Customize Ribbon and Quick Access Toolbar (#379) (#384)

* Customize Keyboard dialog (#368)

Tools > Customize Keyboard (tools.customizeKeyboard): pick a category and
a command, see its keys, press a combination to see which command uses it,
then Assign / Remove / Reset All. Also reachable from File > Options
(Keyboard shortcuts: Customize...) and command search.

- engine: KeyMap (assigned key -> command, removed built-in keys), consulted
  before the registry's built-in shortcuts; keys compared in one canonical
  form. Saved maps read leniently: junk entries and unknown commands are
  dropped, never failing the rest of the preferences.
- tools.customizeKeyboard: with params (assign/remove/reset/command/key) it
  only changes or reports the map; without params it opens the dialog.
- ui: key dispatch and menu/tooltip shortcut text use the user map; the map
  persists in ui.json; more keys (Q, F1-F12, 4/6/7, Insert) can be bound.
- i18n strings in every catalog; docs/ui-parity, gaps #24, ROADMAP log.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Customize Ribbon and Quick Access Toolbar (#379)

Tools > Customize Ribbon (tools.customizeRibbon): one dialog with two
pages. Ribbon: commands by category next to the ribbon's tabs; show or
hide and reorder tabs, add custom tabs and custom groups (on built-in or
custom tabs) holding any commands, rename, remove, reset. Quick Access
Toolbar: add, remove and reorder its commands, reset.

- engine: RibbonLayout (tab order and visibility, custom groups, the
  toolbar's commands). Saved layouts read leniently: junk, duplicates,
  reserved names and unknown commands are dropped.
- tools.customizeRibbon: with params (hide/show, newTab, newGroup, add,
  remove, rename, move, qatAdd/qatRemove/qatMove, reset, layout) it only
  changes or reports the layout; without params it opens the dialog.
- ui: the tab strip and ribbon follow the layout (custom groups draw the
  commands' own icons, else a lettered tile); the Quick Access Toolbar
  shows the user's commands; right-click any ribbon button to add it to
  (or remove it from) the toolbar or open the dialog; the toolbar's ...
  button opens a menu of common commands and More Commands... (#376);
  File > Options has a second Customize button; layout persists in
  ui.json under `ribbon`.
- Open and Print icons drawn in code; i18n strings in every catalog;
  docs/ui-parity, gaps #24, ROADMAP log, parity checklist.

Fixes #376.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

docs/parity-checklist.md

@@ -2,7 +2,7 @@
 
 Generated by `cargo xtask parity` (`wordcraft-cli parity --markdown`): the word-processor feature catalog (`crates/engine/src/catalog.rs`) compared with the live command registry.
 
-**417 of 448 catalog features have commands (93.1%).**
+**418 of 448 catalog features have commands (93.3%).**
 
 | Tab | Live | Total |
 |---|---|---|
@@ -24,7 +24,7 @@ Generated by `cargo xtask parity` (`wordcraft-cli parity --markdown`): the word-
 | Shape Format | 3 | 6 |
 | Header & Footer | 5 | 5 |
 | Editing | 38 | 38 |
-| Tools | 4 | 6 |
+| Tools | 5 | 6 |
 
 ## Missing
 
@@ -80,6 +80,5 @@ Generated by `cargo xtask parity` (`wordcraft-cli parity --markdown`): the word-
 
 ### Tools
 
-- Customize › Customize Ribbon (`tools.customizeRibbon`)
 - Templates › Templates and Add-ins (`tools.templates`)