protocol: skip duplicate E5 chunks in read_compliance_config

BE11529 sometimes returns frame D with page_key=0x0000 (44 bytes),
identical to the frame B response, inflating cfg to ~1115 bytes and
mis-aligning all field offsets.  Track (page_key, chunk_size) pairs
and drop any repeat before appending to the running config buffer.

minimateplus/protocol.py

@@ -465,7 +465,12 @@ class MiniMateProtocol:
             ("D", 0x002A, _DATA_PARAMS),   # _DATA_PARAMS built above
         ]
 
-        config = bytearray()
+        config   = bytearray()
+        # Track (page_key, chunk_size) pairs to detect when frame D returns the
+        # same page/size as frame B — observed on BE11529 when the device is
+        # busy or connection state is fresh.  Duplicate chunks inflate the cfg
+        # and mis-align field offsets, so we drop them.
+        seen_chunks: set[tuple[int, int]] = set()
 
         for step_name, step_offset, step_params in _STEPS:
             log.debug(
@@ -485,10 +490,22 @@ class MiniMateProtocol:
                 continue
 
             chunk = data_rsp.data[11:]
+            page  = data_rsp.page_key
+            key   = (page, len(chunk))
+
+            if key in seen_chunks:
+                log.warning(
+                    "read_compliance_config: frame %s  page=0x%04X  data=%d  "
+                    "cfg_chunk=%d  DUPLICATE — skipping",
+                    step_name, page, len(data_rsp.data), len(chunk),
+                )
+                continue
+
+            seen_chunks.add(key)
             log.warning(
                 "read_compliance_config: frame %s  page=0x%04X  data=%d  "
                 "cfg_chunk=%d  running_total=%d",
-                step_name, data_rsp.page_key, len(data_rsp.data),
+                step_name, page, len(data_rsp.data),
                 len(chunk), len(config) + len(chunk),
             )
             config.extend(chunk)