feat: add Switch dropdown options for profile management

- Add "Import Existing Key" option with vpn_key icon
- Add "Generate New Key" option to create fresh nsec
- Add "Remove <name>" option to delete merchant from DB
- Wire up generate-key event to existing generateKeys function

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

static/components/merchant-tab.js

@@ -19,7 +19,9 @@ window.app.component('merchant-tab', {
     'merchant-deleted',
     'toggle-merchant-state',
     'restart-nostr-connection',
-    'profile-updated'
+    'profile-updated',
+    'import-key',
+    'generate-key'
   ],
   data: function () {
     return {
@@ -57,6 +59,32 @@ window.app.component('merchant-tab', {
     handleMerchantDeleted: function () {
       this.$emit('merchant-deleted')
     },
+    removeMerchant: function () {
+      const name =
+        this.merchantConfig?.display_name ||
+        this.merchantConfig?.name ||
+        'this merchant'
+      LNbits.utils
+        .confirmDialog(
+          `Are you sure you want to remove "${name}"? This will delete all associated data (stalls, products, orders, messages).`
+        )
+        .onOk(async () => {
+          try {
+            await LNbits.api.request(
+              'DELETE',
+              `/nostrmarket/api/v1/merchant/${this.merchantId}`,
+              this.adminkey
+            )
+            this.$emit('merchant-deleted')
+            this.$q.notify({
+              type: 'positive',
+              message: 'Merchant removed'
+            })
+          } catch (error) {
+            LNbits.utils.notifyApiError(error)
+          }
+        })
+    },
     toggleMerchantState: function () {
       this.$emit('toggle-merchant-state')
     },