feat（provider）:增加自定义chat端口功能

docs/guides/configuration.md

@@ -39,6 +39,10 @@ shell: bash
 tool_timeout_sec: 20
 runtime:
   max_no_progress_streak: 3
+  max_repeat_cycle_streak: 3
+  assets:
+    max_session_asset_bytes: 20971520
+    max_session_assets_total_bytes: 20971520
 
 tools:
   webfetch:
@@ -90,6 +94,9 @@ context:
 | 字段 | 说明 |
 |------|------|
 | `runtime.max_no_progress_streak` | 连续”无进展”轮次熔断阈值，默认 `3`；streak 达到 `limit-1`（默认第 2 轮）时向模型注入一次系统级纠偏提示，达到 `limit`（默认第 3 轮）时终止运行 |
+| `runtime.max_repeat_cycle_streak` | 连续“重复调用同一工具参数”轮次熔断阈值，默认 `3`；达到阈值后终止运行 |
+| `runtime.assets.max_session_asset_bytes` | 单个 `session_asset` 最大原始字节数，默认 `20971520`（20 MiB）；`0` 或未配置时回退默认值 |
+| `runtime.assets.max_session_assets_total_bytes` | 单次请求可携带的 `session_asset` 原始总字节上限，默认 `20971520`（20 MiB）；`0` 或未配置时回退默认值 |
 
 ### `tools` 字段
 
@@ -141,9 +148,9 @@ name: company-gateway
 driver: openaicompat
 api_key_env: COMPANY_GATEWAY_API_KEY
 model_source: discover
-openai_compatible:
-  base_url: https://llm.example.com/v1
-  api_style: chat_completions
+base_url: https://llm.example.com/v1
+chat_endpoint_path: /chat/completions
+discovery_endpoint_path: /models
 ```
 
 `model_source` 语义如下：
@@ -158,8 +165,8 @@ name: company-gateway-manual
 driver: openaicompat
 api_key_env: COMPANY_GATEWAY_API_KEY
 model_source: manual
-openai_compatible:
-  base_url: https://llm.example.com/v1
+base_url: https://llm.example.com/v1
+chat_endpoint_path: /chat/completions
 models:
   - id: gpt-4o-mini
     name: GPT-4o Mini
@@ -171,6 +178,17 @@ models:
 - 老配置未声明 `model_source` 时，默认按 `discover` 处理。
 - `manual` 模式下必须提供 `models`，否则会在加载/创建阶段报错。
 - `manual` 模式会忽略 discovery 相关字段（如 `discovery_endpoint_path`、`discovery_response_profile`）。
+- 旧版嵌套字段（如 `openai_compatible/gemini/anthropic`）在严格校验下会被拒绝，升级前请先执行迁移脚本：
+
+```bash
+go run ./scripts/migrate_provider_yaml.go --base-dir ~/.neocode
+```
+
+仅预览不落盘：
+
+```bash
+go run ./scripts/migrate_provider_yaml.go --base-dir ~/.neocode --dry-run
+```
 
 ## Auto Compact 失败与校验补充
 

internal/app/bootstrap.go

@@ -67,7 +67,11 @@ func newMemoExtractorAdapter(
 		}
 
 		generator := textGenAdapter(func(ctx context.Context, prompt string, msgs []providertypes.Message) (string, error) {
-			p, err := factory.Build(ctx, resolved.ToRuntimeConfig())
+			runtimeConfig, err := resolved.ToRuntimeConfig()
+			if err != nil {
+				return "", err
+			}
+			p, err := factory.Build(ctx, runtimeConfig)
 			if err != nil {
 				return "", err
 			}

internal/config/config_test.go

@@ -26,7 +26,6 @@ func testDefaultProviderConfig() ProviderConfig {
 		BaseURL:   testBaseURL,
 		Model:     testModel,
 		APIKeyEnv: testAPIKeyEnv,
-		APIStyle:  providerpkg.OpenAICompatibleAPIStyleChatCompletions,
 		Source:    ProviderSourceBuiltin,
 	}
 }
@@ -910,15 +909,13 @@ func TestAssembleProvidersRejectsIdenticalDuplicateCustomProviderNames(t *testin
 			Driver:    "openaicompat",
 			BaseURL:   "https://example.com/v1",
 			APIKeyEnv: "COMPANY_GATEWAY_API_KEY",
-			APIStyle:  "responses",
 			Source:    ProviderSourceCustom,
 		},
 		{
 			Name:      "company-gateway",
 			Driver:    "openaicompat",
 			BaseURL:   "https://example.com/v1",
 			APIKeyEnv: "COMPANY_GATEWAY_API_KEY",
-			APIStyle:  "responses",
 			Source:    ProviderSourceCustom,
 		},
 	}
@@ -1913,19 +1910,19 @@ func TestToRuntimeConfigMapsAllFields(t *testing.T) {
 
 	resolved := ResolvedProviderConfig{
 		ProviderConfig: ProviderConfig{
-			Name:           "test-provider",
-			Driver:         "gemini",
-			BaseURL:        "https://generativelanguage.googleapis.com/v1beta/openai",
-			Model:          "gemini-2.5-flash",
-			APIKeyEnv:      "TEST_ENV_KEY",
-			APIStyle:       "responses",
-			DeploymentMode: "vertex",
-			APIVersion:     "v1beta",
+			Name:      "test-provider",
+			Driver:    "gemini",
+			BaseURL:   "https://generativelanguage.googleapis.com/v1beta/openai",
+			Model:     "gemini-2.5-flash",
+			APIKeyEnv: "TEST_ENV_KEY",
 		},
 		APIKey: "resolved-secret-key",
 	}
 
-	got := resolved.ToRuntimeConfig()
+	got, err := resolved.ToRuntimeConfig()
+	if err != nil {
+		t.Fatalf("ToRuntimeConfig() error = %v", err)
+	}
 	if got.Name != "test-provider" {
 		t.Fatalf("expected Name=test-provider, got %q", got.Name)
 	}
@@ -1938,12 +1935,6 @@ func TestToRuntimeConfigMapsAllFields(t *testing.T) {
 	if got.APIKey != "resolved-secret-key" {
 		t.Fatalf("expected APIKey=resolved-secret-key, got %q", got.APIKey)
 	}
-	if got.DeploymentMode != "vertex" {
-		t.Fatalf("expected DeploymentMode=vertex, got %q", got.DeploymentMode)
-	}
-	if got.APIVersion != "v1beta" {
-		t.Fatalf("expected APIVersion=v1beta, got %q", got.APIVersion)
-	}
 }
 
 func TestLoaderLoadWithCanceledContext(t *testing.T) {