Piyush Rathore

Validated four-action AI protocol — write, mkdir, delete, shell — with path checks that reject traversal before anything touches the filesystem.

One adapter across three model providers: Gemini, OpenRouter, and local OpenAI-compatible servers.

WebRTC peer sessions with chat, audio/video, and 256 KB chunked file transfer behind a windowed ACK.

Focus-first interface that keeps the current task front and center.

REST API built with Node.js and TypeScript, with Redis-backed caching.

Deployed in production on DigitalOcean with Bun in the toolchain.

Budget and goal tracking built around real spending behaviour.

Type-safe data layer with Prisma and a React/Next.js interface.

Shipped end to end: schema, API, UI, and deployment.

Ten drawing element types with live cursors, selections, undo/redo, and admin/editor/viewer roles enforced on the server.

Drag updates throttled to ~30/sec and snapshots debounced to 1.5s, collapsing hundreds of writes per drag into one.

Survives dropped connections with exponential backoff and a 500-operation offline queue that replays on reconnect.

Every balance change runs inside a PostgreSQL transaction with SELECT ... FOR UPDATE row locks, so concurrent debits cannot race.

Amounts stored as integer paise rather than floats, so rounding drift never accumulates.

Nine-model schema covering wallets, transfers, payment links, merchant customers, payments, and settlements.