QA-owned boundary coverage for the frozen IF-LOC v1.0 codec, complementing
app-owner's nominal round-trip suite. Pins min/max/resolution limits per wire
field via the pure Encode/Decode seam, staying clear of the no-value sentinels,
and characterises the two sentinel-collision edges (depth -327.68 m, current
0xFFFF) so the contract's documented ranges are enforceable.
40/40 green; full QA gate green (app 43 + server 2). Trace: SRS §3.1, Risk R-3.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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