feat: 模型配置支持删除，岗位行动规划对接任务系统字典与批量新增 Skill

模型管理新增 DELETE 接口与前端删除能力（支持含斜杠的模型名）；行动规划改为 9 字段 JSON，prepare 传入 taskId/字典并绑定 position-roundtable-action-create Skill。

Co-authored-by: Cursor <cursoragent@cursor.com>

offline-backend-20260512/backend/tests/test_model_management.py

@@ -6,6 +6,7 @@ from types import SimpleNamespace
 
 import pytest
 import yaml
+from starlette.routing import Match
 
 from app.gateway.routers import model_management as router
 
@@ -53,6 +54,64 @@ def test_connection_error_redaction_hides_literal_and_resolved_keys() -> None:
     assert router._redact_text(message, ["raw-secret", "resolved-secret"]) == "provider rejected *** and ***"
 
 
+def test_model_mutation_routes_accept_names_with_slashes() -> None:
+    for method in ("PUT", "DELETE"):
+        route = next(
+            item
+            for item in router.router.routes
+            if getattr(item, "methods", set()) == {method} and getattr(item, "path", "") == "/api/admin/models/{model_name:path}"
+        )
+        match, child_scope = route.matches(
+            {
+                "type": "http",
+                "method": method,
+                "path": "/api/admin/models/zai-org/GLM-5-FP8",
+            }
+        )
+        assert match is Match.FULL
+        assert child_scope["path_params"] == {"model_name": "zai-org/GLM-5-FP8"}
+
+
+@pytest.mark.asyncio
+async def test_delete_model_configuration_removes_matching_model_and_activates_config(
+    tmp_path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    config_path = tmp_path / "config.yaml"
+    config_path.write_text(
+        """models:
+  - name: zai-org/GLM-5-FP8
+    use: langchain_openai:ChatOpenAI
+    model: GLM-5-FP8
+  - name: keep-me
+    use: langchain_openai:ChatOpenAI
+    model: keep-me
+""",
+        encoding="utf-8",
+    )
+    saved: dict[str, object] = {}
+
+    async def save_models(_request, raw_before: str, models: list[dict[str, object]]) -> list[dict[str, object]]:
+        saved["raw_before"] = raw_before
+        saved["models"] = models
+        return models
+
+    monkeypatch.setattr(router, "_resolve_config_path", lambda: config_path)
+    monkeypatch.setattr(router, "_save_models", save_models)
+    request = SimpleNamespace(state=SimpleNamespace(user=SimpleNamespace(system_role="admin")))
+
+    await router.delete_model_configuration("zai-org/GLM-5-FP8", request)
+
+    assert "zai-org/GLM-5-FP8" in str(saved["raw_before"])
+    assert saved["models"] == [
+        {
+            "name": "keep-me",
+            "use": "langchain_openai:ChatOpenAI",
+            "model": "keep-me",
+        }
+    ]
+
+
 @pytest.mark.asyncio
 async def test_connection_test_uses_one_minimal_prompt_without_writing_config(
     tmp_path,