The PCA03 post-Connection extension was previously walked as opaque
bytes — _walk_to_remarks read past AccountRemarks_Extended and the
nine 33-byte-per-slot Description tables only to advance the cursor
to the actual Remarks dict.
This pass keeps the data instead. New PcaAccount fields, all populated
only when FileVersion >= 3:
* account_remarks_extended — free-text installer notes (repr=False)
* zone/unit/button/code/thermostat/area/message/audio_source/audio_zone
_descriptions — per-family {slot: description} dicts
Per-slot format inside each Description block is the same String8(32)
that names use elsewhere: 1 length byte + 32 padded bytes, decoded
to UTF-8 with NUL-strip. The leading u32 count can exceed the family's
actual object count (real panels write the max-slot count regardless
of how many are populated); we read all of them and filter empties.
Live fixture decodes cleanly: every Description table is empty
(homeowner never filled them in — that's reality, not a parser
fault). The hand-built synthetic test in test_pca_file proves the
decode works when the data is actually present (zones 1+2 with
descriptions "FOYER!" and "GARAGE LT").
_walk_to_remarks now returns a _RemarksWalk dataclass aggregating
all of the post-Connection extraction; existing remarks-related
tests updated to use the new return shape.
Full suite: 499 passed, 1 skipped.
Ryan Malloy
362580bccc