Polish workbench visual shell

backend/tests/test_sprint62_frontend_visual_polish.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+def test_frontend_shell_has_visual_polish_contracts() -> None:
+    app = (ROOT / "frontend" / "src" / "App.tsx").read_text(encoding="utf-8")
+    css = (ROOT / "frontend" / "src" / "styles" / "app.css").read_text(encoding="utf-8")
+
+    assert "workspace-command-bar" in app
+    assert "workspace-nav-cluster" in app
+    assert "--surface-raised" in css
+    assert ".workspace-command-bar" in css
+    assert ".workspace-panel" in css
+    assert ".data-density-grid" in css
+    assert ".result-summary-card" in css
+
+
+def test_primary_panels_use_empty_state_components() -> None:
+    project_panel = (ROOT / "frontend" / "src" / "components" / "project" / "ProjectPanel.tsx").read_text(
+        encoding="utf-8"
+    )
+    dataset_panel = (ROOT / "frontend" / "src" / "components" / "datasets" / "DatasetPanel.tsx").read_text(
+        encoding="utf-8"
+    )
+    detection_lab = (ROOT / "frontend" / "src" / "components" / "detection" / "DetectionLab.tsx").read_text(
+        encoding="utf-8"
+    )
+    segmentation_lab = (
+        ROOT / "frontend" / "src" / "components" / "segmentation" / "SegmentationLab.tsx"
+    ).read_text(encoding="utf-8")
+
+    assert "empty-state" in project_panel
+    assert "empty-state" in dataset_panel
+    assert "result-summary-card" in detection_lab
+    assert "result-summary-card" in segmentation_lab
+    assert "table-scroll" in detection_lab
+    assert "table-scroll" in segmentation_lab