fix: WebSocket reconnect race, parse error tracking, RPC timeout reduction, vendor chunk split

- F8: Add isReconnecting flag to prevent parallel reconnection attempts
- F9: Track JSON parse errors, force reconnect after 3 consecutive failures
- F11: Reduce RPC timeout to 15s, add jitter to retry backoff
- F12: Add vendor chunk splitting for vue/router/pinia
- F13: DOMPurify already applied to QR SVGs — verified
- F14: Replace O(n) goals alias lookup with Map-based O(1)
- F15: Wrap 7 localStorage.setItem calls in try/catch across 5 stores

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/src/stores/goals.ts

@@ -13,10 +13,20 @@ const APP_ALIASES: Record<string, string[]> = {
   'bitcoin-knots': ['bitcoin', 'bitcoin-core'],
 }
 
+/** Pre-built reverse lookup: variant pkgId → Set of canonical appIds it matches */
+const ALIAS_REVERSE = new Map<string, Set<string>>()
+for (const [canonical, aliases] of Object.entries(APP_ALIASES)) {
+  for (const alias of aliases) {
+    let set = ALIAS_REVERSE.get(alias)
+    if (!set) { set = new Set(); ALIAS_REVERSE.set(alias, set) }
+    set.add(canonical)
+  }
+}
+
 function matchesAppId(pkgId: string, appId: string): boolean {
   if (pkgId === appId) return true
-  const aliases = APP_ALIASES[appId]
-  return aliases ? aliases.includes(pkgId) : false
+  const reverseHits = ALIAS_REVERSE.get(pkgId)
+  return reverseHits ? reverseHits.has(appId) : false
 }
 
 export const useGoalStore = defineStore('goals', () => {
@@ -32,7 +42,7 @@ export const useGoalStore = defineStore('goals', () => {
   }
 
   function save() {
-    localStorage.setItem(STORAGE_KEY, JSON.stringify(progress.value))
+    try { localStorage.setItem(STORAGE_KEY, JSON.stringify(progress.value)) } catch { /* localStorage full or unavailable */ }
   }
 
   function getGoalStatus(goalId: string): GoalStatus {