Fix IP address text color in IPAM maintenance and logs

- Added color: var(--text-primary) to unlinked allocations IP in ipam_dashboard.html
- Added color: var(--text-primary) to IP address column in logs.html
- Prevents black text on dark theme

backend/app/templates/ipam_dashboard.html

@@ -454,7 +454,7 @@ function renderUnlinked(unlinked) {
         html += `
             <div style="display: flex; justify-content: space-between; align-items: center; padding: 0.5rem; border-bottom: 1px solid var(--border-color);">
                 <div>
-                    <span style="font-family: monospace;">${u.ip_address}</span>
+                    <span style="font-family: monospace; color: var(--text-primary);">${u.ip_address}</span>
                     <span style="color: var(--text-secondary); margin-left: 0.5rem;">${u.resource_name}</span>
                 </div>
                 <div>

backend/app/templates/logs.html

@@ -674,7 +674,7 @@
                 <td>${log.action}</td>
                 <td class="log-message" title="${escapeHtml(log.message)}">${escapeHtml(log.message)}</td>
                 <td>${log.username || '-'}</td>
-                <td style="font-family: monospace; font-size: 0.8rem;">${log.ip_address || '-'}</td>
+                <td style="font-family: monospace; font-size: 0.8rem; color: var(--text-primary);">${log.ip_address || '-'}</td>
                 <td class="${log.success ? 'log-success' : 'log-failed'}">${log.success ? '✓' : '✗'}</td>
             </tr>
         `).join('');