refactor(webhooks): Integrate webhooks panel into status card

- Moved webhooks-section to be inline with status-panel in HTML
- Updated toggleStatusPanel() to show/hide webhooks section for admin users
- Updated closeStatusPanel() to also hide webhooks section
- Removed webhooks visibility from showDashboard() - now tied to status panel
- Updated CSS to make webhooks section styling consistent with status panel:
  - Same border, border-radius, margin, box-shadow
  - Updated webhook-stats to use status-card styling (background, border)
- Webhooks metrics now display inline with status panel for admin users

public/style.css

@@ -1520,9 +1520,11 @@ body {
 /* ===== Webhooks Configuration ===== */
 .webhooks-section {
   background: var(--surface);
-  border-radius: 12px;
-  box-shadow: 0 2px 8px var(--shadow);
-  margin-bottom: 20px;
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  padding: 0;
+  margin-bottom: 16px;
+  box-shadow: 0 2px 4px var(--shadow);
   overflow: hidden;
 }
 
@@ -1548,6 +1550,15 @@ body {
   font-weight: 600;
 }
 
+/* Webhooks metrics styling to match status cards */
+.webhook-stats {
+  background: var(--background);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 14px;
+  margin-top: 12px;
+}
+
 .webhooks-toggle {
   font-size: 1rem;
   color: var(--text-muted);
@@ -1690,13 +1701,6 @@ body {
   color: var(--text-muted);
 }
 
-.webhook-stats {
-  margin-top: 12px;
-  padding: 12px;
-  background: var(--surface-alt);
-  border-radius: 8px;
-}
-
 .webhook-stats-title {
   color: var(--text-muted);
   font-size: 0.7rem;