Lists every markdown note (nodes) and fetches each one's outlinks
(edges) via the pql.files / pql.outlinks IPC commands, assembling the
file->outlinks map that VaultGraph consumes. Coalesces file-change
bursts into one debounced reload. 1+N calls, since pql exposes no
bulk-outlinks query; acceptable for a spinner-backed, explicitly-opened
view.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>