Building a personal Life IQ system using Codex to auto-sync daily diffs from LINE, Gmail, Amazon, and Rakuten into a knowledge base on Google Drive. The idea: pull yesterday's deltas, organize them as structured context, and continuously update a personal KB. Think of it as automated life logging where your daily interactions become queryable data. The technical challenge is parsing heterogeneous data sources (messaging apps, email, e-commerce) into a unified schema that's actually useful for retrieval. If this works, you're essentially building a personal RAG pipeline for life events instead of documents.