4 new proptest cases in matter::commissioning::tests. Each fuzzes
~256 random (passcode, discriminator) pairs per cargo-test run →
~1,024 additional commissioning-code trials per CI cycle.
## Invariants enforced under random sampling
- `manual_code_shape_invariants` — for ANY valid (passcode, disc) in
range and not in the §5.1.6.1 disallowed set, from_input MUST
produce: exactly 11 ASCII digits, Verhoeff self-consistent body+
check, 4-3-4 display form with dashes at positions 4 and 8.
- `disallowed_passcodes_always_rejected` — every passcode in the
§5.1.6.1 list MUST be rejected regardless of discriminator.
- `oversized_inputs_always_rejected` — passcode ≥ 2^27 OR
discriminator ≥ 2^12 MUST be rejected, regardless of the other
axis's value.
- `manual_code_deterministic_under_random_input` — same input always
produces same code (uses prop_assume to skip the spec-disallowed
passcodes since they'd Err out before getting to the code-equality
check).
The DISALLOWED_PASSCODES const is hoisted from the example-based
test for reuse across proptest cases.
Lib test count: 420 → 424. Effective ADR-115 fuzz coverage rises to
~3,584 fuzzed trials per CI run (1,280 wire-boundary + 1,280
semantic-bus + 1,024 commissioning).
Refs #776, PR #778.
Co-Authored-By: claude-flow <ruv@ruv.net>
cb3ea9fbd2