fix: prevent instant plans from breaking after customization

Fixed multiple issues:
1. Enhanced closeInstantCustomization to properly reset state
2. Clear customization containers and config state
3. Re-render instant servers when returning from customize
4. Fixed tab switching to preserve instant server selection
5. Auto-select first instant server when switching back to instant tab

Now instant plans work correctly:
- After customizing, clicking back returns to instant grid
- Switching tabs preserves instant server functionality
- Selected server state is properly maintained

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Documents/Vibe Coding Projects/dedicatednodes-redesign/dedicatednodes-bare-metal/new-baremetal.html

@@ -4122,7 +4122,27 @@ var wpcf7 = {
             isInstantCustomized = false;
             document.getElementById('instantOptions').style.display = 'none';
             document.getElementById('instantServersGrid').style.display = 'grid';
+
+            // Clear the customization container to avoid conflicts
+            const instantContainer = document.getElementById('instantDynamicConfigContainer');
+            if (instantContainer) instantContainer.innerHTML = '';
+
+            // Reset config state to clean values
+            configState = {};
+            configIds = {};
+            storageSelection = {};
+
+            // Clear any original drives tracking
+            if (window.originalDrives) {
+                window.originalDrives = [];
+            }
+
+            // Re-render the instant servers grid to ensure proper display
+            renderInstantServers();
+
+            // Update summary and specs for the selected instant server
             updateSummary();
+            updateSpecs(selectedServer);
         }
 
         // Customize Instant Server Button Logic
@@ -5332,8 +5352,32 @@ var wpcf7 = {
                 document.getElementById('instant-content').classList.toggle('active', currentTab === 'instant');
                 document.getElementById('custom-content').classList.toggle('active', currentTab === 'custom');
 
-                selectedServer = null;
+                // Reset customization state when switching
+                isInstantCustomized = false;
+                document.getElementById('instantOptions').style.display = 'none';
+                document.getElementById('instantServersGrid').style.display = 'grid';
                 document.getElementById('customOptions').style.display = 'none';
+
+                // Clear containers
+                const instantContainer = document.getElementById('instantDynamicConfigContainer');
+                if (instantContainer) instantContainer.innerHTML = '';
+
+                // Reset config state
+                configState = {};
+                configIds = {};
+                storageSelection = {};
+
+                // If switching back to instant tab, re-render instant servers
+                if (currentTab === 'instant') {
+                    renderInstantServers();
+                    // Auto-select first instant server if none selected
+                    if (!selectedServer && instantServers.length > 0) {
+                        selectInstantServer(instantServers[0].id);
+                    }
+                } else {
+                    selectedServer = null;
+                }
+
                 updateSummary();
             });
         });