- read.rs: count the chunk headers of a sequence first and allocate the
children Vec once (bounded by the input and by the chunk limit).
- aepx.rs: decode_hex sizes its output once; attribute values without
an entity are borrowed instead of copied through decode_entities.
- typed.rs: PropGroup::get compares match names without building a
String (same result as the lossy compare, invalid UTF-8 included).
- write.rs: reserve the exact output size up front (try_reserve, so a
hand-built tree cannot abort on the allocation).
- read.rs, settings.rs, values.rs: use the shared bytes.rs readers.
Output is identical on the corpus (tree, written bytes, import).
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