Add rustfmt configuration and reformat code

- Document new Rust formatting standards in AGENTS, CODE_MAP, and
  PROGRESS.
- Add rustfmt.toml with style 2024, 2‑space indents, 100‑char width, LF
  endings.
- Apply consistent 2‑space indentation and ordering across source files.
- Minor clean‑up of imports and whitespace to match the new style.

src/app/state.rs

@@ -1,62 +1,62 @@
 use crate::{
-    app::states::{
-        MainMenuState, PerkDecksState, SettingsState, SkillsConfigState, SkirmishState,
-        skirmish_states::BoardState,
-    },
-    cli::Cli,
+  app::states::{
+    MainMenuState, PerkDecksState, SettingsState, SkillsConfigState, SkirmishState,
+    skirmish_states::BoardState,
+  },
+  cli::Cli,
 };
 use ratatui::layout::Rect;
 
 #[derive(Debug, Clone, PartialEq)]
 pub struct GameStates {
-    pub main_menu: MainMenuState,
-    pub skirmish: SkirmishState,
-    pub perk_decks: PerkDecksState,
-    pub skills_config: SkillsConfigState,
-    pub settings: SettingsState,
+  pub main_menu: MainMenuState,
+  pub skirmish: SkirmishState,
+  pub perk_decks: PerkDecksState,
+  pub skills_config: SkillsConfigState,
+  pub settings: SettingsState,
 }
 
 impl GameStates {
-    pub fn new(args: &Cli, area: &Rect) -> Self {
-        Self {
-            main_menu: MainMenuState {
-                id: 0,
-                name: "Main Menu",
-                selected_view: 1,
-            },
-            skirmish: SkirmishState {
-                id: 1,
-                name: "Skirmish",
-                board: BoardState::new(
-                    area,
-                    args.map_width as usize,
-                    args.map_height as usize,
-                    args.zoom_level,
-                    false,
-                ),
-                side_panel: false,
-                turn_counter: 0,
-            },
-            perk_decks: PerkDecksState {
-                id: 2,
-                name: "Perk Decks",
-                selected_perk_deck: 0,
-            },
-            skills_config: SkillsConfigState {
-                id: 3,
-                name: "Skills Config",
-                selected_skill: 0,
-            },
-            settings: SettingsState {
-                username: args.username.clone(),
-                game_mode: args.game_mode.clone(),
-                perk_deck: args.perk_deck.clone(),
-                starting_wood: args.starting_wood.clone(),
-                starting_iron: args.starting_iron.clone(),
-                supply_limit: args.supply_limit.clone(),
-                xp_modifier: args.xp_modifier.clone(),
-                skill_points_limit: args.skill_points_limit.clone(),
-            },
-        }
+  pub fn new(args: &Cli, area: &Rect) -> Self {
+    Self {
+      main_menu: MainMenuState {
+        id: 0,
+        name: "Main Menu",
+        selected_view: 1,
+      },
+      skirmish: SkirmishState {
+        id: 1,
+        name: "Skirmish",
+        board: BoardState::new(
+          area,
+          args.map_width as usize,
+          args.map_height as usize,
+          args.zoom_level,
+          false,
+        ),
+        side_panel: false,
+        turn_counter: 0,
+      },
+      perk_decks: PerkDecksState {
+        id: 2,
+        name: "Perk Decks",
+        selected_perk_deck: 0,
+      },
+      skills_config: SkillsConfigState {
+        id: 3,
+        name: "Skills Config",
+        selected_skill: 0,
+      },
+      settings: SettingsState {
+        username: args.username.clone(),
+        game_mode: args.game_mode.clone(),
+        perk_deck: args.perk_deck.clone(),
+        starting_wood: args.starting_wood.clone(),
+        starting_iron: args.starting_iron.clone(),
+        supply_limit: args.supply_limit.clone(),
+        xp_modifier: args.xp_modifier.clone(),
+        skill_points_limit: args.skill_points_limit.clone(),
+      },
     }
+  }
 }