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_gemini_files_shell.py

@@ -0,0 +1,133 @@
+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 gemini_files 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_gemini_files_upload_route_is_pipeline_shell(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"file": {"name": "files/1"}})
+
+    response = client.post("/upload/v1beta/files")
+
+    assert response.status_code == 200
+    assert response.json() == {"file": {"name": "files/1"}}
+    assert calls == [
+        {
+            "adapter_type": "PublicGeminiFilesUploadAdapter",
+            "mode": "public",
+            "adapter_state": {},
+        }
+    ]
+
+
+def test_gemini_files_list_route_is_pipeline_shell(monkeypatch: pytest.MonkeyPatch) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"files": []})
+
+    response = client.get("/v1beta/files?pageSize=20&pageToken=next-1")
+
+    assert response.status_code == 200
+    assert response.json() == {"files": []}
+    assert calls == [
+        {
+            "adapter_type": "PublicGeminiFilesListAdapter",
+            "mode": "public",
+            "adapter_state": {
+                "page_size": 20,
+                "page_token": "next-1",
+            },
+        }
+    ]
+
+
+def test_gemini_files_download_route_is_pipeline_shell(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"download": "ok"})
+
+    response = client.get("/v1beta/files/file-1:download?alt=media")
+
+    assert response.status_code == 200
+    assert response.json() == {"download": "ok"}
+    assert calls == [
+        {
+            "adapter_type": "PublicGeminiFilesDownloadAdapter",
+            "mode": "public",
+            "adapter_state": {"file_id": "file-1"},
+        }
+    ]
+
+
+def test_gemini_files_get_route_is_pipeline_shell(monkeypatch: pytest.MonkeyPatch) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"name": "files/file-1"})
+
+    response = client.get("/v1beta/files/file-1")
+
+    assert response.status_code == 200
+    assert response.json() == {"name": "files/file-1"}
+    assert calls == [
+        {
+            "adapter_type": "PublicGeminiFilesGetAdapter",
+            "mode": "public",
+            "adapter_state": {"file_name": "file-1"},
+        }
+    ]
+
+
+def test_gemini_files_delete_route_is_pipeline_shell(monkeypatch: pytest.MonkeyPatch) -> None:
+    client, calls = _build_app(monkeypatch, pipeline_result={"deleted": True})
+
+    response = client.delete("/v1beta/files/file-1")
+
+    assert response.status_code == 200
+    assert response.json() == {"deleted": True}
+    assert calls == [
+        {
+            "adapter_type": "PublicGeminiFilesDeleteAdapter",
+            "mode": "public",
+            "adapter_state": {"file_name": "file-1"},
+        }
+    ]