feat: 更新主流大模型供应商目录

- 按云服务、Coding Plan、API 网关和本地模型分组

- 新增兼容模型发现与供应商协议校验

backend/pkg/agentcli/llm/provider_compat_test.go

@@ -0,0 +1,39 @@
+package llm
+
+import "testing"
+
+func TestApplyReasoningParamsForModernOpenAIModels(t *testing.T) {
+	payload := openaiRequest{
+		Model:       "openai/gpt-5.4",
+		Temperature: 0.7,
+		MaxTokens:   8192,
+	}
+	applyReasoningParams(&payload, true)
+
+	if payload.Temperature != 0 || payload.MaxTokens != 0 {
+		t.Fatalf("unsupported parameters were not cleared: %+v", payload)
+	}
+	if payload.MaxCompletionTokens != 8192 || payload.ReasoningEffort != "medium" {
+		t.Fatalf("modern OpenAI parameters were not applied: %+v", payload)
+	}
+}
+
+func TestApplyReasoningParamsWithoutReasoningEffort(t *testing.T) {
+	payload := openaiRequest{Model: "gpt-5.4-mini", Temperature: 0.7, MaxTokens: 4096}
+	applyReasoningParams(&payload, false)
+
+	if payload.MaxCompletionTokens != 4096 || payload.ReasoningEffort != "" {
+		t.Fatalf("model compatibility parameters are incorrect: %+v", payload)
+	}
+}
+
+func TestAnthropicThinkingModels(t *testing.T) {
+	for _, model := range []string{"claude-3-7-sonnet", "claude-sonnet-4-6", "claude-opus-4-8", "claude-sonnet-5", "claude-fable-5"} {
+		if !isAnthropicThinkingModel(model) {
+			t.Fatalf("%q should support thinking parameters", model)
+		}
+	}
+	if isAnthropicThinkingModel("claude-haiku-4-5") {
+		t.Fatal("Claude Haiku should not receive thinking parameters")
+	}
+}