Add terminal-style scan log panel

scan_state now accumulates log_lines per switch result. The status
bar is replaced with a dark terminal panel showing a summary header
[done/total ✓ok ✗fail | now: hostname] and a scrolling per-switch
log with green/red colouring and timestamps.

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

index.html

@@ -382,18 +382,40 @@ var Xr=function(e){if(!(this instanceof Xr))return new Xr(e);this.id="Thenable/1
   }
 
   /* ── Scan status bar ── */
-  .status-bar {
+  .scan-log {
     display: none;
+    flex-direction: column;
+    background: #0d1117;
+    border-top: 1px solid #30363d;
+    flex-shrink: 0;
+    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
+    font-size: 12px;
+  }
+  .scan-log.visible { display: flex; }
+  .scan-log-header {
+    display: flex;
     align-items: center;
     gap: 10px;
-    padding: 8px 16px;
+    padding: 6px 14px;
-    background: rgba(79,142,247,.08);
+    background: #161b22;
-    border-top: 1px solid rgba(79,142,247,.2);
+    border-bottom: 1px solid #21262d;
-    font-size: 12px;
-    color: var(--accent);
     flex-shrink: 0;
   }
-  .status-bar.visible { display: flex; }
+  .scan-log-summary { color: #58a6ff; }
+  .scan-log-summary .ok-count  { color: #3fb950; font-weight: 600; }
+  .scan-log-summary .fail-count { color: #f85149; font-weight: 600; }
+  .scan-log-body {
+    max-height: 140px;
+    overflow-y: auto;
+    padding: 4px 14px 6px;
+  }
+  .scan-log-line {
+    padding: 1px 0;
+    color: #8b949e;
+    white-space: pre;
+  }
+  .scan-log-line.ok   { color: #3fb950; }
+  .scan-log-line.fail { color: #f85149; }
   .spinner {
     width: 14px; height: 14px;
     border: 2px solid rgba(79,142,247,.3);
@@ -560,10 +582,13 @@ var Xr=function(e){if(!(this instanceof Xr))return new Xr(e);this.id="Thenable/1
   </div>
 </div>
 
-<!-- Status bar -->
+<!-- Scan log panel -->
-<div class="status-bar" id="statusBar">
+<div class="scan-log" id="statusBar">
+  <div class="scan-log-header">
     <div class="spinner"></div>
-  <span id="statusText">Scanning...</span>
+    <span id="statusText" class="scan-log-summary">Scanning...</span>
+  </div>
+  <div class="scan-log-body" id="scanLogBody"></div>
 </div>
 
 <script>
@@ -915,8 +940,19 @@ async function pollStatus() {
       const pct = s.total > 0 ? Math.round((s.done / s.total) * 100) : 0;
       progressBar.style.width = pct + '%';
 
-      const host = s.current_hostname || s.current_ip || '...';
+      const host = s.current_hostname || s.current_ip || '…';
-      statusText.textContent = `Scanning ${host} — ${s.done}/${s.total} switches`;
+      statusText.innerHTML =
+        `[${s.done}/${s.total}]&nbsp;&nbsp;` +
+        `<span class="ok-count">✓ ${s.ok}</span>&nbsp;&nbsp;` +
+        `<span class="fail-count">✗ ${s.fail}</span>` +
+        `&nbsp;&nbsp;|&nbsp;&nbsp;now: ${host}`;
+
+      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;
 
     } else {
       if (isScanning) {

scanner.py

@@ -21,6 +21,7 @@ scan_state = {
     "ok": 0,
     "fail": 0,
     "errors": [],
+    "log_lines": [],
     "last_scan": None,
     "dept_filter": None,   # None = all, "ELEC" or "GW" = dept-only
 }
@@ -56,6 +57,7 @@ def run_scan(dept: str = None, workers: int = 5, login_delay: int = 3):
         "ok": 0,
         "fail": 0,
         "errors": [],
+        "log_lines": [],
         "dept_filter": dept,
     })
 
@@ -63,6 +65,8 @@ def run_scan(dept: str = None, workers: int = 5, login_delay: int = 3):
     clear_links()  # Fresh start for links each scan
 
     def on_progress(done, total, ip, result):
+        from datetime import datetime
+        ts = datetime.now().strftime("%H:%M:%S")
         scan_state["done"] = done
         scan_state["total"] = total
         scan_state["current_ip"] = ip
@@ -70,6 +74,12 @@ def run_scan(dept: str = None, workers: int = 5, login_delay: int = 3):
         if result["success"]:
             scan_state["ok"] += 1
             scan_state["current_hostname"] = result.get("hostname", ip)
+            vendor = result.get("vendor", "")
+            n = len(result.get("neighbors", []))
+            scan_state["log_lines"].append({
+                "ts": ts, "ok": True,
+                "text": f"✓  {result['hostname']} ({ip})  [{vendor}]  — {n} neighbor{'s' if n != 1 else ''}",
+            })
 
             upsert_switch(
                 chassis_id=result["chassis_id"],
@@ -100,9 +110,11 @@ def run_scan(dept: str = None, workers: int = 5, login_delay: int = 3):
                 )
         else:
             scan_state["fail"] += 1
-            scan_state["errors"].append({
+            error = result.get("error", "Unknown error")
-                "ip": ip,
+            scan_state["errors"].append({"ip": ip, "error": error})
-                "error": result.get("error", "Unknown error")
+            scan_state["log_lines"].append({
+                "ts": ts, "ok": False,
+                "text": f"✗  {ip}  — {error}",
             })
 
     scan_all_switches(switches, progress_callback=on_progress, max_workers=workers, login_delay=login_delay)