feat(ui): "Republish all" button on the admin Settings card

Surfaces the POST /republish-all endpoint added in the previous
commit. Lives in the existing admin-gated Settings card on the
events extension landing page, so the LNbits operator can trigger
the migration without curl + access tokens.

Confirm dialog before firing (the endpoint emits one Nostr event
per approved row, fine to retry but worth a click of friction).
Notification shows the republished/total count on success.

Self-closing tags expanded per the LNbits UMD rule
(webapp CLAUDE.md > LNbits + Quasar UMD gotchas) — q-separator
and q-btn would silently nest wrong otherwise.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

static/js/index.js

@@ -9,6 +9,7 @@ window.PageEvents = {
       pendingEvents: [],
       allUserEvents: [],
       isAdmin: false,
+      republishing: false,
       settings: {
         auto_approve: false
       },
@@ -275,6 +276,33 @@ window.PageEvents = {
           .catch(LNbits.utils.notifyApiError)
       })
     },
+    republishAllEvents() {
+      LNbits.utils
+        .confirmDialog(
+          'Re-emit every approved event to Nostr relays? This is safe ' +
+          'to run multiple times but generates one event per approved row.'
+        )
+        .onOk(() => {
+          this.republishing = true
+          LNbits.api
+            .request('POST', '/events/api/v1/events/republish-all')
+            .then(response => {
+              Quasar.Notify.create({
+                type: 'positive',
+                message:
+                  'Republished ' +
+                  response.data.republished +
+                  ' of ' +
+                  response.data.total +
+                  ' events'
+              })
+            })
+            .catch(LNbits.utils.notifyApiError)
+            .finally(() => {
+              this.republishing = false
+            })
+        })
+    },
     foldDateTime(day, time) {
       // Combine separate date/time inputs into the wire format
       // expected by the events extension: "YYYY-MM-DD" or

static/js/index.vue

@@ -15,6 +15,28 @@
               ></q-toggle>
             </div>
           </div>
+          <q-separator class="q-my-md"></q-separator>
+          <div class="row items-center justify-between">
+            <div class="col">
+              <span class="text-subtitle2">Republish to Nostr</span>
+              <div class="text-caption text-grey-7" style="color: #aaa">
+                Re-emit every approved event so connected clients pick
+                up the latest tag set. Useful after the extension
+                publisher changes (e.g. new tickets_* tags) so existing
+                events don't need a per-event edit.
+              </div>
+            </div>
+            <div class="col-auto">
+              <q-btn
+                outline
+                color="primary"
+                icon="cloud_upload"
+                label="Republish all"
+                :loading="republishing"
+                @click="republishAllEvents"
+              ></q-btn>
+            </div>
+          </div>
         </q-card-section>
       </q-card>