Switches the controller from pql.outlinks to pql.meta (outlinks + tags in
one call per file) and strips #heading fragments from link targets, so a
heading link now connects the two notes. Adds a filter bar above the graph:
a path glob that re-queries pql on submit, a depth-from-active selector for
the local graph around the open note, and tri-state tag pills
(neutral / include / exclude). The pane draws the filtered visibleGraph.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>