feat: Implement crop withering mechanics (#28)

tests/growth.rs

@@ -86,6 +86,8 @@ fn test_crop_growth_logic() {
                 seed: seed_type.clone(),
                 watered: true,
                 growth_stage: 0,
+                withered: false,
+                dry_counter: 0,
             },
         ),
         (
@@ -95,6 +97,8 @@ fn test_crop_growth_logic() {
                 seed: seed_type.clone(),
                 watered: false,
                 growth_stage: 0,
+                withered: false,
+                dry_counter: 0,
             },
         ),
         (
@@ -104,6 +108,8 @@ fn test_crop_growth_logic() {
                 seed: seed_type.clone(),
                 watered: true,
                 growth_stage: 2, // Max
+                withered: false,
+                dry_counter: 0,
             },
         ),
     ];

tests/interaction.rs

@@ -180,6 +180,8 @@ fn test_water_crop() {
                 seed: seed_type.clone(),
                 watered: false,
                 growth_stage: 0,
+                withered: false,
+                dry_counter: 0,
             },
         )],
         vec![],

tests/pathfinding.rs

@@ -95,6 +95,8 @@ fn test_find_path_around_obstacle() {
         },
         watered: false,
         growth_stage: 0,
+        withered: false,
+        dry_counter: 0,
     };
     let obstacles = vec![
         (2, 2, obstacle.clone()),
@@ -148,6 +150,8 @@ fn test_find_path_no_path() {
         },
         watered: false,
         growth_stage: 0,
+        withered: false,
+        dry_counter: 0,
     };
     let obstacles = vec![
         (2, 0, obstacle.clone()),