Keyboard Shortcuts: any menu command can take a key, and a key can be cleared

[Fvzion]

The problem today

• Most menu commands can't get a shortcut. Edit › Keyboard Shortcuts only lists commands that already come with one. Every filter (Gaussian Blur, Unsharp Mask…), New Adjustment Layer › Levels / Curves…, Select › Color Range…, Image › Trim…, Layer › Rename Layer… can't be given a key, however often they're used.
• A shortcut can't be removed. You can change a key but not free it, so a default like ⌘J (Duplicate Layer) can't be turned off to use it elsewhere.
• Custom shortcuts can vanish after an update. Saved shortcuts are read all or nothing: if a later version renames or adds one command, the whole list fails to load and every customization is lost.
• A recorded Delete key never worked (it was stored as U+0008, the canvas checks U+007F).

What changes for the user

• A new "More Menu Commands" section in Edit › Keyboard Shortcuts lists every menu command without a shortcut. Pick one, press a key, and it shows in the menu and works.
• A ⊗ button next to each shortcut clears it, defaults included.
• Saved shortcuts are read one by one, so an update keeps every one that still applies.

How to try it

1. Edit › Keyboard Shortcuts…, scroll to More Menu Commands, click Filter › Gaussian Blur… and press ⌃⌥G.
2. Close the sheet: the Filter menu now shows ⌃⌥G next to Gaussian Blur, and the key opens it.
3. Back in the sheet, click ⊗ next to a default (for example Merge Layers, ⌘E): the menu item loses its key.

In the code

• KeyboardShortcuts.swift: the assignable commands list, clearing (ShortcutChord.unassigned), the one-at-a-time loader, the Delete fix.
• CompositorApp.swift: menu items without a default get .assignableShortcut("Menu › Item"), so their key comes from the registry.
• A Debug build stops with a clear message if a menu item asks for a shortcut that isn't registered, so the list can't drift from the menus.
• KeyboardShortcutTests (13 tests): no duplicate ids, no conflicting defaults, clearing, recording Delete, loading a list with an unknown entry.

Tested on macOS 26.6 (Apple silicon): the full test suite passes. Not yet tried on macOS 27.

🤖 Generated with Claude Code