Enable template auto-reload and fix scan log UI

TEMPLATES_AUTO_RELOAD=True so index.html volume-mount hot-reloads on
browser refresh without a container restart. Also: scan log persists
after scan with dismiss button when failures exist; slider renamed
from Sessions to Parallel with clarifying tooltip.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -254,4 +254,5 @@ def api_export_png():
 
 
 if __name__ == "__main__":
+    app.config['TEMPLATES_AUTO_RELOAD'] = True
     app.run(host="0.0.0.0", port=5000, debug=False)

index.html

@@ -416,6 +416,17 @@ var Xr=function(e){if(!(this instanceof Xr))return new Xr(e);this.id="Thenable/1
   }
   .scan-log-line.ok   { color: #3fb950; }
   .scan-log-line.fail { color: #f85149; }
+  .scan-log-dismiss {
+    margin-left: auto;
+    background: none;
+    border: none;
+    color: #484f58;
+    cursor: pointer;
+    font-size: 14px;
+    padding: 0 4px;
+    line-height: 1;
+  }
+  .scan-log-dismiss:hover { color: #8b949e; }
   .spinner {
     width: 14px; height: 14px;
     border: 2px solid rgba(79,142,247,.3);
@@ -485,7 +496,7 @@ var Xr=function(e){if(!(this instanceof Xr))return new Xr(e);this.id="Thenable/1
     </div>
 
     <div class="scan-settings-wrap">
-      <span>Sessions</span>
+      <span title="Max switches running commands in parallel after login">Parallel</span>
       <input type="range" id="workersSlider" min="1" max="10" value="5" oninput="document.getElementById('workersVal').textContent=this.value">
       <span class="setting-val" id="workersVal">5</span>
       <div class="scan-settings-sep"></div>
@@ -585,8 +596,9 @@ var Xr=function(e){if(!(this instanceof Xr))return new Xr(e);this.id="Thenable/1
 <!-- Scan log panel -->
 <div class="scan-log" id="statusBar">
   <div class="scan-log-header">
-    <div class="spinner"></div>
+    <div class="spinner" id="scanSpinner"></div>
     <span id="statusText" class="scan-log-summary">Scanning...</span>
+    <button class="scan-log-dismiss" id="scanLogDismiss" onclick="document.getElementById('statusBar').classList.remove('visible')" style="display:none">✕</button>
   </div>
   <div class="scan-log-body" id="scanLogBody"></div>
 </div>
@@ -936,6 +948,8 @@ async function pollStatus() {
       document.getElementById('clearScanBtn').disabled = true;
       progressWrap.classList.add('visible');
       statusBar.classList.add('visible');
+      document.getElementById('scanSpinner').style.display = '';
+      document.getElementById('scanLogDismiss').style.display = 'none';
 
       const pct = s.total > 0 ? Math.round((s.done / s.total) * 100) : 0;
       progressBar.style.width = pct + '%';
@@ -964,8 +978,31 @@ async function pollStatus() {
           const positions = cy.nodes().map(n => ({ id: n.id(), x: n.position('x'), y: n.position('y') }));
           await fetch('/api/layout', { method: 'POST', headers: {'Content-Type':'application/json'}, body: JSON.stringify({ positions }) });
         }, 1000);
+
+        // Update log panel to show completed state
+        const spinner = document.getElementById('scanSpinner');
+        const dismissBtn = document.getElementById('scanLogDismiss');
+        const logBody = document.getElementById('scanLogBody');
+        const lines = s.log_lines || [];
+        logBody.innerHTML = lines.map(l =>
+          `<div class="scan-log-line ${l.ok ? 'ok' : 'fail'}"><span style="color:#484f58">${l.ts}&nbsp;&nbsp;</span>${l.text}</div>`
+        ).join('');
+        logBody.scrollTop = logBody.scrollHeight;
+
+        if (s.fail > 0) {
+          // Keep panel open so user can read errors
+          spinner.style.display = 'none';
+          statusText.innerHTML =
+            `Scan complete &nbsp;—&nbsp; ` +
+            `<span class="ok-count">✓ ${s.ok}</span>&nbsp;&nbsp;` +
+            `<span class="fail-count">✗ ${s.fail} failed</span>`;
+          dismissBtn.style.display = 'block';
+        } else {
+          statusBar.classList.remove('visible');
+          spinner.style.display = '';
+          dismissBtn.style.display = 'none';
+        }
       }
-      // Do NOT call loadTopology here on every poll tick
 
       scanBtn.disabled = false;
       document.getElementById('scanElecBtn').disabled = false;
@@ -976,7 +1013,6 @@ async function pollStatus() {
         progressWrap.classList.remove('visible');
         progressBar.style.width = '0%';
       }, 800);
-      statusBar.classList.remove('visible');
 
       clearInterval(pollInterval);
       pollInterval = null;