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- Create heat_cycles table in init.js (breeding.js used it but nothing created it) - Add litters columns the routes actually use (breeding_date, whelping_date, puppy_count) - Add health_records columns used by puppy logs (record_date, description) - Puppy log insert now also sets NOT NULL test_date - Migration 002 no-ops on a fresh DB instead of crashing on missing dogs table - init.js honors DB_PATH and creates the data dir, so migrations and the app always target the same file Verified: full heat-cycle/litter/puppy-log CRUD passes against a virgin database. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>