Update formatting to use 4‑space indentation

- Adjust rustfmt.toml to set tab_spaces = 4.
- Reformat imports, struct definitions, function bodies, and match arms
  across the project to match the new style (aligned fields, added
  spacing, etc.).
- Ensure all code complies with the updated rustfmt settings.

src/app/states/skirmish_states/structures/structure_trait.rs

@@ -1,57 +1,57 @@
 use crate::app::states::skirmish_states::Players;
 use ratatui::{
-  style::{Color, Stylize},
-  text::Line,
+    style::{Color, Stylize},
+    text::Line,
 };
 
 pub trait Structure {
-  fn get_tag(&self) -> char;
+    fn get_tag(&self) -> char;
 
-  fn get_color(&self) -> Color;
+    fn get_color(&self) -> Color;
 
-  fn get_level(&self) -> char;
+    fn get_level(&self) -> char;
 
-  fn get_stress(&self) -> u8;
+    fn get_stress(&self) -> u8;
 
-  fn get_durability(&self) -> u16;
+    fn get_durability(&self) -> u16;
 
-  fn get_max_durability(&self) -> u16;
+    fn get_max_durability(&self) -> u16;
 
-  fn get_name(&self) -> &'static str;
+    fn get_name(&self) -> &'static str;
 
-  fn get_owner(&self) -> Players;
+    fn get_owner(&self) -> Players;
 
-  fn base_text(&self) -> Vec<Line<'_>> {
-    let durability: u16 = self.get_durability();
-    let max_durability: u16 = self.get_max_durability();
-    let durability_percent: u32 = durability as u32 * 100 / max_durability as u32;
-    let stress: u8 = self.get_stress();
-    let level: char = self.get_level();
+    fn base_text(&self) -> Vec<Line<'_>> {
+        let durability: u16 = self.get_durability();
+        let max_durability: u16 = self.get_max_durability();
+        let durability_percent: u32 = durability as u32 * 100 / max_durability as u32;
+        let stress: u8 = self.get_stress();
+        let level: char = self.get_level();
 
-    let mut lines: Vec<Line<'_>> = vec![
-      Line::from_iter([
-        "Durability: ".gray(),
-        durability.to_string().cyan(),
-        "/".gray(),
-        max_durability.to_string().cyan(),
-        " ( ".gray(),
-        durability_percent.to_string().cyan(),
-        "% )".gray(),
-      ]),
-      Line::from_iter(["Stress: ".gray(), stress.to_string().cyan(), "%".gray()]),
-    ];
+        let mut lines: Vec<Line<'_>> = vec![
+            Line::from_iter([
+                "Durability: ".gray(),
+                durability.to_string().cyan(),
+                "/".gray(),
+                max_durability.to_string().cyan(),
+                " ( ".gray(),
+                durability_percent.to_string().cyan(),
+                "% )".gray(),
+            ]),
+            Line::from_iter(["Stress: ".gray(), stress.to_string().cyan(), "%".gray()]),
+        ];
 
-    if level != ' ' {
-      lines.push(Line::from_iter([
-        "Level: ".gray(),
-        level.to_string().cyan(),
-      ]));
+        if level != ' ' {
+            lines.push(Line::from_iter([
+                "Level: ".gray(),
+                level.to_string().cyan(),
+            ]));
+        }
+
+        lines
     }
 
-    lines
-  }
-
-  fn text(&self) -> Vec<Line<'_>> {
-    self.base_text()
-  }
+    fn text(&self) -> Vec<Line<'_>> {
+        self.base_text()
+    }
 }