DIGITAL_WORKSHOPDIGITAL_WORKSHOPDIGITAL_WORKSHOP

Personal archive of LeetCode solutions in C++, sorted by difficulty and auto-committed daily.

This repository is used to submit assignments for the Coding Club Web Development Bootcamp, following a clear structure and pull request workflow.

Messy spreadsheets, normalized instantly

Industrial Excel parser for the LatSpace ESG platform: Groq-hosted LLM (llama-3.3-70b) maps inconsistent column headers to a standardized parameter registry with confidence scores, chunked value parsing, domain validation, and a human-in-the-loop review step before exporting clean JSON or CSV.

Autonomous agents, on-chain accountable

Production-grade autonomous AI wallet system: LangChain multi-agent orchestration (Planner, Executor, Evaluator, Communicator), ERC-4337 Safe smart accounts, on-chain decision provenance logged before execution, and a WebSocket-powered real-time dashboard across Ethereum Sepolia, Polygon, and Base.

An OS built from nothing

Fully from-scratch x86 OS kernel combining core systems engineering with practical data structure integration—custom bootloader, protected mode, IDT, physical frame allocator, buddy-tree heap, round-robin and priority schedulers, PS/2 keyboard driver, and DSA-backed subsystems (trie, hash map, circular queue) woven into every module.

Natural language control for Android

AI-powered Android automation agent built for blind and visually impaired users: ReAct loop captures screenshots, reasoning via Groq Llama 4 Scout (with Gemini fallback), and executes device actions over ADB—369 passing tests, thread-safe circular API-key rotation, and support for local emulators or cloud device farms.

Empathetic AI companion for elders

Comprehensive eldercare platform across three apps: Kotlin voice-first Android app (medication manager, SOS, AI chat), React caregiver web dashboard (emotion analytics, meal planning, alert monitoring), and a FastAPI + Prisma + PostgreSQL backend with Gemini/Groq AI and role-based access (Elder, Caregiver, Doctor, Family).

One photo becomes a 3D world

End-to-end AI pipeline converting a single 2D image into a production-quality 3D Gaussian Splat: TripoSR initial reconstruction → SyncDreamer 16-view synthesis → SDXL Lightning + ControlNet enhancement → gsplat optimization → MVCRM multi-view consistency refinement; runs in ~30 minutes on a free Colab T4 GPU.

Deterministic allergen detection for food safety

Production-ready food allergen detection system with rule-based classification, Tesseract OCR for label scanning, spaCy NLP for ingredient parsing, and deterministic risk scoring. FastAPI backend with comprehensive REST API, Flutter mobile app with camera integration, and Supabase database—designed for reliable, explainable allergen detection without machine learning complexity.

Decentralized swarm threat detection

Five-agent AI swarm (Sentinel, Oracle, Compliance, ZK-Prover, Consensus) detecting DeFi threats on Cardano in real-time: CrewAI sequential reasoning, Masumi-powered micropayments and reputation, Hydra L2-accelerated consensus, Midnight ZK proofs for privacy, and immutable ThreatProof Capsule output on Cardano L1. Submitted to Cardano Hackathon Asia 2025.

Stage-ready quiz for live events

Cinematic live quiz orchestration platform for device-free school outreach events: animated question cards, real-time auto-sorting leaderboard, quizmaster participant scoring controls (+4/−2), and a gold-accented winners finale screen—fully offline on Next.js + Dockerized PostgreSQL.

Detect the unseen, before it strikes

Multi-layer zero-day threat detection pipeline: LSTM Autoencoder learns normal Sysmon event sequences and flags behavioral deviations, Graph Neural Network models network topology from tshark flows to catch lateral movement, and an ensemble scorer fuses both signals into a single threat score served via FastAPI.

Topics into rich multimedia lessons

AI-powered educational content platform transforming raw topics into multi-modal learning material: Gemini-generated animated presentations, ElevenLabs voice narration, AI-synthesized diagrams, interactive React Flow mind maps, executable code snippets, gamified quizzes, and one-click export to PDF, PowerPoint, or synchronized video lectures.

Prove your AI creation, on-chain

Decentralized proof-of-authorship for AI-generated content: SHA-256 content hashing, Ethereum Sepolia Soulbound NFT (ERC-721) minting, W3C Verifiable Credentials, DID-based identity, IPFS storage via Pinata, Gemini-powered originality scoring, and semantic search across existing proofs—making AI authorship disputes cryptographically resolvable.

Enterprise collaboration, zero‑trust enforced

Full‑stack collaboration suite: tree‑based hierarchical RBAC (NestJS, Prisma), real‑time Socket.IO messaging with presence indicators, secure file storage, and comprehensive audit trails for compliance—modular, typed, production‑ready.

AI‑powered learning, gamified

Personalized learning platform: Gemini‑generated adaptive paths, habit challenges with progress analytics, study buddy matching, and gamification engine (achievements, leaderboards, quizzes)—structure and feedback for self‑directed learners.

Playful precision physics

Focused 3D mini‑golf slice: bespoke physics integration, multi‑layer aim assist (trail, ghost, ticks), and friction‑free scoring loops with per‑level leaderboards.

Organise. Enrich. Retrieve.

Media workspace prototype exploring role‑scoped access, dual taxonomy (albums + tags), and early search pathways for structured retrieval.

Content as composable events

Modern re‑imagining of Chyrp: event bus core, “feather” post types, role‑based boundaries, and typed persistence via Prisma + Supabase.

Turning raw ideas into signal

Real‑time idea evaluation platform: rubric‑driven Gemini scoring, resilient async queueing, and a carefully scoped leaderboard that rewards quality without leaking private detail.

Conversation that actually remembers

Dual‑LLM conversational agent blending short‑turn context with durable semantic memory; experiments in continuity, recall stitching, and tone‑aware reply shaping.

Deadlines that don’t drift

Telegram productivity bot parsing natural language into anchored tasks, staging multi‑phase reminder cascades tuned to urgency.

Soil insight sketch

Early concept: conversational surface for contextual bio‑fertilizer dosage hints, pairing lightweight models with exploratory advisory framing.

Edge security pattern capture

ESP32 smart lock prototype capturing multi‑touch & knock patterns, generating Edge Impulse‑ready datasets while offering remote status + control hooks.