VSCodeMobile - Portfolio

Security

Multi-Layer Defense

Security-first architecture with five defensive layers. Every request passes through path traversal protection, rate limiting, and audit trails before reaching application logic.

Path Traversal Protection CRITICAL

Sanitizes all file paths to prevent directory escape attacks. Normalizes, validates, and rejects any path that attempts to access files outside the workspace.

Rate Limiting HIGH

Per-route and per-IP rate limits prevent brute force and DDoS. Configurable thresholds with exponential backoff on repeated violations.

Audit Trails MEDIUM

Every file access, AI query, and configuration change is logged with timestamps, user context, and request metadata for forensic analysis.

Zero-Trust Architecture STANDARD

No implicit trust. Every request is authenticated and authorized independently, regardless of network origin or previous session state.

VPN Integration STANDARD

Optional VPN layer for network-level isolation. Encrypts all traffic between the mobile client and the development server.

security-middleware.js
// Multi-layer security pipeline
const securityPipeline = [
  pathTraversalGuard({
    allowedRoots: ['/workspace', '/tmp/builds'],
    rejectPatterns: ['../', '~/', '/etc/'],
  }),
  rateLimiter({
    windowMs: 15 * 60 * 1000,
    max: 100,
    backoff: 'exponential',
  }),
  auditLogger({
    level: 'verbose',
    include: ['ip', 'user', 'path', 'method'],
  }),
  zeroTrustAuth(),
];

Architecture

Multi-Agent Tab System

A tab-based architecture where each workspace tab is an independent agent with its own state, AI context, and file system scope.

💻

Node.js Backend

Express server with WebSocket support for real-time file sync and terminal streaming. Handles auth, file operations, and AI proxy.

📄

Multi-Agent Tabs

Each tab maintains its own AI context window. Switch between Claude and Gemini per-tab. Isolated state prevents cross-contamination.

🤖

AI Workflows

Claude for code generation and review. Gemini for large-context analysis. Automatic model routing based on task type and context size.

🗂

PostgreSQL MCP

Model Context Protocol integration with PostgreSQL for persistent workspace state, settings sync, and cross-device continuity.

📱

Mobile-First UI

Touch-optimized editor with gesture navigation, virtual keyboard integration, and responsive panels that adapt to any screen size.

📦

63% Bundle Reduction

Aggressive tree-shaking, code splitting, and lazy loading reduced the initial bundle by 63%. Critical path loads in under 2 seconds on 3G.

Key Features

Enterprise-Grade Mobile Dev

Dual AI Integration

Claude and Gemini working in tandem. Claude handles code generation and reviews. Gemini processes large codebases with its extended context window.

Mobile-First Design

Not a desktop app squeezed into a phone. Purpose-built touch interactions, gesture navigation, and layouts that make coding on mobile viable.

Zero-Trust Security

Five layers of security from network to application. Path traversal protection, rate limiting, audit trails, and VPN integration.

Cross-Device Sync

PostgreSQL MCP maintains workspace state across devices. Start on your phone, continue on your laptop. Context is never lost.

The Story

What This Project Taught

"Mobile development is hard. But the hardest part is not the code -- it is convincing yourself it is worth doing."

Mobile development is genuinely hard -- Touch targets, virtual keyboards, gesture conflicts, battery constraints, network variability. Every assumption from desktop development gets challenged.

Security-first architecture patterns -- Building security as the foundation (not a layer) changed how the entire app was structured. Zero-trust principles simplified auth logic even if they added upfront complexity.

Bundle optimization is an art -- The 63% reduction came from dozens of small decisions: lazy loading, code splitting, tree shaking, and ruthlessly auditing every dependency.