R5.5: ElyTable right-click menus, Excel-style; three rounds used, last fixes tested

Grid and header menus share ely_office::menu with ElyDoc. Each item's
availability is the kernel's state for the exact command it runs
(patch 0045). Patch 0046 lets a header select its row or column while
a shape is selected or its text is edited: the view shell ends the
drawing edit, keeps the typed text, leaves drawing mode, then marks.
Ely no longer sends Esc first.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

apps/ely-doc/src/docs.rs

@@ -37,7 +37,7 @@ pub struct Docs {
     pub review: Entity<Review>,
     /// What the right column shows.
     pub side: Side,
-    pub offer: Option<crate::menu::Offer>,
+    pub offer: Option<ely_office::menu::Offer<ely_lok::menu::Offered>>,
     pub merge: Entity<crate::merge::Merge>,
     pub navigator: Entity<crate::navigate::Navigator>,
     /// The left column shows the navigator.