feat(iced): add all keyboard shortcuts from egui

hcie-iced-app/crates/hcie-iced-gui/src/app.rs

@@ -3883,10 +3883,11 @@ impl HcieIcedApp {
 
     /// Subscriptions — keyboard events for shortcuts.
     ///
-    /// Handles common keyboard shortcuts:
+    /// Handles all keyboard shortcuts matching the egui GUI:
     /// - Ctrl+Z: Undo
     /// - Ctrl+Y / Ctrl+Shift+Z: Redo
     /// - Ctrl+S: Save
+    /// - Ctrl+Shift+S: Save As
     /// - Ctrl+N: New
     /// - Ctrl+O: Open
     /// - Ctrl+C: Copy
@@ -3895,19 +3896,29 @@ impl HcieIcedApp {
     /// - Ctrl+A: Select All
     /// - Ctrl+D: Deselect
     /// - Ctrl+Shift+I: Inverse Selection
-    /// - Escape: Close dialog
+    /// - Ctrl++: Zoom In
+    /// - Ctrl+-: Zoom Out
+    /// - Ctrl+0: Fit to Screen
+    /// - Ctrl+1: 100% Zoom
+    /// - Delete: Clear selection
+    /// - F11: Fullscreen toggle
+    /// - B: Brush, E: Eraser, V: Move, M: Marquee, L: Lasso
+    /// - W: Magic Wand, T: Text, U: Shape (Vector Rectangle)
+    /// - Escape: Close dialog / exit viewer
+    /// - Enter: Confirm / open in viewer
     pub fn subscription(&self) -> iced::Subscription<Message> {
         let keyboard = iced::keyboard::on_key_press(|key, modifiers| {
             let ctrl = modifiers.control() || modifiers.logo();
             let shift = modifiers.shift();
 
             match key {
+                // ── Modifier combos (Ctrl+...) ───────────────
                 // Ctrl+Z = Undo
                 iced::keyboard::Key::Character(ref c) if c.as_str() == "z" && ctrl && !shift => {
                     Some(Message::Undo)
                 }
                 // Ctrl+Y or Ctrl+Shift+Z = Redo
-                iced::keyboard::Key::Character(ref c) if c.as_str() == "y" && ctrl => {
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "y" && ctrl && !shift => {
                     Some(Message::Redo)
                 }
                 iced::keyboard::Key::Character(ref c) if c.as_str() == "z" && ctrl && shift => {
@@ -3915,14 +3926,18 @@ impl HcieIcedApp {
                 }
                 // Ctrl+S = Save
                 iced::keyboard::Key::Character(ref c) if c.as_str() == "s" && ctrl && !shift => {
+                    Some(Message::SaveFile)
+                }
+                // Ctrl+Shift+S = Save As
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "s" && ctrl && shift => {
                     Some(Message::SaveFileAs)
                 }
                 // Ctrl+N = New
-                iced::keyboard::Key::Character(ref c) if c.as_str() == "n" && ctrl => {
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "n" && ctrl && !shift => {
                     Some(Message::DialogOpen(ActiveDialog::NewImage))
                 }
                 // Ctrl+O = Open
-                iced::keyboard::Key::Character(ref c) if c.as_str() == "o" && ctrl => {
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "o" && ctrl && !shift => {
                     Some(Message::OpenFileRfd)
                 }
                 // Ctrl+C = Copy
@@ -3949,7 +3964,67 @@ impl HcieIcedApp {
                 iced::keyboard::Key::Character(ref c) if c.as_str() == "i" && ctrl && shift => {
                     Some(Message::SelectInverse)
                 }
-                // Arrow keys — viewer navigation or no-op
+                // Ctrl++ = Zoom In
+                iced::keyboard::Key::Character(ref c) if (c.as_str() == "=" || c.as_str() == "+") && ctrl && !shift => {
+                    Some(Message::CanvasZoomRelative(1.1))
+                }
+                // Ctrl+- = Zoom Out
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "-" && ctrl && !shift => {
+                    Some(Message::CanvasZoomRelative(1.0 / 1.1))
+                }
+                // Ctrl+0 = Fit to Screen (reset zoom to 100%)
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "0" && ctrl && !shift => {
+                    Some(Message::CanvasZoomSet(1.0))
+                }
+                // Ctrl+1 = 100% Zoom
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "1" && ctrl && !shift => {
+                    Some(Message::CanvasZoomSet(1.0))
+                }
+
+                // ── Single-key tool shortcuts (no modifiers) ──
+                // B = Brush Tool
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "b" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::Brush))
+                }
+                // E = Eraser Tool
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "e" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::Eraser))
+                }
+                // V = Move Tool
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "v" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::Move))
+                }
+                // M = Marquee (Rect Select) Tool
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "m" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::Select))
+                }
+                // L = Lasso Tool
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "l" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::Lasso))
+                }
+                // W = Magic Wand
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "w" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::MagicWand))
+                }
+                // T = Text Tool
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "t" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::Text))
+                }
+                // U = Shape Tool (Vector Rectangle)
+                iced::keyboard::Key::Character(ref c) if c.as_str() == "u" && !ctrl && !shift => {
+                    Some(Message::ToolSelected(Tool::VectorRect))
+                }
+
+                // ── Named keys ───────────────────────────────
+                // Delete = Clear selection / deselect
+                iced::keyboard::Key::Named(iced::keyboard::key::Named::Delete) => {
+                    Some(Message::Deselect)
+                }
+                // F11 = Fullscreen toggle
+                iced::keyboard::Key::Named(iced::keyboard::key::Named::F11) => {
+                    Some(Message::WindowMaximize)
+                }
+                // Arrow keys — viewer navigation
                 iced::keyboard::Key::Named(iced::keyboard::key::Named::ArrowLeft) => {
                     Some(Message::ViewerPrev)
                 }