diff --git a/.github/misskey/test.yml b/.github/misskey/test.yml
index cd33f8a93..f43f74be1 100644
--- a/.github/misskey/test.yml
+++ b/.github/misskey/test.yml
@@ -4,12 +4,12 @@ url: 'http://misskey.local'
 port: 61812
 
 db:
-  host: localhost
+  host: 127.0.0.1
   port: 54312
   db: test-misskey
   user: postgres
   pass: ''
 redis:
-  host: localhost
+  host: 127.0.0.1
   port: 56312
 id: aid
diff --git a/packages/client/src/components/MkReactionsViewer.details.vue b/packages/client/src/components/MkReactionsViewer.details.vue
index 10e82cb9f..fb8d74ad4 100644
--- a/packages/client/src/components/MkReactionsViewer.details.vue
+++ b/packages/client/src/components/MkReactionsViewer.details.vue
@@ -3,7 +3,7 @@
 	<div class="bqxuuuey">
 		<div class="reaction">
 			<XReactionIcon :reaction="reaction" :custom-emojis="emojis" class="icon" :no-style="true"/>
-			<div class="name">{{ reaction.replace('@.', '') }}</div>
+			<div class="name">{{ getReactionName(reaction) }}</div>
 		</div>
 		<div class="users">
 			<div v-for="u in users" :key="u.id" class="user">
@@ -20,6 +20,7 @@
 import { } from 'vue';
 import MkTooltip from './MkTooltip.vue';
 import XReactionIcon from '@/components/MkReactionIcon.vue';
+import { getEmojiName } from '@/scripts/emojilist';
 
 defineProps<{
 	showing: boolean;
@@ -33,6 +34,14 @@ defineProps<{
 const emit = defineEmits<{
 	(ev: 'closed'): void;
 }>();
+
+function getReactionName(reaction: string): string {
+	const trimLocal = reaction.replace('@.', '');
+	if (trimLocal.startsWith(':')) {
+		return trimLocal;
+	}
+	return getEmojiName(reaction) ?? reaction;
+}
 </script>
 
 <style lang="scss" scoped>
diff --git a/packages/client/src/components/global/MkEmoji.vue b/packages/client/src/components/global/MkEmoji.vue
index 106778aee..440ef6220 100644
--- a/packages/client/src/components/global/MkEmoji.vue
+++ b/packages/client/src/components/global/MkEmoji.vue
@@ -1,17 +1,18 @@
 <template>
 <img v-if="customEmoji" class="mk-emoji custom" :class="{ normal, noStyle }" :src="url" :alt="alt" :title="alt" decoding="async"/>
-<img v-else-if="char && !useOsNativeEmojis" class="mk-emoji" :src="url" :alt="alt" :title="alt" decoding="async"/>
-<span v-else-if="char && useOsNativeEmojis">{{ char }}</span>
+<img v-else-if="char && !useOsNativeEmojis" class="mk-emoji" :src="url" decoding="async" @pointerenter="computeTitle"/>
+<span v-else-if="char && useOsNativeEmojis" :alt="alt" @pointerenter="computeTitle">{{ char }}</span>
 <span v-else>{{ emoji }}</span>
 </template>
 
 <script lang="ts" setup>
-import { computed, ref, watch } from 'vue';
+import { computed } from 'vue';
 import { CustomEmoji } from 'misskey-js/built/entities';
 import { getStaticImageUrl } from '@/scripts/get-static-image-url';
 import { char2filePath } from '@/scripts/twemoji-base';
 import { defaultStore } from '@/store';
 import { instance } from '@/instance';
+import { getEmojiName } from '@/scripts/emojilist';
 
 const props = defineProps<{
 	emoji: string;
@@ -22,20 +23,28 @@ const props = defineProps<{
 }>();
 
 const isCustom = computed(() => props.emoji.startsWith(':'));
-const char = computed(() => isCustom.value ? null : props.emoji);
+const char = computed(() => isCustom.value ? undefined : props.emoji);
 const useOsNativeEmojis = computed(() => defaultStore.state.useOsNativeEmojis && !props.isReaction);
 const ce = computed(() => props.customEmojis ?? instance.emojis ?? []);
-const customEmoji = computed(() => isCustom.value ? ce.value.find(x => x.name === props.emoji.substr(1, props.emoji.length - 2)) : null);
+const customEmoji = computed(() => isCustom.value ? ce.value.find(x => x.name === props.emoji.substr(1, props.emoji.length - 2)) : undefined);
 const url = computed(() => {
 	if (char.value) {
 		return char2filePath(char.value);
 	} else {
+		const rawUrl = (customEmoji.value as CustomEmoji).url;
 		return defaultStore.state.disableShowingAnimatedImages
-			? getStaticImageUrl(customEmoji.value.url)
-			: customEmoji.value.url;
+			? getStaticImageUrl(rawUrl)
+			: rawUrl;
 	}
 });
 const alt = computed(() => customEmoji.value ? `:${customEmoji.value.name}:` : char.value);
+
+function computeTitle(event: PointerEvent): void {
+	const title = customEmoji.value
+		? `:${customEmoji.value.name}:`
+		: (getEmojiName(char.value as string) ?? char.value as string);
+	(event.target as HTMLElement).title = title;
+}
 </script>
 
 <style lang="scss" scoped>
diff --git a/packages/client/src/components/global/MkPageHeader.vue b/packages/client/src/components/global/MkPageHeader.vue
index 8e9a32535..ba61a494e 100644
--- a/packages/client/src/components/global/MkPageHeader.vue
+++ b/packages/client/src/components/global/MkPageHeader.vue
@@ -21,7 +21,7 @@
 			</div>
 		</div>
 		<div v-if="!narrow || hideTitle" class="tabs">
-			<button v-for="tab in tabs" :ref="(el) => tabRefs[tab.key] = el" v-tooltip.noDelay="tab.title" class="tab _button" :class="{ active: tab.key != null && tab.key === props.tab }" @mousedown="(ev) => onTabMousedown(tab, ev)" @click="(ev) => onTabClick(tab, ev)">
+			<button v-for="tab in tabs" :ref="(el) => tabRefs[tab.key] = (el as HTMLElement)" v-tooltip.noDelay="tab.title" class="tab _button" :class="{ active: tab.key != null && tab.key === props.tab }" @mousedown="(ev) => onTabMousedown(tab, ev)" @click="(ev) => onTabClick(tab, ev)">
 				<i v-if="tab.icon" class="icon" :class="tab.icon"></i>
 				<span v-if="!tab.iconOnly" class="title">{{ tab.title }}</span>
 			</button>
@@ -37,34 +37,36 @@
 </template>
 
 <script lang="ts" setup>
-import { computed, onMounted, onUnmounted, ref, inject, watch, shallowReactive, nextTick, reactive } from 'vue';
+import { onMounted, onUnmounted, ref, inject, watch, nextTick } from 'vue';
 import tinycolor from 'tinycolor2';
 import { popupMenu } from '@/os';
 import { scrollToTop } from '@/scripts/scroll';
-import { i18n } from '@/i18n';
 import { globalEvents } from '@/events';
 import { injectPageMetadata } from '@/scripts/page-metadata';
 import { $i } from '@/account';
 
 type Tab = {
-	key?: string | null;
+	key: string;
 	title: string;
 	icon?: string;
 	iconOnly?: boolean;
 	onClick?: (ev: MouseEvent) => void;
 };
 
-const props = defineProps<{
+const props = withDefaults(defineProps<{
 	tabs?: Tab[];
 	tab?: string;
 	actions?: {
 		text: string;
 		icon: string;
+		highlighted?: boolean;
 		handler: (ev: MouseEvent) => void;
 	}[];
 	thin?: boolean;
 	displayMyAvatar?: boolean;
-}>();
+}>(), {
+	tabs: () => ([] as Tab[])
+});
 
 const emit = defineEmits<{
 	(ev: 'update:tab', key: string);
@@ -75,13 +77,12 @@ const metadata = injectPageMetadata();
 const hideTitle = inject('shouldOmitHeaderTitle', false);
 const thin_ = props.thin || inject('shouldHeaderThin', false);
 
-const el = $ref<HTMLElement | null>(null);
-const tabRefs = {};
+const el = $ref<HTMLElement | undefined>(undefined);
+const tabRefs: Record<string, HTMLElement | null> = {};
 const tabHighlightEl = $ref<HTMLElement | null>(null);
-const bg = ref(null);
+const bg = ref<string | undefined>(undefined);
 let narrow = $ref(false);
-const height = ref(0);
-const hasTabs = $computed(() => props.tabs && props.tabs.length > 0);
+const hasTabs = $computed(() => props.tabs.length > 0);
 const hasActions = $computed(() => props.actions && props.actions.length > 0);
 const show = $computed(() => {
 	return !hideTitle || hasTabs || hasActions;
@@ -100,7 +101,7 @@ const showTabsPopup = (ev: MouseEvent) => {
 			onTabClick(tab, ev);
 		},
 	}));
-	popupMenu(menu, ev.currentTarget ?? ev.target);
+	popupMenu(menu, ev.currentTarget! as HTMLElement);
 };
 
 const preventDrag = (ev: TouchEvent) => {
@@ -108,7 +109,9 @@ const preventDrag = (ev: TouchEvent) => {
 };
 
 const onClick = () => {
-	scrollToTop(el, { behavior: 'smooth' });
+	if (el) {
+		scrollToTop(el as HTMLElement, { behavior: 'smooth' });
+	}
 };
 
 function onTabMousedown(tab: Tab, ev: MouseEvent): void {
@@ -144,8 +147,8 @@ onMounted(() => {
 
 	watch(() => [props.tab, props.tabs], () => {
 		nextTick(() => {
-			const tabEl = tabRefs[props.tab];
-			if (tabEl && tabHighlightEl) {
+			const tabEl = props.tab ? tabRefs[props.tab] : undefined;
+			if (tabEl && tabHighlightEl && tabEl.parentElement) {
 				// offsetWidth や offsetLeft は少数を丸めてしまうため getBoundingClientRect を使う必要がある
 				// https://developer.mozilla.org/ja/docs/Web/API/HTMLElement/offsetWidth#%E5%80%A4
 				const parentRect = tabEl.parentElement.getBoundingClientRect();
@@ -161,11 +164,11 @@ onMounted(() => {
 	if (el && el.parentElement) {
 		narrow = el.parentElement.offsetWidth < 500;
 		ro = new ResizeObserver((entries, observer) => {
-			if (el.parentElement && document.body.contains(el)) {
+			if (el.parentElement && document.body.contains(el as HTMLElement)) {
 				narrow = el.parentElement.offsetWidth < 500;
 			}
 		});
-		ro.observe(el.parentElement);
+		ro.observe(el.parentElement as HTMLElement);
 	}
 });
 
diff --git a/packages/client/src/pages/admin/overview.federation.vue b/packages/client/src/pages/admin/overview.federation.vue
index 2c688d5c9..71f5a054b 100644
--- a/packages/client/src/pages/admin/overview.federation.vue
+++ b/packages/client/src/pages/admin/overview.federation.vue
@@ -96,9 +96,9 @@ onMounted(async () => {
 	&:global {
 		> .pies {
 			display: grid;
-			grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
-			grid-gap: 16px;
-			margin-bottom: 16px;
+			grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
+			grid-gap: 12px;
+			margin-bottom: 12px;
 
 			> .pie {
 				position: relative;
@@ -126,8 +126,8 @@ onMounted(async () => {
 
 		> .items {
 			display: grid;
-			grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
-			grid-gap: 16px;
+			grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
+			grid-gap: 12px;
 
 			> .item {
 				display: flex;
@@ -160,10 +160,10 @@ onMounted(async () => {
 				}
 
 				> .body {
-					padding: 4px 0;
+					padding: 2px 0;
 
 					> .value {
-						font-size: 1.3em;
+						font-size: 1.25em;
 						font-weight: bold;
 
 						> .diff {
diff --git a/packages/client/src/pages/admin/overview.queue.vue b/packages/client/src/pages/admin/overview.queue.vue
index 9fd799e15..72ebddc72 100644
--- a/packages/client/src/pages/admin/overview.queue.vue
+++ b/packages/client/src/pages/admin/overview.queue.vue
@@ -109,7 +109,7 @@ onUnmounted(() => {
 		> .charts {
 			display: grid;
 			grid-template-columns: 1fr 1fr;
-			gap: 16px;
+			gap: 12px;
 
 			> .chart {
 				min-width: 0;
diff --git a/packages/client/src/pages/admin/overview.stats.vue b/packages/client/src/pages/admin/overview.stats.vue
index f02305101..28c5401ab 100644
--- a/packages/client/src/pages/admin/overview.stats.vue
+++ b/packages/client/src/pages/admin/overview.stats.vue
@@ -81,8 +81,8 @@ onMounted(async () => {
 <style lang="scss" module>
 .root {
 	display: grid;
-	grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
-	grid-gap: 16px;
+	grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
+	grid-gap: 12px;
 
 	&:global {
 		> .item {
@@ -130,10 +130,10 @@ onMounted(async () => {
 			}
 
 			> .body {
-				padding: 4px 0;
+				padding: 2px 0;
 
 				> .value {
-					font-size: 1.3em;
+					font-size: 1.25em;
 					font-weight: bold;
 
 					> .diff {
diff --git a/packages/client/src/scripts/emojilist.ts b/packages/client/src/scripts/emojilist.ts
index 4ce63dc7e..bc52fa7a4 100644
--- a/packages/client/src/scripts/emojilist.ts
+++ b/packages/client/src/scripts/emojilist.ts
@@ -11,3 +11,7 @@ export type UnicodeEmojiDef = {
 import _emojilist from '../emojilist.json';
 
 export const emojilist = _emojilist as UnicodeEmojiDef[];
+
+export function getEmojiName(char: string): string | undefined {
+	return emojilist.find(emo => emo.char === char)?.name;
+}