[waleedcodes]

📌 Pull Request #50 of 58: db.ts

📂 File & Architectural Context

• Target File: examples/demo-app/src/lib/db.ts
• Architectural Layer: Demo App Fixture (Database Layer)
• Scope Identifier: demo/db

🎯 Overview & Motivation

Implements an in-memory database client mocking Prisma/ORM operations (user, order, payment) and raw queries.

🔍 Detailed Delta & Technical Implementation

• Implemented db client with user, order, and payment collections.
• Implemented query() method executing raw SQL queries.

🛡️ Quality Gates & Verification

• Target Base Branch: working
• TypeScript Type Safety: 0 errors (tsc --noEmit).
• Code Quality: 0 ESLint warnings (eslint src --ext .ts).
• Test Suite: 34 / 34 passing tests across 13 test suites (vitest run).
• Production Bundle: Bundled in <700ms with esbuild.
• Verification Details: Verified database client operations in demo app.

---

Generated by ProofCode automated delivery pipeline with granular 3-commit pull requests against development branch working.