Fix nested-terminal behavior: track size from frame/resize events

- Add App::term_size, updated from the drawn frame area and
  Event::Resize instead of polling crossterm::terminal::size() in
  hit-testing and dialog positioning (correct inside TUI-WM/tmux)
- Handle Event::Resize explicitly
- Fix can_paste tautology (|| true)
- Drop unused import

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/app.rs

@@ -1,6 +1,6 @@
 use std::path::PathBuf;
 
-use crate::config::{AppliesTo, Config, CustomMenuItem};
+use crate::config::{AppliesTo, Config};
 use crate::file_ops::{self, FileEntry};
 
 #[derive(Debug, Clone, PartialEq)]
@@ -107,6 +107,11 @@ pub struct App {
     pub settings_hover_button: Option<u8>,
     // Terminal capabilities
     pub unicode_support: bool,
+    /// Senast kända terminalstorlek (kolumner, rader). Uppdateras från
+    /// frame-arean vid varje draw och från Event::Resize — pollar aldrig
+    /// terminalen, vilket gör hit-testing korrekt även i nästlade
+    /// terminaler (t.ex. inne i TUI-WM).
+    pub term_size: (u16, u16),
 }
 
 // Which field inside the settings editor is being edited
@@ -181,6 +186,7 @@ impl App {
             settings_custom_selected: 0,
             settings_hover_button: None,
             unicode_support: detect_unicode_support(),
+            term_size: crossterm::terminal::size().unwrap_or((80, 24)),
         }
     }
 
@@ -423,7 +429,9 @@ impl App {
     pub fn build_context_menu(&self, x: u16, y: u16, is_sidebar_fav: bool, fav_path: Option<String>) -> ContextMenu {
         let has_selection = !self.selected_indices.is_empty();
         let has_clipboard = self.clipboard.is_some();
-        let can_paste = has_clipboard && (self.selected_target_dir().is_some() || true);
+        // Inklistring går till markerad katalog om en sådan finns, annars
+        // aktuell katalog — så clipboard-innehåll räcker.
+        let can_paste = has_clipboard;
 
         // Determine if selected items are files/dirs for custom item filtering
         let selected_is_dir = self.selected_indices.iter().all(|&i| {

src/events.rs

@@ -32,6 +32,10 @@ fn handle_event(app: &mut App, ev: Event) -> bool {
             handle_mouse(app, mouse);
             false
         }
+        Event::Resize(w, h) => {
+            app.term_size = (w, h);
+            false
+        }
         _ => false,
     }
 }
@@ -744,7 +748,7 @@ fn handle_left_click(app: &mut App, col: u16, row: u16) {
         // Check if click lands in the submenu (only visible when NewSubmenu is highlighted)
         let ns_idx = m.items.iter().position(|i| matches!(i, ContextMenuItem::NewSubmenu));
         let in_sub = if let Some(ns_pos) = ns_idx {
-            let (term_w, _) = crossterm::terminal::size().unwrap_or((120, 40));
+            let (term_w, _) = app.term_size;
             let sub_x = (mx + MENU_W).min(term_w.saturating_sub(SUB_W));
             let sub_y = my + 1 + ns_pos as u16;
             col >= sub_x && col < sub_x + SUB_W
@@ -800,7 +804,7 @@ fn handle_left_click(app: &mut App, col: u16, row: u16) {
     if row == gear_row && col >= gear_col && col < gear_col + 3 {
         // If settings is already open and we click inside the dialog – handled by settings_click
         if app.dialog == DialogMode::Settings {
-            let dlg = ui::settings_dialog_rect(sb.x + sb.width);
+            let dlg = ui::settings_dialog_rect(sb.x + sb.width, app.term_size.1);
             settings_click(app, col, row, dlg);
         } else {
             app.dialog = DialogMode::Settings;
@@ -810,7 +814,7 @@ fn handle_left_click(app: &mut App, col: u16, row: u16) {
 
     // If settings dialog is open, route all clicks into it
     if app.dialog == DialogMode::Settings {
-        let dlg = ui::settings_dialog_rect(sb.x + sb.width);
+        let dlg = ui::settings_dialog_rect(sb.x + sb.width, app.term_size.1);
         settings_click(app, col, row, dlg);
         return;
     }
@@ -920,7 +924,7 @@ fn handle_mouse_move(app: &mut App, col: u16, row: u16) {
     // Settings hover: highlight rows when mouse moves over the dialog
     if app.dialog == DialogMode::Settings {
         let layout = ui::compute_layout(app);
-        let dlg = ui::settings_dialog_rect(layout.status_bar.x + layout.status_bar.width);
+        let dlg = ui::settings_dialog_rect(layout.status_bar.x + layout.status_bar.width, app.term_size.1);
         if col > dlg.x && col < dlg.x + dlg.width.saturating_sub(1)
             && row > dlg.y && row < dlg.y + dlg.height.saturating_sub(1)
         {
@@ -983,7 +987,7 @@ fn handle_mouse_move(app: &mut App, col: u16, row: u16) {
     // When NewSubmenu is highlighted, check if the mouse moves into the flyout
     if let Some(ns_pos) = menu.items.iter().position(|i| matches!(i, ContextMenuItem::NewSubmenu)) {
         if menu.selected == ns_pos {
-            let (term_w, _) = crossterm::terminal::size().unwrap_or((120, 40));
+            let (term_w, _) = app.term_size;
             let sub_x = (mx + MENU_W).min(term_w.saturating_sub(SUB_W));
             let sub_y = my + 1 + ns_pos as u16;
 

src/ui.rs

@@ -56,9 +56,11 @@ pub struct LayoutAreas {
     pub path_input: Rect,
 }
 
-/// Compute the layout areas for hit testing (without a frame)
-pub fn compute_layout(_app: &App) -> LayoutAreas {
-    let (width, height) = crossterm::terminal::size().unwrap_or((120, 40));
+/// Compute the layout areas for hit testing (without a frame).
+/// Uses the last size seen by draw() instead of querying the terminal,
+/// so it stays correct inside nested terminals.
+pub fn compute_layout(app: &App) -> LayoutAreas {
+    let (width, height) = app.term_size;
     let full = Rect::new(0, 0, width, height);
     split_layout(full)
 }
@@ -97,6 +99,7 @@ fn split_layout(area: Rect) -> LayoutAreas {
 
 pub fn draw(f: &mut Frame, app: &mut App) {
     let area = f.area();
+    app.term_size = (area.width, area.height);
     let layout = split_layout(area);
 
     draw_sidebar(f, app, layout.sidebar);
@@ -644,17 +647,16 @@ fn draw_context_menu(f: &mut Frame, app: &App, menu: crate::app::ContextMenu) {
 }
 
 /// Compute the settings dialog rect anchored to the bottom-right corner.
-pub fn settings_dialog_rect(right_edge: u16) -> ratatui::layout::Rect {
+pub fn settings_dialog_rect(right_edge: u16, term_h: u16) -> ratatui::layout::Rect {
     let dlg_width: u16 = 72;
     let dlg_height: u16 = 26;
     let x = right_edge.saturating_sub(dlg_width + 1);
-    let (_, term_h) = crossterm::terminal::size().unwrap_or((120, 40));
     let y = term_h.saturating_sub(dlg_height + 3);
     Rect::new(x, y, dlg_width, dlg_height)
 }
 
 fn draw_settings(f: &mut Frame, app: &App, right_edge: u16) {
-    let area = settings_dialog_rect(right_edge);
+    let area = settings_dialog_rect(right_edge, f.area().height);
     let term_area = f.area();
     let area = Rect::new(
         area.x.min(term_area.width.saturating_sub(area.width)),