* fix(#976): detect command+args (wrapped) hook registrations in installer presence checks
Add referencesHook() helper that inspects both h.command (standard form) and
h.args[] (args-form / wrapped-launcher form) when checking whether a managed
hook is already registered. Rewrite all has*Hook predicates and the
alreadyHas* guards to use it so args-form registrations suppress the duplicate
stock string-command entry that was previously appended on every install/update.
Also add an explicit args-form skip to rewriteLegacyManagedNodeHookCommands so
entries with a non-empty args[] are left untouched (they are intentional user
wrappers, not legacy bare-node commands to migrate).
Extend isManagedHookCommand() in shell-command-projection.cts with an optional
args: unknown[] parameter that checks whether any arg's basename matches the
managed hook surface set — backward compatible; existing callers are unaffected.
Regression test added to tests/install-regressions.test.cjs:
- two-pass install with an args-form SessionStart entry pre-written to
settings.local.json asserts exactly 1 hook entry remains after reinstall
(previously 2 — the original args-form + a new stock string-command duplicate)
- rewriteLegacyManagedNodeHookCommands test asserts args-form entries unchanged
Closes#976
* chore(#976): backfill changeset pr number (994)
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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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