feat: implement new layout components and routing structure

- Added HeaderLayout component for the application header.
- Introduced KeepAliveViewport for managing tab states and rendering.
- Created TabNav for tab navigation with animated indicator.
- Removed old Tabs component in favor of new layout structure.
- Updated routing with AppRouter and defined appTabs for navigation.
- Enhanced theme context to manage dark mode styles.
- Added new UI components: Badge, Button, Separator, and Tabs.
- Refactored pages to utilize new layout components and improve responsiveness.
- Updated global styles for better theming and layout consistency.
- Introduced TypeScript path aliases for cleaner imports.

backend/data/documents.json

@@ -381,5 +381,41 @@
       "processing_stage": "indexed",
       "index_collection": "regulations_dense_1024_v1"
     }
+  },
+  "52bd970f": {
+    "doc_id": "52bd970f",
+    "doc_name": "使用RSA Token连接CheckPoint VPN及PIN码设置_220.181.114.93 or 10.25.134.3.docx",
+    "file_name": "使用RSA Token连接CheckPoint VPN及PIN码设置_220.181.114.93 or 10.25.134.3.docx",
+    "object_name": "52bd970f/使用RSA Token连接CheckPoint VPN及PIN码设置_220.181.114.93 or 10.25.134.3.docx",
+    "content_type": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+    "size_bytes": 1199920,
+    "status": "indexed",
+    "regulation_type": "",
+    "version": "",
+    "summary": "",
+    "summary_latency_ms": 0,
+    "chunk_count": 34,
+    "parser_name": "aliyun_docmind",
+    "index_name": "regulations_dense_1024_v1",
+    "error_message": "",
+    "created_at": "2026-05-25T07:45:12.777459+00:00",
+    "updated_at": "2026-05-25T07:45:37.314290+00:00",
+    "metadata": {
+      "generate_summary": true,
+      "parser_backend": "aliyun_docmind",
+      "parse_task_id": "docmind-20260525-6d782dc33f2748a4a1020df765b8182d",
+      "layout_count": 48,
+      "structure_node_count": 6,
+      "semantic_block_count": 33,
+      "vector_chunk_count": 34,
+      "artifact_keys": {
+        "layouts": "artifacts/52bd970f/layouts.json",
+        "structure_nodes": "artifacts/52bd970f/structure_nodes.json",
+        "semantic_blocks": "artifacts/52bd970f/semantic_blocks.json",
+        "vector_chunks": "artifacts/52bd970f/vector_chunks.json"
+      },
+      "processing_stage": "indexed",
+      "index_collection": "regulations_dense_1024_v1"
+    }
   }
 }