* refactor(setup): resolve skill destinations per client
* fix(setup): honor active client configuration and skill roots
* fix(setup): validate effective client scopes and Gemini trust
* fix(setup): treat empty OpenCode overrides as unset
An empty OPENCODE_CONFIG_DIR now stays on the XDG directory, and doctor
and setup inspect global OpenCode files when a custom directory is absent.
Uninstall reports one status per client so a missing earlier layer does
not hide a removed registration.
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Co-authored-by: Cursor Agent <cursoragent@cursor.com>
morluto