feat: allow custom sidebar label for type sections (#165)

* feat: allow custom sidebar label for type sections

- Adds sidebarLabel field to vault type config (Rust + frontend)
- Overrides auto-pluralization with user-defined label in sidebar
- Tests updated to cover custom label display

* fix: add missing sidebarLabel field to buildNewEntry and bulk mock generator

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Co-authored-by: Test <test@test.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

src/hooks/useNoteActions.ts

@@ -70,7 +70,7 @@ export function buildNewEntry({ path, slug, title, type, status }: NewEntryParam
     aliases: [], belongsTo: [], relatedTo: [],
     status, owner: null, cadence: null, archived: false, trashed: false, trashedAt: null,
     modifiedAt: now, createdAt: now, fileSize: 0,
-    snippet: '', wordCount: 0, relationships: {}, icon: null, color: null, order: null, outgoingLinks: [],
+    snippet: '', wordCount: 0, relationships: {}, icon: null, color: null, order: null, outgoingLinks: [], sidebarLabel: null,
   }
 }