tsa-temporal

Find "hot zones" — symbols modified often in recent git history that need extra review attention. Adds temporal context (mod_count_30d / 90d / all) to call-graph queries. Like Hebbian "fire-together-wire-together" but for code: functions that change together often deserve scrutiny together. Use when: — User asks "what's churning the most" / "any hot zones?" — Pre-refactor: "what's the history of this function?" —…