feat: organizer-side "Republish mine" button + scoped endpoint

The admin /republish-all hits every approved event regardless of
owner — useful for the catalog migration, but heavy. Organizers
who want to re-emit just THEIR own events (e.g. after the AIO
publisher gained the tickets_* tags and an organizer's events
should pick them up) need a lighter knob.

Backend: new POST /republish-mine wallet-scoped via require_admin_key,
mirrors api_tickets's `all_wallets=true` shape so the page can
re-emit across every wallet the user owns. Filters to approved +
non-canceled rows.

UI: "Republish mine" button alongside "New Event" so every
logged-in user sees it (no isAdmin gate). Loading state +
confirm dialog + success count notification.

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

static/js/index.js

@@ -10,6 +10,7 @@ window.PageEvents = {
       allUserEvents: [],
       isAdmin: false,
       republishing: false,
+      republishingMine: false,
       settings: {
         auto_approve: false
       },
@@ -303,6 +304,36 @@ window.PageEvents = {
             })
         })
     },
+    republishMyEvents() {
+      LNbits.utils
+        .confirmDialog(
+          'Re-emit your approved events to Nostr relays?'
+        )
+        .onOk(() => {
+          this.republishingMine = true
+          LNbits.api
+            .request(
+              'POST',
+              '/events/api/v1/events/republish-mine?all_wallets=true',
+              this.g.user.wallets[0].adminkey
+            )
+            .then(response => {
+              Quasar.Notify.create({
+                type: 'positive',
+                message:
+                  'Republished ' +
+                  response.data.republished +
+                  ' of your ' +
+                  response.data.total +
+                  ' events'
+              })
+            })
+            .catch(LNbits.utils.notifyApiError)
+            .finally(() => {
+              this.republishingMine = false
+            })
+        })
+    },
     foldDateTime(day, time) {
       // Combine separate date/time inputs into the wire format
       // expected by the events extension: "YYYY-MM-DD" or