CI snapshot v3659

Source snapshot validated by the CI pipeline. This entry does not contain firmware bundles.

Changes:
Merge pull request #2519 from ruvnet/feat/fann-proof-programme

feat(fann): proof tooling and a default-off server shadow (ADR-426)

Source commit: 66b8dcfc08dfb44e0db38eaf278841a2cfdcc816

Container images publish separately through the sensing-server release workflow.
Firmware downloads are attached to the dedicated vX.Y.Z-esp32 releases.