refactor(core,engine,wasm): canonical FOUNDATIONS/TABLEAUS consts; adopt upstream SUITS/RANKS

Review findings 1+2 (Quat-underuse lens, 2026-07-06):

- solitaire_core gains pub const FOUNDATIONS / TABLEAUS — the canonical
  iteration source for the upstream pile enums (upstream klondike has no
  Foundation::ALL, and inherent impls cannot be added to foreign types).
  Deletes three identical private const-fn copies (radial_menu,
  table_plugin, input_plugin) and the hand-enumerated variants in
  card_plugin::sync::all_cards and solitaire_wasm.

- Hand-rolled [Suit; 4] / [Rank; 13] arrays replaced with upstream
  Suit::SUITS / Rank::RANKS. The order-sensitive CardImageSet indexing
  is re-keyed through canonical card_plugin::{suit_index, rank_index}
  helpers that match upstream order, with regression tests asserting
  the correspondence — one ordering everywhere instead of three
  divergent local ones.

Net -177 lines. No behaviour change; all consumers go through the
canonical helpers.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

solitaire_engine/src/radial_menu.rs

@@ -48,6 +48,7 @@ use bevy::math::Vec2;
 use bevy::prelude::*;
 use bevy::window::PrimaryWindow;
 use solitaire_core::{Foundation, KlondikePile, Tableau};
+use solitaire_core::{FOUNDATIONS, TABLEAUS};
 use solitaire_core::Card;
 use solitaire_core::game_state::GameState;
 
@@ -254,13 +255,13 @@ pub fn legal_destinations_for_card(
     game: &GameState,
 ) -> Vec<KlondikePile> {
     let mut out = Vec::new();
-    for foundation in foundations() {
+    for foundation in FOUNDATIONS {
         let dest = KlondikePile::Foundation(foundation);
         if game.can_move_cards(source_pile, &dest, 1) {
             out.push(dest);
         }
     }
-    for tableau in tableaus() {
+    for tableau in TABLEAUS {
         let dest = KlondikePile::Tableau(tableau);
         if game.can_move_cards(source_pile, &dest, 1) {
             out.push(dest);
@@ -360,26 +361,7 @@ fn pile_cards(game: &GameState, pile: &KlondikePile) -> Vec<(Card, bool)> {
 }
 
 
-const fn foundations() -> [Foundation; 4] {
-    [
-        Foundation::Foundation1,
-        Foundation::Foundation2,
-        Foundation::Foundation3,
-        Foundation::Foundation4,
-    ]
-}
 
-const fn tableaus() -> [Tableau; 7] {
-    [
-        Tableau::Tableau1,
-        Tableau::Tableau2,
-        Tableau::Tableau3,
-        Tableau::Tableau4,
-        Tableau::Tableau5,
-        Tableau::Tableau6,
-        Tableau::Tableau7,
-    ]
-}
 
 /// Builds the `(destination, anchor)` list for a fresh radial open.
 ///