* Add GitHub branch open target to workspace button (#96)
* refactor: simplify workspace open targets to flat shape
Collapse the editor/url discriminated union into a single OpenTarget
{ id, label, icon, onOpen } so the button renders targets uniformly
and the mutation is shape-agnostic. Drop the heavily-mocked button
test in favor of the URL builder tests, restore the decodeURIComponent
guard for valid-syntax-but-invalid-UTF-8 pathnames, and note the SSH
host alias limitation.
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Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
