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/replay_playback.rs

@@ -40,7 +40,7 @@
 //! flag is threaded through, no every-callsite gate is added.
 
 use bevy::prelude::*;
-use klondike::KlondikePile;
+use solitaire_core::KlondikePile;
 use solitaire_data::{Replay, ReplayMove};
 
 use crate::events::{DrawRequestEvent, MoveRequestEvent, StateChangedEvent, UndoRequestEvent};
@@ -555,7 +555,7 @@ mod tests {
     use crate::game_plugin::GamePlugin;
     use bevy::time::TimeUpdateStrategy;
     use chrono::NaiveDate;
-    use klondike::{KlondikePile, Tableau};
+    use solitaire_core::{KlondikePile, Tableau};
     use solitaire_core::game_state::{DrawMode, GameMode};
     use solitaire_core::klondike_adapter::{SavedKlondikePile, SavedTableau};
     use std::time::Duration;