v1.5.0: invalid-INS one-byte re-frame + explicit discard logging

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Residual CONCAT mis-frames (4gmodem/A55_sim2/S21p_sim2) traced to a silent
5-byte drop at an invalid-INS T=0 header (0x0f 00 a4 08 04). Drop only the
stray leading byte and re-frame the remaining four via _replay so the real
command (00 a4 08 04 02 2f 00 -> 61 1c) is recovered.

- _note_discard()/_consume_first(): every consumed-but-unemitted byte is
  now logged; idle 0x00/0xFF discards are rate-limited, real data always
  gets an ANN_WARN annotation.
- All read-until-SW loops log skipped non-SW bytes.
- All traces: CONCAT 0; BAD_FCS/GARBAGE 0; test_8/test_7 RESULT OK;
  47/47 unit tests; baseline byte-identical.

History rewritten to a single root commit so no example trace is stored
in the repo (fixtures are local-only, gitignored). README keeps only
generic <trace>.sr placeholders; AGENTS.md retains the fixture names.

...

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catarrh committed 2026-09-09 15:51:09 +03:00

commit d3715c9385

34 files changed

+7855

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