Bundles the iter 8 + iter 9 sync-packet work (§A0.11 + §A0.12) into a
shipped release. v0.6.8 didn't carry the sync emission; v0.6.9 closes
the loop.
What ships:
- csi_collector emits a 32-byte UDP sync packet (magic 0xC511A110)
every CONFIG_C6_SYNC_EVERY_N_FRAMES CSI callbacks (default 20).
- New Kconfig knob lets operators tune cadence from ~0.1 Hz (N=1000)
to ~10 Hz (N=1) without rebuilding — sensible defaults for
mainstream multistatic at ~2 s sync interval.
- Backwards-compatible at the wire level: old aggregators drop the new
magic on existing parser mismatch path.
Build artifacts (both green on IDF v5.4):
- S3 8 MB: 1094 KB, 47% partition slack
- C6 4 MB: 1019 KB, 45% partition slack
The macro define was renamed from SYNC_EVERY_N_FRAMES to
CONFIG_C6_SYNC_EVERY_N_FRAMES so the Kconfig generator wires through.
Header guard preserves the default for builds without the kconfig
applied.
Co-Authored-By: claude-flow <ruv@ruv.net>
4e1b62ab4f