test+docs(adr-110): 6 SyncPacketParser tests + README/user-guide for v0.7.0

Iter 13 — solidifies v0.7.0 as a real, reviewable release.

Tests (archive/v1/tests/unit/test_esp32_binary_parser.py):
- TestSyncPacketParser (6 tests, all passing in 0.27s):
  * test_follower_typical_packet_roundtrips — matches the COM9-witnessed
    sync-pkt #1 byte-for-byte, including the 1,163,565 µs offset that
    §A0.10 measured for the COM9-vs-COM12 boot-time delta
  * test_leader_packet_has_local_close_to_epoch — COM12 leader case,
    flags=0x03, epoch ≈ local
  * test_magic_mismatch_raises — non-sync datagrams don't silently decode
  * test_short_packet_raises — early error vs silent truncation
  * test_all_flag_combinations — every (leader, valid, smoothed) triple
    round-trips independently
  * test_dispatch_distinguishes_csi_from_sync — CSI vs sync magics differ
    so a host can dispatch by leading u32

Docs:
- README C6 hardware row now headlines v0.7.0 (was v0.6.7), names the
  measured 99.56% match / 104 µs stdev / 3.95× suppression numbers, and
  acknowledges the firmware-side ADR-110 substrate closure.
- docs/user-guide.md firmware release table now lists v0.7.0 / v0.6.9 /
  v0.6.8 / v0.6.7 chain with one-liner highlights so 4MB-flash users +
  multistatic operators know which release brings what.

Co-Authored-By: claude-flow <ruv@ruv.net>

docs/user-guide.md

@@ -1118,7 +1118,10 @@ Pre-built binaries are available at [Releases](https://github.com/ruvnet/RuView/
 
 | Release | What It Includes | Tag |
 |---------|-----------------|-----|
-| [v0.6.7](https://github.com/ruvnet/RuView/releases/tag/v0.6.7-esp32) | **Latest** — real LP-core motion-gate RISC-V program (B4 code path complete) + Wi-Fi 6 soft-AP with TWT Responder for two-board iTWT benches (B1/B2 unblock), no router required. Both default off — no behavior change for v0.6.6 fleets ([ADR-110 P9](adr/ADR-110-esp32-c6-firmware-extension.md)) | `v0.6.7-esp32` |
+| [v0.7.0](https://github.com/ruvnet/RuView/releases/tag/v0.7.0-esp32) | **Latest — ADR-110 firmware-side substrate closed.** Adds ESP-NOW mesh substrate with quantified ≤100 µs alignment (104.1 µs smoothed stdev, 3.95× suppression, 99.56 % cross-board match measured live), 32-byte sync-packet UDP emission with operator-tunable cadence, ADR-018 byte 19 bit 4 wire-fix sourced from working ESP-NOW path, Python SyncPacketParser stub for host wiring ([WITNESS-LOG-110 §A0.7-§A0.13](WITNESS-LOG-110.md)) | `v0.7.0-esp32` |
+| [v0.6.9](https://github.com/ruvnet/RuView/releases/tag/v0.6.9-esp32) | Sync-packet UDP emission, `CONFIG_C6_SYNC_EVERY_N_FRAMES` tunable cadence | `v0.6.9-esp32` |
+| [v0.6.8](https://github.com/ruvnet/RuView/releases/tag/v0.6.8-esp32) | ESP-NOW EMA-smoothed cross-board offset (3.95× suppression, 104 µs stdev) | `v0.6.8-esp32` |
+| [v0.6.7](https://github.com/ruvnet/RuView/releases/tag/v0.6.7-esp32) | Real LP-core motion-gate RISC-V program (B4 code path complete) + Wi-Fi 6 soft-AP with TWT Responder for two-board iTWT benches (B1/B2 unblock) | `v0.6.7-esp32` |
 | [v0.5.0](https://github.com/ruvnet/RuView/releases/tag/v0.5.0-esp32) | **Stable (S3 mesh, recommended)** — mmWave sensor fusion (MR60BHA2/LD2410 auto-detect), 48-byte fused vitals, all v0.4.3.1 fixes | `v0.5.0-esp32` |
 | [v0.4.3.1](https://github.com/ruvnet/RuView/releases/tag/v0.4.3.1-esp32) | Fall detection fix ([#263](https://github.com/ruvnet/RuView/issues/263)), 4MB flash ([#265](https://github.com/ruvnet/RuView/issues/265)), watchdog fix ([#266](https://github.com/ruvnet/RuView/issues/266)) | `v0.4.3.1-esp32` |
 | [v0.4.1](https://github.com/ruvnet/RuView/releases/tag/v0.4.1-esp32) | CSI build fix, compile guard, AMOLED display, edge intelligence ([ADR-057](../docs/adr/ADR-057-firmware-csi-build-guard.md)) | `v0.4.1-esp32` |