feat: 扩展 Rust gateway 全功能模块，新增 billing/crypto/wallet crate 及完整数据层

- 新增 aether-billing、aether-crypto、aether-wallet 独立 crate
- aether-data 扩展 repository 层：announcements、auth_modules、billing、
  candidate_selection、gemini_file_mappings、global_models、management_tokens、
  oauth_providers、proxy_nodes、quota、users、wallet 等模块
- aether-gateway 新增 api/auth/billing/control/middleware/scheduler/usage/
  video_tasks/hooks/maintenance/model_fetch/provider_transport 等功能模块
- 重构 executor decision 和 gateway state 为模块目录结构
- 新增 gateway router、frontdoor 路由层及对应测试
- Python 侧 API 路由重构，新增 compat/support 模块
- 前端 Logo 组件更新及 Provider 管理页面调整

tests/api/public/test_models_shell.py

@@ -0,0 +1,130 @@
+from __future__ import annotations
+
+from typing import Any
+from unittest.mock import MagicMock
+
+import pytest
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from src.database import get_db
+
+
+def _build_app(
+    monkeypatch: pytest.MonkeyPatch,
+    *,
+    pipeline_result: Any,
+) -> tuple[TestClient, list[dict[str, Any]]]:
+    from src.api.public import models as mod
+
+    app = FastAPI()
+    app.include_router(mod.router)
+    app.dependency_overrides[get_db] = lambda: MagicMock()
+
+    calls: list[dict[str, Any]] = []
+
+    async def _fake_pipeline_run(
+        *,
+        adapter: Any,
+        http_request: object,
+        db: object,
+        mode: object,
+        api_format_hint: str | None = None,
+        path_params: dict[str, Any] | None = None,
+    ) -> Any:
+        del http_request, db, api_format_hint, path_params
+        calls.append(
+            {
+                "adapter_type": type(adapter).__name__,
+                "mode": getattr(mode, "value", mode),
+                "adapter_state": dict(getattr(adapter, "__dict__", {})),
+            }
+        )
+        return pipeline_result
+
+    monkeypatch.setattr(mod.pipeline, "run", _fake_pipeline_run)
+    return TestClient(app), calls
+
+
+def test_public_openai_models_route_is_pipeline_shell(monkeypatch: pytest.MonkeyPatch) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"object": "list", "data": []})
+
+    response = client.get("/v1/models?after_id=model-a&limit=12")
+
+    assert response.status_code == 200
+    assert response.json() == {"object": "list", "data": []}
+    assert calls == [
+        {
+            "adapter_type": "PublicModelsListAdapter",
+            "mode": "public",
+            "adapter_state": {
+                "before_id": None,
+                "after_id": "model-a",
+                "limit": 12,
+                "page_size": 50,
+                "page_token": None,
+            },
+        }
+    ]
+
+
+def test_public_model_detail_route_is_pipeline_shell(monkeypatch: pytest.MonkeyPatch) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"id": "gpt-5"})
+
+    response = client.get("/v1/models/gpt-5")
+
+    assert response.status_code == 200
+    assert response.json() == {"id": "gpt-5"}
+    assert calls == [
+        {
+            "adapter_type": "PublicModelDetailAdapter",
+            "mode": "public",
+            "adapter_state": {
+                "model_id": "gpt-5",
+                "force_gemini_name": False,
+            },
+        }
+    ]
+
+
+def test_public_gemini_models_route_is_pipeline_shell(monkeypatch: pytest.MonkeyPatch) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"models": []})
+
+    response = client.get("/v1beta/models?pageSize=25&pageToken=next-1")
+
+    assert response.status_code == 200
+    assert response.json() == {"models": []}
+    assert calls == [
+        {
+            "adapter_type": "PublicModelsListAdapter",
+            "mode": "public",
+            "adapter_state": {
+                "before_id": None,
+                "after_id": None,
+                "limit": 20,
+                "page_size": 25,
+                "page_token": "next-1",
+            },
+        }
+    ]
+
+
+def test_public_gemini_model_detail_route_is_pipeline_shell(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"name": "models/gemini-2.5-pro"})
+
+    response = client.get("/v1beta/models/models/gemini-2.5-pro")
+
+    assert response.status_code == 200
+    assert response.json() == {"name": "models/gemini-2.5-pro"}
+    assert calls == [
+        {
+            "adapter_type": "PublicModelDetailAdapter",
+            "mode": "public",
+            "adapter_state": {
+                "model_id": "models/gemini-2.5-pro",
+                "force_gemini_name": True,
+            },
+        }
+    ]