Add zoom support and emoji keybinding icons

- CellWidget now stores a ZoomLevel, renders size‑dependent text, and
  provides
  methods to set the zoom level and build its block.
- BoardState creates cells with the current zoom level, adds a helper to
  get a
  mutable cell, and updates each cell’s zoom level in `zoom_change`.
- KeybindingsWidget constructor now takes the widget height, calculates
  vertical padding to centre groups, and adds left borders between
  groups.
- Views (default, main_menu, skirmish) pass the area height to the new
  constructor.
- Keybinding descriptions are replaced with emoji symbols (🔈, 🔊, 🔉).
- BoardWidget clones the cell template instead of dereferencing it.

src/app/keybindings/keybindings.rs

@@ -251,7 +251,7 @@ pub static KEYBINDINGS: &[KeyBinding] = &[
         modifiers: KeyModifiers::NONE,
         group: Group::Music,
         symbol: "m",
-        description: "Mute music",
+        description: "🔈",
     },
     KeyBinding {
         action: Action::VolumeUp,
@@ -260,7 +260,7 @@ pub static KEYBINDINGS: &[KeyBinding] = &[
         modifiers: KeyModifiers::NONE,
         group: Group::Music,
         symbol: "b",
-        description: "Increase music volume",
+        description: "🔊",
     },
     KeyBinding {
         action: Action::VolumeDown,
@@ -269,7 +269,7 @@ pub static KEYBINDINGS: &[KeyBinding] = &[
         modifiers: KeyModifiers::NONE,
         group: Group::Music,
         symbol: "n",
-        description: "Decrease music volume",
+        description: "🔉",
     },
     KeyBinding {
         action: Action::WildCard('_'),

src/app/states/skirmish_states/board.rs

@@ -45,7 +45,7 @@ impl BoardState {
 
         for row in 0..map_height {
             for col in 0..map_width {
-                cells.push(CellWidget::new(row, col));
+                cells.push(CellWidget::new(row, col, zoom_level));
             }
         }
 
@@ -65,6 +65,10 @@ impl BoardState {
         }
     }
 
+    fn get_mut_cell(&mut self, row: usize, col: usize) -> &mut CellWidget {
+        &mut self.cells[row * self.map_width + col]
+    }
+
     pub fn zoom_change(&mut self, new_zoom_level: ZoomLevel) {
         self.zoom_level = new_zoom_level;
 
@@ -88,6 +92,12 @@ impl BoardState {
             self.map_height,
             self.map_width,
         );
+
+        for row in 0..self.map_height {
+            for col in 0..self.map_width {
+                self.get_mut_cell(row, col).set_zoom_level(new_zoom_level);
+            }
+        }
     }
 
     fn max_offset(map_size: usize, size: usize) -> usize {

src/app/views/default.rs

@@ -35,6 +35,6 @@ pub fn default_view(area: Rect, buf: &mut Buffer) {
     }
 
     {
-        KeybindingsWidget::new(ACTIONS).render(keybindings_area, buf);
+        KeybindingsWidget::new(ACTIONS, keybindings_area.height).render(keybindings_area, buf);
     }
 }

src/app/views/main_menu.rs

@@ -93,6 +93,6 @@ pub fn main_menu_view(app: &App, area: Rect, buf: &mut Buffer) {
     }
 
     {
-        KeybindingsWidget::new(ACTIONS).render(keybindings_area, buf);
+        KeybindingsWidget::new(ACTIONS, keybindings_area.height).render(keybindings_area, buf);
     }
 }

src/app/views/skirmish.rs

@@ -97,6 +97,6 @@ pub fn skirmish_view(app: &App, area: Rect, buf: &mut Buffer) {
     }
 
     {
-        KeybindingsWidget::new(ACTIONS).render(keybindings_area, buf);
+        KeybindingsWidget::new(ACTIONS, keybindings_area.height).render(keybindings_area, buf);
     }
 }

src/app/widgets/board.rs

@@ -42,7 +42,7 @@ impl Widget for BoardWidget<'_> {
                     .cells
                     .get(map_row * self.state.map_width + map_col)
                 {
-                    let mut cell: CellWidget = *template;
+                    let mut cell: CellWidget = template.clone();
 
                     if map_row == self.state.focused_cell.get_row()
                         && map_col == self.state.focused_cell.get_col()

src/app/widgets/cell.rs

@@ -1,8 +1,10 @@
+use crate::app::states::ZoomLevel;
 use ratatui::{
     buffer::Buffer,
     layout::{Alignment, Rect},
     style::{Color, Style, Stylize},
-    widgets::{Block, Borders, Padding, Paragraph, Widget},
+    text::Line,
+    widgets::{Block, Borders, Paragraph, Widget},
 };
 
 // pub enum CellTags {
@@ -13,20 +15,23 @@ use ratatui::{
 //     Base,
 // }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq)]
 pub struct CellWidget {
-    pub row: usize,
-    pub col: usize,
+    row: usize,
+    col: usize,
     selected: bool,
+    zoom_level: ZoomLevel,
+    // text_area: Vec<Line>,
     // pub tags: Vec<CellTags>,
 }
 
 impl CellWidget {
-    pub fn new(row: usize, col: usize) -> Self {
+    pub fn new(row: usize, col: usize, zoom_level: ZoomLevel) -> Self {
         Self {
             row,
             col,
             selected: false,
+            zoom_level,
         }
     }
 
@@ -34,6 +39,10 @@ impl CellWidget {
         self.selected = selected;
     }
 
+    pub fn set_zoom_level(&mut self, zoom_level: ZoomLevel) {
+        self.zoom_level = zoom_level;
+    }
+
     fn col_to_letters(&self) -> String {
         let mut col: usize = self.col + 1;
         let mut letters: Vec<char> = Vec::new();
@@ -46,7 +55,7 @@ impl CellWidget {
         letters.iter().rev().collect()
     }
 
-    pub fn display_coords(&self) -> String {
+    fn display_coords(&self) -> String {
         format!("{}{}", self.col_to_letters(), self.row)
     }
 
@@ -57,24 +66,44 @@ impl CellWidget {
             Color::White
         }
     }
-}
 
-impl Widget for CellWidget {
-    fn render(self, area: Rect, buf: &mut Buffer) {
-        Paragraph::new("")
-            .alignment(Alignment::Center)
-            .block(
+    fn get_text_area(&self) -> Vec<Line<'_>> {
+        let mut text_area: Vec<Line<'_>> = Vec::new();
+
+        match self.zoom_level {
+            ZoomLevel::ZoomedIn => {
+                text_area.push(Line::from("           "));
+                text_area.push(Line::from("           "));
+                text_area.push(Line::from("           "));
+                text_area.push(Line::from("           "));
+                text_area.push(Line::from("           "));
+            }
+            ZoomLevel::Default => {
+                text_area.push(Line::from("       "));
+                text_area.push(Line::from("       "));
+                text_area.push(Line::from("       "));
+            }
+            ZoomLevel::ZoomedOut => {
+                text_area.push(Line::from("   "));
+            }
+        }
+
+        text_area
+    }
+
+    fn get_block(&self) -> Block<'_> {
         Block::default()
             .borders(Borders::ALL)
             .style(Style::default().fg(self.fg_color()))
             .title(self.display_coords().green())
-                    .padding(Padding {
-                        left: 0,
-                        right: 0,
-                        top: if area.height <= 3 { 0 } else { area.height / 3 },
-                        bottom: 0,
-                    }),
-            )
+    }
+}
+
+impl Widget for CellWidget {
+    fn render(self, area: Rect, buf: &mut Buffer) {
+        Paragraph::new(self.get_text_area())
+            .alignment(Alignment::Center)
+            .block(self.get_block())
             .render(area, buf);
     }
 }

src/app/widgets/keybindings.rs

@@ -33,11 +33,15 @@ impl KeybindingsWidget {
     /// # Parameters
     ///
     /// * `actions` – A slice of actions for which keybindings should be shown.
+    /// * `area_height` – The height of the area in which the widget will be rendered.
+    ///   This value is used to calculate vertical padding so that the keybinding rows
+    ///   are vertically centered when the widget's allocated height is larger than the
+    ///   number of lines needed to display the bindings.
     ///
     /// # Returns
     ///
     /// A fully‑initialised `KeybindingsWidget` ready for rendering.
-    pub fn new(actions: &[Action]) -> Self {
+    pub fn new(actions: &[Action], area_height: u16) -> Self {
         let keybindings: Vec<Option<&'static KeyBinding>> =
             actions.iter().map(|a| binding_for(*a)).collect();
 
@@ -47,7 +51,8 @@ impl KeybindingsWidget {
             .collect();
 
         let mut grouped_keybindings: Vec<Paragraph<'static>> = Vec::new();
-        for (i, group) in Group::value_variants().iter().enumerate() {
+
+        for group in Group::value_variants().iter() {
             if !used_groups.contains(group) {
                 continue;
             }
@@ -66,9 +71,18 @@ impl KeybindingsWidget {
                 })
                 .collect();
 
-            let mut block: Block<'_> = Block::default().padding(Padding::new(1, 1, 0, 0));
+            let height_diff: u16 =
+                area_height.saturating_sub(grouped_lines.len().saturating_add(2) as u16);
 
-            if i != 0 {
+            let padding_top: u16 = if height_diff <= 1 {
+                height_diff
+            } else {
+                height_diff / 2
+            };
+
+            let mut block: Block<'_> = Block::default().padding(Padding::new(1, 1, padding_top, 0));
+
+            if !grouped_keybindings.is_empty() {
                 block = block.borders(Borders::LEFT);
             }