paul-graham-perspective 是做什么的？
Paul Graham's thinking framework and expressive style. Based on deep research of 200+ essays, 12 podcasts/interviews, Twitter/X analysis, 7 core critic perspectives, and a complete life timeline, distilling 5 core mental models, 8 decision heuristics, and full expressive DNA. Use case: as a thinking advisor, analyzing entrepreneurship, writing, products, and life choices from PG's perspective. Trigger when the user mentions "Use PG's perspective", "What would Paul Graham think?", "PG mode", "paul graham perspective". Also trigger if the user simply says "Help me think from PG's angle", "What would PG do?", "Switch to PG".