refactor: replace local DrawMode with upstream klondike::DrawStockConfig (#82)

DrawMode was a 1:1 mirror of klondike::DrawStockConfig (DrawOne/DrawThree).
Delete it and use the upstream type everywhere; re-export DrawStockConfig from
solitaire_core. config_for assigns draw_stock directly and draw_mode() returns
session.config().inner.draw_stock.

Serde is unchanged — DrawStockConfig serialises to the same "DrawOne"/"DrawThree"
named variants, so persisted game_state.json / replay JSON stay byte-compatible
(no migration). Field/method/variable names containing draw_mode are unchanged.

35 files, mechanical type swap across all crates. Implemented via a multi-agent
workflow (core → per-crate consumers → verify). cargo test --workspace and
clippy --workspace --all-targets -- -D warnings green.

Closes #82

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

solitaire_data/src/replay.rs

@@ -26,7 +26,7 @@ use std::path::{Path, PathBuf};
 
 use chrono::NaiveDate;
 use serde::{Deserialize, Serialize};
-use solitaire_core::{DrawMode, game_state::GameMode};
+use solitaire_core::{DrawStockConfig, game_state::GameMode};
 use solitaire_core::klondike_adapter::SavedKlondikePile;
 
 const LATEST_REPLAY_FILE_NAME: &str = "latest_replay.json";
@@ -124,7 +124,7 @@ pub struct Replay {
     /// `GameState::new_with_mode(seed, draw_mode, mode)`.
     pub seed: u64,
     /// Draw mode the recorded game was played in.
-    pub draw_mode: DrawMode,
+    pub draw_mode: DrawStockConfig,
     /// Game mode the recorded game was played in.
     pub mode: GameMode,
     /// Total wall-clock seconds the win took. Used for the Stats UI
@@ -180,7 +180,7 @@ impl Replay {
     /// latter directly when the upload task resolves.
     pub fn new(
         seed: u64,
-        draw_mode: DrawMode,
+        draw_mode: DrawStockConfig,
         mode: GameMode,
         time_seconds: u64,
         final_score: i32,
@@ -453,7 +453,7 @@ mod tests {
         let date = NaiveDate::from_ymd_opt(2026, 5, 2).expect("valid date");
         Replay::new(
             12345,
-            DrawMode::DrawThree,
+            DrawStockConfig::DrawThree,
             GameMode::Classic,
             134,
             5_120,
@@ -596,7 +596,7 @@ mod tests {
         let date = NaiveDate::from_ymd_opt(2026, 5, 2).expect("valid date");
         Replay::new(
             id as u64,
-            DrawMode::DrawOne,
+            DrawStockConfig::DrawOne,
             GameMode::Classic,
             60,
             id,