with anthropicmessages.NewProviderWithTimeout
- Add alibaba-coding-anthropic -> coding-plan-anthropic normalization
- Add qwen-international -> qwen-intl and dashscope-us -> qwen-us normalization

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* test(provider): add tests for Alibaba Coding Plan protocol aliases

- Add tests for qwen-international, dashscope-intl, dashscope-us aliases
- Add tests for coding-plan-anthropic and alibaba-coding-anthropic
- Add getDefaultAPIBase tests for all new aliases
- Add normalization tests for new provider aliases

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

---------

Co-authored-by: Claude <noreply@anthropic.com>

pkg/providers/factory_provider.go

@@ -115,8 +115,9 @@ func CreateProviderFromConfig(cfg *config.ModelConfig) (LLMProvider, string, err
 
 	case "litellm", "openrouter", "groq", "zhipu", "gemini", "nvidia",
 		"ollama", "moonshot", "shengsuanyun", "deepseek", "cerebras",
-		"vivgrid", "volcengine", "vllm", "qwen", "mistral", "avian",
+		"vivgrid", "volcengine", "vllm", "qwen", "qwen-intl", "qwen-international", "dashscope-intl",
-		"minimax", "longcat", "modelscope", "novita":
+		"qwen-us", "dashscope-us", "mistral", "avian", "minimax", "longcat", "modelscope", "novita",
+		"coding-plan", "alibaba-coding", "qwen-coding":
 		// All other OpenAI-compatible HTTP providers
 		if cfg.APIKey == "" && cfg.APIBase == "" {
 			return nil, "", fmt.Errorf("api_key or api_base is required for HTTP-based protocol %q", protocol)
@@ -173,6 +174,21 @@ func CreateProviderFromConfig(cfg *config.ModelConfig) (LLMProvider, string, err
 			cfg.RequestTimeout,
 		), modelID, nil
 
+	case "coding-plan-anthropic", "alibaba-coding-anthropic":
+		// Alibaba Coding Plan with Anthropic-compatible API
+		apiBase := cfg.APIBase
+		if apiBase == "" {
+			apiBase = getDefaultAPIBase(protocol)
+		}
+		if cfg.APIKey == "" {
+			return nil, "", fmt.Errorf("api_key is required for %q protocol (model: %s)", protocol, cfg.Model)
+		}
+		return anthropicmessages.NewProviderWithTimeout(
+			cfg.APIKey,
+			apiBase,
+			cfg.RequestTimeout,
+		), modelID, nil
+
 	case "antigravity":
 		return NewAntigravityProvider(), modelID, nil
 
@@ -245,6 +261,14 @@ func getDefaultAPIBase(protocol string) string {
 		return "https://ark.cn-beijing.volces.com/api/v3"
 	case "qwen":
 		return "https://dashscope.aliyuncs.com/compatible-mode/v1"
+	case "qwen-intl", "qwen-international", "dashscope-intl":
+		return "https://dashscope-intl.aliyuncs.com/compatible-mode/v1"
+	case "qwen-us", "dashscope-us":
+		return "https://dashscope-us.aliyuncs.com/compatible-mode/v1"
+	case "coding-plan", "alibaba-coding", "qwen-coding":
+		return "https://coding-intl.dashscope.aliyuncs.com/v1"
+	case "coding-plan-anthropic", "alibaba-coding-anthropic":
+		return "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic"
 	case "vllm":
 		return "http://localhost:8000/v1"
 	case "mistral":

pkg/providers/factory_provider_test.go

@@ -472,3 +472,134 @@ func TestCreateProviderFromConfig_AzureMissingAPIBase(t *testing.T) {
 		t.Fatal("CreateProviderFromConfig() expected error for missing API base")
 	}
 }
+
+func TestCreateProviderFromConfig_QwenInternationalAlias(t *testing.T) {
+	tests := []struct {
+		name     string
+		protocol string
+	}{
+		{"qwen-international", "qwen-international"},
+		{"dashscope-intl", "dashscope-intl"},
+		{"qwen-intl", "qwen-intl"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := &config.ModelConfig{
+				ModelName: "test-" + tt.protocol,
+				Model:     tt.protocol + "/qwen-max",
+				APIKey:    "test-key",
+			}
+
+			provider, modelID, err := CreateProviderFromConfig(cfg)
+			if err != nil {
+				t.Fatalf("CreateProviderFromConfig() error = %v", err)
+			}
+			if provider == nil {
+				t.Fatal("CreateProviderFromConfig() returned nil provider")
+			}
+			if modelID != "qwen-max" {
+				t.Errorf("modelID = %q, want %q", modelID, "qwen-max")
+			}
+			if _, ok := provider.(*HTTPProvider); !ok {
+				t.Fatalf("expected *HTTPProvider, got %T", provider)
+			}
+		})
+	}
+}
+
+func TestCreateProviderFromConfig_QwenUSAlias(t *testing.T) {
+	tests := []struct {
+		name     string
+		protocol string
+	}{
+		{"qwen-us", "qwen-us"},
+		{"dashscope-us", "dashscope-us"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := &config.ModelConfig{
+				ModelName: "test-" + tt.protocol,
+				Model:     tt.protocol + "/qwen-max",
+				APIKey:    "test-key",
+			}
+
+			provider, modelID, err := CreateProviderFromConfig(cfg)
+			if err != nil {
+				t.Fatalf("CreateProviderFromConfig() error = %v", err)
+			}
+			if provider == nil {
+				t.Fatal("CreateProviderFromConfig() returned nil provider")
+			}
+			if modelID != "qwen-max" {
+				t.Errorf("modelID = %q, want %q", modelID, "qwen-max")
+			}
+			if _, ok := provider.(*HTTPProvider); !ok {
+				t.Fatalf("expected *HTTPProvider, got %T", provider)
+			}
+		})
+	}
+}
+
+func TestCreateProviderFromConfig_CodingPlanAnthropic(t *testing.T) {
+	tests := []struct {
+		name     string
+		protocol string
+	}{
+		{"coding-plan-anthropic", "coding-plan-anthropic"},
+		{"alibaba-coding-anthropic", "alibaba-coding-anthropic"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := &config.ModelConfig{
+				ModelName: "test-" + tt.protocol,
+				Model:     tt.protocol + "/claude-sonnet-4-20250514",
+				APIKey:    "test-key",
+			}
+
+			provider, modelID, err := CreateProviderFromConfig(cfg)
+			if err != nil {
+				t.Fatalf("CreateProviderFromConfig() error = %v", err)
+			}
+			if provider == nil {
+				t.Fatal("CreateProviderFromConfig() returned nil provider")
+			}
+			if modelID != "claude-sonnet-4-20250514" {
+				t.Errorf("modelID = %q, want %q", modelID, "claude-sonnet-4-20250514")
+			}
+			// coding-plan-anthropic uses Anthropic Messages provider
+			// Verify it's the anthropic messages provider by checking interface
+			var _ LLMProvider = provider
+		})
+	}
+}
+
+func TestGetDefaultAPIBase_CodingPlanAnthropic(t *testing.T) {
+	expectedURL := "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic"
+	if got := getDefaultAPIBase("coding-plan-anthropic"); got != expectedURL {
+		t.Fatalf("getDefaultAPIBase(%q) = %q, want %q", "coding-plan-anthropic", got, expectedURL)
+	}
+	if got := getDefaultAPIBase("alibaba-coding-anthropic"); got != expectedURL {
+		t.Fatalf("getDefaultAPIBase(%q) = %q, want %q", "alibaba-coding-anthropic", got, expectedURL)
+	}
+}
+
+func TestGetDefaultAPIBase_QwenIntlAliases(t *testing.T) {
+	expectedURL := "https://dashscope-intl.aliyuncs.com/compatible-mode/v1"
+	for _, protocol := range []string{"qwen-intl", "qwen-international", "dashscope-intl"} {
+		if got := getDefaultAPIBase(protocol); got != expectedURL {
+			t.Fatalf("getDefaultAPIBase(%q) = %q, want %q", protocol, got, expectedURL)
+		}
+	}
+}
+
+func TestGetDefaultAPIBase_QwenUSAliases(t *testing.T) {
+	expectedURL := "https://dashscope-us.aliyuncs.com/compatible-mode/v1"
+	for _, protocol := range []string{"qwen-us", "dashscope-us"} {
+		if got := getDefaultAPIBase(protocol); got != expectedURL {
+			t.Fatalf("getDefaultAPIBase(%q) = %q, want %q", protocol, got, expectedURL)
+		}
+	}
+}

pkg/providers/model_ref.go

@@ -53,6 +53,14 @@ func NormalizeProvider(provider string) string {
 		return "zhipu"
 	case "google":
 		return "gemini"
+	case "alibaba-coding", "qwen-coding":
+		return "coding-plan"
+	case "alibaba-coding-anthropic":
+		return "coding-plan-anthropic"
+	case "qwen-international", "dashscope-intl":
+		return "qwen-intl"
+	case "dashscope-us":
+		return "qwen-us"
 	}
 
 	return p

pkg/providers/model_ref_test.go

@@ -73,6 +73,14 @@ func TestNormalizeProvider(t *testing.T) {
 		{"glm", "zhipu"},
 		{"google", "gemini"},
 		{"groq", "groq"},
+		// Alibaba Coding Plan aliases
+		{"alibaba-coding", "coding-plan"},
+		{"qwen-coding", "coding-plan"},
+		{"alibaba-coding-anthropic", "coding-plan-anthropic"},
+		// Qwen international aliases
+		{"qwen-international", "qwen-intl"},
+		{"dashscope-intl", "qwen-intl"},
+		{"dashscope-us", "qwen-us"},
 		{"", ""},
 	}