v0.9.0 Release Notes

Fixed incorrect shanten with called melds (pon, chi, kan): The shanten formula now properly accounts for the minimum number of tiles required to form a valid tenpai hand
- Previously, hands like 999m[1111m][1111p][1111s] (3 tiles + 3 kans) incorrectly showed as "Tenpai"
- Now correctly calculates based on tile deficit from minimum required
Added tile deficit validation: Prevents reporting tenpai when there aren't enough tiles to form a valid waiting pattern
Minimum tiles for tenpai by called meld count:

Called Melds Min Hand Tiles for Tenpai

0 13

1 10

2 7

3 4

4 1 (tanki wait)

Fixed ura dora not counting tiles in kans: WASM bindings now include tiles from called melds (pon, chi, kan) when counting dora/ura dora
Added red five (akadora) support in dora selectors: 0m, 0p, 0s options now available in dropdowns
Fixed red five display: Red fives render correctly as red 5 tiles with indicator dot (was showing "0")
Fixed backend error with red fives: Red five notation converted to standard notation before sending to backend

Meld Builder UI: Interactive chi/pon/kan/ankan builder with validation
Winning Tile Selection: Click tiles to mark as winning tile
Fixed kan hand size calculation: Kans now correctly use 3 slots (not 4) since you draw a replacement tile
Hand notation always visible: Shows notation when tiles or melds are present

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