Days 12-19: Credit Economy, New Features, and the Feature Explosion
This was the week PanPanMao went from "interesting prototype" to "platform with multiple product verticals, a working economy, and a visual identity I'm actually proud of."
Days 12-14: The Credit Economy Goes Live
Referral System
Every user gets a unique referral code. Referrer gets bonus credits, referee gets a welcome bonus. Three layers of persistence for one piece of data: URL parameter, localStorage fallback, server-side validation.
Testimonials
Added real user testimonials. Social proof isn't a feature -- it's a trust signal. For a platform asking people to share personal information, trust is everything.
Days 16-19: Building Xiangshu -- Palm and Face Reading
The most technically ambitious feature yet.
MediaPipe for detection -- runs entirely in the browser. 21 hand landmarks. 468 face landmarks. No server round-trip.
Live overlays: green dots on palm lines. Mesh on facial features. Canvas layer over the video feed at 30fps, throttled to every other frame on mobile.
Multimodal AI prompts: the captured image goes to Claude or Gemini with detailed analysis guidance. The prompt engineering was extensive -- you can't just say "read this palm." You need to guide through the three major lines, the mounts, finger proportions.
Four days from zero to production. The combination of browser-based ML, multimodal AI, and domain knowledge -- each is recent capability. Together they enable something that feels like magic.
The Landing Page Redesign
The warm brown/gold theme wasn't working anymore. Products were getting serious -- users come with real life questions. "Cozy" undermined gravity.
Redesigned to dark luxury. Deep blacks. Gold accents. The cat became a mysterious oracle, not a cute mascot. Users described it as "trustworthy" and "professional."
Running Totals
By Day 19: 7 product verticals, working credit economy, referral system, dark luxury landing page. Around 700 commits.
The bottleneck isn't engineering anymore. It's product decisions. What to build next. How to position it. What price to charge. The engineering can keep up with whatever I decide -- the hard part is deciding well.