`graphify path` committed each endpoint to _score_nodes()[0]. The full-query
bonus tier only fires when the query equals/prefixes a label, so a query that is
a token subset of the intended label ("Reject-everything judge" vs "Degenerate
Reject-Everything Judge") got no bonus and a node prefix-matching one rare token
("Rejection Summary") could out-score it on IDF alone — anchoring the path on an
unrelated, often disconnected node and returning a false "No path found".
_pick_scored_endpoint() scans the score-ordered list and takes the first
candidate whose label contains EVERY query token, falling back to scored[0] when
none does — so when the head already full-matches (the common case) resolution
is unchanged. Wired into both the `path` CLI and the MCP _tool_shortest_path.
The close-runner-up ambiguity warning now fires only when the picked endpoint is
the raw score head (a full-token override was chosen on coverage, not score, so
the head's margin is irrelevant).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
CJNA