fundamentals▌

E-E-A-T framework, Core Web Vitals optimization, and Google ranking principles for search visibility. \n \n Covers E-E-A-T signals (experience, expertise, authoritativeness, trustworthiness) as foundational content quality standards \n Details three Core Web Vitals metrics: LCP (loading), INP (interactivity), and CLS (visual stability) with specific performance targets \n Includes technical SEO checklist: XML sitemaps, robots.txt, canonical tags, HTTPS, mobile optimization, and URL structure \n

Build production LangChain agents with create_agent(), tools, and middleware patterns. \n \n Use create_agent() with model, tools list, and system prompt; configure state persistence with checkpointer and thread_id for conversation memory across invocations \n Define tools via @tool decorator (Python) or tool() function (TypeScript) with clear descriptions so agents know when to call them \n Add middleware like HumanInTheLoopMiddleware for approval workflows, custom error handling, and human-in-

Comprehensive guide for migrating to and building with Next.js App Router (13+). \n \n Covers migration from Pages Router including file structure mapping, layout creation, metadata handling, and cleanup steps \n Explains App Router file conventions (page.tsx, layout.tsx, loading.tsx, error.tsx, route.ts) and routing patterns (dynamic routes, catch-all, route groups) \n Details Server Components as the default with async/await support, Client Components with 'use client' directive, and data fetc

Master core Java programming with production-quality patterns.

Optimization for AI-powered search engines.

Essential Three.js scene setup, cameras, renderers, and object hierarchies for 3D web graphics. \n \n Covers scene creation, three camera types (Perspective, Orthographic, Array), renderer configuration with tone mapping and shadow support, and the Object3D hierarchy system \n Includes right-handed coordinate system, transform operations (position, rotation, scale, quaternions), and local vs. world space conversions \n Provides math utilities for Vector3, Matrix4, Quaternion, Euler angles, and C