[Bug] Add dsv4 state_type branch to mooncake disaggregation (#24878)

Co-authored-by: Cheng Wan <cheng.wan@radixark.ai>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

python/sglang/srt/disaggregation/mooncake/conn.py

@@ -995,8 +995,13 @@ class MooncakeKVManager(CommonKVManager):
                     prefill_state_indices,
                     dst_state_data_ptrs,
                 )
-        elif state_type in ["swa", "nsa"]:
-            # SWA and NSA hybrid models do not support different TP sizes yet
+        elif state_type in ["swa", "nsa", "dsv4"]:
+            # SWA / NSA / DSv4 hybrid models do not support different TP sizes
+            # yet. (DSv4 carries a flat heterogeneous state pool of
+            # SWA + compress + indexer buffers; reusing this branch routes it
+            # through the same ``_send_kvcache_generic`` path that
+            # ``get_mla_kv_ptrs_with_pp`` already handles for compressed-MLA
+            # PP/MTP layouts.)
             if (
                 target_rank_registration_info is not None
                 and not self.is_mla_backend