Calm workbench layout density

backend/tests/test_sprint113_calm_workbench_layout.py

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+from pathlib import Path
+
+
+REPO_ROOT = Path(__file__).resolve().parents[2]
+
+
+def test_calm_workbench_layout_reduces_duplicate_navigation_density() -> None:
+    css = (REPO_ROOT / "frontend" / "src" / "styles" / "app.css").read_text(encoding="utf-8")
+
+    assert "Sprint 113 calm workbench UX pass" in css
+    assert ".workspace-command-bar" in css
+    assert "display: none;" in css
+    assert ".workbench-layout" in css
+    assert "grid-template-columns: 10.25rem minmax(0, 1fr) 18.5rem" in css
+
+
+def test_calm_workbench_layout_keeps_mobile_safe_navigation() -> None:
+    css = (REPO_ROOT / "frontend" / "src" / "styles" / "app.css").read_text(encoding="utf-8")
+
+    assert "@media (max-width: 620px)" in css
+    assert ".workbench-sidebar .nav-item" in css
+    assert "min-width: 7.75rem" in css
+    assert ".status-strip-grid" in css
+    assert "grid-template-columns: repeat(2, minmax(0, 1fr))" in css