feat(codex): 拆分openai:compact为独立端点，简化Codex请求为透传模式

- 新增openai:compact端点类型(EndpointKind.COMPACT)，独立于openai:cli
- OpenAICompactAdapter继承OpenAICliAdapter，自动标记compact模式
- Codex请求补丁改为纯透传：仅清理内部标记，不再修改客户端payload
- stream_policy支持openai:compact独立策略，compact端点移除stream字段
- candidate_builder支持compact回退到cli端点
- auth_type: vertex_ai重命名为service_account，保持向后兼容
- Vertex Provider新增api_formats与auth_type组合校验
- KeyAllowedModels对话框改为从Provider获取模型，展示provider_model_name
- Dialog内Select组件自动禁用Portal，修复层级遮挡问题
- 新增Codex compact端点回填迁移脚本

src/api/admin/models/routing.py

@@ -422,6 +422,7 @@ class AdminGetModelRoutingPreviewAdapter(AdminApiAdapter):
             preferred_order = [
                 "openai:chat",
                 "openai:cli",
+                "openai:compact",
                 "openai:video",
                 "claude:chat",
                 "claude:cli",

src/api/admin/system.py

@@ -838,15 +838,20 @@ class AdminGetApiFormatsAdapter(AdminApiAdapter):
         def _label_for(sig: str) -> str:
             fam, kind = (sig.split(":", 1) + [""])[:2]
             fam_title = {"claude": "Claude", "openai": "OpenAI", "gemini": "Gemini"}.get(fam, fam)
-            kind_title = {"chat": "Chat", "cli": "CLI", "video": "Video", "image": "Image"}.get(
-                kind, kind
-            )
+            kind_title = {
+                "chat": "Chat",
+                "cli": "CLI",
+                "compact": "Compact",
+                "video": "Video",
+                "image": "Image",
+            }.get(kind, kind)
             return f"{fam_title} {kind_title}".strip()
 
         endpoint_defs = list_endpoint_definitions()
         preferred_order = [
             "openai:chat",
             "openai:cli",
+            "openai:compact",
             "openai:video",
             "claude:chat",
             "claude:cli",

src/api/handlers/openai_cli/__init__.py

@@ -2,10 +2,11 @@
 OpenAI CLI 透传处理器
 """
 
-from src.api.handlers.openai_cli.adapter import OpenAICliAdapter
+from src.api.handlers.openai_cli.adapter import OpenAICliAdapter, OpenAICompactAdapter
 from src.api.handlers.openai_cli.handler import OpenAICliMessageHandler
 
 __all__ = [
     "OpenAICliAdapter",
+    "OpenAICompactAdapter",
     "OpenAICliMessageHandler",
 ]

src/api/handlers/openai_cli/adapter.py

@@ -15,7 +15,7 @@ from src.api.handlers.base.cli_adapter_base import CliAdapterBase, register_cli_
 from src.api.handlers.base.cli_handler_base import CliMessageHandlerBase
 from src.api.handlers.openai.adapter import OpenAIChatAdapter
 from src.config.settings import config
-from src.core.api_format import ApiFamily
+from src.core.api_format import ApiFamily, EndpointKind
 from src.utils.url_utils import is_codex_url
 
 
@@ -166,3 +166,18 @@ class OpenAICliAdapter(CliAdapterBase):
 
 
 __all__ = ["OpenAICliAdapter"]
+
+
+@register_cli_adapter
+class OpenAICompactAdapter(OpenAICliAdapter):
+    """OpenAI Compact Responses adapter (/v1/responses/compact)."""
+
+    FORMAT_ID = "openai:compact"
+    ENDPOINT_KIND = EndpointKind.COMPACT
+    name = "openai.compact"
+
+    def __init__(self, allowed_api_formats: list[str] | None = None):
+        super().__init__(allowed_api_formats=allowed_api_formats, compact=True)
+
+
+__all__.append("OpenAICompactAdapter")

src/api/public/models.py

@@ -36,7 +36,7 @@ router = APIRouter(tags=["System Catalog"])
 
 # 各格式对应的 API 格式列表（包括对应的 CLI 格式）
 _CLAUDE_FORMATS = ["claude:chat", "claude:cli"]
-_OPENAI_FORMATS = ["openai:chat", "openai:cli"]
+_OPENAI_FORMATS = ["openai:chat", "openai:cli", "openai:compact"]
 _GEMINI_FORMATS = ["gemini:chat", "gemini:cli"]
 
 # 所有格式（用于格式转换时的查询）

src/api/public/openai.py

@@ -15,7 +15,7 @@ from sqlalchemy.orm import Session
 
 from src.api.base.pipeline import ApiRequestPipeline
 from src.api.handlers.openai import OpenAIChatAdapter
-from src.api.handlers.openai_cli import OpenAICliAdapter
+from src.api.handlers.openai_cli import OpenAICliAdapter, OpenAICompactAdapter
 from src.database import get_db
 
 router = APIRouter(tags=["OpenAI API"])
@@ -68,7 +68,7 @@ async def create_responses_compact(
 
     **认证方式**: Bearer Token（API Key 或 JWT Token）
     """
-    adapter = OpenAICliAdapter(compact=True)
+    adapter = OpenAICompactAdapter()
     return await pipeline.run(
         adapter=adapter,
         http_request=http_request,

src/api/user_me/routes.py

@@ -1263,6 +1263,7 @@ class ListAvailableModelsAdapter(AuthenticatedApiAdapter):
         all_formats = [
             "openai:chat",
             "openai:cli",
+            "openai:compact",
             "claude:chat",
             "claude:cli",
             "gemini:chat",