26 minutes from 'let's see what this does' to pushed on GitHub

Came back to the physics timer 11 days after recon, said "get this running and ship it," and the whole rescue — boot to GitHub push — took 26 minutes. Stripped 6 dead dependencies (@google/genai, express, dotenv, autoprefixer, tsx, @types/express), fixed a silently broken shimmer animation that was missing its @keyframes declaration, cleaned every AI Studio scaffold artifact (cleanup log, audit report, default title, HMR disabling hack). Added an SVG favicon, captured 3 screenshots and a 4.3 MB demo GIF via Chrome DevTools MCP, wrote a README that leads with the demo and explains the I/O countdown context. Package count dropped to 159 clean dependencies, zero npm audit vulnerabilities, zero console errors. The app itself turned out to be genuinely fun — the four physics modes (Core, Fluid, Cosmic, Thermal) each completely transform the particle behavior, and the explosive transitions between countdown digits have real visual impact. The cursor creates a vortex effect and the glassmorphic HUD panels push particles out of their way when you drag them. One commit, pushed clean.