installFromDisk replaced r.plugins/r.byName with a fresh *Instance but
left r.commands keyed to the old pointer and the old module running:
re-installing an enabled plugin blocked its own command re-registration
(RegisterCommand compared ownership by pointer) and kept dispatch routing
into the orphaned module until restart. Reinstall now deactivates the old
instance and clears its bindings, and RegisterCommand compares ownership
by plugin identity (manifest name) — the same plugin re-binds freely, a
different plugin still cannot hijack an owned command.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
