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/data/Avatar.vue

@@ -0,0 +1,72 @@
+<script setup lang="ts">
+/**
+ * Avatar — player / operator avatar. Renders an image, or falls back to initials.
+ * Optional status dot (online / offline / warn / idle) sits bottom-right.
+ */
+import { computed } from 'vue'
+
+const props = withDefaults(
+  defineProps<{
+    name?: string
+    src?: string
+    size?: number
+    shape?: 'rounded' | 'circle'
+    status?: 'online' | 'offline' | 'warn' | 'idle'
+  }>(),
+  { name: '', size: 32, shape: 'rounded' },
+)
+
+const TONE: Record<string, string> = {
+  online: 'var(--status-online)',
+  offline: 'var(--status-offline)',
+  warn: 'var(--status-warn)',
+  idle: 'var(--text-muted)',
+}
+
+const initials = computed(() =>
+  props.name
+    .split(/\s+/)
+    .filter(Boolean)
+    .slice(0, 2)
+    .map(w => w[0] ?? '')
+    .join('')
+    .toUpperCase() || '?',
+)
+
+const dotSize = computed(() => Math.max(7, Math.round(props.size * 0.28)))
+const dotColor = computed(() => (props.status ? (TONE[props.status] ?? TONE.idle) : ''))
+</script>
+
+<template>
+  <span
+    class="cc-avatar"
+    :class="shape === 'circle' && 'cc-avatar--circle'"
+    :style="{
+      width: size + 'px',
+      height: size + 'px',
+      fontSize: Math.round(size * 0.4) + 'px',
+    }"
+  >
+    <img v-if="src" :src="src" :alt="name" />
+    <template v-else>{{ initials }}</template>
+    <span
+      v-if="status"
+      class="cc-avatar__status"
+      :style="{ width: dotSize + 'px', height: dotSize + 'px', background: dotColor }"
+    />
+  </span>
+</template>
+
+<style>
+.cc-avatar {
+  position: relative; display: inline-flex; align-items: center; justify-content: center; flex: none;
+  border-radius: var(--radius-md); background: var(--surface-active); color: var(--text-secondary);
+  font-family: var(--font-mono); font-weight: 600; overflow: visible; box-shadow: var(--ring-default);
+}
+.cc-avatar--circle { border-radius: 50%; }
+.cc-avatar img { width: 100%; height: 100%; object-fit: cover; border-radius: inherit; }
+.cc-avatar__status {
+  position: absolute; right: -2px; bottom: -2px; border-radius: 50%;
+  box-shadow: 0 0 0 2px var(--surface-base);
+}
+</style>