Port Kurt's balls and the Park Ball's multiplier (#28)

Add the Heavy, Level, Lure, Fast, Friend, Moon and Love Balls with their documented bugs, the Park Ball's multiplier outside the contest, and Friend Ball happiness in the party and the PC. The Heavy Ball is refused for Kadabra and Sunflora, whose original weight read runs into VRAM.

The reference emulator compares 6,153 more catch states per browser against the unmodified PokeBallEffect. Validated with 582 unit tests, 153 browser tests, native/reference builds and reference/vendor/release checks. The Bug-Catching Contest and other special battle types remain on #28.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/NATIVE_PORT.md

@@ -150,8 +150,8 @@ tests cover the house, the rival battle and the naming field.
 
 ## Capture and the catching tutorial
 
-`PokeBallEffect`, `BallMultiplierFunctionTable` (Poké, Great, Ultra and
-Master Balls), `GetPokeBallWobble` with `WobbleProbabilities`,
+`PokeBallEffect`, `BallMultiplierFunctionTable` (every ball, including
+Kurt's and the Park Ball outside the contest), `GetPokeBallWobble` with `WobbleProbabilities`,
 `UseBallInTrainerBattle` and `BattleMenu_Pack`'s `.UseItem` in
 `engine/items/item_effects.asm`, `engine/battle_anims/pokeball_wobble.asm`
 and `engine/battle/core.asm`. The catch rate is computed with the original
@@ -260,8 +260,11 @@ named by `hBattleTurn` after a switch of turns, which can be the enemy.
 player's turn, `HandleHealingItems` ends a full turn on the enemy's, and
 the trainer AI reports when `AI_Types`, `AI_Status` or `AIDamageCalc`
 set it. A status heal after a full turn therefore penalises a paralysed
-or burned enemy again, as the original does. Remaining gaps: the special
-Kurt and Park balls.
+or burned enemy again, as the original does. Kurt's balls keep their
+documented bugs (Heavy Ball bank, Fast Ball's three bytes, Moon Ball's
+BURN_HEAL compare, Love Ball's same gender). The Heavy Ball is refused for
+Kadabra and Sunflora, whose original weight read runs into VRAM. The
+Bug-Catching Contest's Park Ball count and contest Pokémon remain gaps.
 
 `engine/pokemon/stats_screen.asm`: the stats screen's three pages (HP,
 status, types, experience to the next level; item and moves with PP; ID,