Drop crossterm delete App add CLI defaults

Remove the crossterm dependency and its input handling, delete the
now‑unused
App module, and provide default values for all command‑line options.

src/cli.rs

@@ -3,37 +3,91 @@ use clap::Parser;
 #[derive(Parser, Debug)]
 #[command(version, about = "War in Tunnels", long_about = "War in Tunnels")]
 pub struct Cli {
-    #[arg(long, help = "Username", value_name = "String")]
+    #[arg(
+        long,
+        help = "Default window",
+        value_name = "main_menu | skirmish | skills_config | perk_decks | settings",
+        default_value = "main_menu"
+    )]
+    pub default_window: String,
+
+    #[arg(
+        long,
+        help = "Username",
+        value_name = "String",
+        default_value = "Player"
+    )]
     pub username: String,
 
-    #[arg(long, help = "Game mode", value_name = "LastManStanding or FrontLines")]
+    #[arg(
+        long,
+        help = "Game mode",
+        value_name = "LastManStanding or FrontLines",
+        default_value = "LastManStanding"
+    )]
     pub game_mode: String,
 
-    #[arg(long, help = "Map width", value_name = "Positive integer [20; 100]")]
+    #[arg(
+        long,
+        help = "Map width",
+        value_name = "Positive integer [20; 100]",
+        default_value = "50"
+    )]
     pub map_width: u8,
 
-    #[arg(long, help = "Map height", value_name = "Positive integer [11; 50]")]
+    #[arg(
+        long,
+        help = "Map height",
+        value_name = "Positive integer [11; 50]",
+        default_value = "25"
+    )]
     pub map_height: u8,
 
-    #[arg(long, help = "Perk Deck", value_name = "String (check Perk Deck tab)")]
+    #[arg(
+        long,
+        help = "Perk Deck",
+        value_name = "String (check Perk Deck tab)",
+        default_value = "Silesian"
+    )]
     pub perk_deck: String,
 
-    #[arg(long, help = "Starting wood", value_name = "Positive integer")]
+    #[arg(
+        long,
+        help = "Starting wood",
+        value_name = "Positive integer",
+        default_value = "50"
+    )]
     pub starting_wood: u8,
 
-    #[arg(long, help = "Starting iron", value_name = "Positive integer")]
+    #[arg(
+        long,
+        help = "Starting iron",
+        value_name = "Positive integer",
+        default_value = "25"
+    )]
     pub starting_iron: u8,
 
-    #[arg(long, help = "Supply limit", value_name = "Positive integer")]
+    #[arg(
+        long,
+        help = "Supply limit",
+        value_name = "Positive integer",
+        default_value = "99"
+    )]
     pub supply_limit: u8,
 
-    #[arg(long, help = "XP modifier", value_name = "Float [0.5; 2.0]")]
+    #[arg(
+        long,
+        help = "XP modifier",
+        value_name = "Float [0.5; 2.0]",
+        default_value = "1.0"
+    )]
     pub xp_modifier: f32,
 
     #[arg(
         long,
         help = "Skill points limit",
-        value_name = "Positive integer [120; 690]"
+        value_name = "Positive integer [120; 690]",
+        default_value = "120"
     )]
     pub skill_points_limit: u16,
 }