Harness-engineering perf-largest-contentful-paint

name: perf-largest-contentful-paint version: '1.0.0' description: LCP measurement — root causes, sub-part timing, optimization strategies for the largest visible element stability: static cognitive_mode: advisory-guide type: knowledge tier: 3 triggers:

• manual platforms:
• claude-code
• gemini-cli
• cursor
• codex tools: [] paths: [] related_skills:
• perf-critical-rendering-path
• perf-dom-parsing
• perf-interaction-to-next-paint
• perf-cumulative-layout-shift
• perf-performance-api
• mobile-performance-patterns
• angular-performance-patterns stack_signals: [] keywords:
• LCP
• largest contentful paint
• Core Web Vitals
• TTFB
• resource load delay
• render delay
• image optimization
• preload
• fetchpriority metadata: author: community state: persistent: false files: [] depends_on: []