Fix ESLint globals, parseFloat to Number.parseFloat, label for, add AccountController coverage tests

- Add setTimeout, globalThis, navigator, fetch, caches etc to ESLint globals
- Use Number.parseFloat in event-map.js
- Add for attribute to admin events search label
- Add tests: events search, toggle/delete access denied for other user

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

assets/modules/event-map.js

@@ -30,8 +30,8 @@ function geocodeAndRender(address, mapEl) {
                 return
             }
 
-            const lat = parseFloat(data[0].lat)
-            const lon = parseFloat(data[0].lon)
+            const lat = Number.parseFloat(data[0].lat)
+            const lon = Number.parseFloat(data[0].lon)
 
             const map = L.map(mapEl).setView([lat, lon], 16)