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Open source

Public artifacts

Production-shaped RAG, a 19-tool Chrome extension, and this site as a running AI product — not a brochure.
3
Production Artifacts

Production-grade RAG SaaS, MV3 DevTools extensions, and performance engines

19
Injected Debugging Tools

Consolidated visual debugging suite running in isolated Shadow DOM

10,000+
Doc Ingestion Capacity

Hybrid vector + BM25 search fused with Reciprocal Rank Fusion

60 FPS
Off-Thread Profiling

3 dedicated Web Workers processing 10,000+ React fiber nodes

DevTools & Browser ExtensionsManifest V3 • Shadow DOM

Frontend Dev Helper — Browser Extension DevTools Suite

Live SiteCode

Manifest V3 extension that replaces 8+ legacy tools with 19 visual debuggers — DOM outliner, z-index 3D, contrast, a11y audit, and network analyzer.

19
Visual Debugging Tools
Single Shadow DOM isolated extension replacing 8+ legacy tools
0
Host CSS Leakage
Strict Shadow DOM boundary isolation across any page styles
2s
DOM Audit Timeout Guard
requestIdleCallback yielding for non-blocking 50+ issue audit
MV3 Tri-Context Isolated EngineShadow DOM Overlays with Message Router Promise Serialization
Host Page
• Target Application
• Shadow DOM Root
• Injected Panels
Content Scripts
• 51 Tool Singletons
• TreeWalker DOM Engine
• Canvas Flame Graph
Service Worker
• MessageRouter
• Promise Serialization
• chrome.alarms
Popup & AI
• React 18 Dashboard
• OpenRouter API
• Stripe Checkout
TypeScriptReact 18Chrome MV3Firefox MV2ViteCRXJSTailwind CSSZodShadow DOMWeb WorkersVitestPlaywrightBiomeStripe
Deep Dive
AI & RAG PlatformsProduction SaaS Boilerplate

RAG Starter Kit — Production-Grade AI Document Chat Platform

Live SiteCode

Production-shaped, self-hosted RAG chatbot boilerplate: streaming chat, voice I/O, multi-user rooms, S3, Playwright E2E, one-click Vercel deploy.

RRF (k=60)
Hybrid Rank Fusion
Parallel vector cosine similarity + BM25 keyword search
12+
Binary Formats Validated
Magic-bytes validation + ClamAV + Tesseract OCR fallback
100%
Free-Tier Native Defaults
Google Gemini embeddings + OpenRouter Gemma 3 12B
Enterprise RAG & Hybrid Ingestion EngineParameterized pgvector SQL with Reciprocal Rank Fusion
Ingestion Core
• Magic-Bytes Binary Check
• ClamAV Scan
• Tesseract.js OCR
Storage & Vector
• PostgreSQL 16
• pgvector (Parameterized SQL)
• Redis Cache
Retrieval & Fusion
• Cosine Similarity
• BM25 Keyword Search
• RRF Fusion (k=60)
Enterprise Ops
• NextAuth + SAML 2.0
• Inngest Job Queue
• OpenTelemetry Tracing
Next.js 15React 19TypeScriptPostgreSQLpgvectorPrismaRedisVercel AI SDKLangChain.jsOpenAIGoogle GeminiInngestAblyNextAuth v5SAML 2.0StripeOpenTelemetryTailwind CSS 4shadcn/uiZodCloudinaryTesseract.jsVitestPlaywright
Deep Dive
Performance EngineeringDevTools Hook • 60 FPS

React Perf Profiler — DevTools Extension for React Performance Engineering

Live SiteCode

A Chrome and Firefox DevTools extension that hooks directly into __REACT_DEVTOOLS_GLOBAL_HOOK__ to profile React component render behavior at scale — detecting wasted renders with fiber bitmask decoding, quantifying memoization effectiveness, parsing RSC wire payloads, and predicting render times with TensorFlow.js. All heavy analysis is offloaded to three dedicated Web Workers, keeping the DevTools panel at 60fps across component trees with 10,000+ nodes.

0x040 | 0x1000
Fiber Flags Bitmask
React 17/18 cross-version context-change bitmask decoding
3
Off-Thread Web Workers
Zero dropped frames across 10,000+ component nodes
O(1)
LRU Component Cache
Map insertion-order zero-dependency bounded cache
React Fiber Hooks & Off-Thread ProfilerDirect Global Hook Interception with Web Worker Analysis
Fiber Bridge
• __REACT_DEVTOOLS_GLOBAL_HOOK__
• Zero-Instrumentation Interceptor
Bitmask Decoder
• 0x040 | 0x1000 Flag Mask
• Shallow Props/State Diff
• Wasted Render Map
Off-Thread Workers
• Worker 1: Render Analyzer
• Worker 2: RSC Parser
• Worker 3: Timeline
DevTools UI
• Canvas Flame Graph (0.1×–10×)
• CircularBuffer
• CI Budget Validator
TypeScriptReact 18Chrome MV3Firefox MV2ZustandD3.jsThree.jsReact Three FiberTensorFlow.jsWeb WorkersIndexedDBViteCRXJSImmerReselectVitestPlaywrightBiome
Deep Dive

Production Engineering You Can Run Today

Every repository here is an active production artifact with full CI, containerization, security isolation, and reproducible test suites — not code written for a pitch deck.

Schedule Architectural ReviewExplore Production Seats
rejisterjack

Full-stack engineer who owns production agentic systems — tenancy, tool-calling evals, and supply-chain-hardened delivery.

rejisterjack@gmail.com
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