chore: prepare automation loop for Plan 2 (M8–M20)

- Add PLAN2.md with 116 tasks across M8–M20 with testing gates
- Populate loop/plan.md with all new tasks (30-attempt retry policy)
- Update loop/prompt.md to enforce glass design system and PLAN2.md
- Fix PassphraseDialog to use glass-card/gradient-button design system
- Fix crypto.randomUUID fallback for non-secure contexts
- Fix dev.sh to skip proxy startup if port 3141 already in use
- Fix PWA manifest for Android A2HS (purpose:any, display_override, id)

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

packages/app/src/stores/chat.ts

@@ -1,6 +1,17 @@
 import { defineStore } from 'pinia'
 import { ref, computed, watch } from 'vue'
 import type { Message, Conversation, WebSearchResult } from '@aiui/core/types/message'
+
+function generateId(): string {
+  if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+    return crypto.randomUUID()
+  }
+  // Fallback for non-secure contexts (HTTP over network IP)
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+    const r = (Math.random() * 16) | 0
+    return (c === 'x' ? r : (r & 0x3) | 0x8).toString(16)
+  })
+}
 import {
   saveConversation as idbSave,
   loadAllConversations as idbLoadAll,
@@ -158,7 +169,7 @@ export const useChatStore = defineStore('chat', () => {
   )
 
   function createConversation(title = 'New Chat'): string {
-    const id = crypto.randomUUID()
+    const id = generateId()
     const conversation: Conversation = {
       id,
       title,
@@ -178,7 +189,7 @@ export const useChatStore = defineStore('chat', () => {
 
     const msg: Message = {
       ...message,
-      id: crypto.randomUUID(),
+      id: generateId(),
       timestamp: Date.now(),
     }
     conv.messages.push(msg)