feat(redesign): design-system tokens, 23 Vue components, game-aware shell + Fleet/Solo dashboard

Tokens ported 1:1 from the Claude Design bundle (colors/game-themes/type/spacing/elevation/motion/fonts) with the data-theme/data-game theming contract via useThemeGame (+ cc-skin-swap repaint guard). 23 design-system components reimplemented as Vue SFCs (core/forms/data/navigation/feedback/brand). DashboardLayout rebuilt as the game-aware shell (GameSwitcher, grouped nav with permission gating preserved, agent-health footer, topbar). DashboardView: Fleet + Solo with per-game GAME_FIELDS rows and the themed ECharts PlayersChart; Solo wired to the real server store, Fleet on representative data pending the multi-instance backend. All four game skins (Rust/Dune/Conan/Soulmask). vue-tsc + vite build green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/components/ds/feedback/Alert.vue

@@ -0,0 +1,86 @@
+<script setup lang="ts">
+/**
+ * Alert — contextual inline alert strip.
+ * Tones: info | warn | danger | online | accent | neutral.
+ * Pass `title` for a bold heading, default slot for body text, `actions` slot
+ * for inline action buttons. Set `dismissible` to show an × ghost button that
+ * emits `dismiss`.
+ */
+import Icon from '@/components/ds/core/Icon.vue'
+
+type Tone = 'info' | 'warn' | 'danger' | 'online' | 'accent' | 'neutral'
+
+const ICONS: Record<Tone, string> = {
+  info: 'info',
+  warn: 'triangle-alert',
+  danger: 'octagon-alert',
+  online: 'circle-check',
+  accent: 'sparkles',
+  neutral: 'info',
+}
+
+const props = withDefaults(
+  defineProps<{
+    tone?: Tone
+    title?: string
+    dismissible?: boolean
+    icon?: string
+  }>(),
+  { tone: 'info', dismissible: false },
+)
+
+defineEmits<{ dismiss: [] }>()
+</script>
+
+<template>
+  <div
+    :class="['cc-alert', 'cc-alert--' + tone]"
+    role="status"
+  >
+    <span class="cc-alert__icon">
+      <Icon :name="icon ?? ICONS[tone]" :size="17" :stroke-width="2" />
+    </span>
+    <div class="cc-alert__main">
+      <div v-if="title" class="cc-alert__title">{{ title }}</div>
+      <div v-if="$slots.default" class="cc-alert__body"><slot /></div>
+      <div v-if="$slots.actions" class="cc-alert__actions"><slot name="actions" /></div>
+    </div>
+    <button
+      v-if="dismissible"
+      class="cc-alert__dismiss"
+      type="button"
+      aria-label="Dismiss"
+      @click="$emit('dismiss')"
+    >
+      <Icon name="x" :size="15" :stroke-width="2.25" />
+    </button>
+  </div>
+</template>
+
+<style>
+.cc-alert { display:flex; gap:11px; padding:12px 13px; border-radius:var(--radius-md); background:var(--surface-raised); box-shadow:var(--ring-default); }
+.cc-alert__icon { flex:none; margin-top:1px; }
+.cc-alert__main { flex:1; min-width:0; display:flex; flex-direction:column; gap:3px; }
+.cc-alert__title { font-size:var(--text-sm); font-weight:600; color:var(--text-primary); }
+.cc-alert__body { font-size:var(--text-xs); color:var(--text-secondary); line-height:1.5; }
+.cc-alert__actions { display:flex; gap:8px; margin-top:8px; }
+.cc-alert--info { background:var(--status-info-soft); box-shadow: inset 0 0 0 1px var(--status-info-border); }
+.cc-alert--info .cc-alert__icon { color:var(--status-info); }
+.cc-alert--warn { background:var(--status-warn-soft); box-shadow: inset 0 0 0 1px var(--status-warn-border); }
+.cc-alert--warn .cc-alert__icon { color:var(--status-warn); }
+.cc-alert--danger { background:var(--status-offline-soft); box-shadow: inset 0 0 0 1px var(--status-offline-border); }
+.cc-alert--danger .cc-alert__icon { color:var(--status-offline); }
+.cc-alert--online { background:var(--status-online-soft); box-shadow: inset 0 0 0 1px var(--status-online-border); }
+.cc-alert--online .cc-alert__icon { color:var(--status-online); }
+.cc-alert--accent { background:var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent-border); }
+.cc-alert--accent .cc-alert__icon { color:var(--accent-text); }
+.cc-alert__dismiss {
+  flex: none; display:inline-flex; align-items:center; justify-content:center;
+  width:26px; height:26px; border-radius:var(--radius-sm); border:none; cursor:pointer;
+  background:transparent; color:var(--text-secondary);
+  transition: var(--transition-colors);
+  margin-top:-3px; margin-right:-3px;
+}
+.cc-alert__dismiss:hover { background:var(--surface-hover); color:var(--text-primary); }
+.cc-alert__dismiss:focus-visible { outline:none; box-shadow:var(--focus-ring); }
+</style>