fix: update shortcut settings location

[jcfs]

Updates the documented shortcut location to the plugin detail page and prepares v0.1.1. Verified with format, unit tests, vet, and the full five-platform package build.

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Summary by cubic

Updates the documented hotkey remapping location to Settings → Plugins → Task Manager and prepares the 0.1.1 release.

• The previous docs pointed to Settings → Keyboard shortcuts; the new location matches where the keybinding is set in the UI.
• Bumps the version in Makefile and manifest.yaml and updates the matching comment.

^{Written for commit 4a174de. Summary will update on new commits.}