---
epic: 7
story: 7.6
title: "Sheets Sidebar"
status: draft
---

## Epic 7 — macOS App (Swift/SwiftUI)
**Goal:** A beautiful, native macOS app that feels like it belongs on the platform.

### Story 7.6: Sheets Sidebar

As a **macOS user**,
I want a sidebar that lists my sheets and folders,
So that I can organize, navigate, and manage multiple calculation documents easily.

**Acceptance Criteria:**

**Given** the app is launched with multiple saved sheets
**When** the main window appears
**Then** a `NavigationSplitView` sidebar on the left shows all sheets and folders in a tree structure

**Given** the sidebar is visible
**When** the user clicks on a sheet name
**Then** the two-column editor loads that sheet's content

**Given** multiple sheets exist in the sidebar
**When** the user drags a sheet to a new position
**Then** the sheet reorders in the sidebar and the new order persists

**Given** a sheet exists in the sidebar
**When** the user swipes left on the sheet name (trackpad gesture)
**Then** a delete action is revealed; confirming it deletes the sheet

**Given** a sheet or folder exists in the sidebar
**When** the user right-clicks (or Control-clicks) on the item
**Then** a context menu appears with options such as Rename, Duplicate, Move to Folder, Delete

**Given** the user creates a new folder in the sidebar
**When** the user drags sheets into that folder
**Then** the sheets appear nested under the folder, and the folder can be collapsed/expanded