fix: 将工作流文档解析上限统一为 100MiB

- 前后端统一单文件与总大小限制为 100MiB

- 按实际读取字节数拦截超限文档并记录大小差异

- 补充存储、远程流与边界场景测试

easyflow-ui-admin/app/src/views/ai/workflow/components/__tests__/workflowFileValue.test.ts

@@ -127,20 +127,20 @@ describe('workflowFileValue', () => {
   });
 
   it('上传前校验单文件大小限制', () => {
-    const acceptedFile = new File(
-      [new Uint8Array(20 * 1024 * 1024)],
-      'accepted.pdf',
-    );
-    const oversizedFile = new File(
-      [new Uint8Array(20 * 1024 * 1024 + 1)],
-      'large.pdf',
-    );
+    const acceptedFile = new File([], 'accepted.pdf');
+    const oversizedFile = new File([], 'large.pdf');
+    Object.defineProperty(acceptedFile, 'size', {
+      value: 100 * 1024 * 1024,
+    });
+    Object.defineProperty(oversizedFile, 'size', {
+      value: 100 * 1024 * 1024 + 1,
+    });
 
     expect(() =>
       validateWorkflowFileSelection([], [acceptedFile]),
     ).not.toThrow();
     expect(() => validateWorkflowFileSelection([], [oversizedFile])).toThrow(
-      '单个文件不能超过 20.0 MB',
+      '单个文件不能超过 100.0 MB',
     );
   });
 
@@ -149,13 +149,13 @@ describe('workflowFileValue', () => {
       {
         fileName: 'existing.pdf',
         filePath: 'https://example.com/existing.pdf',
-        size: 49 * 1024 * 1024,
+        size: 99 * 1024 * 1024,
       },
     ];
     const incomingFile = new File([new Uint8Array(2 * 1024 * 1024)], 'new.pdf');
 
     expect(() =>
       validateWorkflowFileSelection(currentFiles, [incomingFile]),
-    ).toThrow('文件总大小不能超过 50.0 MB');
+    ).toThrow('文件总大小不能超过 100.0 MB');
   });
 });

easyflow-ui-admin/app/src/views/ai/workflow/components/workflowFileValue.ts

@@ -21,8 +21,8 @@ export interface WorkflowResourceLike {
 
 export const WORKFLOW_FILE_LIMITS = {
   maxCount: 10,
-  maxSingleSize: 20 * 1024 * 1024,
-  maxTotalSize: 50 * 1024 * 1024,
+  maxSingleSize: 100 * 1024 * 1024,
+  maxTotalSize: 100 * 1024 * 1024,
 } as const;
 
 /**