fix(modal/tags): fandom list, modal kebab, ESC-after-accept — #712 #711 #700

#712 — fandom picker showed no existing fandoms: loadFandoms enumerated via
/tags/autocomplete with q=' ', which the backend strips to empty → returns [].
Switch to the cursor-paged /tags/directory?kind=fandom (loop all pages); drop the
load-once guard so the dialog reflects fandoms created elsewhere.

#711 — modal tag-chip kebab never opened: the kebab + menu were nested INSIDE the
v-chip, which swallowed the click / mis-anchored the teleported menu. Un-nest it
as a sibling v-btn using the standard v-menu activator slot (Vuetify wires the
click and stacks the overlay above the modal natively). Removes the openTagId
workaround.

#700 — ESC didn't close the modal after accepting a suggested tag: the guard
suppressed close while ANY .v-overlay--active existed, which includes tooltips —
a lingering tooltip blocked the close. Exclude .v-tooltip from the guard so only
real interactive overlays (menus/dialogs) keep ESC from closing.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/components/modal/FandomPicker.vue

@@ -38,7 +38,8 @@ const store = useTagStore()
 const selectedId = ref(null)
 const newName = ref('')
 
-onMounted(() => { if (store.fandomCache.length === 0) store.loadFandoms() })
+// Always refresh on open so the list reflects fandoms created elsewhere (#712).
+onMounted(() => store.loadFandoms())
 
 async function onCreate() {
   const f = await store.createFandom(newName.value.trim())