feat(environment): add painterly skies and living meadows

docs/baselines/painterly_after_metrics.json

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+{
+	"device": "Apple M1 Max (Apple7)",
+	"renderer": "metal",
+	"resolution": "1600x900",
+	"samples": [
+		{
+			"active_npcs": 6,
+			"draw_calls": 825.0,
+			"meadow": {
+				"flower_clump_count": 1680,
+				"multimesh_batch_count": 4,
+				"visible_flower_clump_count": 1680
+			},
+			"msaa_enum": 2,
+			"primitives": 1070038.0,
+			"profile": "high",
+			"render_scale": 1.0,
+			"wall_frame_p50_ms": 16.649,
+			"wall_frame_p95_ms": 17.327
+		},
+		{
+			"active_npcs": 6,
+			"draw_calls": 710.0,
+			"meadow": {
+				"flower_clump_count": 1680,
+				"multimesh_batch_count": 4,
+				"visible_flower_clump_count": 1092
+			},
+			"msaa_enum": 1,
+			"primitives": 810830.0,
+			"profile": "balanced",
+			"render_scale": 0.850000023841858,
+			"wall_frame_p50_ms": 16.672,
+			"wall_frame_p95_ms": 17.06
+		},
+		{
+			"active_npcs": 6,
+			"draw_calls": 657.0,
+			"meadow": {
+				"flower_clump_count": 1680,
+				"multimesh_batch_count": 4,
+				"visible_flower_clump_count": 536
+			},
+			"msaa_enum": 0,
+			"primitives": 645010.0,
+			"profile": "low",
+			"render_scale": 0.699999988079071,
+			"wall_frame_p50_ms": 16.676,
+			"wall_frame_p95_ms": 17.069
+		}
+	],
+	"workload": "Paused main scene, static valley camera; wall time includes vsync"
+}

docs/baselines/painterly_compatibility_metrics.json

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+{
+	"device": "Apple M1 Max",
+	"renderer": "opengl3",
+	"resolution": "1600x900",
+	"samples": [
+		{
+			"active_npcs": 6,
+			"draw_calls": 1304.0,
+			"meadow": {
+				"flower_clump_count": 1680,
+				"multimesh_batch_count": 4,
+				"visible_flower_clump_count": 1680
+			},
+			"msaa_enum": 2,
+			"primitives": 1070038.0,
+			"profile": "high",
+			"render_scale": 1.0,
+			"wall_frame_p50_ms": 22.166,
+			"wall_frame_p95_ms": 23.467
+		},
+		{
+			"active_npcs": 6,
+			"draw_calls": 1166.0,
+			"meadow": {
+				"flower_clump_count": 1680,
+				"multimesh_batch_count": 4,
+				"visible_flower_clump_count": 1092
+			},
+			"msaa_enum": 1,
+			"primitives": 810758.0,
+			"profile": "balanced",
+			"render_scale": 0.850000023841858,
+			"wall_frame_p50_ms": 17.903,
+			"wall_frame_p95_ms": 26.363
+		},
+		{
+			"active_npcs": 6,
+			"draw_calls": 1084.0,
+			"meadow": {
+				"flower_clump_count": 1680,
+				"multimesh_batch_count": 4,
+				"visible_flower_clump_count": 536
+			},
+			"msaa_enum": 0,
+			"primitives": 645010.0,
+			"profile": "low",
+			"render_scale": 0.699999988079071,
+			"wall_frame_p50_ms": 13.533,
+			"wall_frame_p95_ms": 16.623
+		}
+	],
+	"workload": "Paused main scene, static valley camera; wall time includes vsync"
+}