Fix varregion scene capture and legacy rendering

crates/metacrate-grid-agent/tests/live_llm_vision.rs

@@ -45,7 +45,7 @@ async fn luna_describes_live_renderer_evidence() -> Result<(), Box<dyn Error>> {
     let response = agent
         .send(vec![
             ContentBlock::text(
-                "Describe this rendered virtual-world scene. State whether it contains recognizable textured terrain and mesh scenery, and identify any obvious rendering corruption.",
+                "Describe this rendered virtual-world scene. State whether it contains recognizable detailed textured terrain and mesh scenery, and identify any obvious rendering corruption. End with `QUALITY: PASS` only if the scene is clearly recognizable and has no substantial rendering corruption; otherwise end with `QUALITY: FAIL`.",
             ),
             ContentBlock::image_url(image),
         ])
@@ -61,10 +61,17 @@ async fn luna_describes_live_renderer_evidence() -> Result<(), Box<dyn Error>> {
     if descriptions.is_empty() {
         return Err("Luna returned no snapshot description".into());
     }
+    let passed = descriptions
+        .iter()
+        .any(|description| description.contains("QUALITY: PASS"));
     for description in descriptions {
         println!("LIVE_LLM_VISION={description}");
     }
-    Ok(())
+    if passed {
+        Ok(())
+    } else {
+        Err("Luna rejected the rendered scene quality".into())
+    }
 }
 
 fn live_environment() -> Result<BTreeMap<String, String>, Box<dyn Error>> {