feat(ttl): Add traffic baseline to Script A, tune waits and unit args

Script A: the TRAFFIC-SETUP-STAGE placeholder is now a full loopback
round (ps, init, clear, show, start, stop, report) with 15 s settles, so
the run has a traffic baseline before the soak starts.

Script B: widen the post-clear settle from 3 s to 10 s.
Script C: drop -u 0 from stop/report so both switch units are covered.

Note: Script B still pins -u 0 while A and C now default to both units.

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

src/Script_ABC_Blanton/1_Blanton_Script_A.ttl

@@ -94,10 +94,24 @@ wait prompt_sonic_root
 ;wait prompt_sonic_root
 ;flushrecv
 
-; ========== TRAFFIC-SETUP-STAGE ==========
+; ========== First Traffic Test ==========
-    ;sendln "command"
+wait prompt_sonic_root
+sendln "blanton_traffic_linespeed ps"
+wait prompt_sonic_root
+sendln "blanton_traffic_linespeed init"
+wait prompt_sonic_root
+sendln "blanton_traffic_linespeed clear"
+wait prompt_sonic_root
+pause 15
+sendln "blanton_traffic_linespeed show"
+wait prompt_sonic_root
+sendln "blanton_traffic_linespeed start"
+wait prompt_sonic_root
+pause 15
+sendln "blanton_traffic_linespeed stop"
+wait prompt_sonic_root
+sendln "blanton_traffic_linespeed report"
 
 
-sendln ""
 wait prompt_sonic_root
 messagebox 'Start Script B' 'Script A DONE'

src/Script_ABC_Blanton/2_Blanton_Script_B.ttl

@@ -54,7 +54,7 @@ sendln "blanton_traffic_linespeed init -u 0"
 wait prompt_sonic_root
 sendln "blanton_traffic_linespeed clear -u 0"
 wait prompt_sonic_root
-pause 3
+pause 10
 sendln "blanton_traffic_linespeed show -u 0"
 wait prompt_sonic_root
 sendln "blanton_traffic_linespeed start -u 0"

src/Script_ABC_Blanton/3_Blanton_Script_C.ttl

@@ -33,9 +33,9 @@ sendln "cat ~/hammer/tools/log.stress_ssd"
 
 ; ========== CHECK Traffic counters ==========
 wait prompt_sonic_root
-sendln "blanton_traffic_linespeed stop -u 0"
+sendln "blanton_traffic_linespeed stop"
 wait prompt_sonic_root
-sendln "blanton_traffic_linespeed report -u 0"
+sendln "blanton_traffic_linespeed report"
 
 
 messagebox 'GOOD JOB! Test Case DONE' 'teraterm'