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perf: V8 compile cache, lazy-load WebGL, preload hints, batch tmux reconciliation

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- Enable NODE_COMPILE_CACHE in systemd service and npm start for 10-20% faster cold starts
- Lazy-load xterm-addon-webgl.min.js (244KB) only on desktop — mobile never downloads it
- Add <link rel="preload"> hints for critical scripts (xterm, constants, app) in <head>
- Replace per-session tmux subprocess calls with single batch `list-panes -a` call
  (N*2+1+M execSync calls → 1 for reconcileSessions)
- Fix CLAUDE.md frontend module count (10 → 11)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
arkon
2026-03-14 19:20:44 +01:00
co-authored by Claude Opus 4.6
parent 7175e4b350
commit 88c415fc37
7 changed files with 157 additions and 62 deletions
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src/web/public/app.js
+25 -11
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@@ -571,6 +571,20 @@ class CodemanApp {
document.body.classList.add('app-loaded');
}
_initWebGL() {
if (typeof WebglAddon === 'undefined') return;
try {
this._webglAddon = new WebglAddon.WebglAddon();
this._webglAddon.onContextLoss(() => {
console.error('[CRASH-DIAG] WebGL context LOST — falling back to canvas renderer');
this._webglAddon.dispose();
this._webglAddon = null;
});
this.terminal.loadAddon(this._webglAddon);
console.log('[CRASH-DIAG] WebGL renderer enabled');
} catch (_e) { /* WebGL2 unavailable — canvas renderer used */ }
}
// ═══════════════════════════════════════════════════════════════
// Terminal Setup — xterm.js config and input handling
// ═══════════════════════════════════════════════════════════════
@@ -641,19 +655,19 @@ class CodemanApp {
// but the 48KB/frame flush cap in flushPendingWrites() now prevents
// oversized terminal.write() calls that triggered the stalls.
// Disable with ?nowebgl URL param if GPU issues return.
// Lazy-loaded: script downloaded only on desktop (saves 244KB on mobile).
this._webglAddon = null;
const skipWebGL = MobileDetection.getDeviceType() !== 'desktop';
if (!skipWebGL && !new URLSearchParams(location.search).has('nowebgl') && typeof WebglAddon !== 'undefined') {
try {
this._webglAddon = new WebglAddon.WebglAddon();
this._webglAddon.onContextLoss(() => {
console.error('[CRASH-DIAG] WebGL context LOST — falling back to canvas renderer');
this._webglAddon.dispose();
this._webglAddon = null;
});
this.terminal.loadAddon(this._webglAddon);
console.log('[CRASH-DIAG] WebGL renderer enabled via ?webgl param');
} catch (_e) { /* WebGL2 unavailable — canvas renderer used */ }
if (!skipWebGL && !new URLSearchParams(location.search).has('nowebgl')) {
if (typeof WebglAddon !== 'undefined') {
this._initWebGL();
} else {
// Lazy-load WebGL addon — not bundled in <head> to avoid blocking mobile
const wglScript = document.createElement('script');
wglScript.src = 'vendor/xterm-addon-webgl.min.js';
wglScript.onload = () => this._initWebGL();
document.head.appendChild(wglScript);
}
}
this._localEchoOverlay = new LocalEchoOverlay(this.terminal);