The focused main view now plays the role the staging panel used to,
so the working-tree commands the staging panel offered — commit (and
its variants) and find-base-commit-for-fixup — need to be reachable
there as well.
Gate them to when the focused main view actually shows the working-tree
diff (DiffMainViewTypeStaging), which is exactly the role the staging
panel filled. Over a commit's or stash's diff these commands would
operate on the working tree, unrelated to what's on screen, so the keys
are a no-op there and the bindings don't clutter its keybinding menu.
The gate is re-checked on each press rather than captured at
registration time, since one keybinding set serves the main view over
every panel. That requires reading the panel beneath the main view from
GetKeybindings (to decide whether to show the descriptions), which runs
for off-stack contexts too — at startup and during cheatsheet
generation — so a panic-safe IsInStack guards the NextInStack lookup.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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