fix: 空文件 verdict error→pass

console.py upload_multiple_files L1278-1291:
  空文件被硬编码成 verdict='error' ok=False
  根因: 把'没内容'当成'检测异常'
  修复: 空文件是合法文件, 改成 verdict='pass' ok=True reason='空文件，无风险'

app/console.py

@@ -1276,17 +1276,18 @@ async def test_upload(
             with tempfile.NamedTemporaryFile(delete=False, suffix=suffix) as tmp:
                 content = await f.read()
                 if not content:
+                    # 空文件不是错误 — 合法文件, 只是没内容, 直接放行
                     results.append({
                         "filename": filename,
                         "size": 0,
-                        "verdict": "error",
-                        "verdict_cn": verdict_label("error"),
-                        "verdict_badge": verdict_badge("error"),
+                        "verdict": "pass",
+                        "verdict_cn": verdict_label("pass"),
+                        "verdict_badge": verdict_badge("pass"),
                         "score": 0,
-                        "reason": "空文件",
+                        "reason": "空文件，无风险",
                         "findings": [],
                         "duration_ms": 0,
-                        "ok": False,
+                        "ok": True,
                     })
                     continue
                 tmp.write(content)