About / idefeng

Building services that actually run.

I work across AI systems, local-first tools, mobile products, and developer infrastructure—turning them into complete products that can be used and verified.

  1. 01Start from a real problem, not a technology checklist.
  2. 02Prefer local ownership, clear boundaries, and transparent failure.
  3. 03Shipping is not the finish line; runtime evidence closes the loop.