Setup

This is an interactive configuration wizard for shinkoku, a Japanese tax filing system. It walks you through everything needed to generate a complete `shinkoku.config.yaml` file: taxpayer details, business info, address data, family structure, housing loan deductions, and estimated tax payments. What's interesting is how opinionated it is about blue return deductions. It auto-calculates whether you get the 650k, 550k, or 100k yen deduction based on your filing method and bookkeeping setup, and it warns you immediately if you pick mail submission that you won't get auto-fill support for the e-Tax portal. The skill also handlesMyNumber collection carefully, explicitly noting it should never appear in logs or tool output. Covers edge cases like January 1st addresses for local tax purposes and 16-under dependents who don't qualify for deductions but matter for residential tax calculations.