diff --git a/posimai-dev/index.html b/posimai-dev/index.html
index b58991e7..6f3db60e 100644
--- a/posimai-dev/index.html
+++ b/posimai-dev/index.html
@@ -26,10 +26,10 @@
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap" rel="stylesheet">
     <link rel="stylesheet" href="https://posimai-ui.vercel.app/v1/base.css">
-    <link rel="stylesheet" href="https://unpkg.com/@xterm/xterm@6.0.0/css/xterm.css">
+    <link rel="stylesheet" href="https://unpkg.com/@xterm/xterm@6.0.0/css/xterm.css" integrity="sha384-n2n7twoohnW+d3myBKaUgl7DSiwidw6MkQy9oesGzkPpMjejKRR3XlnD+5yCdtBD" crossorigin="anonymous">
     <script src="https://unpkg.com/lucide@0.344.0/dist/umd/lucide.min.js" integrity="sha384-tTkFttkBclaU1cloKwOi9xk3pbao3VZxTjLNBt8iFABWDBQibbAbWpVmO28zMuxq" crossorigin="anonymous"></script>
-    <script src="https://unpkg.com/@xterm/xterm@6.0.0/lib/xterm.js"></script>
-    <script src="https://unpkg.com/@xterm/addon-fit@0.11.0/lib/addon-fit.js"></script>
+    <script src="https://unpkg.com/@xterm/xterm@6.0.0/lib/xterm.js" integrity="sha384-f/1U6Z9wM4D71a5eRXEZnyOTMOvjqxr2XLwh+Go1OvIl3L3tOcvUrzudnhbECwl4" crossorigin="anonymous"></script>
+    <script src="https://unpkg.com/@xterm/addon-fit@0.11.0/lib/addon-fit.js" integrity="sha384-txoiwu4RR2GD3qySbaj+BbzibkLbSJRcfqGYMu6z1EqHil4A2dyBiBW5dlacG6OR" crossorigin="anonymous"></script>
 
     <style>
         :root {
@@ -294,7 +294,7 @@
                 <i data-lucide="terminal" style="width:12px;height:12px;stroke-width:1.75;color:var(--accent);flex-shrink:0"></i>
                 <span id="settingsSessionId">—</span>
             </div>
-            <a href="/sessions.html" style="font-size:13px;color:var(--accent);text-decoration:none;display:flex;align-items:center;gap:6px;margin-top:10px" rel="noopener">
+            <a href="/sessions.html" style="font-size:13px;color:var(--accent);text-decoration:none;display:flex;align-items:center;gap:6px;margin-top:10px" rel="noopener noreferrer">
                 <i data-lucide="history" style="width:14px;height:14px;stroke-width:1.75"></i>
                 過去のセッションを見る
             </a>
diff --git a/posimai-dev/manifest.json b/posimai-dev/manifest.json
index 74ab4983..c0688f63 100644
--- a/posimai-dev/manifest.json
+++ b/posimai-dev/manifest.json
@@ -1,4 +1,5 @@
 {
+  "id": "/posimai-dev/",
   "name": "posimai-dev",
   "short_name": "dev",
   "description": "posimai development portal",
diff --git a/posimai-dev/station-b.html b/posimai-dev/station-b.html
index d0b7bcb7..e0573a01 100644
--- a/posimai-dev/station-b.html
+++ b/posimai-dev/station-b.html
@@ -227,7 +227,7 @@
                 <div class="stat-card"><div class="stat-label">Node.js</div><div class="stat-val" id="node-val">—</div></div>
                 <div class="stat-card"><div class="stat-label">Platform</div><div class="stat-val" id="platform-val">—</div></div>
             </div>
-            <a class="open-btn" href="/" target="_blank" rel="noopener"><i data-lucide="terminal"></i>posimai-dev を開く</a>
+            <a class="open-btn" href="/" target="_blank" rel="noopener noreferrer"><i data-lucide="terminal"></i>posimai-dev を開く</a>
             <!-- Divider -->
             <div class="machines-divider"></div>
             <!-- VPS section -->
@@ -333,10 +333,10 @@
         <div id="bottom-row">
             <div class="bottom-brand">posimai<span>-station</span> <span style="font-size:10px;color:var(--violet);margin-left:4px">B</span></div>
             <div class="bottom-links">
-                <a class="bottom-link" href="/station" rel="noopener"><i data-lucide="monitor"></i>Design A</a>
-                <a class="bottom-link" href="/" target="_blank" rel="noopener"><i data-lucide="terminal"></i>dev</a>
-                <a class="bottom-link" href="https://posimai-atlas.vercel.app" target="_blank" rel="noopener"><i data-lucide="network"></i>atlas</a>
-                <a class="bottom-link" href="https://posimai.soar-enrich.com" target="_blank" rel="noopener"><i data-lucide="layout-dashboard"></i>dashboard</a>
+                <a class="bottom-link" href="/station" rel="noopener noreferrer"><i data-lucide="monitor"></i>Design A</a>
+                <a class="bottom-link" href="/" target="_blank" rel="noopener noreferrer"><i data-lucide="terminal"></i>dev</a>
+                <a class="bottom-link" href="https://posimai-atlas.vercel.app" target="_blank" rel="noopener noreferrer"><i data-lucide="network"></i>atlas</a>
+                <a class="bottom-link" href="https://posimai.soar-enrich.com" target="_blank" rel="noopener noreferrer"><i data-lucide="layout-dashboard"></i>dashboard</a>
             </div>
             <div id="refresh-countdown">次の更新まで <span id="countdown">30</span>s</div>
         </div>
diff --git a/posimai-dev/station.html b/posimai-dev/station.html
index 0a3b8707..a4050414 100644
--- a/posimai-dev/station.html
+++ b/posimai-dev/station.html
@@ -234,7 +234,7 @@
                 <div class="stat-card"><div class="stat-label">Platform</div><div class="stat-val" id="platform-val">—</div></div>
                 <div class="stat-card" id="temp-card" style="display:none"><div class="stat-label">CPU Temp</div><div class="stat-val" id="temp-val">—</div></div>
             </div>
-            <a class="open-btn" href="/" target="_blank" rel="noopener"><i data-lucide="terminal"></i>posimai-dev を開く</a>
+            <a class="open-btn" href="/" target="_blank" rel="noopener noreferrer"><i data-lucide="terminal"></i>posimai-dev を開く</a>
         </div>
         <!-- Col 2: rings + sparkline -->
         <div class="panel rings-panel">
@@ -317,10 +317,10 @@
         <div id="bottom-row">
         <div class="bottom-brand">posimai<span>-station</span></div>
         <div class="bottom-links">
-            <a class="bottom-link" href="/station-b" rel="noopener"><i data-lucide="monitor"></i>Design B</a>
-            <a class="bottom-link" href="/" target="_blank" rel="noopener"><i data-lucide="terminal"></i>dev</a>
-            <a class="bottom-link" href="https://posimai-atlas.vercel.app" target="_blank" rel="noopener"><i data-lucide="network"></i>atlas</a>
-            <a class="bottom-link" href="https://posimai.soar-enrich.com" target="_blank" rel="noopener"><i data-lucide="layout-dashboard"></i>dashboard</a>
+            <a class="bottom-link" href="/station-b" rel="noopener noreferrer"><i data-lucide="monitor"></i>Design B</a>
+            <a class="bottom-link" href="/" target="_blank" rel="noopener noreferrer"><i data-lucide="terminal"></i>dev</a>
+            <a class="bottom-link" href="https://posimai-atlas.vercel.app" target="_blank" rel="noopener noreferrer"><i data-lucide="network"></i>atlas</a>
+            <a class="bottom-link" href="https://posimai.soar-enrich.com" target="_blank" rel="noopener noreferrer"><i data-lucide="layout-dashboard"></i>dashboard</a>
         </div>
         <div id="refresh-countdown">次の更新まで <span id="countdown">30</span>s</div>
         </div>