fix: ssd streaming and deepseek fixes

src/engine/metal/glm.rs

@@ -2725,6 +2725,7 @@ fn glm_streaming_plan(
     let max_layer = weights
         .layers
         .iter()
+        .chain(weights.nextn.iter())
         .filter_map(|layer| layer.sparse)
         .map(|weights| {
             sparse_expert_bytes(weights, shape.experts)
@@ -3256,7 +3257,7 @@ mod tests {
 
     #[test]
     #[ignore = "requires the 197 GiB GLM 5.2 checkpoint and Apple Metal"]
-    fn resident_and_streamed_glm_match_the_short_code_fixture() {
+    fn resident_and_streamed_glm_match_ds4_decode_oracles() {
         let path = std::env::var("DS4_GLM_MODEL").unwrap_or_else(|_| {
             "../ds4/models/GLM-5.2-UD-IQ2_XXS_RoutedIQ2XXS_blk78Q2K.gguf".into()
         });
@@ -3290,6 +3291,9 @@ mod tests {
                 }
                 Err(error) => panic!("GLM executor failed to open: {error}"),
             };
+            if streamed {
+                assert_eq!(executor.ssd_cache_experts, 671);
+            }
             assert_eq!(executor.prefill(&tokens, |_| true).unwrap(), tokens.len());
             let token = executor
                 .logits()
@@ -3302,6 +3306,23 @@ mod tests {
                 executor.model().token_bytes(token).as_deref(),
                 Some(b");\n".as_slice())
             );
+            let greeting = executor.model().render_prompt(
+                "You are a helpful assistant",
+                "Write one short greeting.",
+                ReasoningMode::Direct,
+            );
+            executor.reset().unwrap();
+            assert_eq!(
+                executor.prefill(&greeting, |_| true).unwrap(),
+                greeting.len()
+            );
+            let mut generated = Vec::new();
+            for _ in 0..4 {
+                let token = argmax(executor.logits());
+                generated.push(token);
+                executor.eval(token).unwrap();
+            }
+            assert_eq!(generated, [9703, 0, 2585, 646]);
         }
     }