feat(core): add klondike v0.2.0 dep and KlondikeAdapter (integration steps 1, 3, 4)

Step 1 — Cargo & registry:
- Add .cargo/config.toml with Quaternions sparse registry
  (https://git.aleshym.co/api/packages/Quaternions/cargo/)
- Add klondike = "0.2.0" to workspace deps (+ card_game v0.3.0,
  arrayvec v0.7.6 as transitives via the Quaternions registry)
- Add klondike as a solitaire_core dep

Step 3 — KlondikeConfig / MoveFromFoundationConfig:
- KlondikeAdapter::new(draw_mode, take_from_foundation) builds a
  KlondikeConfig with the correct DrawStockConfig and
  MoveFromFoundationConfig (Allowed/Disallowed); exposes it via
  klondike_config() for future solver and pile-mapping steps

Step 4 — Scoring via ScoringConfig:
- GameState.adapter (serde(skip)) owns the authoritative KlondikeConfig
  with ScoringConfig::DEFAULT (WXP values)
- score_for_move/flip/undo/recycle replace direct scoring.rs calls;
  scoring.rs retained for reference and future deletion
- score_for_recycle implements the WXP free-recycle allowance rule
  that ScoringConfig::recycle cannot express (flat delta)
- PartialEq/Eq for KlondikeAdapter compare draw_stock and
  move_from_foundation only (scoring is always DEFAULT)

All 192 solitaire_core tests pass; clippy -D warnings clean.

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

solitaire_core/Cargo.toml

@@ -8,3 +8,4 @@ edition.workspace = true
 serde     = { workspace = true }
 thiserror = { workspace = true }
 rand      = { workspace = true }
+klondike  = { workspace = true }