Chick Sorter v16.1 Card Target Overlay Fix

This build refines the v15 card and tax system.

v16.1 changes

• Fixed equipment improvement target-picking overlay by importing the target bounds helper into the renderer.
• Non-candidate equipment now receives a full dark overlay, and valid upgrade candidates are explicitly white-highlighted.
• Added a fallback message when a target picker has no valid target, so the game no longer appears frozen.

v16 changes

• Extra Cards is now immediate.
  • Selecting it consumes the current card pick, then grants 2 more card selections in the same draft.
  • It no longer increases future draft size.
• Equipment improvement cards now target machines on the map.
  • Valid targets are highlighted in white.
  • Non-target areas are darkened.
  • Click a highlighted machine to apply the upgrade.
  • Esc cancels target selection and returns to the card draft.
• ZUNDA TAX and Fairies tribute no longer contaminate the next day’s profit display.
  • They are still paid when Next Day is pressed.
  • They still affect cash and total outflow.
  • They are not counted inside the new day’s Turn Profit.
• ZUNDA TAX exemption / Legal Work behavior was rechecked and kept explicit.
  • Base exemption: ￥500.
  • Legal Work: exemption +￥250 and 95% cap point +￥250.
  • Tax rate: 5% from the first yen above the exemption.
  • +5% per ￥500 taxable band.
  • Maximum rate: 95%.
• EGG FARM price remains ￥250.

Active ZUNDA TAX formula

taxable = max(0, cash - exemption)
rate = min(95%, ceil(taxable / 500) × 5%)
ZUNDA TAX = ceil(taxable × rate)

With no Legal Work, exemption = ￥500, so ￥501 starts at 5% and ￥10,000 reaches 95%.