Add macOS Ctrl keyboard shortcuts with terminal-aware overrides

Implement Linux-style Ctrl shortcuts (Ctrl+C/V/X/Z for clipboard, Ctrl+N/T/W
for navigation, etc.) while preserving terminal behavior where Ctrl+C sends
SIGINT. Uses per-app NSUserKeyEquivalents to remap Ghostty back to Cmd for
clipboard operations.

Also consolidate aerospace configuration by moving spans-displays preference
from system-level module to home-manager role, allowing full aerospace
configuration to live in home-manager for better modularity.

home/home-darwin-work.nix

@@ -107,6 +107,7 @@
     aerospace = {
       enable = true;
       leader = "cmd";
+      ctrlShortcuts.enable = true;
       sketchybar.enable = true;
       # Optional: Add per-machine userSettings overrides
       # userSettings = {

home/roles/aerospace/default.nix

@@ -62,6 +62,44 @@ in
       };
     };
 
+    enableSpansDisplays = mkOption {
+      type = types.bool;
+      default = true;
+      description = ''
+        Configure macOS Spaces to span displays (required for aerospace multi-monitor support).
+        Sets com.apple.spaces.spans-displays to true.
+
+        NOTE: This was previously set at the system level in modules/aerospace.nix,
+        but has been moved to home-manager for better modularity.
+      '';
+    };
+
+    ctrlShortcuts = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = ''
+          Remap common macOS Cmd shortcuts to Ctrl equivalents for all operations.
+          This makes macOS behave more like Linux.
+
+          Shortcuts remapped globally:
+          - Ctrl+N: New Window
+          - Ctrl+T: New Tab
+          - Ctrl+W: Close Tab
+          - Ctrl+S: Save / Save As
+          - Ctrl+O: Open
+          - Ctrl+F: Find
+          - Ctrl+H: Find and Replace
+          - Ctrl+P: Print
+          - Ctrl+C/V/X: Copy/Paste/Cut
+          - Ctrl+Z: Undo
+
+          NOTE: Terminal emulators like Ghostty require per-app overrides (configured separately)
+          to preserve Ctrl+C as SIGINT instead of Copy.
+        '';
+      };
+    };
+
     sketchybar = {
       enable = mkOption {
         type = types.bool;
@@ -80,14 +118,67 @@ in
       }
     ];
 
-    # Hide macOS menu bar when SketchyBar is enabled
-    # Note: Requires logout/login to take effect
-    targets.darwin.defaults = mkIf cfg.sketchybar.enable {
-      NSGlobalDomain = {
-        _HIHideMenuBar = true;
-        AppleMenuBarVisibleInFullscreen = false;
-      };
-    };
+    # Configure macOS preferences via targets.darwin.defaults
+    targets.darwin.defaults = mkMerge [
+      # Spaces span displays (required for multi-monitor aerospace)
+      (mkIf cfg.enableSpansDisplays {
+        "com.apple.spaces" = {
+          spans-displays = true;
+        };
+      })
+
+      # Ctrl shortcuts to make macOS behave more like Linux
+      (mkIf cfg.ctrlShortcuts.enable {
+        NSGlobalDomain.NSUserKeyEquivalents = {
+          # Window/Tab operations
+          "New Window" = "^n";
+          "New Tab" = "^t";
+          "Close Tab" = "^w";
+          # File operations
+          "Save" = "^s";
+          "Save As…" = "^$s";  # Ctrl+Shift+S
+          "Open" = "^o";
+          "Open…" = "^o";
+          # Find operations
+          "Find" = "^f";
+          "Find…" = "^f";
+          "Find and Replace" = "^h";
+          "Find and Replace…" = "^h";
+          # Print
+          "Print" = "^p";
+          "Print…" = "^p";
+          # Clipboard operations
+          "Copy" = "^c";
+          "Paste" = "^v";
+          "Cut" = "^x";
+          # Undo/Redo
+          "Undo" = "^z";
+          "Redo" = "^$z";  # Ctrl+Shift+Z
+        };
+      })
+
+      # Ghostty-specific overrides to preserve terminal behavior
+      # Remap clipboard operations back to Cmd (macOS default) so Ctrl+C remains SIGINT
+      (mkIf cfg.ctrlShortcuts.enable {
+        "com.mitchellh.ghostty".NSUserKeyEquivalents = {
+          # Remap back to Cmd for clipboard operations
+          "Copy" = "@c";    # Cmd+C
+          "Paste" = "@v";   # Cmd+V
+          "Cut" = "@x";     # Cmd+X
+          "Undo" = "@z";    # Cmd+Z
+          "Redo" = "@$z";   # Cmd+Shift+Z
+        };
+      })
+
+      # Hide macOS menu bar when SketchyBar is enabled
+      # Note: Requires logout/login to take effect
+      (mkIf cfg.sketchybar.enable {
+        NSGlobalDomain = {
+          _HIHideMenuBar = true;
+          AppleMenuBarVisibleInFullscreen = false;
+        };
+      })
+    ];
 
     # Install aerospace package and optional tools if enabled
     home.packages = [ pkgs.aerospace ]