Refactor workbench into task-based UI shell

backend/tests/test_sprint49_workbench_shell_refactor.py

@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+def test_app_uses_task_based_workbench_shell() -> None:
+    app = (ROOT / "frontend" / "src" / "App.tsx").read_text(encoding="utf-8")
+
+    assert "type WorkspaceKey" in app
+    assert "workspaceNavItems" in app
+    assert 'data-testid={`workspace-nav-${item.key}`}' in app
+    assert 'className="workbench-layout"' in app
+    assert 'className="workbench-sidebar"' in app
+    assert 'className="workbench-main"' in app
+    assert 'className="workbench-inspector"' in app
+    assert "activeWorkspace === 'data'" in app
+    assert "activeWorkspace === 'map'" in app
+    assert "activeWorkspace === 'analysis'" in app
+    assert "activeWorkspace === 'ai'" in app
+    assert "activeWorkspace === 'exports'" in app
+    assert "activeWorkspace === 'system'" in app
+
+
+def test_workbench_shell_css_provides_navigation_main_and_inspector_regions() -> None:
+    css = (ROOT / "frontend" / "src" / "styles" / "app.css").read_text(encoding="utf-8")
+
+    assert ".workbench-topbar" in css
+    assert ".context-bar" in css
+    assert ".workbench-layout" in css
+    assert ".workbench-sidebar" in css
+    assert ".nav-item-active" in css
+    assert ".workbench-main" in css
+    assert ".workbench-inspector" in css
+    assert ".workspace-grid-data" in css
+    assert ".workspace-grid-ai" in css