Harden raster pipeline readiness UI

backend/tests/test_sprint95_raster_pipeline_hardening.py

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+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+def test_raster_controls_expose_pipeline_readiness_and_handoff() -> None:
+    raster_controls = (ROOT / "frontend" / "src" / "components" / "datasets" / "RasterControls.tsx").read_text(
+        encoding="utf-8"
+    )
+
+    assert "rasterReadinessItems" in raster_controls
+    assert "rasterGuardrailItems" in raster_controls
+    assert "Raster pipeline readiness" in raster_controls
+    assert "Metadata profile" in raster_controls
+    assert "CRS readiness" in raster_controls
+    assert "Preview artifact" in raster_controls
+    assert "Tile manifest handoff" in raster_controls
+    assert "Clip AOI" in raster_controls
+    assert "Processing guardrails" in raster_controls
+    assert "selectedRasterMetadata?.crs" in raster_controls
+    assert "rasterPreview ?" in raster_controls
+    assert "isRasterTileInputValid" in raster_controls
+
+
+def test_raster_pipeline_readiness_css_contracts() -> None:
+    css = (ROOT / "frontend" / "src" / "styles" / "app.css").read_text(encoding="utf-8")
+
+    assert ".raster-readiness-surface" in css
+    assert ".raster-readiness-grid" in css
+    assert ".raster-readiness-item" in css
+    assert ".raster-readiness-state" in css
+    assert ".raster-guardrail-surface" in css
+    assert ".raster-guardrail-list" in css
+    assert ".raster-manifest-handoff" in css
+    assert "grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));" in css