* perf: drastically improve cold-start, bundle size, and streaming performance
Cold-start optimizations:
- main.tsx: Remove blocking await on prefs I/O — render immediately with
defaults, hydrate persisted settings asynchronously. Cuts 50-200ms from
time-to-first-paint.
- bootstrap.ts: Split directory bootstrap into 3 phases:
* Phase 1 (blocking): path, config, provider, session status — minimum
data needed to render UI. Mark status complete after this phase.
path.get and session.status must both succeed; they have no fallback.
* Phase 2 (deferred): agents, commands, mcp, lsp, vcs, questions,
permissions — fetched after first paint without blocking.
* Phase 3 (lazy): session messages — loaded without blocking init.
- App.tsx: Keep identical provider tree before/after init to prevent
full subtree remount when isInitialized flips. FireworksProvider and
VoiceProvider are lightweight shells; overlays deferred until init.
Bundle-size optimizations:
- App.tsx + MainLayout.tsx + VSCodeLayout.tsx: Code-split heavy views
(SettingsView, GitView, DiffView, TerminalView, FilesView, PlanView,
OnboardingScreen, SettingsWindow, MultiRunWindow) with React.lazy.
Views load on demand when user switches panels.
- vite.config.ts: Lower chunkSizeWarningLimit from 1200KB to 500KB.
Streaming render optimizations:
- streaming.ts: Throttle streaming store writes ~60Hz → ~1Hz. Busy-session
only scan (Set, O(1)).
- MessageList.tsx: Lower virtualization threshold 40 → 15.
- ChatMessage.tsx: React.memo with areRenderRelevantMessagesEqual.
- MarkdownRenderer.tsx: React.memo with explicit prop comparators.
* fix: address Greptile review feedback on bootstrap and provider tree
- bootstrap.ts: Tighten Phase 1 error guard. path.get and session.status
must both succeed; they have no global fallback.
- bootstrap.ts: Replace dead .catch() on Promise.allSettled() with .then()
that inspects individual results for errors.
- App.tsx: Keep identical provider tree before/after init to prevent full
subtree remount when isInitialized flips.
* fix: ensure settings watchers always start and harden bootstrap phase-1 guard
- main.tsx: Start appearance/model/typography watchers unconditionally
after initializing appearance preferences. Previously they only started
inside the secondary settings Promise.all().then(), so a transient I/O
failure would silently leave auto-save disabled for the entire session.
- VSCodeLayout.tsx: Move React.lazy SettingsView const after all imports
to satisfy ESLint import/first rule.
- bootstrap.ts: Replace fragile hardcoded array indices in Phase 1 guard
with destructuring so reordering the Promise.allSettled array won't
silently break the critical-failure check.
---------
Co-authored-by: Shyamalan Kannan <yabuku@Shyamalans-MacBook-Pro.local>
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
