Previously, `openNodes` and `searchNodes` only returned relations where
BOTH endpoints were in the result set (using `&&`). This silently
dropped all relations to/from nodes outside the set — making it
impossible to discover a node's connections without calling `read_graph`
and filtering the entire dataset client-side.
Changed the filter from `&&` to `||` so that any relation with at least
one endpoint in the result set is included. This matches the expected
graph-query semantics: when you open a node, you should see all its
edges, not just edges to other opened nodes.
Fixes#3137
Tests updated and new cases added covering:
- Outgoing relations to nodes not in the open set
- Incoming relations from nodes not in the open set
- Relations connected to a single opened node
- searchNodes returning outgoing relations to unmatched entities
Co-authored-by: Cursor <cursoragent@cursor.com>
