Explain concepts, bugs, or design decisions in a deliberately chosen teaching style. Use when user types `/explain`, says "explain"/"giải thích", or wants to understand *why* (not just a fix). Honors flags `--story` (Journey + Analogy for bugs), `--why` (First principles + Counterfactual for design
Explain concepts, bugs, or design decisions in a deliberately chosen teaching style. Use when user types `/explain`, says "explain"/"giải thích", or wants to understand *why* (not just a fix). Honors flags `--story` (Journey + Analogy for bugs), `--why` (First principles + Counterfactual for design decisions), `--diff` (Compare + Layered onion for X vs Y). Auto-picks style if no flag. Output in Vi