Add pane resizing

src-tauri/src/config/mod.rs

@@ -53,12 +53,24 @@ pub struct AppearanceOverride {
     pub font_size: Option<u32>,
 }
 
-/// Pane layout proportions (fractions of the window width, 0..1).
+/// Pane layout proportions and constraints.
 #[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 #[serde(default)]
 pub struct LayoutConfig {
+    /// Initial fraction of the window width for the left pane (0..1).
     pub left_pane_fraction: f32,
+    /// Initial fraction of the window width for the right pane (0..1).
     pub right_pane_fraction: f32,
+    /// Minimum width of the left pane in pixels.
+    pub left_pane_min: i32,
+    /// Maximum width of the left pane in pixels.
+    pub left_pane_max: i32,
+    /// Minimum width of the right pane in pixels.
+    pub right_pane_min: i32,
+    /// Maximum width of the right pane in pixels.
+    pub right_pane_max: i32,
+    /// Minimum width of the center pane in pixels.
+    pub center_pane_min: i32,
 }
 
 impl Default for LayoutConfig {
@@ -66,6 +78,11 @@ impl Default for LayoutConfig {
         Self {
             left_pane_fraction: 0.20,
             right_pane_fraction: 0.35,
+            left_pane_min: 120,
+            left_pane_max: 600,
+            right_pane_min: 150,
+            right_pane_max: 600,
+            center_pane_min: 200,
         }
     }
 }