cards and lot of

README.md

@@ -1,25 +1,40 @@
-# Chick Sorter v14.0 Zunda Tax / Resale
+# Chick Sorter v16.1 Card Target Overlay Fix
 
-## Changes in this build
-- Changed Egg Farm build price to `￥250`.
-- Replaced the previous daily Fairies fee with `ZUNDA TAX`, paid when `Next Day` is pressed.
-- `ZUNDA TAX` taxes only cash above `￥500`: `ceil((cash - 500) × rate)`, with 5% added per `￥500` band and a 95% cap.
-- Removing equipment from a previous Build phase now sells it for 50% of its build price; same-Build removals still refund 100%.
-- Removed visible `STOPPED` text/highlight. Blocked chicks simply stay still.
-- Removed route-overlay arrows/colored flow arrows. Conveyor movement is now shown by small direction triangles inside belt tiles.
-- Moved the starter S1 position lower so the Egg Farm and S1 have more distance.
-- Moved the Truck to the bottom side of the grid and connected the starter S2-to-Truck belt to the new receiver.
-- Made scanner and facility ports strict: a belt must occupy the exact port cell to count as connected.
-- Expanded `Next Day` validation to scanner inputs/outputs and planned output routes, not just machine receiver cells.
-- Build buttons for unaffordable equipment, or already-built unique machines, are disabled and visually faded.
-- Removed Close buttons from clicked-equipment/upgrade popovers. Click outside the popover to close it.
-- Kept `src/index.html` and `src/styles.css` removed; the project uses the root `index.html` and `styles.css` only.
-- Continued centralized price/income/fine/facility definitions in `src/core/config.js`, shared text in `src/core/text.js`, and economy logic in `src/systems/economy.js`.
+This build refines the v15 card and tax system.
 
-## Structure ideas for the next cleanup pass
-- Move HTML button content to a data-rendered build panel instead of hard-coded markup.
-- Give every equipment object a `defId`, so runtime state never duplicates names, prices, sizes, or upgrade rules.
-- Store routes as cell arrays and convert to pixel paths only at movement/draw time.
-- Cache route plans per build session, then invalidate once on build/erase/drag instead of recomputing every draw.
-- Split route validation into errors and warnings, so optional/unused equipment can be supported later without blocking the day.
-- Remove legacy fallback paths after save compatibility is no longer needed.
+## 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
+
+```text
+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%.