feat: 报销审批流重构与管家计划全链路贯通

- 重构报销状态注册表、审批流路由与平台风险标记
- 完善管家意图规划器与模型计划构建器全链路
- 新增 OCR Worker 脚本、数据库会话管理与通知状态
- 优化文档中心、日志视图、预算中心与员工管理交互
- 增强工作台摘要、图标资源与全局主题样式
- 补充审批路由、状态注册、OCR 服务与管家规划器测试覆盖

server/tests/test_ocr_service.py

@@ -179,6 +179,64 @@ def test_ocr_service_converts_pdf_to_images_and_returns_image_preview(
     assert recognized.lines[1].page_index == 1
 
 
+def test_ocr_service_reuses_cached_document_for_same_content(
+    monkeypatch,
+    tmp_path: Path,
+) -> None:
+    calls = {"count": 0}
+
+    def fake_invoke_worker(
+        self,
+        *,
+        python_bin: str,
+        worker_path: str,
+        input_paths: list[Path],
+    ) -> dict:
+        calls["count"] += 1
+        return {
+            "engine": "paddleocr_mobile",
+            "model": "PP-OCRv5_mobile",
+            "documents": [
+                {
+                    "input_path": str(input_paths[0]),
+                    "engine": "paddleocr_mobile",
+                    "model": "PP-OCRv5_mobile",
+                    "text": "增值税电子发票 金额 20 元",
+                    "summary": "增值税电子发票，金额 20 元。",
+                    "avg_score": 0.97,
+                    "line_count": 1,
+                    "page_count": 1,
+                    "warnings": [],
+                    "lines": [
+                        {
+                            "text": "增值税电子发票 金额 20 元",
+                            "score": 0.97,
+                            "box": [[1, 2], [10, 2], [10, 8], [1, 8]],
+                        }
+                    ],
+                }
+            ],
+        }
+
+    monkeypatch.setenv("STORAGE_ROOT_DIR", str(tmp_path / "storage"))
+    monkeypatch.setattr(OcrService, "_resolve_python_bin", lambda self: "python")
+    monkeypatch.setattr(OcrService, "_resolve_worker_path", lambda self: "worker.py")
+    monkeypatch.setattr(OcrService, "_invoke_worker", fake_invoke_worker)
+    OcrService._result_cache.clear()
+    get_settings.cache_clear()
+    try:
+        first = OcrService().recognize_files([("first.png", b"same-image", "image/png")])
+        second = OcrService().recognize_files([("second.png", b"same-image", "image/png")])
+    finally:
+        OcrService._result_cache.clear()
+        get_settings.cache_clear()
+
+    assert calls["count"] == 1
+    assert first.documents[0].filename == "first.png"
+    assert second.documents[0].filename == "second.png"
+    assert second.documents[0].summary == first.documents[0].summary
+
+
 def test_ocr_service_prefers_pdf_text_layer_when_rendered_ocr_is_placeholder_heavy(
     monkeypatch,
     tmp_path: Path,