fix: note list shows incomplete relationships when opening from sidebar

Two root causes:
1. noteListHooks used a stale selection.entry to build relationship groups —
   now looks up the fresh entry from the entries array so relationship updates
   propagate immediately.
2. frontmatterToEntryPatch didn't update entry.relationships — added
   RelationshipPatch support so frontmatter changes also update the
   relationships map in state.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/note-list/noteListHooks.ts

@@ -56,7 +56,10 @@ export function useNoteListData({ entries, selection, query, listSort, listDirec
 
   const searchedGroups = useMemo(() => {
     if (!isEntityView) return []
-    const groups = buildRelationshipGroups(selection.entry, entries)
+    // Look up the fresh entry from the entries array to pick up relationship
+    // updates that happened after the selection was captured.
+    const freshEntry = entries.find((e) => e.path === selection.entry.path) ?? selection.entry
+    const groups = buildRelationshipGroups(freshEntry, entries)
     return filterGroupsByQuery(groups, query)
   }, [isEntityView, selection, entries, query])