docs(release): Add v1.0.8 notes; wire mgmt ping status into B and C

Script A: the baseline ping window is 30 s rather than 45, and the log
is cleared afterwards so Script B starts from nothing.

Script B: `status` after `start`, and Script C: `status` before `stop`
plus a `cat` of the report. The status line shows both pids and the
replies received per NIC, so a dead link is visible while the soak is
still running instead of only at the end.

docs/release-notes/v1.0.8.md written in the house format.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014RetWKFZFG1ZHcitQAyhwM

docs/release-notes/v1.0.8.md

@@ -0,0 +1,61 @@
+# v1.0.8 — Both management links tested at once, and ARP stops looking like packet loss
+
+## ✨ New features
+
+**Both management NICs are pinged simultaneously and continuously**
+* `mgmt_ping_monitor.sh` no longer alternates fixed bursts. `start` configures both NICs, then pings from each at the same time and keeps accumulating until stopped — so a soak-long run is one continuous measurement rather than a series of snapshots.
+* `stop` renders a report into the log: the last 20 entries per NIC, each one's ping statistics and PASS/FAIL, then `ip -s link show` for both interfaces.
+* Every line is timestamped, and a request that got no reply prints a marker instead of merely being absent — a drop is visible in the tail, not inferred from a gap in the sequence numbers.
+* `status` shows both pids and how many replies each NIC has received so far, which is the quick way to see one side is dead without waiting for the report.
+
+**The USB stress target is detected, not assumed**
+* New `usb_target.sh` reports an inserted USB device's node, mount point or by-id path. Script B asks it for the node and builds the stress command from the answer, so a stick that enumerates as `sdb` no longer sends a write test at whatever `/dev/sda1` happens to be.
+* It excludes whatever disk backs `/` and `/host` — this platform can boot from a USB DOM, which also reports as USB — refuses to guess when several USB disks are present, and when it mounts, verifies the result is actually writable rather than trusting that `mount` succeeded.
+
+**BMC I2C integrity is exercised through the soak**
+* `bmc_monitor.sh` is back in the run and now writes two complementary patterns to a BMC scratch register and reads each back. One pattern alone cannot catch a bit stuck the same way it was written; repeating the pair through the soak turns an intermittent I2C fault into something the log records rather than something the tester has to witness.
+
+**Test artefacts leave the DUT with the run**
+* Script C copies `bmc_poll.log` and `mgmt_ping.log` into the job directory before it is archived to USB, so the monitors' output travels with the `bgctl` job logs.
+* DDR stress now runs continuously instead of stopping after 100 passes, matching the other soak loads.
+
+## 🐛 Bug fixes
+
+**Three FAILs that were not link faults**
+* A bench run reported `FAIL=3` with zero NIC errors, zero drops and sub-millisecond replies. Every failure was missing exactly `icmp_seq=1` and nothing else: once the neighbour entry for the target expires, the first echo request is spent resolving ARP and `ping` counts it as loss. A discarded warm-up ping per NIC now absorbs that, which is what lets the loss threshold stay at zero and still mean something. Raising the threshold instead would have hidden genuine single-packet loss.
+
+**Job logs were being cleared before they were collected**
+* Script C ran `bgctl reset --yes` while killing processes — before the job directory is copied to USB. Moved to after the archive, so a run's own logs are collected before anything clears them.
+
+**The fan controller was bound twice**
+* One of the two MAX31790 controllers received a second `bind` immediately after the first, which could only fail because the driver was already attached.
+
+## 📦 Downloads
+
+| File | Contents |
+|---|---|
+| `Script_ABC_Blanton_V1.0.8.zip` | The full Tera Term working directory, including `Blanton_Script/` to copy onto the DUT |
+
+**After copying to the DUT:**
+
+```bash
+chmod +x ~/Blanton_Script/*.sh      # see below
+grep -rlU $'\r' ~/Blanton_Script    # expect no output
+```
+
+`mgmt_ping_monitor.sh` no longer re-execs itself, so `bash mgmt_ping_monitor.sh start` works without the execute bit. `bmc_monitor.sh` and `usb_target.sh` still need it — and neither git (mode 100644) nor a Windows/USB copy carries it. Without the `chmod`, `start` fails with `Permission denied` and the later `cat` finds nothing: **the section ends up empty and nothing reports an error.**
+
+## ⚠️ Before you run
+
+* **Declare the switch population.** `SWB_UNIT0` / `SWB_UNIT1` in `config.ttl` say which switch units this DUT has. Traffic and the readiness gate both follow them; with neither set the traffic stage is skipped rather than failing against hardware that is not there.
+* **Set the fan speed you want.** `FAN_SPEED` in `config.ttl` is applied at the start of every run.
+* **Management connectivity is in use, not preserved.** Both NICs are up and pinging — drive the run from the serial console.
+* **If the two management NICs share a subnet, keep `ARP_STRICT=1`.** Otherwise the target's ARP can be answered by either NIC and a reply may arrive on the one that did not send. Check `nic_tx` / `nic_rx` on the RESULT line: they are that interface's own counter delta.
+* **Two settings persist to `config_db.json`** and survive a reboot: LLDP is left disabled and the 100G uplinks are left configured. Restore them before the DUT moves on.
+
+## 🔗 Links
+
+* [ARCHITECTURE.md](https://etgit.et-wen.com/etwen/Blanton_TTL_Script/src/branch/main/ARCHITECTURE.md) — test flow, data models, constraints
+* [CLAUDE.md](https://etgit.et-wen.com/etwen/Blanton_TTL_Script/src/branch/main/CLAUDE.md) — commands and the bench gotchas
+
+**Full changelog:** [V1.0.7...V1.0.8](https://etgit.et-wen.com/etwen/Blanton_TTL_Script/compare/V1.0.7...V1.0.8)

src/Script_ABC_Blanton/1_Blanton_Script_A.ttl

@@ -55,6 +55,9 @@
 ;                                                                         + ARP warm-up so a stale neighbour entry is not counted as loss
 ;                                                                         + stop renders last-N per NIC, stats, and both ip -s link show
 ;                       .gitignore                                      Ignore monitor *.raw / *.pid / *.state
+;                       ScriptA                                         MGMT ping baseline 45s -> 30s, clear the log afterwards
+;                       ScriptB                                         Show mgmt_ping status after start
+;                       ScriptC                                         Show mgmt_ping status before stop, cat the report after
 ; =============================================================================
 include "config.ttl"
 
@@ -206,10 +209,12 @@ include "utils/show_dmesg.ttl"
 wait prompt_sonic_root
 sendln "./Blanton_Script/mgmt_ping_monitor.sh start"
 wait prompt_sonic_root
-pause 45
+pause 30
 sendln "~/Blanton_Script/mgmt_ping_monitor.sh stop"
 wait prompt_sonic_root
 sendln "cat ~/Blanton_Script/log/mgmt_ping.log"
+wait prompt_sonic_root
+sendln "~/Blanton_Script/mgmt_ping_monitor.sh clear"
 
 
 ; ========== 100G Port Status ==========

src/Script_ABC_Blanton/2_Blanton_Script_B.ttl

@@ -96,6 +96,9 @@ timeout = 0
 ; ========== 10G/1G MGMT Ping Test ==========
 wait prompt_sonic_root
 sendln "./Blanton_Script/mgmt_ping_monitor.sh start"
+wait prompt_sonic_root
+pause 3
+sendln "./Blanton_Script/mgmt_ping_monitor.sh status"
 
 
 ; ========== 100G Port ==========

src/Script_ABC_Blanton/3_Blanton_Script_C.ttl

@@ -22,8 +22,11 @@ wait prompt_sonic_root
 sendln "systemctl stop qfx5252-bmc-usb-net-test.service"
 ; 10G/1G MGMT Test STOP
 wait prompt_sonic_root
+sendln "~/Blanton_Script/mgmt_ping_monitor.sh status"
+wait prompt_sonic_root
 sendln "~/Blanton_Script/mgmt_ping_monitor.sh stop"
-
+wait prompt_sonic_root
+sendln "cat ~/Blanton_Script/log/mgmt_ping.log"
 
 ; ========== TAKE DATA ==========
 include "utils/setup_pmon.ttl"