Son Le — Field noteshttps://plantis.ai/writing/Practical AI engineering, runnable experiments and builder events. Based in Singapore. Available for part-time contracts and full-time roles.How I built Pippa as a proactive calendar agenthttps://plantis.ai/writing/pippa-proactive-calendar-agent/https://plantis.ai/writing/pippa-proactive-calendar-agent/Thu, 08 Oct 2026 00:00:00 GMTA Calendar assistant that prepares WhatsApp updates before I ask. The Python, APIs and delivery rules behind its proactive behavior.