refactor(engine,wasm,data): route all klondike/card_game imports through solitaire_core

All downstream crates now import Foundation, KlondikePile, Tableau,
Klondike, Session, Suit, Rank exclusively from solitaire_core.
solitaire_core is the single version-pin point for the upstream crates.

- solitaire_engine: 19 files updated, klondike direct dep removed
- solitaire_wasm: use statement updated, klondike direct dep removed
- solitaire_data: unused klondike dep removed
- Cargo.lock: klondike no longer a direct dep of engine/wasm/data
- Full workspace clippy clean, all tests pass

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

solitaire_engine/src/feedback_anim_plugin.rs

@@ -43,7 +43,7 @@ use std::hash::{Hash, Hasher};
 
 use bevy::prelude::*;
 use bevy::window::RequestRedraw;
-use klondike::{Foundation, KlondikePile};
+use solitaire_core::{Foundation, KlondikePile};
 use solitaire_data::AnimSpeed;
 
 use crate::animation_plugin::CardAnim;
@@ -849,7 +849,7 @@ mod tests {
     #[test]
     fn shake_anim_skipped_under_reduce_motion() {
         use bevy::ecs::message::Messages;
-        use klondike::Tableau;
+        use solitaire_core::Tableau;
         use solitaire_core::game_state::{DrawMode, GameState};
         use solitaire_data::Settings;