diff --git a/.jules/palette.md b/.jules/palette.md
index ea004e2d2..e2b3c25f2 100644
--- a/.jules/palette.md
+++ b/.jules/palette.md
@@ -81,3 +81,7 @@
 ## 2026-08-12 - Skip to Content Accessibility
 **Learning:** Screen reader and keyboard-only users experience significant friction when forced to navigate through repetitive header controls on every page load.
 **Action:** Keep a visible-on-focus skip link as the first interactive element, target a programmatically focusable main container, and give the focused link a high-contrast outline.
+
+## 2024-10-07 - File Upload Proxy Accessibility
+**Learning:** `aria-hidden="true"`는 파일 입력 요소를 접근성 트리에서 제거
+**Action:** 기본 파일 입력 요소(input[type="file"])를 프록시 버튼으로 대체할 때 접근성 트리를 올바르게 관리해야 합니다.
diff --git a/scanner/dashboard/index.html b/scanner/dashboard/index.html
index 132bc31b2..34fd4407c 100644
--- a/scanner/dashboard/index.html
+++ b/scanner/dashboard/index.html
@@ -93,7 +93,8 @@
   <span class="logo"></span><span class="brand">AppGuardrail</span>
   <span class="spacer"></span>
   <span class="meta" id="src">no findings loaded</span>
-  <input type="file" id="file" accept="application/json,.json" aria-label="Upload findings file" style="margin-left:12px">
+  <input type="file" id="file" accept="application/json,.json" aria-label="Upload findings file" style="margin-left:12px" aria-hidden="true" class="sr-only" tabindex="-1">
+  <button type="button" id="header-browse-findings" class="primary-action" style="margin-left:12px">Upload findings</button>
 </header>
 <p id="findings-summary" class="sr-only" role="status" aria-live="polite" aria-atomic="true"></p>
 <main id="app" tabindex="-1"></main>
@@ -325,6 +326,10 @@ <h1>Dashboard</h1>
 }
 
 const fileInput = document.getElementById('file');
+const headerBrowseFindings = document.getElementById('header-browse-findings');
+if (headerBrowseFindings) {
+  headerBrowseFindings.addEventListener('click', () => fileInput.click());
+}
 fileInput.addEventListener('change', () => {
   const selectedFile = fileInput.files?.[0];
   fileInput.value = '';
diff --git a/tests/test_dashboard_core.py b/tests/test_dashboard_core.py
index 75a5809f8..fcc98912a 100644
--- a/tests/test_dashboard_core.py
+++ b/tests/test_dashboard_core.py
@@ -302,3 +302,23 @@ def test_dashboard_search_escape_clears_input():
     assert "e.key === 'Escape'" in html
     assert "query = '';" in html
     assert "render();" in html
+
+def test_file_upload_proxy_accessibility_contract_is_documented_accurately() -> None:
+    """Ensure the learning about aria-hidden is accurately documented in the journal."""
+    from pathlib import Path
+    import pytest
+    journal_path = Path('.jules/palette.md')
+    if not journal_path.exists():
+        pytest.skip("Journal file not found.")
+    content = journal_path.read_text(encoding='utf-8')
+    assert '`aria-hidden="true"`는 파일 입력 요소를 접근성 트리에서 제거' in content
+
+def test_file_upload_proxy_structure_meets_accessibility_constraints() -> None:
+    """Ensure the proxy button and hidden file input meet structural a11y constraints."""
+    html = dashboard_index_path().read_text(encoding="utf-8")
+
+    assert 'aria-hidden="true"' in html
+    assert 'class="sr-only"' in html
+    assert 'tabindex="-1"' in html
+    assert 'id="header-browse-findings"' in html
+    assert "headerBrowseFindings.addEventListener('click', () => fileInput.click())" in html