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/hooks/useNoteActions.ts

@@ -117,8 +117,8 @@ export function useNoteActions(config: NoteActionsConfig) {
 
   const runFrontmatterOp = useCallback(
     (op: 'update' | 'delete', path: string, key: string, value?: FrontmatterValue, options?: FrontmatterOpOptions) =>
-      runFrontmatterAndApply(op, path, key, value, { updateTab: updateTabContent, updateEntry, toast: setToastMessage }, options),
-    [updateTabContent, updateEntry, setToastMessage],
+      runFrontmatterAndApply(op, path, key, value, { updateTab: updateTabContent, updateEntry, toast: setToastMessage, getEntry: (p) => entries.find((e) => e.path === p) }, options),
+    [updateTabContent, updateEntry, setToastMessage, entries],
   )
 
   return {