Personal Projects
and Technical Lab

DAG-based task dependency resolution with per-step queue routing over AMQP. RabbitMQ virtual hosts, heartbeats, and per-workflow ephemeral result queues. Multi-worker dispatch (Python + Node.js) coordinated through a shared state store.

Dual PostgreSQL pool (catalog + runtime) with set_config('app.tenant_id') session-variable RLS for multi-tenant isolation. JSONB columns, UUID PKs, versioned migrations, pool tuning (MaxOpenConns / ConnMaxLifetime).

AES-256-CBC with crypto.randomBytes(16) IV per call, SHA-256 key derivation, bcrypt hashing. OWASP Top 10 input sanitization at every boundary. Audit logging, rate limiting, boot-time env validation with hard process exit on failure.

Go internal/ package isolation. Service layer + repository pattern. Multi-tier FastAPI + SQLAlchemy + Pydantic v2 architecture. 140+ diagnostic rules across 20+ categories with deterministic scoring. AI policy gating with per-tenant budget enforcement.

LLM intent parsing with graceful degradation to pattern-based fallback. Full voice pipeline: hotword → Whisper STT → LLM NLU → TTS. Intel NPU acceleration. Anthropic API AI-gated deployment decisions with token budget controls. OpenAI + Anthropic provider abstraction.

Real-time MediaPipe hand landmark detection (21 keypoints) piped into Three.js scene transforms — webcam-only gesture control of 3D objects, no hardware required. WebGL via React Three Fiber, Zustand scene state, Vite HMR build pipeline.

Boot readiness gating blocks all commands until subsystems initialize. process.on('uncaughtException') with security-aware logging. DB health check with timeout + retry before accepting traffic. Restart-safe idempotent event keys. CloudWatch on AWS EC2.

AES-256-CBC via Node.js native crypto — random IV per operation (never reused), correct IV-prepend format, SHA-256 key derivation before cipher use. Mod signature verification with public key validation. Encrypted backup pipeline with isolated key management.

958+ billion valid character combinations from 139 feature axes — too large to enumerate, requiring constraint-based generation. Age-gate content tiering as a policy layer over the combination engine. Asset pipeline resolves each configuration to textures + models.