Vadim Yanitskiy a786590906 docs/conf.py: silence autosectionlabel duplicate-label warnings ...

sphinxarg.ext generates generic sub-headings ("Named arguments",
"Positional arguments", "Sub-commands", "General options", ...) for
every argparse command and tool.  These repeat across many files and
trigger large numbers of autosectionlabel duplicate-label warnings.

Two-pronged fix:

* `autosectionlabel_maxdepth = 3` eliminates the depth-4+ warnings
  (sub-headings inside each individual command block).
* `suppress_warnings` per file silences the residual depth-3 collisions
  ("serial reader", "decode_hex", "sub-commands", ...) that still
  appear across tool documentation files.

Cross-references into these generic argparse-generated sections are not
a supported use-case, so suppressing the warnings is appropriate.

Change-Id: I9cdf2a4f6cbd435b16b90ab668205600ffd7c3b0

2026-03-31 19:17:13 +07:00

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