fix: app cache and other issues (#5460)

* fixes

* #[serde(untagged)] my BEHATED (still kinda broken)

* remove unused hasContent ref

* clean up code in fetch instance

* ping 3 times for average latency

* fix: pinging to be more accurate

TCP_NODELAY — Set on the TCP stream right after connect, preventing Nagle's algorithm from buffering the small ping packet (could save up to ~40ms)

Instant over Utc::now() — Switched to monotonic std::time::Instant for timing, which is more precise and designed for measuring elapsed time (still using chrono just for the ping magic value)

* delete useFetch util and just use native fetch

* rename worlds until functions for more clarity

* fix lint

* fix cache.rs logic

* make backend ping use both impls

* Add optional timeout to server ping

* fix gallery appearing in nav with no items

* remove EU countries and add EU option for server country

* add uk to europe

---------

Co-authored-by: aecsocket <aecsocket@tutanota.com>

apps/frontend/src/pages/[type]/[id].vue

@@ -2523,6 +2523,13 @@ const navLinks = computed(() => {
 	const routeType = route.params.type || project.value.project_type
 	const projectUrl = `/${routeType}/${project.value.slug ? project.value.slug : project.value.id}`
 
+	const galleryCount =
+		routeType === 'server'
+			? project.value.gallery.filter((item) => item.name === '__mc_server_banner__').length
+			: project.value.gallery.length
+
+	console.log('galleryCount', galleryCount, !!currentMember.value)
+
 	return [
 		{
 			label: formatMessage(messages.descriptionTab),
@@ -2531,7 +2538,7 @@ const navLinks = computed(() => {
 		{
 			label: formatMessage(messages.galleryTab),
 			href: `${projectUrl}/gallery`,
-			shown: project.value.gallery.length > 0 || !!currentMember.value,
+			shown: galleryCount > 0 || !!currentMember.value,
 		},
 		{
 			label: formatMessage(messages.changelogTab),

apps/frontend/src/pages/[type]/[id]/settings/server.vue

@@ -281,35 +281,46 @@ if (projectV3.value) {
 const countryOptions = [
 	{ value: 'US', label: 'United States' },
 	{ value: 'CA', label: 'Canada' },
-	{ value: 'GB', label: 'United Kingdom' },
-	{ value: 'DE', label: 'Germany' },
-	{ value: 'FR', label: 'France' },
-	{ value: 'NL', label: 'Netherlands' },
-	{ value: 'FI', label: 'Finland' },
-	{ value: 'SE', label: 'Sweden' },
+	{
+		value: 'EU',
+		label: 'Europe',
+		searchTerms: [
+			'Germany',
+			'France',
+			'Netherlands',
+			'Finland',
+			'Sweden',
+			'Denmark',
+			'Poland',
+			'Czech Republic',
+			'Romania',
+			'Austria',
+			'Belgium',
+			'Ireland',
+			'Spain',
+			'Italy',
+			'Portugal',
+			'Lithuania',
+			'Latvia',
+			'Estonia',
+			'Bulgaria',
+			'Croatia',
+			'Hungary',
+			'Slovakia',
+			'Greece',
+			'Luxembourg',
+			'Malta',
+			'Cyprus',
+			'Slovenia',
+			'Great Britain',
+			'United Kingdom',
+		],
+	},
 	{ value: 'NO', label: 'Norway' },
-	{ value: 'DK', label: 'Denmark' },
-	{ value: 'PL', label: 'Poland' },
-	{ value: 'CZ', label: 'Czech Republic' },
-	{ value: 'RO', label: 'Romania' },
 	{ value: 'CH', label: 'Switzerland' },
-	{ value: 'AT', label: 'Austria' },
-	{ value: 'BE', label: 'Belgium' },
-	{ value: 'IE', label: 'Ireland' },
-	{ value: 'ES', label: 'Spain' },
-	{ value: 'IT', label: 'Italy' },
-	{ value: 'PT', label: 'Portugal' },
 	{ value: 'RU', label: 'Russia' },
 	{ value: 'UA', label: 'Ukraine' },
-	{ value: 'LT', label: 'Lithuania' },
-	{ value: 'LV', label: 'Latvia' },
-	{ value: 'EE', label: 'Estonia' },
-	{ value: 'BG', label: 'Bulgaria' },
-	{ value: 'HR', label: 'Croatia' },
-	{ value: 'HU', label: 'Hungary' },
-	{ value: 'SK', label: 'Slovakia' },
 	{ value: 'RS', label: 'Serbia' },
-	{ value: 'GR', label: 'Greece' },
 	{ value: 'TR', label: 'Turkey' },
 	{ value: 'IL', label: 'Israel' },
 	{ value: 'AE', label: 'United Arab Emirates' },