Refactor buildings/units, move CellTag & Players

Introduce BaseBuilding struct. Rename Building and Unit to enum types
(Buildings, Units). Move CellTag and Players enums to the skirmish state
module and update imports and re‑exports accordingly. Add placeholder
miner module.

src/app/buildings/base.rs

@@ -0,0 +1,6 @@
+use crate::app::states::Players;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct BaseBuilding {
+    owner: Players,
+}

src/app/buildings/building.rs

@@ -1,2 +1,2 @@
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub struct Building {}
+pub enum Buildings {}

src/app/buildings/mod.rs

@@ -1,3 +1,4 @@
+pub mod base;
 pub mod building;
 
-pub use building::Building;
+pub use building::Buildings;

src/app/states/mod.rs

@@ -9,5 +9,5 @@ pub use main_menu::MainMenuState;
 pub use perk_decks::{PerkDecks, PerkDecksState};
 pub use settings::SettingsState;
 pub use skills_config::SkillsConfigState;
-pub use skirmish::{GameMode, SkirmishState, ZoomLevel};
+pub use skirmish::{CellTag, GameMode, Players, SkirmishState, ZoomLevel};
 pub use skirmish_states::{FocusedCell, Offset};

src/app/states/skirmish.rs

@@ -20,3 +20,16 @@ pub enum ZoomLevel {
     Default,
     ZoomedOut,
 }
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum CellTag {
+    Base(Players),
+    Tunel,
+    Stone,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Players {
+    Player,
+    Enemy,
+}

src/app/states/skirmish_states/board.rs

@@ -1,7 +1,7 @@
 use crate::app::{
     helpers::{CellSizes, cell_size_helper, cells_area_helper},
-    states::{FocusedCell, Offset, ZoomLevel, skirmish_states::MoveFocusedCell},
-    widgets::{CellTag, CellWidget, Players},
+    states::{CellTag, FocusedCell, Offset, Players, ZoomLevel, skirmish_states::MoveFocusedCell},
+    widgets::CellWidget,
 };
 use ratatui::layout::Rect;
 

src/app/units/mod.rs

@@ -1,3 +1,4 @@
+pub mod miner;
 pub mod unit;
 
-pub use unit::Unit;
+pub use unit::Units;

src/app/units/unit.rs

@@ -1,2 +1,2 @@
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub struct Unit {}
+pub enum Units {}

src/app/widgets/cell.rs

@@ -1,4 +1,8 @@
-use crate::app::{buildings::Building, states::ZoomLevel, units::Unit};
+use crate::app::{
+    buildings::Buildings,
+    states::{CellTag, Players, ZoomLevel},
+    units::Units,
+};
 use ratatui::{
     buffer::Buffer,
     layout::{Alignment, Rect},
@@ -7,19 +11,6 @@ use ratatui::{
     widgets::{Block, Borders, Paragraph, Widget},
 };
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum CellTag {
-    Base(Players),
-    Tunel,
-    Stone,
-}
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Players {
-    Player,
-    Enemy,
-}
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct CellWidget {
     row: usize,
@@ -28,8 +19,8 @@ pub struct CellWidget {
     zoom_level: ZoomLevel,
     tag: CellTag,
     marked: bool,
-    unit: Option<Unit>,
-    building: Option<Building>,
+    unit: Option<Units>,
+    building: Option<Buildings>,
 }
 
 impl CellWidget {
@@ -39,8 +30,8 @@ impl CellWidget {
         zoom_level: ZoomLevel,
         selected: bool,
         tag: CellTag,
-        unit: Option<Unit>,
-        building: Option<Building>,
+        unit: Option<Units>,
+        building: Option<Buildings>,
     ) -> Self {
         Self {
             row,

src/app/widgets/mod.rs

@@ -3,5 +3,5 @@ pub mod cell;
 pub mod keybindings;
 
 pub use board::BoardWidget;
-pub use cell::{CellTag, CellWidget, Players};
+pub use cell::CellWidget;
 pub use keybindings::KeybindingsWidget;