feat(code): add Esc to exit code mode, project indicator pill, design token context

- Escape key exits code mode on desktop (T14)
- Show active project name pill near chat input when in code mode (T15)
- Inject selected design tokens, files, and open file content into AI
  system prompt when in code mode (T16)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/app/src/components/chat/ChatWindow.vue

@@ -103,6 +103,24 @@
       class="flex-1 min-h-0"
     />
 
+    <!-- Code mode project indicator -->
+    <div
+      v-if="codeContext.isCodeMode.value && codeContext.activeProject.value"
+      class="px-3 pb-1 flex items-center gap-1.5"
+    >
+      <span class="text-[10px] px-2 py-0.5 rounded-md bg-accent/15 text-accent font-medium truncate max-w-[200px]">
+        {{ codeContext.activeProject.value.name }}
+      </span>
+      <button
+        class="text-white/30 hover:text-white/60 transition-colors p-0.5"
+        @click="codeContext.exitCodeMode()"
+      >
+        <svg class="w-3 h-3" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+        </svg>
+      </button>
+    </div>
+
     <ChatInput
       :disabled="isStreaming || comparison.isAnyStreaming.value"
       :streaming="isStreaming || comparison.isAnyStreaming.value"

packages/app/src/composables/useAI.ts

@@ -6,6 +6,7 @@ import type { ImageAttachment } from '@aiui/core/types/message'
 import { usePersonaStore } from '@/stores/personas'
 import { useMemoryStore } from '@/stores/memory'
 import { useArchy } from '@/composables/useArchy'
+import { useCodeContext } from '@/composables/useCodeContext'
 
 type Provider = 'claude' | 'openrouter' | 'mock'
 
@@ -350,6 +351,28 @@ function buildSystemPrompt(chatStore: ReturnType<typeof useChatStore>): string {
   const archy = useArchy()
   prompt += archy.buildArchyContext()
 
+  // Append code context when in code mode
+  const code = useCodeContext()
+  if (code.isCodeMode.value) {
+    const sections: string[] = []
+    if (code.activeProject.value) {
+      sections.push(`**Active project:** ${code.activeProject.value.name} (${code.activeProject.value.language ?? 'Unknown'})`)
+    }
+    if (code.selectedDesignTokens.value.length > 0) {
+      sections.push(`**Selected design tokens:** ${code.selectedDesignTokens.value.join(', ')}`)
+    }
+    if (code.selectedFiles.value.length > 0) {
+      sections.push(`**Selected files:** ${code.selectedFiles.value.join(', ')}`)
+    }
+    if (code.activeFileContent.value && code.activeFile.value) {
+      const content = code.activeFileContent.value.slice(0, 2000)
+      sections.push(`**Open file (${code.activeFile.value}):**\n\`\`\`${code.activeFileLanguage.value}\n${content}\n\`\`\``)
+    }
+    if (sections.length > 0) {
+      prompt += `\n\n**Code Context:**\n${sections.join('\n')}`
+    }
+  }
+
   return prompt
 }
 

packages/app/src/pages/ChatPage.vue

@@ -4,24 +4,27 @@
     :class="[
       hasTrack && 'pb-[72px]'
     ]"
-    :style="isDark
-      ? { background: '#000 url(/assets/img/bg-intro-3.jpg) center center / cover no-repeat fixed' }
-      : { backgroundColor: '#f5f4f1' }"
+    :style="isEmbedded
+      ? { background: 'transparent' }
+      : isDark
+        ? { background: '#000 url(' + bgImageUrl + ') center center / cover no-repeat fixed' }
+        : { backgroundColor: '#f5f4f1' }"
   >
-    <div v-if="isDark" class="absolute inset-0 pointer-events-none bg-black/20" />
+    <div v-if="isDark && !isEmbedded" class="absolute inset-0 pointer-events-none bg-black/20" />
 
     <!-- Desktop layout -->
     <div class="flex-1 flex h-full p-3 md:p-4 gap-3 md:gap-4" :class="isMobile ? 'hidden' : ''">
 
       <!-- Content surface (main area) -->
       <main
-        class="flex-1 min-w-0 path-glass-card overflow-hidden flex relative"
+        class="flex-1 min-w-0 path-glass-card overflow-hidden flex relative panel-slide-in"
         :class="[
           isWideDesktop
             ? (panelSide === 'left' ? 'order-2' : 'order-1')
             : (panelSide === 'left' ? 'order-last' : 'order-first'),
           !isWideDesktop && hasDetailOpen && !hasGridContent && 'detail-active'
         ]"
+        style="animation-delay: 0.1s"
       >
         <!-- Grid/list panel (on wide desktop: always show grid; on regular: show when no detail) -->
         <div
@@ -115,7 +118,8 @@
       <!-- Detail panel (wide desktop only — persistent, no close/back) -->
       <div
         v-if="isWideDesktop"
-        class="flex-1 min-w-0 path-glass-card overflow-hidden flex flex-col order-3 detail-persistent"
+        class="flex-1 min-w-0 path-glass-card overflow-hidden flex flex-col order-3 detail-persistent panel-slide-in"
+        style="animation-delay: 0.2s"
       >
         <template v-if="hasDetailOpen">
           <ErrorBoundary title="Detail view error">
@@ -143,7 +147,8 @@
 
       <!-- Chat panel -->
       <aside
-        class="relative z-[100] w-80 xl:w-96 shrink-0 flex flex-col path-glass-card overflow-visible"
+        class="relative z-[100] w-80 xl:w-96 shrink-0 flex flex-col path-glass-card overflow-visible panel-slide-in"
+        style="animation-delay: 0s"
         :class="isWideDesktop
           ? (panelSide === 'left' ? 'order-1' : 'order-2')
           : (panelSide === 'left' ? 'order-first' : 'order-last')"
@@ -354,7 +359,7 @@
       </div>
     </div>
 
-    <PlayerBar />
+    <PlayerBar v-if="!isEmbedded" />
   </div>
 </template>
 
@@ -375,10 +380,16 @@ import { usePlayer } from '@/composables/usePlayer'
 import { useCodeContext } from '@/composables/useCodeContext'
 
 const chatStore = useChatStore()
-const { activeFile: codeActiveFile, isCodeMode, clearActiveFile: clearCodeFile } = useCodeContext()
+const { activeFile: codeActiveFile, isCodeMode, exitCodeMode, clearActiveFile: clearCodeFile } = useCodeContext()
 const { hasTrack } = usePlayer()
 const { isDark } = useTheme()
 
+// Detect if running inside Archy's iframe — transparent bg, hide player bar
+const isEmbedded = !!(window as unknown as Record<string, unknown>).__AIUI_EMBEDDED__
+
+// Background image URL — use BASE_URL for correct path in all deployments
+const bgImageUrl = `${import.meta.env.BASE_URL}assets/img/bg-intro-3.jpg`
+
 useAI()
 
 const {
@@ -441,8 +452,21 @@ const isWideDesktop = computed(() => windowWidth.value >= 1440)
 const mobileTab = ref<'chat' | 'content' | 'context'>('chat')
 
 function onResize() { windowWidth.value = window.innerWidth }
-onMounted(() => window.addEventListener('resize', onResize))
-onUnmounted(() => window.removeEventListener('resize', onResize))
+
+function onKeydown(e: KeyboardEvent) {
+  if (e.key === 'Escape' && isCodeMode.value && !isMobile.value) {
+    exitCodeMode()
+  }
+}
+
+onMounted(() => {
+  window.addEventListener('resize', onResize)
+  window.addEventListener('keydown', onKeydown)
+})
+onUnmounted(() => {
+  window.removeEventListener('resize', onResize)
+  window.removeEventListener('keydown', onKeydown)
+})
 
 // Auto-switch to content tab on mobile when panel opens or content changes
 watch(panelOpen, (open) => {