{
  "command": "git status --short && echo \"--- branch ---\" && git rev-parse --abbrev-ref HEAD && echo \"--- unpushed ---\" && git rev-list --count origin/main..main 2>/dev/null",
  "description": "Check working tree and branch state"
}

--- branch ---
main
--- unpushed ---
0

{
  "command": "echo \"=== pwa/src vs assets diff ===\" && diff -rq pwa/src android/app/src/main/assets 2>&1 | head -30; echo \"=== last commits touching android/ or pwa/ ===\"; git log --oneline -8 -- android pwa; echo \"=== last commits touching firmware/ ===\"; git log --oneline -8 -- firmware",
  "description": "Compare PWA source to assets copy and list recent commits"
}

=== pwa/src vs assets diff ===
Only in pwa/src: app.css
Only in pwa/src: app.js
Only in android/app/src/main/assets: bench
Only in pwa/src: fixtures.js
Only in pwa/src: icon.svg
Only in pwa/src: index.html
Only in pwa/src: manifest.webmanifest
Only in android/app/src/main/assets: pwa
Only in pwa/src: sw.js
Only in pwa/src: trace-frame.js
=== last commits touching android/ or pwa/ ===
08efa38 fix(pwa): remove the dead FAB slot; gate floater actions on live
17fe100 fix(pwa): report a refused delete; refresh the recordings list while open
5747226 fix(record): stop a recording when the link dies without a detach
275632a feat: remove BLE entirely; kill EELab/MakerIndia except the AOA wire pair
8ad8c30 fix: delete route no longer overloads 409, session-loss detection now marker-based
159ef2f feat(desktop-mirror): shared view prefs — floaters + analyzer toggles
1e51bfa fix(desktop-mirror): operator bugs — quiet reclaim, rec status shape, delete
86c5af1 fix(pwa): adaptive session poll cadence — fix 5-6s approval-to-mirror delay
=== last commits touching firmware/ ===
7e45f7c fix(flash): guard the three unguarded Makefiles
e338a92 fix(esp-gateway): move tapitkart off the PowerBench radio prefix
275632a feat: remove BLE entirely; kill EELab/MakerIndia except the AOA wire pair
840d543 docs(rf): correct the bit-bang SPI cost — it is a stall, not a duty cycle
72a73c6 docs(memory): record the event-marker gap; carry-forward corrections
a582002 chore(hub): strip the b25/b26 autorange bench instruments
42ae6e6 fix(hub): autorange decides on post-hop pairs only — closes the ratchet
560c5e5 fix(hub): 75 mV burden cap on autorange down path; find ratchet root cause

{
  "command": "diff -rq pwa/src android/app/src/main/assets/pwa 2>&1 | head -20; echo \"rc=$?\"",
  "description": "Diff pwa src against assets/pwa hand copy"
}

rc=0

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== device ===\"; adb devices 2>&1 | tail -3\necho \"=== installed version ===\"; adb shell dumpsys package com.powerbench.ai 2>/dev/null | grep -E \"versionName|lastUpdateTime|firstInstall\" | head -5\necho \"=== apk mtime on host ===\"; ls -l android/app/build/outputs/apk/debug/*.apk 2>/dev/null",
  "description": "Check adb device and installed app version"
}

=== device ===
List of devices attached

=== installed version ===
=== apk mtime on host ===
-rw-r--r--@ 1 mpatidar  staff  3720934 Aug 31 23:10 android/app/build/outputs/apk/debug/app-debug.apk

{
  "command": "cd ~/GitHub/LabInABox\nnc -z -w 2 10.x.x.x 5555 && echo \"port open\" || echo \"port CLOSED\"\nadb connect 10.x.x.x:5555 2>&1 | tail -2\nadb devices 2>&1 | tail -3",
  "description": "Probe tablet adb port and connect"
}

Connection to 10.x.x.x port 5555 [tcp/personal-agent] succeeded!
port open
connected to 10.x.x.x:5555
List of devices attached
10.x.x.x:5555	device

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== app installed ===\"; adb shell dumpsys package com.powerbench.ai 2>/dev/null | grep -E \"versionName|lastUpdateTime\" | head -4\necho \"=== bench token ===\"; adb logcat -d -s 'BenchService:V' 2>/dev/null | grep -i \"bench api\" | tail -2",
  "description": "Check installed app and grab bench API token"
}

=== app installed ===
    versionName=0.1.0-m0
    lastUpdateTime=2026-08-30 23:14:54
=== bench token ===

{}

This session is labinabox-0b [3aba98] — the name other sessions use to message it (it is not listed below; a message to it would be a message to yourself).

Peer sessions (1):
  labinabox-ac [f5fd7b]  ·  interactive  ·  started 5d ago

{
  "command": "cd ~/GitHub/LabInABox\nadb logcat -d 2>/dev/null | grep -iE \"bench api|token\" | tail -5\necho \"--- app pid ---\"; adb shell pidof com.powerbench.ai",
  "description": "Search full logcat for bench API token"
}

09-01 19:04:56.271  2298  2558 W PlayCommon: [197] No account for auth token provided
--- app pid ---
1274

{
  "query": "select:SendMessage",
  "max_results": 1
}

{
  "to": "labinabox-ac",
  "summary": "Ask peer to clear before I deploy to tablet",
  "message": "About to run provisioning/deploy.sh to the tablet (10.x.x.x) \u2014 shout in the next couple minutes if you're mid-capture or mid-deploy. Tree is clean on main, installed APK is from 08-30 and the tree's build is 08-31, so I'm shipping the pending PWA/app commits. Not touching hub firmware without the operator's LinkE.",
  "type": "message",
  "recipient": "labinabox-ac",
  "content": "About to run provisioning/deploy.sh to the tablet\u2026"
}

{"success":true,"message":"“Ask peer to clear before I deploy to tablet” → labinabox-ac (another Claude session on this machine)","msg_id":"44b879e1-72ec-4e92-adc8-4d6ed0397a58"}

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== firmware version symbols in hub ===\"\ngrep -rniE \"FW_VER|FIRMWARE_VER|fw_version|VERSION|GIT_HASH|BUILD_ID\" firmware/hub-usbhost/*.c firmware/hub-usbhost/*.h 2>/dev/null | head -20\necho \"=== dbg slot map / header layout comments ===\"\ngrep -rn \"dbg\\[4[0-7]\\]\" firmware/hub-usbhost/main.c | head -10",
  "description": "Search hub firmware for a version constant"
}

=== firmware version symbols in hub ===
firmware/hub-usbhost/main.c:68:// every dual conversion (ADCPRE /4 = 36 MHz ADCCLK, SMP_SEL 0 = 1.5 + 12.5 =
firmware/hub-usbhost/main.c:69:// 14 cyc = 389 ns per conversion, comfortably inside the 500 ns period).
firmware/hub-usbhost/main.c:102:// The envelope is still the min/max of THIS packet's own conversions, so a
firmware/hub-usbhost/main.c:126:// (28.67 uV per count, the one scale in the file header's conversion law), so
firmware/hub-usbhost/main.c:193:#define PACE_DIV 72  // TIM3 @ 144 MHz / 72 = 2.000 MHz conversion trigger
firmware/hub-usbhost/main.c:206:// §4. An earlier version of this comment led with "~50 µs" and that is
firmware/hub-usbhost/main.c:282:	// conversion assumes. The external pull-up meant to guarantee this
firmware/hub-usbhost/main.c:322:	// Analog watchdog on the I channel: hardware compares EVERY conversion
firmware/hub-usbhost/main.c:346:	// Master: one dual conversion per TIM3 TRGO (update event), no CONT.
firmware/hub-usbhost/main.c:409:// the conversion, so no ohms table is needed here.
firmware/hub-usbhost/main.c:475:// Cost of the artifact: at 2.000 Mpair/s a hop threw 4000 conversions into a
firmware/hub-usbhost/main.c:542://      quiet conversion is noise or a zero crossing; a run of them is a state.
firmware/hub-usbhost/main.c:549:// window, already inspecting every conversion at 2 Msps. Only the reaction
firmware/hub-usbhost/main.c:570:		// channel in the low half of RDATAR, so read the conversion that
firmware/hub-usbhost/main.c:593:		// ISR on EVERY under-range conversion — 2 Msps on an idle bus
firmware/hub-usbhost/main.c:953:// so it is blind to 125 of every 126 conversions — a load-step sag that the
firmware/hub-usbhost/main.c:1008:// Copy AND scan in one pass. The first version did a separate scan over the
firmware/hub-usbhost/main.c:1151://   down: AWD ISR on WDHTR — every conversion compared, reaction tens of µs
firmware/hub-usbhost/main.c:1332:	// version of this file wrote the
... [truncated 1062 chars]

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== 16-byte USB header layout (bytes 0..15) ===\"\nsed -n '95,135p' firmware/hub-usbhost/main.c\necho \"=== any version field tablet-side? ===\"\ngrep -rniE \"fwVer|firmwareVersion|hubVersion|hubFw\" android/app/src/main/java pwa/src 2>/dev/null | head -10",
  "description": "Read wire header layout and search tablet for a hub version field"
}

=== 16-byte USB header layout (bytes 0..15) ===
// this as garbage, not a clean misalignment.
// PAIRS_PER_PKT is 164, not 165: the packing group is TWO pairs in SIX
// bytes, and 165 is odd, so an odd count would leave a half-group at the
// packet tail and force a special case on both the packing and unpacking
// sides. 82 whole groups use 492 of 496 payload bytes; the 4 spare bytes
// are left unused on purpose. (Was 124 pairs before this change, 126
// before the 2026-08-18 envelope change — both superseded.)
// The envelope is still the min/max of THIS packet's own conversions, so a
// transient is visible even though the consumer only samples one pair per
// packet (it must stay O(packets); a load-step sag was invisible without
// this — bench 2026-08-18).
#define PKT_SIZE      512
#define PKT_HDR       16                       // seq + flags + envelope
#define PAIRS_PER_PKT (((PKT_SIZE - PKT_HDR) / 6) * 2)   // 164, 492 of 496 B
// Analog-watchdog window on the I channel — the per-sample range detector.
// ONE definition: adc_init loads these into WDHTR/WDLTR and the per-packet
// backup poll in autorange_step compares against the same numbers, so the
// hardware and software paths cannot disagree about what "clipping" means.
// (Two hand-synced copies of a threshold is this repo's most-repeated bug:
// PAIRS_PER_PKT, countToVolts x5, the sweep.py cal constants.)
//
// HI at 90% FS: above this the rung is too small and the reading is about to
// be dishonest about magnitude. LO at ~6% FS: below this more than 94% of the
// ADC's range is unused and the reading is quantisation-bound -- on rung 2
// a 0.67 mA floor is 23 counts, where 1 LSB is 4.3% of the reading.
#define AWD_HI_CNT  3686   // 90% of 4095 -> rung too small (clipping)
#define AWD_LO_CNT   250   // ~6% of FS   -> rung too big (under-ranged)

// ---- Burden cap (operator ruling 2026-08-30: 75 mV) -----------------------
//
// ⚠ THE COUNT *IS* THE BURDEN. The ADC measures the shunt DROP, not curren
... [truncated 657 chars]

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== header bytes 8..15 union (envelope vs pod snapshot) ===\"\ngrep -n \"b16\\|b17\\|hdr\\[8\\]\\|hdr\\[9\\]\\|env_imax\\|// byte\" firmware/hub-usbhost/main.c | sed -n '1,25p'\necho \"=== spare tail bytes note ===\"\ngrep -n \"4 spare\\|spare bytes\\|4 unused\\|tail bytes\" firmware/hub-usbhost/main.c | head",
  "description": "Locate spare header/tail bytes available for a version field"
}

=== header bytes 8..15 union (envelope vs pod snapshot) ===
57://          g_rung_settle), b16 header carries a pod-DVM snapshot,
58://          b17 header carries an eLoad snapshot, b18..24 MARKER (reader's
62://   BOUNDARY on any change. b17 was inside that field until 2026-08-30, so
87:// flags b16: the envelope bytes 8..15 instead carry a pod-DVM snapshot,
97:// bytes, and 165 is odd, so an odd count would leave a half-group at the
140://   one-rung ISR hop  gated env_imax < AR_LOW_CNT (250) -> post-hop <= 2500
160:// taken on a STALE env_imax, since autorange deliberately reads the envelope
230:#define DBG_RXLEN   4   // bytes returned by the descriptor read
330:	// to the per-PACKET env_imax poll. That poll keys on the packet MAXIMUM
440:// (env_imin/env_imax) can be computed over samples from BOTH rungs. Those
446:// dbg: env_imax 4077, g_rung_prev 7, ar_hops 1). Stamped rung 0, count 4077
454:// ⚠ Only the WIRE envelope is suppressed. env_imax also drives autorange's
543://   3. The main loop re-checks env_imax (the whole packet's MAX) before it
918:// ~10 us once claimed here). It does not need to be -- the poll's own input (env_imax) is
963:static uint16_t env_vmin, env_vmax, env_imin, env_imax;
967:// ⚠ TWO ENVELOPES, DELIBERATELY. `env_imax` above is the WIRE envelope and its
1023:// The envelope must still be computed over EVERY sample (env_imax drives
1093:	env_vmin = vlo; env_vmax = vhi; env_imin = ilo; env_imax = ihi;
1156://         commits it, but only if env_imax — the whole packet's max — agrees
1162:// env_imax also still drives the backup poll below, which covers the window
1174:		// code. This path is already gated on env_imax < AR_LOW_CNT (250),
1184:		/* ⚠ ar_imax, NOT env_imax — post-hop pairs only. AR_IMAX_NONE means
2067:					// b16: this header's envelope bytes carry a pod-DVM
2086:					// eLoad, b17. Same event-driven rule as the DVM's: stamp
2090:					// b16 and b17 are mutually exclusive -- one header carries
=== spare tail bytes note
... [truncated 81 chars]

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== recordings dirs, newest last ===\"\nadb shell 'ls -lt /sdcard/Android/data/com.powerbench.ai/files/records/ 2>/dev/null | head -6'\necho \"=== any in-progress (complete:false / no manifest)? ===\"\nadb shell 'for d in $(ls -t /sdcard/Android/data/com.powerbench.ai/files/records/ 2>/dev/null | head -3); do p=/sdcard/Android/data/com.powerbench.ai/files/records/$d; echo \"-- $d\"; ls $p 2>/dev/null | head -4; grep -o \"\\\"complete\\\":[a-z]*\" $p/manifest.json 2>/dev/null || echo \"  NO MANIFEST\"; done'",
  "description": "Check for an in-progress recording before deploying"
}

=== recordings dirs, newest last ===
=== any in-progress (complete:false / no manifest)? ===

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== all branches, is any ahead of main? ===\"\ngit for-each-ref --format='%(refname:short) %(committerdate:short)' refs/heads | head -20\necho \"=== commits on main since installed app (08-30 23:14) ===\"\ngit log --oneline --since=\"2026-08-30 23:14\" -- android pwa\necho \"=== HEAD ===\"; git log --oneline -1",
  "description": "Verify branches and which app commits postdate the install"
}

=== all branches, is any ahead of main? ===
main 2026-09-01
=== commits on main since installed app (08-30 23:14) ===
08efa38 fix(pwa): remove the dead FAB slot; gate floater actions on live
17fe100 fix(pwa): report a refused delete; refresh the recordings list while open
5747226 fix(record): stop a recording when the link dies without a detach
275632a feat: remove BLE entirely; kill EELab/MakerIndia except the AOA wire pair
8ad8c30 fix: delete route no longer overloads 409, session-loss detection now marker-based
=== HEAD ===
6f4baeb docs: session-close branch hygiene rule

{
  "command": "cd ~/GitHub/LabInABox\nadb shell 'ls /sdcard/Android/data/com.powerbench.ai/files/ 2>&1; echo \"---\"; ls /storage/ 2>&1'",
  "description": "Locate the records directory on the card"
}

---
0291-1C0E
emulated
sdcard0
self

{
  "command": "cd ~/GitHub/LabInABox\nadb shell 'ls -t /storage/0291-1C0E/Android/data/com.powerbench.ai/files/records/ 2>&1 | head -5'\necho \"=== newest: complete? ===\"\nadb shell 'd=$(ls -t /storage/0291-1C0E/Android/data/com.powerbench.ai/files/records/ 2>/dev/null | head -1); p=/storage/0291-1C0E/Android/data/com.powerbench.ai/files/records/$d; echo \"dir=$d\"; grep -o \"\\\"complete\\\":[a-z]*\" $p/manifest.json 2>/dev/null || echo \"NO MANIFEST (in-progress?)\"'",
  "description": "Check newest recording on the card for in-progress state"
}

=== newest: complete? ===
dir=
NO MANIFEST (in-progress?)

{
  "command": "cd ~/GitHub/LabInABox\nadb shell 'ls -la /storage/0291-1C0E/Android/data/com.powerbench.ai/files/ 2>&1 | head'",
  "description": "List app files dir on card to confirm no records"
}

total 96
drwxrwx--x 3 u0_a75 sdcard_rw 32768 2026-08-25 18:48 .
drwxrwx--x 3 u0_a75 sdcard_rw 32768 2026-08-25 18:48 ..
drwxrwx--x 2 u0_a75 sdcard_rw 32768 2026-08-30 23:28 records

{
  "command": "bash provisioning/deploy.sh 2>&1 | tail -30",
  "description": "Deploy PWA + app to tablet",
  "timeout": 420000
}

> Task :app:mergeDebugShaders UP-TO-DATE
> Task :app:compileDebugShaders NO-SOURCE
> Task :app:generateDebugAssets UP-TO-DATE
> Task :app:mergeDebugAssets
> Task :app:desugarDebugFileDependencies UP-TO-DATE
> Task :app:compressDebugAssets
> Task :app:dexBuilderDebug
> Task :app:mergeDebugGlobalSynthetics UP-TO-DATE
> Task :app:processDebugJavaRes UP-TO-DATE
> Task :app:mergeDebugJavaResource UP-TO-DATE
> Task :app:checkDebugDuplicateClasses UP-TO-DATE
> Task :app:mergeDebugStartupProfile UP-TO-DATE
> Task :app:mergeExtDexDebug UP-TO-DATE
> Task :app:mergeLibDexDebug UP-TO-DATE
> Task :app:mergeDebugJniLibFolders UP-TO-DATE
> Task :app:mergeDebugNativeLibs NO-SOURCE
> Task :app:stripDebugDebugSymbols NO-SOURCE
> Task :app:validateSigningDebug UP-TO-DATE
> Task :app:writeDebugAppMetadata UP-TO-DATE
> Task :app:writeDebugSigningConfigVersions UP-TO-DATE
> Task :app:mergeProjectDexDebug
> Task :app:packageDebug
> Task :app:createDebugApkListingFileRedirect UP-TO-DATE
> Task :app:assembleDebug

BUILD SUCCESSFUL in 7s
37 actionable tasks: 6 executed, 31 up-to-date
    ~/GitHub/LabInABox/android/app/build/outputs/apk/debug/app-debug.apk
==> Install (via pm to dodge MIUI install-guard)
~/GitHub/LabInABox/android/app/build/outputs/apk/debug/app-debug.apk: 1 file pushed, 0 skipped. 1.8 MB/s (3622478 bytes in 1.929s)

{
  "command": "cd ~/GitHub/LabInABox\nadb shell dumpsys package com.powerbench.ai 2>/dev/null | grep -E \"versionName|lastUpdateTime\"\necho \"--- pid (was 1274) ---\"; adb shell pidof com.powerbench.ai\necho \"--- current activity ---\"; adb shell dumpsys activity activities 2>/dev/null | grep -i \"mResumedActivity\\|topResumedActivity\" | head -2",
  "description": "Verify install timestamp, new pid, and running activity"
}

--- pid (was 1274) ---
adb: device offline
--- current activity ---

{
  "command": "cd ~/GitHub/LabInABox\nfor i in 1 2 3 4 5 6; do\n  adb connect 10.x.x.x:5555 >/dev/null 2>&1\n  s=$(adb devices | grep 10.x.x.x | awk '{print $2}')\n  echo \"try $i: ${s:-none}\"\n  [ \"$s\" = \"device\" ] && break\n  sleep 3\ndone\necho \"=== verify ===\"\nadb shell dumpsys package com.powerbench.ai 2>/dev/null | grep -E \"versionName|lastUpdateTime\"\nadb shell pidof com.powerbench.ai",
  "description": "Reconnect adb and verify the install"
}

try 1: device
=== verify ===
    versionName=0.1.0-m0
    lastUpdateTime=2026-09-01 19:08:46
4752

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== resumed activity ===\"; adb shell dumpsys activity activities 2>/dev/null | grep -iE \"mResumedActivity|topResumedActivity\" | head -2\necho \"=== app log (crashes / bench api token) ===\"; adb logcat -d -s 'BenchService:V' 'AndroidRuntime:E' 2>/dev/null | tail -8",
  "description": "Confirm activity resumed and check for crashes plus token"
}

=== resumed activity ===
    mResumedActivity: ActivityRecord{ef6b4b u0 com.powerbench.ai/.MainActivity t4}
=== app log (crashes / bench api token) ===
09-01 19:09:04.172  3965  3965 E AndroidRuntime: FATAL EXCEPTION: main
09-01 19:09:04.172  3965  3965 E AndroidRuntime: PID: 3965
09-01 19:09:04.172  3965  3965 E AndroidRuntime: DeadSystemException: The system died; earlier logs will point to the root cause
09-01 19:09:04.207  1146  1215 E AndroidRuntime: FATAL EXCEPTION: GoogleApiHandler
09-01 19:09:04.207  1146  1215 E AndroidRuntime: Process: com.google.android.gms.persistent, PID: 1146
09-01 19:09:04.207  1146  1215 E AndroidRuntime: DeadSystemException: The system died; earlier logs will point to the root cause
--------- beginning of system
--------- beginning of main

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== our app errors only ===\"; adb logcat -d 2>/dev/null | grep -iE \"powerbench\" | grep -iE \"fatal|exception|error\" | tail -6\necho \"=== bench api port up? ===\"; nc -z -w2 10.x.x.x 8092 && echo \"8092 OPEN\" || echo \"8092 closed\"\nnc -z -w2 10.x.x.x 8080 && echo \"8080 OPEN\" || echo \"8080 closed\"\necho \"=== uptime since ===\"; adb shell uptime",
  "description": "Check app-specific errors and bench API reachability"
}

=== our app errors only ===
=== bench api port up? ===
Connection to 10.x.x.x port 8092 [tcp/*] succeeded!
8092 OPEN
Connection to 10.x.x.x port 8080 [tcp/http-alt] succeeded!
8080 OPEN
=== uptime since ===
 19:09:49 up 7 min,  0 users,  load average: 17.41, 13.28, 6.61

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== is the hub even attached right now? ===\"\nadb logcat -d 2>/dev/null | grep -iE \"accessory|aoa|usb\" | tail -6\necho \"=== hub firmware tree state vs last flash-worthy commit ===\"\ngit log --oneline -3 -- firmware/hub-usbhost\necho \"=== uncommitted firmware? ===\"; git status --short firmware | head",
  "description": "Check hub attach state and hub firmware commit history"
}

=== is the hub even attached right now? ===
09-01 19:09:44.715  4126  4147 I WindowManager: Focus moving from Window{ea6b4ce u0 StatusBar} to Window{7f29196 u0 com.powerbench.ai/com.powerbench.ai.MainActivity}
09-01 19:09:44.758   299   299 I BufferQueueConsumer: [StatusBar#0](this:0x727d8f7800,id:12,api:1,p:4270,c:299) setDefaultBufferSize: width=1024 height=32
09-01 19:09:44.772   299   424 I BufferQueueProducer: [StatusBar#0](this:0x727d8f7800,id:12,api:1,p:4270,c:299) disconnect(P): api 1
09-01 19:09:44.772   299   424 I BufferQueueConsumer: [StatusBar#0](this:0x727d8f7800,id:12,api:1,p:-1,c:299) getReleasedBuffers: returning mask 0xffffffffffffffff
09-01 19:09:44.774   299   423 I BufferQueueProducer: [StatusBar#0](this:0x727d8f7800,id:12,api:1,p:4270,c:299) connect(P): api=1 producer=(4270:com.android.systemui) producerControlledByApp=true
09-01 19:09:53.818   299   607 I BufferQueueProducer: [StatusBar#0](this:0x727d8f7800,id:12,api:1,p:4270,c:299) queueBuffer: fps=2.84 dur=9149.18 max=8622.83 min=6.02
=== hub firmware tree state vs last flash-worthy commit ===
275632a feat: remove BLE entirely; kill EELab/MakerIndia except the AOA wire pair
840d543 docs(rf): correct the bit-bang SPI cost — it is a stall, not a duty cycle
72a73c6 docs(memory): record the event-marker gap; carry-forward corrections
=== uncommitted firmware? ===

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== guard script present? ===\"; ls -l provisioning/check-target-mcu.sh 2>&1\necho \"=== Makefile flash target ===\"; sed -n '1,60p' firmware/hub-usbhost/Makefile",
  "description": "Inspect hub Makefile flash target and target-MCU guard"
}

=== guard script present? ===
-rwxr-xr-x@ 1 mpatidar  staff  2071 Aug 29 21:43 provisioning/check-target-mcu.sh
=== Makefile flash target ===
# Hub USB1 as HOST (tablet = USB device) bench, ch32fun.
#
# Same conventions as firmware/hub-bringup and firmware/pod-source: builds
# against the external ch32fun tree with the xpack toolchain on PATH (brew's
# riscv64-elf-gcc lacks newlib):
#
#     PATH="$(HOME)/toolchains/xpack-riscv-none-elf-gcc-14.2.0-3/bin:$$PATH" make
#
# Flashing REPLACES the hub bring-up firmware; restore from firmware/hub-bringup.
# The WCH-LinkE is single-access: kill any `minichlink -T` console before
# flashing or the write fails with "Bad USB Operation".

CH32FUN_ROOT ?= $(HOME)/toolchains/ch32fun
PREFIX       ?= riscv-none-elf

all : build

TARGET:=main
TARGET_MCU:=CH32V305
TARGET_MCU_PACKAGE:=CH32V305RBT6

# hsusb_v30x.h/.c live in ch32fun's extralibs, not the core tree.
EXTRA_CFLAGS+=-I. -I$(CH32FUN_ROOT)/extralibs

include $(CH32FUN_ROOT)/ch32fun/ch32fun.mk

build : $(TARGET).bin
clean : cv_clean

# Flash with retry. Since 2026-08-22 this board fails a write roughly every
# other attempt: "Fault on op ... (Parity Bit)" then "Error writing block at
# memory 08xxxxxx (error = -9)", at a DIFFERENT address each time, while the
# link itself reads clean (real UUID, 128 kB, RDPR disabled, five identical
# UUID reads). Retrying lands it, usually within 2-3 tries.
#
# NOT the firmware: proven by A/B on 2026-08-22 — the pre-change image
# (e1189d6) flashed onto itself faults identically, so the image contents are
# not the variable. Not the documented lock-out either: it faults the same way
# on a freshly `-u`-erased, cleanly-halted chip. -a / -A / -B made no
# difference. Suspect supply margin during programming pulses or a marginal
# SWD/USB connection; erase (one bulk op) and reads both succeed, only the
# thousands of pulsed word-writes fail.
#
# ⚠ RETRACTED 2026-08-29 (user ruling). This line used to read "Pre-flight,
# still mandatory: adb shel
... [truncated 992 chars]

{
  "command": "cd ~/GitHub/LabInABox\nsed -n '60,90p' firmware/hub-usbhost/Makefile\necho \"=== guard script ===\"; cat provisioning/check-target-mcu.sh",
  "description": "Read remainder of flash target and the guard script"
}

flash :
	@../../provisioning/check-target-mcu.sh 128
	@i=1; while [ $$i -le $(FLASH_TRIES) ]; do \
		echo "== flash attempt $$i/$(FLASH_TRIES) =="; \
		if $(MAKE) --no-print-directory cv_flash 2>&1 | tee /tmp/hubflash.log \
		   | grep -q "Image written"; then \
			echo "== flashed on attempt $$i =="; exit 0; \
		fi; \
		grep -o "Error writing block at memory [0-9a-f]*" /tmp/hubflash.log | tail -1; \
		i=$$((i+1)); \
	done; \
	echo "== FAILED after $(FLASH_TRIES) attempts =="; exit 1
=== guard script ===
#!/usr/bin/env bash
# Refuse to flash when the connected chip is not the one this target was
# built for.
#
# Why this exists: 2026-08-29, a `make TARGET=eload_console` (CH32V203 pod,
# 32 kB) was run while the LinkE had been moved to the HUB (CH32V305,
# 128 kB). It wrote pod firmware onto the hub. minichlink flashes whatever
# responds -- it has no idea what the image was compiled for -- so nothing
# downstream can catch this. The hub survived because the SWD link stayed
# up and RDPR was disabled, but a wrong-architecture image that RUNS can
# take the core somewhere the debug module cannot halt it (see the
# 2026-08-22 BOOT0 lock-out).
#
# Usage: check-target-mcu.sh <expected-kB> [minichlink]
# Exits 0 on match, 1 on mismatch or unreadable link.
set -uo pipefail

EXPECT_KB="${1:?usage: check-target-mcu.sh <expected-kB> [minichlink]}"
MINICHLINK="${2:-$HOME/toolchains/ch32fun/minichlink/minichlink}"

[ -x "$MINICHLINK" ] || { echo "flash-guard: no minichlink at $MINICHLINK" >&2; exit 1; }

# One probe. A cold link can return garbage on the first read (bench-seen
# 4x all-Fs then a clean UUID), so retry a couple of times before failing --
# the guard must not become the thing that blocks a good flash.
for _ in 1 2 3; do
    INFO="$("$MINICHLINK" -i 2>&1)"
    GOT_KB="$(printf '%s' "$INFO" | sed -n 's/.*Flash Storage: \([0-9]*\) kB.*/\1/p' | head -1)"
    PART="$(printf '%s' "$INFO" | sed -n 's/.*Detected \(CH32[A-Za-z0-9]*\).*/\1/p' | head -1)"
    [ -n "$GOT_KB" 
... [truncated 580 chars]

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== no stale minichlink console holding the LinkE? ===\"\npgrep -fl minichlink || echo \"none running (good)\"\necho \"=== link probe ===\"\nprovisioning/check-target-mcu.sh 128; echo \"guard rc=$?\"",
  "description": "Check for stale minichlink and probe the LinkE target"
}

=== no stale minichlink console holding the LinkE? ===
none running (good)
=== link probe ===
flash-guard: ok -- CH32V305 128 kB matches target
guard rc=0

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== AOA link live right now? ===\"\nadb shell 'getprop sys.usb.state' 2>/dev/null\nadb shell 'dumpsys usb 2>/dev/null | grep -iE \"accessory|connected\" | head -4'",
  "description": "Check tablet AOA/USB state before flash"
}

=== AOA link live right now? ===
accessory,adb
    mCurrentFunctions: accessory,adb
    mCurrentOemFunctions: accessory,adb
    mConnected: true
    mCurrentAccessory: UsbAccessory[mManufacturer=MakerIndia, mModel=EELabBench, mDescription=ADC stream bench, mVersion=1.0, mUri=https://labinabox.ai, mSerial=0001]

{
  "command": "cd ~/GitHub/LabInABox/firmware/hub-usbhost\nexport PATH=\"$HOME/toolchains/xpack-riscv-none-elf-gcc-14.2.0-3/bin:$PATH\"\nmake build 2>&1 | tail -15",
  "description": "Build hub firmware",
  "timeout": 180000
}

riscv-none-elf-gcc -E -P -x c -DTARGET_MCU=CH32V305 -DMCU_PACKAGE=2 -DTARGET_MCU_LD=3 -DTARGET_MCU_MEMORY_SPLIT=3 ~/toolchains/ch32fun/ch32fun/ch32fun.ld > ~/toolchains/ch32fun/ch32fun/generated_CH32V305RBT6_3.ld
riscv-none-elf-gcc -o main.elf ~/toolchains/ch32fun/ch32fun/ch32fun.c main.c   -g -Os -flto -ffunction-sections -fdata-sections -fmessage-length=0 -msmall-data-limit=8 -fno-tree-loop-distribute-patterns -DCH32V30x_D8C -march=rv32imafc -mabi=ilp32f -DCH32V30x=1 -DTARGET_MCU_MEMORY_SPLIT=3 -static-libgcc -I/usr/include/newlib -I~/toolchains/ch32fun/ch32fun/../extralibs -I~/toolchains/ch32fun/ch32fun -nostdlib -I. -Wall -I. -I~/toolchains/ch32fun/extralibs -Wl,--print-memory-usage -Wl,-Map=main.map -lgcc -T ~/toolchains/ch32fun/ch32fun/generated_CH32V305RBT6_3.ld -Wl,--gc-sections
Memory region         Used Size  Region Size  %age Used
           FLASH:       11644 B       128 KB      8.88%
             RAM:       27748 B        32 KB     84.68%
riscv-none-elf-objdump -S main.elf > main.lst
riscv-none-elf-objcopy -R .storage  -O binary main.elf main.bin
riscv-none-elf-objcopy -j .storage -O binary main.elf main_ext.bin
riscv-none-elf-objcopy -O ihex main.elf main.hex

{
  "command": "cd ~/GitHub/LabInABox/firmware/hub-usbhost\nexport PATH=\"$HOME/toolchains/xpack-riscv-none-elf-gcc-14.2.0-3/bin:$PATH\"\nmake flash 2>&1 | tail -25",
  "description": "Flash hub firmware with retry",
  "timeout": 420000
}

flash-guard: ok -- CH32V305 128 kB matches target
== flash attempt 1/6 ==
== flashed on attempt 1 ==

{
  "command": "cd ~/GitHub/LabInABox\nsleep 3\necho \"=== AOA re-attached? ===\"\nadb connect 10.x.x.x:5555 >/dev/null 2>&1\nadb shell 'getprop sys.usb.state' 2>/dev/null\nadb shell 'dumpsys usb 2>/dev/null | grep -iE \"mCurrentAccessory|mConnected\" | head -3'",
  "description": "Verify AOA link re-established after flash"
}

=== AOA re-attached? ===
accessory,adb
    mConnected: true
    mCurrentAccessory: UsbAccessory[mManufacturer=MakerIndia, mModel=EELabBench, mDescription=ADC stream bench, mVersion=1.0, mUri=https://labinabox.ai, mSerial=0001]

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== reader alive? app log ===\"\nadb logcat -d 2>/dev/null | grep -iE \"powerbench|aoa|accessory\" | grep -viE \"BufferQueue|WindowManager\" | tail -8",
  "description": "Check app log for reader/AOA activity post-flash"
}

=== reader alive? app log ===
09-01 19:12:41.498  4752  4752 I MainActivity: AOA reader started for EELabBench
09-01 19:12:41.500  4752  6538 I AoaAccessoryReader: AOA stream open, readChunk=16384
09-01 19:12:41.503  4752  6538 I AoaAccessoryReader: first data: 16384 bytes
09-01 19:12:42.700  4752  6539 I AoaAccessoryReader: command sent cmd=8 arg=0
09-01 19:12:42.700  4752  6539 I AoaAccessoryReader: command sent cmd=3 arg=50
09-01 19:12:42.700  4752  6539 I AoaAccessoryReader: command sent cmd=4 arg=48
09-01 19:12:42.701  4752  6539 I AoaAccessoryReader: command sent cmd=7 arg=1
09-01 19:12:51.000  6532  6532 I ADB_SERVICES: service_to_fd shell,v2,raw:dumpsys usb 2>/dev/null | grep -iE "mCurrentAccessory|mConnected" | head -3

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== bench token ===\"\nTOK=$(adb logcat -d -s 'BenchService:V' 2>/dev/null | grep -oiE \"token[=: ]+[A-Za-z0-9]+\" | tail -1 | grep -oE \"[A-Za-z0-9]+$\")\necho \"token=${TOK:-NOT FOUND}\"\nif [ -n \"$TOK\" ]; then\n  echo \"--- status sample 1 ---\"; curl -s -m 5 \"http://10.x.x.x:8092/status?token=$TOK\" | head -c 400; echo\n  sleep 2\n  echo \"--- status sample 2 ---\"; curl -s -m 5 \"http://10.x.x.x:8092/status?token=$TOK\" | head -c 400; echo\nfi",
  "description": "Fetch bench API status twice to confirm data flowing"
}

=== bench token ===
token=NOT FOUND

{
  "command": "cd ~/GitHub/LabInABox\nM=\"$HOME/toolchains/ch32fun/minichlink/minichlink\"\necho \"=== dbg[] snapshot (SWD attach resets, so this is N s after boot) ===\"\n\"$M\" -r + 0x20000000 192 2>&1 | tail -16",
  "description": "Read hub dbg array over SWD"
}

=== dbg[] snapshot (SWD attach resets, so this is N s after boot) ===
Read protection: disabled
Detecting Memory Area
Interface Setup
Read 192 bytes
20000000: 00 10 57 40 0d 00 00 00 01 00 00 00 0c 00 00 00 
20000010: 12 00 00 00 01 2d d1 18 00 00 00 00 02 00 00 00 
20000020: 0d 00 00 00 23 00 00 00 3a 00 00 00 a9 00 00 00 
20000030: d0 00 00 00 01 00 00 00 00 00 00 00 b5 b5 b5 b5 
20000040: 10 a9 00 00 12 01 00 02 00 00 00 40 00 72 23 00 
20000050: 22 00 00 00 01 00 00 00 d0 00 00 00 00 7b 37 00 
20000060: 02 00 00 00 01 01 00 00 00 00 00 00 b6 84 06 00 
20000070: e6 b5 04 00 b6 84 06 00 00 00 00 00 00 46 52 4e 
20000080: a1 84 06 00 24 00 00 00 6b 00 4d 00 01 04 00 00 
20000090: 00 00 00 00 08 f2 11 00 96 ea 05 00 77 2e 09 00 
200000a0: 24 00 00 00 0e 01 00 00 05 00 00 00 a4 00 00 00 
200000b0: 0f 03 06 00 00 00 00 00 00 00 00 00 00 00 00 00

{
  "command": "cd ~/GitHub/LabInABox\nsleep 4\nadb connect 10.x.x.x:5555 >/dev/null 2>&1\necho \"=== USB state ===\"; adb shell 'getprop sys.usb.state' 2>/dev/null\necho \"=== reader restarted after SWD reset? ===\"\nadb logcat -d 2>/dev/null | grep -iE \"AoaAccessoryReader|AOA reader\" | tail -5",
  "description": "Confirm AOA recovered after SWD-induced reset"
}

=== USB state ===
accessory,adb
=== reader restarted after SWD reset? ===
09-01 19:13:18.233  4752  6574 I AoaAccessoryReader: first data: 16384 bytes
09-01 19:13:19.419  4752  6575 I AoaAccessoryReader: command sent cmd=8 arg=0
09-01 19:13:19.423  4752  6575 I AoaAccessoryReader: command sent cmd=3 arg=50
09-01 19:13:19.424  4752  6575 I AoaAccessoryReader: command sent cmd=4 arg=48
09-01 19:13:19.431  4752  6575 I AoaAccessoryReader: command sent cmd=7 arg=1

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== home UI: overruns + seq gaps ===\"\ngrep -rniE \"overrun|seqgap|seq gap|gaps\" pwa/src/app.js | head -20",
  "description": "Find overrun and seq gap in the PWA home UI"
}

=== home UI: overruns + seq gaps ===
pwa/src/app.js:142:    seqGaps: 0, lostPackets: 0, deviceOverruns: 0, totalBytes: 0,
pwa/src/app.js:2879:   * the whole stream red forever. Loss fraction = (gaps + overruns) /
pwa/src/app.js:2884:    var loss = pkts > 0 ? (hub.seqGaps + hub.deviceOverruns) / pkts : 0;
pwa/src/app.js:2971:      '<div class="stat"><div class="big mono ' + cls(hub.seqGaps) + '">' +
pwa/src/app.js:2972:        fmtInt(hub.seqGaps) + '</div><div class="lbl">seq gaps</div></div>' +
pwa/src/app.js:2973:      '<div class="stat"><div class="big mono ' + cls(hub.deviceOverruns) + '">' +
pwa/src/app.js:2974:        fmtInt(hub.deviceOverruns) + '</div><div class="lbl">overruns</div></div>' +
pwa/src/app.js:3699:        '<div class="stat"><div class="big mono ' + cls(hub.seqGaps) + '">' +
pwa/src/app.js:3700:          fmtInt(hub.seqGaps) + '</div><div class="lbl">seq gaps</div></div>' +
pwa/src/app.js:3701:        '<div class="stat"><div class="big mono ' + cls(hub.deviceOverruns) + '">' +
pwa/src/app.js:3702:          fmtInt(hub.deviceOverruns) + '</div><div class="lbl">overruns</div></div>' +
pwa/src/app.js:3715:    // The hub-link card's numbers (rate, gaps, overruns) now live in the
pwa/src/app.js:4767:      hub.seqGaps = s.seqGaps || 0;
pwa/src/app.js:4769:      hub.deviceOverruns = s.deviceOverruns || 0;

{
  "command": "cd ~/GitHub/LabInABox\nsed -n '2870,2895p' pwa/src/app.js\necho \"=== Kotlin side ===\"\ngrep -rniE \"seqGaps|deviceOverruns|lostPackets\" android/app/src/main/java --include=*.kt | head -20",
  "description": "Read loss-fraction logic and find Kotlin sources"
}

near-zero currents read as offset, which is why this is labelled raw. */
  /* MIRRORED in android .../pipeline/Units.kt (trace ingest) — change both. */
  function countToAmps(c, rung) {
    var uv = c * 28.67;
    return uv / 1000 / RUNG_MOHM[rung];      // µV / mΩ = A
  }

  /* One STREAMING pill whose COLOR carries the loss grade, replacing the old
   * binary LOSSY flip — a single gap in an hours-long session used to flag
   * the whole stream red forever. Loss fraction = (gaps + overruns) /
   * packets carried (totalBytes/512), cumulative over the session:
   * green < 0.1%, amber to 1%, red above. */
  function streamPill() {
    var pkts = (hub.totalBytes || 0) / 512;
    var loss = pkts > 0 ? (hub.seqGaps + hub.deviceOverruns) / pkts : 0;
    var cls = loss < 0.001 ? "ok" : loss <= 0.01 ? "agent" : "raw";
    return '<span class="pill ' + cls + '">STREAMING</span>';
  }

  /* One place that turns the capture stream into a displayable number, so
   * the analyzer card and the floating widgets cannot drift on either the
   * liveness gate or which voltage is meant. `dutV` and not bus volts: the
   * shunt matrix sits in the DUT's return path, so an external meter at the
   * output agrees with dutV, not with bus. */
  function anzRead(pick) {
    var live = hub.running && anz.haveSample;
=== Kotlin side ===
(eval):4: no matches found: --include=*.kt

{
  "command": "cd ~/GitHub/LabInABox\ngrep -rniE \"seqGaps|deviceOverruns\" android/app/src/main/java 2>/dev/null | head -20",
  "description": "Find seqGaps and deviceOverruns in Kotlin"
}

android/app/src/main/java/com/powerbench/ai/MainActivity.kt:386:                put("seqGaps", s.seqGaps)
android/app/src/main/java/com/powerbench/ai/MainActivity.kt:388:                put("deviceOverruns", s.deviceOverruns)
android/app/src/main/java/com/powerbench/ai/MainActivity.kt:524:                put("seqGaps", s.drops)
android/app/src/main/java/com/powerbench/ai/MainActivity.kt:525:                put("deviceOverruns", r?.deviceOverruns ?: 0)
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:46:        val seqGaps: Long,        // host lost packets
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:48:        val deviceOverruns: Long, // device-side ring overran (flags bit0)
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:163:            var seqGaps = 0L
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:165:            var deviceOverruns = 0L
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:193:                            seqGaps++
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:199:                        if (flags and 1 != 0) deviceOverruns++
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:216:                    Log.i(TAG, "%.1f Mbit/s  pkts=%d  seqGaps=%d lost=%d devOverrun=%d"
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:217:                        .format(mbps, packets, seqGaps, lostPackets, deviceOverruns))
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:222:                        seqGaps = seqGaps,
android/app/src/main/java/com/powerbench/ai/usb/HubUsbReader.kt:224:                        deviceOverruns = deviceOverruns,
android/app/src/main/java/com/powerbench/ai/usb/AoaAccessoryReader.kt:180:    @Volatile var deviceOverruns: Long = 0
android/app/src/main/java/com/powerbench/ai/usb/AoaAccessoryReader.kt:549:                            if (lastFlags and 1 != 0) deviceOverruns++

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== AoaAccessoryReader: overrun + seq/drops ===\"\nsed -n '535,575p' android/app/src/main/java/com/powerbench/ai/usb/AoaAccessoryReader.kt\necho \"=== drops field ===\"\ngrep -n \"var drops\\|drops++\\|drops =\" android/app/src/main/java/com/powerbench/ai/usb/AoaAccessoryReader.kt | head",
  "description": "Read AOA reader overrun and drop counting"
}

=== AoaAccessoryReader: overrun + seq/drops ===
                            val seq = ((hdr[0].toLong() and 0xff)) or
                                ((hdr[1].toLong() and 0xff) shl 8) or
                                ((hdr[2].toLong() and 0xff) shl 16) or
                                ((hdr[3].toLong() and 0xff) shl 24)
                            if (haveExpected && seq != expected) drops++
                            expected = (seq + 1) and 0xffffffffL
                            haveExpected = true
                            // Hub state echo rides every header; still
                            // O(packets) — no payload word is touched.
                            lastFlags = ((hdr[4].toInt() and 0xff)) or
                                ((hdr[5].toInt() and 0xff) shl 8) or
                                ((hdr[6].toInt() and 0xff) shl 16) or
                                ((hdr[7].toInt() and 0xff) shl 24)
                            // b0 = hub ring overran while building THIS packet.
                            if (lastFlags and 1 != 0) deviceOverruns++
                            // Hub-computed envelope of this packet's own
                            // PAIRS_PER_PKT conversions (164 since Task 8) —
                            // merged across the display window. This sees
                            // every conversion; the old client-side version
                            // saw 1 pair in 126 and missed transients.
                            val u16 = { o: Int ->
                                (hdr[o].toInt() and 0xff) or
                                    ((hdr[o + 1].toInt() and 0xff) shl 8)
                            }
                            // rung/marker are unconditional -- they describe
                            // the STATE this packet's payload was captured
                            // under, independent of whether the envelope
                            // bytes happen to carry a pod-DVM snapshot this
                  
... [truncated 1091 chars]

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== firmware: flag b0 set where? ===\"\ngrep -n \"adc_overruns\\|0x1u\\|flags |= 1\\b\\|FLAG_OVERRUN\" firmware/hub-usbhost/main.c | head -15\necho \"=== resync / overrun block ===\"\nsed -n '1995,2045p' firmware/hub-usbhost/main.c",
  "description": "Find where firmware sets the overrun flag bit 0"
}

=== firmware: flag b0 set where? ===
1785:	uint32_t adc_overruns = 0;
2022:						adc_overruns++;
2218:			dbg[33] = adc_overruns;
=== resync / overrun block ===
					//
					// INSTRUMENTED 2026-08-23 to answer "is every counted
					// overrun a real data loss?" This branch trips on a
					// THRESHOLD, not on an actual lap: (SEGS-1)*PAIRS_PER_PKT
					// is 6396 of 6560 pairs = 97.5% full, so when it fires the
					// DMA writer has NOT yet overwritten unread data — a full
					// segment of margin is still intact. Measured 2026-08-23
					// across two conditions: 23 trips, 23 pre-emptive, ZERO
					// true laps. Any hole here is therefore SELF-INFLICTED,
					// which is why the resync now drains one segment rather
					// than dumping to the writer. Slots:
					//   dbg[40] trips (all of them — see below)
					//   dbg[42] total pairs discarded by resyncs (>>10)
					//   dbg[43] worst single discard, in pairs
					//
					// dbg[41] used to count "true laps" as `fill >= RING_PAIRS`
					// and was DELETED 2026-08-23 (review finding): `fill` is a
					// modulo result, bounded by RING_PAIRS-1 by construction,
					// so that test can never be true and the slot was pinned at
					// 0 — it read as evidence when it was arithmetic. A lap is
					// in fact INVISIBLE from this side: once the writer passes
					// rd, fill wraps to a small number indistinguishable from an
					// ordinary near-empty ring. The claim that trips here are
					// pre-emptive rests on the THRESHOLD arithmetic below
					// (97.5% full, a full segment of margin), not on a counter.
					if( fill >= (SEGS - 1) * PAIRS_PER_PKT )
					{
						adc_overruns++;
						/* One segment skipped per trip, since the resync now
						   DRAINS rather than dumps. Was `fill - PAIRS_PER_PKT`
						   under the old jump-to-writer behaviour. */
						uint32_t discarded = PAIRS_PER_PKT;
						dbg[40]++;
						g_pairs_discarded += discarded;
						dbg[42] = (uint32_t)( g_pairs_discarded >> 10 );
						if( disca
... [truncated 774 chars]

{
  "command": "cd ~/GitHub/LabInABox\ngrep -nE \"#define (SEGS|RING_PAIRS|PAIRS_PER_PKT|PKT_SIZE|PKT_HDR)\" firmware/hub-usbhost/main.c",
  "description": "Read ring geometry constants"
}

106:#define PKT_SIZE      512
107:#define PKT_HDR       16                       // seq + flags + envelope
108:#define PAIRS_PER_PKT (((PKT_SIZE - PKT_HDR) / 6) * 2)   // 164, 492 of 496 B
216:#define SEGS       40
217:#define RING_PAIRS (SEGS * PAIRS_PER_PKT)

{
  "command": "cd ~/GitHub/LabInABox\nsed -n '210,225p' firmware/hub-usbhost/main.c\necho \"=== the staging loop around the overrun branch ===\"\nsed -n '1975,1998p' firmware/hub-usbhost/main.c",
  "description": "Read ring sizing comment and the enclosing staging loop"
}

// (was 2.48 ms), 25.6 kB of the 32 kB RAM. This is DELIBERATE, not fallout:
// widening the ring window from 2.48 to 3.28 ms (+32%) is the whole point —
// it makes a consumer stall less likely to lap the ring before the reader
// catches up. Dropping SEGS to claw back RAM (e.g. 30 -> 2.46 ms) would
// hand back exactly the stall margin this change exists to buy. Do not
// reduce SEGS without re-deriving the stall-margin requirement first.
#define SEGS       40
#define RING_PAIRS (SEGS * PAIRS_PER_PKT)
static volatile uint32_t ring[RING_PAIRS];

/* Debug window at a fixed RAM address. minichlink cannot read peripheral space
   while the core runs — it returns reset values, which look exactly like "the
   write never happened" — so the firmware publishes its own view here.
   Read with: minichlink -r + 0x20000000 64 */
volatile uint32_t dbg[48] __attribute__((section(".data.dbg"), used));

=== the staging loop around the overrun branch ===
		// 512 B packets require the HS link. On a FS fallback (8.4 Mbit) the
		// ADC outruns the wire ~10x anyway, so the pump simply refuses rather
		// than inventing a truncated format nothing parses.
		if( blasting && attached && ( USBHSD->SPEED_TYPE & 0x03 ) == 1 )
		{
			uint32_t t_blast = CYC_NOW();
			dbg[37]++;                               // bursts entered
			for( int b = 0; b < 256 && blasting; b++ )
			{
				// Command poll interleaved with the stream: ~0.05% bus tax.
				if( ( b & 63 ) == 0 ) usb_cmd_poll();
				if( !staged )
				{
					uint32_t wr   = RING_PAIRS - DMA1_Channel1->CNTR;
					uint32_t fill = (wr - rd + RING_PAIRS) % RING_PAIRS;
					uint32_t flags = 0;

					// Writer closing on the unread tail: skip one segment to
					// restore headroom and flag the discontinuity as the
					// DEVICE's.
					//
					// INSTRUMENTED 2026-08-23 to answer "is every counted
					// overrun a real data loss?" This branch trips on a
					// THRESHOLD, not on an actual lap: (SEGS-1)*PAIRS_PER_PKT

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== bench API routes ===\"\ngrep -rn \"\\\"/status\\\"\\|\\\"/stream\\\"\\|\\\"/trace\\\"\\|uri ==\\|when (uri\" android/app/src/main/java/com/powerbench/ai/bench/*.kt 2>/dev/null | head -20\necho \"=== ls bench dir ===\"; ls android/app/src/main/java/com/powerbench/ai/bench/ 2>/dev/null",
  "description": "Find Bench API routes and stream endpoint"
}

Exit code 1
=== bench API routes ===
(eval):3: no matches found: android/app/src/main/java/com/powerbench/ai/bench/*.kt
=== ls bench dir ===

{
  "command": "cd ~/GitHub/LabInABox\ngrep -rn \"/status\" android/app/src/main/java --include=\"*.kt\" -l 2>/dev/null | head\necho \"--- find bench server file ---\"\ngrep -rln \"8092\\|BenchService\\|Bench API\" android/app/src/main/java 2>/dev/null | head",
  "description": "Locate the Bench API server source"
}

android/app/src/main/java/com/powerbench/ai/MainActivity.kt
android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt
--- find bench server file ---
android/app/src/main/java/com/powerbench/ai/MainActivity.kt
android/app/src/main/java/com/powerbench/ai/pipeline/PlaybackFeed.kt
android/app/src/main/java/com/powerbench/ai/service/RecordCatalog.kt
android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt
android/app/src/main/java/com/powerbench/ai/service/HttpServer.kt
android/app/src/main/java/com/powerbench/ai/service/BenchService.kt
android/app/src/main/java/com/powerbench/ai/service/BenchBus.kt

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== routes ===\"\ngrep -nE \"uri\\s*==|startsWith\\(\\\"/|\\\"/[a-z]+\\\"\" android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt | head -20\necho \"=== /stream WS cadence ===\"\ngrep -n \"stream\\|Thread.sleep\\|1000\\|interval\" android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt | head -20",
  "description": "Read Bench API routes and stream cadence"
}

=== routes ===
247:        if (session.uri == "/session/request") return serveSessionRequest(session)
248:        if (session.uri == "/session/claim") return serveSessionClaim(session)
251:            "/status" -> serveStatus()
252:            "/src" -> serveSrc(session)
253:            "/cmd" -> serveCmd(session)
254:            "/record" -> serveRecord(session)
255:            "/synth" -> serveSynth(session)
256:            "/records" -> serveRecordsList()
257:            "/prefs" -> servePrefs(session)
258:            "/session" -> serveSessionStatus()
263:                if (session.uri.startsWith("/records/")) serveRecordsFile(session)
912:        if (handshake.uri == "/trace") TraceSocket(handshake) else StreamSocket(handshake)
915:        private val ok = hs.uri == "/stream" && authorized(hs)
=== /stream WS cadence ===
39: *   WS   /stream?token=…   every stats frame as a JSON text frame (~1 Hz).
94: *                          downstream of a view toggle can hurt a running
113: *                          one part (e.g. `part-000.pbr`), streamed from disk
114: *                          as `application/octet-stream` with a real
279:     *   POST /synth?token=..&pattern=REALISTIC&rate=1000000&ms=12000
457:     * JSON; `/records/<name>/<part>` (two segments) streams that part.
606:            "application/octet-stream",
633:     * memory — NanoHTTPD pumps the stream in chunks and closes it.
642:            "application/octet-stream",
820:     * Returns BOTH tokens on success -- `/stream` and `/trace` are gated on
915:        private val ok = hs.uri == "/stream" && authorized(hs)
917:        private val listener: (String) -> Unit = streamListener(
931:            // differ in shape from the rest of the stream (withRecordStatus).
945:            // Read-only stream; commands go through POST /src.
1026:         * broken stream and never reaches `doClose`, the sole caller of
1065:         * ⚠ ONE function for `/status` AND WS `/stream`. Two hand-written
1069:       
... [truncated 309 chars]

{
  "command": "cd ~/GitHub/LabInABox\nadb connect 10.x.x.x:5555 >/dev/null 2>&1\necho \"=== token in logcat? ===\"\nadb logcat -d -s 'BenchService:V' 2>/dev/null | tail -5\necho \"=== grep wider ===\"\nadb logcat -d 2>/dev/null | grep -iE \"bench api|benchToken|token\" | tail -5",
  "description": "Try to recover bench API token from logcat"
}

=== token in logcat? ===
--------- beginning of crash
--------- beginning of system
--------- beginning of main
=== grep wider ===
09-01 19:09:24.405  4126  4147 I WindowManager: Failed to capture screenshot of Token{fa3b928 ActivityRecord{ef6b4b u0 com.powerbench.ai/.MainActivity t4}} appWin=Window{955bd3b u0 Splash Screen com.powerbench.ai} drawState=4
09-01 19:22:39.713  6596  6679 W PlayCommon: [288] No account for auth token provided

{
  "command": "cd ~/GitHub/LabInABox\ngrep -rn \"token\" android/app/src/main/java/com/powerbench/ai/service/BenchService.kt 2>/dev/null | head -12",
  "description": "Find how the bench token is generated and stored"
}

android/app/src/main/java/com/powerbench/ai/service/BenchService.kt:38:            val token = prefs.getString(API_TOKEN_KEY, null) ?: ByteArray(16)
android/app/src/main/java/com/powerbench/ai/service/BenchService.kt:42:            api = BenchApiServer(token).also { it.start(0, false) }
android/app/src/main/java/com/powerbench/ai/service/BenchService.kt:45:            Log.i(TAG, "Bench API up on 0.0.0.0:${BenchApiServer.PORT} token=$token")
android/app/src/main/java/com/powerbench/ai/service/BenchService.kt:108:        private const val API_TOKEN_KEY = "api_token"

{
  "command": "cd ~/GitHub/LabInABox\nadb shell \"run-as com.powerbench.ai cat /data/data/com.powerbench.ai/shared_prefs/*.xml 2>/dev/null | grep -i api_token\" 2>&1 | head -3",
  "description": "Read persisted API token from app prefs"
}

(Bash completed with no output)

{
  "command": "cd ~/GitHub/LabInABox\nadb shell \"run-as com.powerbench.ai ls /data/data/com.powerbench.ai/shared_prefs/ 2>&1\" | head\necho \"--- try dump ---\"\nadb shell \"run-as com.powerbench.ai sh -c 'cat /data/data/com.powerbench.ai/shared_prefs/*.xml' 2>&1\" | head -20",
  "description": "List and dump shared prefs"
}

WebViewChromiumPrefs.xml
bench.xml
--- try dump ---
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
    <int name="lastVersionCodeUsed" value="495106123" />
</map>
<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
    <string name="vp.anz.show.v">1</string>
    <int name="anz_rung" value="3" />
    <int name="src_mv" value="5000" />
    <boolean name="anz_auto" value="true" />
    <string name="api_token">[REDACTED-HEX]</string>
    <string name="vp.anz.show.i">1</string>
    <string name="vp.fw.open">[&quot;pdvm&quot;]</string>
    <string name="vp.anz.windowS">1</string>
    <int name="src_ma" value="480" />
    <string name="vp.anz.show.p">0</string>
</map>

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\ncurl -s -m 5 \"http://10.x.x.x:8092/status?token=$TOK\" | python3 -c \"import sys,json; d=json.load(sys.stdin); print(json.dumps({k:v for k,v in d.items() if any(s in k.lower() for s in ['overrun','gap','byte','run','rate','drop'])}, indent=1))\"",
  "description": "Check status fields for overrun and byte counters"
}

{
 "recRateHz": 0,
 "recBytes": 0,
 "recDroppedEntries": 0,
 "recDroppedRingPairs": 0,
 "recDroppedQueueBoxes": 0,
 "running": true,
 "totalBytes": 3901505536,
 "drops": 0,
 "seqGaps": 0,
 "deviceOverruns": 554,
 "srcRun": false,
 "rung": 7,
 "iRung": 7
}

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nfor i in 1 2 3; do\n  curl -s -m 5 \"http://10.x.x.x:8092/status?token=$TOK\" \\\n   | python3 -c \"import sys,json;d=json.load(sys.stdin);print(d['deviceOverruns'], d['totalBytes'], d['seqGaps'], d['rung'], d['running'])\"\n  sleep 2\ndone",
  "description": "Sample overrun counter three times to confirm deltas move"
}

585 4184686592 0 7 True
586 4198744064 0 7 True
588 4211277824 0 7 True

{
  "command": "cd ~/GitHub/LabInABox\nSP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nmkdir -p $SP\ncat > $SP/ovr.sh <<'EOF'\n#!/bin/bash\nTOK=[REDACTED-HEX]\nOUT=$1; DUR=$2; IVL=2\necho \"t,overruns,totalBytes,seqGaps,rung\" > $OUT\nEND=$(( $(date +%s) + DUR ))\nwhile [ $(date +%s) -lt $END ]; do\n  T=$(date +%s)\n  R=$(curl -s -m 4 \"http://10.x.x.x:8092/status?token=$TOK\" \\\n      | python3 -c \"import sys,json;d=json.load(sys.stdin);print('%d,%d,%d,%d'%(d['deviceOverruns'],d['totalBytes'],d['seqGaps'],d['rung']))\" 2>/dev/null)\n  [ -n \"$R\" ] && echo \"$T,$R\" >> $OUT\n  sleep $IVL\ndone\necho DONE\nEOF\nchmod +x $SP/ovr.sh\nnohup $SP/ovr.sh $SP/idle.csv 180 > $SP/ovr.log 2>&1 &\necho \"started pid $!\"",
  "description": "Start 3-minute overrun capture in background",
  "run_in_background": true
}

Command running in background with ID: bac0jz3bf. Output is being written to: /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/bac0jz3bf.output. You will be notified when it completes. To check interim output, use Read on that file path.
Session cwd remains ~/GitHub/LabInABox; directory changes made by the backgrounded command do not apply to subsequent commands.

{
  "command": "sleep 25; SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad; wc -l < $SP/idle.csv; tail -4 $SP/idle.csv",
  "description": "Verify capture is logging rows"
}

<tool_use_error>Blocked: sleep 25 followed by: SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad wc -l tail -4 $SP/idle.csv. To wait for a condition, use Monitor with an until-loop (e.g. `until <check>; do sleep 2; done`). To wait for a command you started, use run_in_background: true. Do not chain shorter sleeps to work around this block.</tool_use_error>

{
  "command": "SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\npython3 - <<'EOF'\nimport csv\np=\"/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/idle.csv\"\nrows=list(csv.DictReader(open(p)))\nrows=[{k:int(v) for k,v in r.items()} for r in rows]\nprint(\"samples:\",len(rows),\"span:\",rows[-1]['t']-rows[0]['t'],\"s\")\ntot=rows[-1]['overruns']-rows[0]['overruns']\nspan=rows[-1]['t']-rows[0]['t']\nprint(\"overruns total: %d  mean %.3f/s\"%(tot,tot/span))\nprint(\"seqGaps delta:\",rows[-1]['seqGaps']-rows[0]['seqGaps'])\nmb=(rows[-1]['totalBytes']-rows[0]['totalBytes'])/1e6\nprint(\"bytes: %.1f MB  = %.2f Mbit/s  pkts %.0f\"%(mb,mb*8/span,(rows[-1]['totalBytes']-rows[0]['totalBytes'])/512))\nd=[]\nfor a,b in zip(rows,rows[1:]):\n    dt=b['t']-a['t']\n    if dt>0: d.append((b['overruns']-a['overruns'],dt,b['t']-rows[0]['t']))\nrates=sorted(x[0]/x[1] for x in d)\nn=len(rates)\nprint(\"\\nper-sample rate /s: min %.2f p50 %.2f p90 %.2f p99 %.2f max %.2f\"%(\n rates[0],rates[n//2],rates[int(n*.9)],rates[int(n*.99)],rates[-1]))\nzero=sum(1 for x in d if x[0]==0)\nprint(\"intervals with ZERO overruns: %d/%d (%.0f%%)\"%(zero,len(d),100*zero/len(d)))\nprint(\"\\ntop 8 bursts (count, dt, t+s):\")\nfor c,dt,t in sorted(d,reverse=True)[:8]: print(\"  %3d in %ds  at t+%ds  (%.1f/s)\"%(c,dt,t,c/dt))\nprint(\"\\nloss: %d pairs = %.2f ms = %.5f%% of capture\"%(tot*164,tot*164/2000,100*tot*164/(span*2e6)))\nEOF",
  "description": "Analyze overrun capture for bursts and distribution"
}

samples: 9 span: 17 s
overruns total: 18  mean 1.059/s
seqGaps delta: 0
bytes: 109.3 MB  = 51.44 Mbit/s  pkts 213504

per-sample rate /s: min 0.00 p50 0.50 p90 4.00 p99 4.00 max 4.00
intervals with ZERO overruns: 3/8 (38%)

top 8 bursts (count, dt, t+s):
    8 in 2s  at t+15s  (4.0/s)
    4 in 2s  at t+6s  (2.0/s)
    4 in 2s  at t+2s  (2.0/s)
    1 in 2s  at t+8s  (0.5/s)
    1 in 2s  at t+4s  (0.5/s)
    0 in 3s  at t+11s  (0.0/s)
    0 in 2s  at t+17s  (0.0/s)
    0 in 2s  at t+13s  (0.0/s)

loss: 2952 pairs = 1.48 ms = 0.00868% of capture

{
  "command": "SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\ncat $SP/ovr.log 2>&1 | tail -5\necho \"=== task output ===\"\ntail -5 /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/bac0jz3bf.output 2>&1",
  "description": "Check why capture script exited early"
}

=== task output ===
started pid 64450

[exited with code 0]

{
  "command": "cd ~/GitHub/LabInABox\nSP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nbash $SP/ovr.sh $SP/idle2.csv 240\nwc -l < $SP/idle2.csv",
  "description": "Run 4-minute overrun capture as tracked background task",
  "timeout": 300000,
  "run_in_background": true
}

Command running in background with ID: bncsorto3. Output is being written to: /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/bncsorto3.output. You will be notified when it completes. To check interim output, use Read on that file path.
Session cwd remains ~/GitHub/LabInABox; directory changes made by the backgrounded command do not apply to subsequent commands.

{
  "command": "SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nuntil [ -f $SP/idle2.csv ] && [ $(wc -l < $SP/idle2.csv) -ge 118 ]; do sleep 10; done\necho \"rows: $(wc -l < $SP/idle2.csv)\"",
  "description": "Wait for capture to accumulate rows",
  "timeout": 300000
}

Exit code 143
Command timed out after 5m 0s

{
  "command": "SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nwc -l < $SP/idle2.csv\npython3 - <<'EOF'\nimport csv\np=\"/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/idle2.csv\"\nrows=[{k:int(v) for k,v in r.items()} for r in csv.DictReader(open(p))]\nspan=rows[-1]['t']-rows[0]['t']; tot=rows[-1]['overruns']-rows[0]['overruns']\nprint(\"samples %d  span %ds\"%(len(rows),span))\nprint(\"overruns %d  mean %.3f/s\"%(tot,tot/span))\nprint(\"seqGaps delta %d\"%(rows[-1]['seqGaps']-rows[0]['seqGaps']))\nby=rows[-1]['totalBytes']-rows[0]['totalBytes']\nprint(\"%.1f MB  %.2f Mbit/s\"%(by/1e6,by*8/1e6/span))\nd=[]\nfor a,b in zip(rows,rows[1:]):\n    dt=b['t']-a['t']\n    if dt>0: d.append((b['overruns']-a['overruns'],dt,b['t']-rows[0]['t']))\nr=sorted(x[0]/x[1] for x in d); n=len(r)\nprint(\"\\nrate /s: min %.2f p25 %.2f p50 %.2f p75 %.2f p90 %.2f p95 %.2f p99 %.2f max %.2f\"%(\n r[0],r[n//4],r[n//2],r[3*n//4],r[int(n*.9)],r[int(n*.95)],r[int(n*.99)],r[-1]))\nz=sum(1 for x in d if x[0]==0)\nprint(\"zero-overrun intervals: %d/%d (%.0f%%)\"%(z,len(d),100*z/len(d)))\nmx=max(r)\nprint(\"burst-to-median ratio: %.0fx\"%(mx/r[n//2]) if r[n//2]>0 else \"median is ZERO\")\nprint(\"\\ntop 10 bursts:\")\nfor c,dt,t in sorted(d,reverse=True)[:10]: print(\"  %3d in %ds at t+%3ds (%.1f/s)\"%(c,dt,t,c/dt))\n# how much of total loss lives in the worst 10% of intervals\ns=sorted(d,reverse=True); top=sum(c for c,_,_ in s[:max(1,len(s)//10)])\nprint(\"\\nworst 10%% of intervals carry %d/%d = %.0f%% of all overruns\"%(top,tot,100*top/tot))\nprint(\"loss: %d pairs = %.1f ms = %.5f%% of capture\"%(tot*164,tot*164/2000,100*tot*164/(span*2e6)))\nEOF",
  "description": "Analyze the 4-minute overrun capture"
}

113
samples 112  span 238s
overruns 170  mean 0.714/s
seqGaps delta 0
1477.4 MB  49.66 Mbit/s

rate /s: min 0.00 p25 0.00 p50 0.50 p75 1.00 p90 2.00 p95 2.50 p99 4.00 max 4.50
zero-overrun intervals: 44/111 (40%)
burst-to-median ratio: 9x

top 10 bursts:
    9 in 2s at t+163s (4.5/s)
    8 in 2s at t+ 21s (4.0/s)
    6 in 2s at t+167s (3.0/s)
    6 in 2s at t+165s (3.0/s)
    5 in 2s at t+184s (2.5/s)
    5 in 2s at t+111s (2.5/s)
    5 in 2s at t+ 58s (2.5/s)
    5 in 2s at t+ 23s (2.5/s)
    4 in 2s at t+223s (2.0/s)
    4 in 2s at t+210s (2.0/s)

worst 10% of intervals carry 61/170 = 36% of all overruns
loss: 27880 pairs = 13.9 ms = 0.00586% of capture

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== /record route: params ===\"\ngrep -n \"serveRecord\" -A 30 android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt | grep -iE \"rate|note|tags|param|start|stop|POST\" | head -15",
  "description": "Read /record route parameters"
}

=== /record route: params ===
83- *   POST /prefs?token=…    merge a flat JSON object of string values into
84- *                          the store ([serveSetPrefs]). ⚠ Deliberately NOT
85- *                          session-gated either, unlike every other POST in
97- *                          Bounded (not enumerated) — see [serveSetPrefs]
145- *   POST /synth?token=…&session=…&pattern=&rate=&ms=
151- *                          out another's legitimate `/record?start=` through
158- *   POST /session/request  no token at all -- deliberately unauthenticated
170- *                          must stop polling, never retry from this one);
263:                if (session.uri.startsWith("/records/")) serveRecordsFile(session)
279-     *   POST /synth?token=..&pattern=REALISTIC&rate=1000000&ms=12000
286-        if (session.method != Method.POST)
287-            return json(Response.Status.METHOD_NOT_ALLOWED, """{"error":"POST only"}""")
289-        // .start()/.stop() against the real records volume and holds the
292-        // /record?start= (it would read the singleton as busy and report
293-        // started:false) through a route neither of them can see. NOT

{
  "command": "cd ~/GitHub/LabInABox\nsed -n '/POST \\/record?token/,/^ \\*   POST \\/synth/p' android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt | head -25",
  "description": "Read /record route docs"
}

*   POST /record?token=…&session=…&start=<name>&rate=<hz>&note=<text>
 *   POST /record?token=…&session=…&stop=1
 *                          drive a recording headlessly, via [BenchBus]'s
 *                          registered recorder for start (same JS-bridge path
 *                          the UI uses) and [RecordSession] directly for stop
 *                          (stop is idempotent and has no hub-link
 *                          dependency). Bench token AND session token on both
 *                          start and stop.
 *   GET  /record?token=…&estimate=<hz>
 *                          a pure read (rate + free space -> estimated
 *                          duration), so it is NOT session-gated even though
 *                          it shares a route with the two writes above — see
 *                          [serveRecord].
 *   GET  /records?token=…  recordings catalog JSON from the registered
 *                          [BenchBus.Records] — the SAME listing the UI
 *                          renders (`{"files":[…],"activeName":…,
 *                          "freeBytes":…}`), so the two surfaces cannot
 *                          disagree about what is on disk. Bench token only.
 *   GET  /prefs?token=…    shared VIEW preferences as a flat JSON object
 *                          (which floaters are open, analyzer trace
 *                          toggles/window -- NEVER floater/screen position,
 *                          per the 2026-08-30 user ruling) from the
 *                          registered [BenchBus.ViewPrefs]. A pure read of a
 *                          non-hardware store, so -- like `/status` -- NEVER
 *                          session-gated: the tablet must be able to keep

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\necho \"=== session status ===\"; curl -s -m5 \"http://10.x.x.x:8092/session?token=$TOK\"; echo\necho \"=== free space + estimate at 1M ===\"; curl -s -m5 \"http://10.x.x.x:8092/record?token=$TOK&estimate=1000000\"; echo",
  "description": "Check session state and 1 Msps recording estimate"
}

=== session status ===
{"held":false,"pending":[]}
=== free space + estimate at 1M ===
{"freeBytes":31905677312,"bytesPerSec":1656314.7,"seconds":19263,"secondsFloor":11964}

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/session/request\" -d \"name=bench-1msps\"; echo\nsleep 2\ncurl -s -m5 \"http://10.x.x.x:8092/session?token=$TOK\"; echo",
  "description": "Request a bench session"
}

{"pendingId":"[REDACTED-HEX]"}
{"held":false,"pending":[{"id":"[REDACTED-HEX]","addr":"10.x.x.x"}]}

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nPID=[REDACTED-HEX]\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/session/claim?id=$PID\"; echo",
  "description": "Attempt to claim the pending session"
}

{"sessionToken":"[REDACTED-TOKEN]","benchToken":"[REDACTED-TOKEN]"}

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nST=[REDACTED-HEX]\necho \"=== WARM-UP run (discarded) ===\"\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/record?token=$TOK&session=$ST&start=warmup-discard&rate=1000000&note=warmup\"; echo",
  "description": "Start warm-up recording at 1 Msps"
}

=== WARM-UP run (discarded) ===
{"started":true}

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nST=[REDACTED-HEX]\nS=$(date +%s); while [ $(( $(date +%s) - S )) -lt 25 ]; do sleep 5; done\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/record?token=$TOK&session=$ST&stop=1\"; echo\nsleep 2\ncurl -s -m5 \"http://10.x.x.x:8092/status?token=$TOK\" | python3 -c \"import sys,json;d=json.load(sys.stdin);print('overruns',d['deviceOverruns'],'recording',d.get('recording'))\"",
  "description": "Stop warm-up after 25s",
  "timeout": 60000
}

{"stopped":true}
overruns 1000 recording False

{
  "command": "cd ~/GitHub/LabInABox\nSP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\ncat > $SP/rec.sh <<'EOF'\n#!/bin/bash\nTOK=[REDACTED-HEX]\nST=[REDACTED-HEX]\nOUT=$1; DUR=$2\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/record?token=$TOK&session=$ST&start=bench-1msps-burst&rate=1000000&note=burst-study\" >/dev/null\necho \"t,overruns,totalBytes,seqGaps,recBytes,recDropRing,recDropQueue,recDropEntries\" > $OUT\nEND=$(( $(date +%s) + DUR ))\nwhile [ $(date +%s) -lt $END ]; do\n  T=$(date +%s)\n  R=$(curl -s -m4 \"http://10.x.x.x:8092/status?token=$TOK\" | python3 -c \"\nimport sys,json\nd=json.load(sys.stdin)\nprint('%d,%d,%d,%d,%d,%d,%d'%(d['deviceOverruns'],d['totalBytes'],d['seqGaps'],\n d.get('recBytes',0),d.get('recDroppedRingPairs',0),d.get('recDroppedQueueBoxes',0),d.get('recDroppedEntries',0)))\" 2>/dev/null)\n  [ -n \"$R\" ] && echo \"$T,$R\" >> $OUT\n  sleep 2\ndone\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/record?token=$TOK&session=$ST&stop=1\"\necho \" DONE\"\nEOF\nchmod +x $SP/rec.sh\nbash $SP/rec.sh $SP/rec1m.csv 180",
  "description": "Run 3-minute 1 Msps recording with counter sampling",
  "timeout": 300000,
  "run_in_background": true
}

Command running in background with ID: bbwgod3ge. Output is being written to: /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/bbwgod3ge.output. You will be notified when it completes. To check interim output, use Read on that file path.
Session cwd remains ~/GitHub/LabInABox; directory changes made by the backgrounded command do not apply to subsequent commands.

{
  "command": "SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nuntil [ -f $SP/rec1m.csv ] && [ $(wc -l < $SP/rec1m.csv) -ge 60 ]; do sleep 15; done\necho \"rows $(wc -l < $SP/rec1m.csv)\"; tail -3 $SP/rec1m.csv",
  "description": "Wait for recording capture rows to accumulate",
  "timeout": 280000
}

rows       60
1788271629,1012,8890990592,0,178386406,0,0,0
1788271631,1012,8906637312,0,182022401,0,0,0
1788271634,1013,8920793088,0,185072065,0,0,0

{
  "command": "SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nuntil grep -q DONE /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/bbwgod3ge.output 2>/dev/null; do sleep 15; done\necho \"capture complete: $(wc -l < $SP/rec1m.csv) rows\"",
  "description": "Wait for the 1 Msps recording bench to finish",
  "timeout": 280000
}

capture complete:       81 rows

{
  "command": "python3 - <<'EOF'\nimport csv\np=\"/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/rec1m.csv\"\nrows=[{k:int(v) for k,v in r.items()} for r in csv.DictReader(open(p))]\nspan=rows[-1]['t']-rows[0]['t']; tot=rows[-1]['overruns']-rows[0]['overruns']\nprint(\"=== 1 Msps RECORDING, %d samples, %ds ===\"%(len(rows),span))\nprint(\"overruns: %d  mean %.3f/s\"%(tot,tot/span))\nprint(\"seqGaps: %d\"%(rows[-1]['seqGaps']-rows[0]['seqGaps']))\nfor k,lbl in [('recDropRing','ring pairs'),('recDropQueue','queue boxes'),('recDropEntries','entries')]:\n    print(\"recDropped %-12s %d\"%(lbl,rows[-1][k]-rows[0][k]))\nrb=rows[-1]['recBytes']-rows[0]['recBytes']\nprint(\"recBytes %.1f MB (%.2f MB/s)\"%(rb/1e6,rb/1e6/span))\nd=[]\nfor a,b in zip(rows,rows[1:]):\n    dt=b['t']-a['t']\n    if dt>0: d.append((b['overruns']-a['overruns'],dt,b['t']-rows[0]['t']))\nr=sorted(x[0]/x[1] for x in d); n=len(r)\nprint(\"\\nrate /s: p50 %.2f p90 %.2f p99 %.2f max %.2f\"%(r[n//2],r[int(n*.9)],r[int(n*.99)],r[-1]))\nz=sum(1 for x in d if x[0]==0)\nprint(\"zero-overrun intervals: %d/%d (%.0f%%)\"%(z,len(d),100*z/len(d)))\nprint(\"top 5 bursts:\", \", \".join(\"%d in %ds\"%(c,dt) for c,dt,_ in sorted(d,reverse=True)[:5]))\nlost=tot*164\nprint(\"\\n=== TOTAL SAMPLES LOST (all causes) ===\")\nprint(\"hub overruns : %6d pairs (%.2f ms)\"%(lost,lost/2000))\nprint(\"ring drops   : %6d pairs\"%(rows[-1]['recDropRing']-rows[0]['recDropRing']))\nprint(\"queue boxes  : %6d\"%(rows[-1]['recDropQueue']-rows[0]['recDropQueue']))\nprint(\"expected pairs in %ds @2Mpair/s: %d\"%(span,span*2000000))\nprint(\"LOSS = %.5f%%  (1 hole per %.1f s avg, each 82us)\"%(100*lost/(span*2e6), span/tot if tot else 0))\nEOF",
  "description": "Analyze 1 Msps recording bench"
}

=== 1 Msps RECORDING, 80 samples, 177s ===
overruns: 3  mean 0.017/s
seqGaps: 0
recDropped ring pairs   0
recDropped queue boxes  0
recDropped entries      0
recBytes 251.4 MB (1.42 MB/s)

rate /s: p50 0.00 p90 0.00 p99 0.50 max 0.50
zero-overrun intervals: 76/79 (96%)
top 5 bursts: 1 in 3s, 1 in 2s, 1 in 2s, 0 in 3s, 0 in 3s

=== TOTAL SAMPLES LOST (all causes) ===
hub overruns :    492 pairs (0.25 ms)
ring drops   :      0 pairs
queue boxes  :      0
expected pairs in 177s @2Mpair/s: 354000000
LOSS = 0.00014%  (1 hole per 59.0 s avg, each 82us)

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\ncurl -s -m5 \"http://10.x.x.x:8092/records?token=$TOK\" | python3 -m json.tool 2>&1 | head -40",
  "description": "List recordings on the card before deleting"
}

{
    "files": [
        {
            "name": "bench-1msps-burst",
            "rateHz": 1000000,
            "startMs": 1788271503546,
            "durationMs": 179192,
            "note": "burst-study",
            "tags": [],
            "parts": 1,
            "sizeBytes": 254698698,
            "complete": true
        },
        {
            "name": "warmup-discard",
            "rateHz": 1000000,
            "startMs": 1788271453875,
            "durationMs": 10524,
            "note": "warmup",
            "tags": [],
            "parts": 1,
            "sizeBytes": 14914030,
            "complete": true
        }
    ],
    "activeName": null,
    "freeBytes": 31632850944
}

{
  "command": "cd ~/GitHub/LabInABox\ngrep -n \"DELETE\\|serveRecordsFile\\|delete\" android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt | grep -iE \"delete\" | head -8",
  "description": "Find the delete route"
}

117: *   POST /records/<name>?token=…&session=…&delete=1
118: *                          delete that recording ([serveRecordsDelete]).
133: *                          window: a refused delete (invalid, missing, or
135: *                          .delete]'s KDoc; not reimplemented here, see
140: *                          conflict -- a merely-refused delete was logging
156: *                          as the delete route above -- reserving 409 for
313:        // ⚠ NOT Status.CONFLICT: same latent bug as the old delete-route 409
482:            // ?delete=1 is BUG 4's delete route (USER RULING 2026-08-31, see

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nST=[REDACTED-HEX]\nfor n in bench-1msps-burst warmup-discard; do\n  echo -n \"$n -> \"\n  curl -s -m10 -X POST \"http://10.x.x.x:8092/records/$n?token=$TOK&session=$ST&delete=1\"; echo\ndone",
  "description": "Delete both bench recordings"
}

bench-1msps-burst -> {"deleted":true}
warmup-discard -> {"deleted":true}

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\necho \"=== catalog ===\"; curl -s -m5 \"http://10.x.x.x:8092/records?token=$TOK\" | python3 -m json.tool\necho \"=== card filesystem ===\"\nadb shell 'ls -la /storage/0291-1C0E/Android/data/com.powerbench.ai/files/records/ 2>&1' | head",
  "description": "Verify deletions on catalog and filesystem"
}

=== catalog ===
{
    "files": [],
    "activeName": null,
    "freeBytes": 31905677312
}
=== card filesystem ===
total 64
drwxrwx--x 2 u0_a75 sdcard_rw 32768 2026-09-01 19:41 .
drwxrwx--x 3 u0_a75 sdcard_rw 32768 2026-08-25 18:48 ..

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nST=[REDACTED-HEX]\ngrep -n \"release\\|/session/\" android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt | grep -iE \"release|revoke\" | head -5",
  "description": "Find the session release route"
}

154: *                          refused RUN (release build, or the singleton
282:     * drop counters. Refuses on a release build and while a real recording is
320:        // request needed is temporarily unavailable (release build, or the
325:                """{"error":"refused (release build, or a recording is active)"}""")

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\ncurl -s -m5 \"http://10.x.x.x:8092/session?token=$TOK\"; echo\necho \"=== how is a session dropped? ===\"\ngrep -nE \"held = false|clearSession|sessionToken = null|expire|timeout\" android/app/src/main/java/com/powerbench/ai/service/BenchApiServer.kt | head -8",
  "description": "Check session state and how sessions expire"
}

{"held":false,"pending":[]}
=== how is a session dropped? ===
171: *                          reclaimed before claim, or an unknown/expired id

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== rate -> fold factor N ===\"\ngrep -rnE \"foldFactor|boxesPerSec|N =|pairsPerBox|decim\" android/app/src/main/java/com/powerbench/ai/pipeline/RecordRate.kt 2>/dev/null | head -15\necho \"--- file list ---\"; ls android/app/src/main/java/com/powerbench/ai/pipeline/",
  "description": "Find fold factor per rate"
}

=== rate -> fold factor N ===
android/app/src/main/java/com/powerbench/ai/pipeline/RecordRate.kt:21:     * fold factor on [LADDER] an integer -- see [foldFactor]. Int, not
android/app/src/main/java/com/powerbench/ai/pipeline/RecordRate.kt:29:     * at foldFactor 1 it stores twice what the 1 Msps rate does for no more
android/app/src/main/java/com/powerbench/ai/pipeline/RecordRate.kt:48:    fun foldFactor(rateHz: Int): Int = HUB_PAIR_RATE / rateHz
--- file list ---
BlockCompressor.kt
BoxSink.kt
BoxWriter.kt
BoxcarDecimator.kt
Decimator.kt
EnvelopeRing.kt
FlashSpill.kt
PayloadFold.kt
PayloadRing.kt
Pipeline.kt
PlaybackFeed.kt
PseudoCapture.kt
RecordBlock.kt
RecordManifest.kt
RecordPump.kt
RecordRate.kt
RecordReader.kt
RecordSession.kt
RecordThreadPriority.kt
RecordWriter.kt
SampleRing.kt
SampleSource.kt
SidecarFormat.kt
SidecarReader.kt
SidecarWriter.kt
SyntheticSource.kt
TraceFeed.kt
TraceFold.kt
Units.kt
WireGeometry.kt

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== gap handling in PayloadFold ===\"\ngrep -nE \"gap|drop|overrun|b0|flags and 1|forceBoundary|short box|partial\" android/app/src/main/java/com/powerbench/ai/pipeline/PayloadFold.kt | head -20",
  "description": "Check how PayloadFold handles a gap"
}

=== gap handling in PayloadFold ===
64: * min/max over counts from two different rungs is meaningless. The short box
77: * hand-derived test vectors, Task 1). Given `b0..b5`:
80: * vc0 = b0 or ((b1 and 0x0f) shl 8)
117: * carry ([carry]/[carryLen]) so the two partial-fragment invariants (group:
186:     * the same way it surfaces [PayloadRing.droppedPairs] and
187:     * [BoxWriter.droppedBoxes] -- something the operator can see, not a
217:     * from [carry]/[carryLen] (which carries a partial PAIR). A header can
244:     * Stops the fold thread. The partial box it was still accumulating is
271:     *   `head = h+1` — one box overwritten and NO drop counted, which breaks
326:        // unread bytes that were never counted as a producer-side drop
327:        // either (PayloadRing.droppedBytes only counts writes the ring
334:        // The trailing partial box is flushed HERE, on the fold thread, as
363:     * drops a straddling pair biases the envelope it belonged to. In
399:                    // fresh at a full N -- a short box must not consume a
471:                val b0 = carry[0].toInt() and 0xff
479:                val vc0 = b0 or ((b1 and 0x0f) shl 8)
522:            val b0 = b[p].toInt() and 0xff
530:            val vc0 = b0 or ((b1 and 0x0f) shl 8)
570:        // silently dropped, which is what termination rests on: `consumed`

{
  "command": "cd ~/GitHub/LabInABox\nsed -n '385,410p' android/app/src/main/java/com/powerbench/ai/pipeline/PayloadFold.kt",
  "description": "Read the short-box / boundary logic"
}

// field; anything else means these 4 bytes were never a
                // header at all (most likely mid-payload from an earlier
                // missed header). Refuse the adoption and retry the NEXT 4
                // bytes as a header -- bodyPairsLeft is left at 0, so the
                // outer while in consume() loops straight back into the
                // header branch rather than folding garbage as a body.
                if (r > 7 || bp > maxBodyPairs) {
                    desyncFrames++
                    continue
                }
                if (r != frameRung || m != frameMarker) {
                    // Close the open box on the OLD state before adopting the
                    // new one: min/max over counts from two different rungs
                    // (or a mixed marker) is meaningless. The next box starts
                    // fresh at a full N -- a short box must not consume a
                    // "grid slot".
                    if (inBox != 0) {
                        sink.box(V_LUT[vMin], V_LUT[vMax], iMin, iMax, frameMarker, frameRung)
                        boxes++
                        vMin = Int.MAX_VALUE; vMax = Int.MIN_VALUE
                        iMin = Int.MAX_VALUE; iMax = Int.MIN_VALUE
                        inBox = 0
                    }
                    frameRung = r; frameMarker = m
                }
                bodyPairsLeft = bp

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/session/request\" -d \"name=rate-ladder\" | python3 -c \"import sys,json;print(json.load(sys.stdin)['pendingId'])\" > /tmp/pid.txt\nPID=$(cat /tmp/pid.txt); echo \"pending $PID\"\nsleep 1\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/session/claim?id=$PID\" | python3 -c \"import sys,json;print(json.load(sys.stdin)['sessionToken'])\"",
  "description": "Claim a new session for the rate-ladder bench"
}

Exit code 1
pending [REDACTED-HEX]
Traceback (most recent call last):
  File "<string>", line 1, in <module>
    import sys,json;print(json.load(sys.stdin)['sessionToken'])
                          ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
KeyError: 'sessionToken'

{
  "command": "cd ~/GitHub/LabInABox\nPID=$(cat /tmp/pid.txt)\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/session/claim?id=$PID\"; echo\nTOK=[REDACTED-HEX]\ncurl -s -m5 \"http://10.x.x.x:8092/session?token=$TOK\"; echo",
  "description": "Retry claim and inspect session state"
}

{"sessionToken":"[REDACTED-TOKEN]","benchToken":"[REDACTED-TOKEN]"}
{"held":true,"pending":[]}

{
  "command": "cd ~/GitHub/LabInABox\nSP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\ncat > $SP/ladder.sh <<'EOF'\n#!/bin/bash\nTOK=[REDACTED-HEX]\nST=[REDACTED-HEX]\nB=http://10.x.x.x:8092\nrun(){ # name rate dur out\n  curl -s -m5 -X POST \"$B/record?token=$TOK&session=$ST&start=$1&rate=$2&note=ladder\" >/dev/null\n  echo \"t,ovr,bytes,gaps,recBytes,dRing,dQueue\" > $4\n  END=$(( $(date +%s) + $3 ))\n  while [ $(date +%s) -lt $END ]; do\n    T=$(date +%s)\n    R=$(curl -s -m4 \"$B/status?token=$TOK\" | python3 -c \"\nimport sys,json;d=json.load(sys.stdin)\nprint('%d,%d,%d,%d,%d,%d'%(d['deviceOverruns'],d['totalBytes'],d['seqGaps'],\n d.get('recBytes',0),d.get('recDroppedRingPairs',0),d.get('recDroppedQueueBoxes',0)))\" 2>/dev/null)\n    [ -n \"$R\" ] && echo \"$T,$R\" >> $4\n    sleep 2\n  done\n  curl -s -m5 -X POST \"$B/record?token=$TOK&session=$ST&stop=1\" >/dev/null\n  sleep 3\n}\nrun warmup2 1000000 20 /dev/null\necho \"warmup done\"\nfor spec in \"r100k 100000\" \"r250k 250000\" \"r1m 1000000\"; do\n  set -- $spec\n  echo \"=== $1 @ $2 ===\"\n  run $1 $2 120 $SPOUT/$1.csv\ndone\necho LADDER_DONE\nEOF\nsed -i '' \"s|\\$SPOUT|$SP|g\" $SP/ladder.sh\nchmod +x $SP/ladder.sh\nbash $SP/ladder.sh",
  "description": "Run rate ladder 100k/250k/1M with counter sampling",
  "timeout": 600000,
  "run_in_background": true
}

Command running in background with ID: bhu8k168t. Output is being written to: /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/bhu8k168t.output. You will be notified when it completes. To check interim output, use Read on that file path.
Session cwd remains ~/GitHub/LabInABox; directory changes made by the backgrounded command do not apply to subsequent commands.

{
  "command": "SP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nuntil grep -q LADDER_DONE /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/bhu8k168t.output 2>/dev/null; do sleep 20; done\nls -l $SP/r*.csv",
  "description": "Wait for the rate ladder to complete",
  "timeout": 600000
}

-rw-r--r--@ 1 mpatidar  wheel  2364 Sep  1 19:48 /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/r100k.csv
-rw-r--r--@ 1 mpatidar  wheel  2465 Sep  1 19:52 /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/r1m.csv
-rw-r--r--@ 1 mpatidar  wheel  2428 Sep  1 19:50 /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/r250k.csv
-rw-r--r--@ 1 mpatidar  wheel  3642 Sep  1 19:38 /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/rec1m.csv

{
  "command": "python3 - <<'EOF'\nimport csv\nSP=\"/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad/\"\nfor name,rate in [(\"r100k\",100000),(\"r250k\",250000),(\"r1m\",1000000)]:\n    rows=[{k:int(v) for k,v in r.items()} for r in csv.DictReader(open(SP+name+\".csv\"))]\n    span=rows[-1]['t']-rows[0]['t']; tot=rows[-1]['ovr']-rows[0]['ovr']\n    N=2000000//rate\n    d=[]\n    for a,b in zip(rows,rows[1:]):\n        dt=b['t']-a['t']\n        if dt>0: d.append(b['ovr']-a['ovr'])\n    d.sort()\n    n=len(d)\n    z=sum(1 for x in d if x==0)\n    lost=tot*164\n    print(\"=== %s (%d Hz, foldN=%d) %ds, %d samples\"%(name,rate,N,span,len(rows)))\n    print(\"  overruns %d  mean %.3f/s   p50 %d p90 %d max %d per 2s\"%(tot,tot/span,d[n//2],d[int(n*.9)],d[-1]))\n    print(\"  zero intervals %d/%d (%.0f%%)\"%(z,n,100*z/n))\n    print(\"  gaps %d  dRing %d  dQueue %d\"%(rows[-1]['gaps']-rows[0]['gaps'],\n        rows[-1]['dRing']-rows[0]['dRing'], rows[-1]['dQueue']-rows[0]['dQueue']))\n    print(\"  LOST %d pairs = %.2f ms = %.5f%%  |  = %.1f BOXES (%.1f boxes per max-burst)\"%(\n        lost, lost/2000, 100*lost/(span*2e6), lost/N, d[-1]*164/N))\n    print()\nEOF",
  "description": "Analyze the rate ladder results"
}

=== r100k (100000 Hz, foldN=20) 118s, 55 samples
  overruns 5  mean 0.042/s   p50 0 p90 0 max 2 per 2s
  zero intervals 50/54 (93%)
  gaps 0  dRing 0  dQueue 0
  LOST 820 pairs = 0.41 ms = 0.00035%  |  = 41.0 BOXES (16.4 boxes per max-burst)

=== r250k (250000 Hz, foldN=8) 118s, 56 samples
  overruns 10  mean 0.085/s   p50 0 p90 1 max 2 per 2s
  zero intervals 46/55 (84%)
  gaps 0  dRing 0  dQueue 0
  LOST 1640 pairs = 0.82 ms = 0.00069%  |  = 205.0 BOXES (41.0 boxes per max-burst)

=== r1m (1000000 Hz, foldN=2) 118s, 56 samples
  overruns 5  mean 0.042/s   p50 0 p90 0 max 2 per 2s
  zero intervals 51/55 (93%)
  gaps 0  dRing 0  dQueue 0
  LOST 820 pairs = 0.41 ms = 0.00035%  |  = 410.0 BOXES (164.0 boxes per max-burst)

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nST=[REDACTED-HEX]\ncurl -s -m5 \"http://10.x.x.x:8092/records?token=$TOK\" | python3 -c \"import sys,json;[print(f['name']) for f in json.load(sys.stdin)['files']]\" > /tmp/recs.txt\ncat /tmp/recs.txt\nwhile read n; do [ -n \"$n\" ] && { echo -n \"$n -> \"; curl -s -m10 -X POST \"http://10.x.x.x:8092/records/$n?token=$TOK&session=$ST&delete=1\"; echo; }; done < /tmp/recs.txt\necho \"=== after ===\"; curl -s -m5 \"http://10.x.x.x:8092/records?token=$TOK\" | python3 -m json.tool",
  "description": "Delete ladder recordings and verify"
}

r1m
r250k
r100k
warmup2
r1m -> {"deleted":true}
r250k -> {"deleted":true}
r100k -> {"deleted":true}
warmup2 -> {"deleted":true}
=== after ===
{
    "files": [],
    "activeName": null,
    "freeBytes": 31905677312
}

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== esp-load controls ===\"\ngrep -rnE \"/mode|/burst|gets|server.on\" bench/esp-load/*.cpp 2>/dev/null | head -15\necho \"--- files ---\"; ls bench/esp-load/ 2>/dev/null",
  "description": "Read esp-load HTTP controls"
}

=== esp-load controls ===
(eval):3: no matches found: bench/esp-load/*.cpp
--- files ---
README.md
platformio.ini
src

{
  "command": "cd ~/GitHub/LabInABox\nls bench/esp-load/src/\necho \"=== endpoints ===\"\ngrep -rnE \"server\\.on|\\\"/[a-z]+\\\"\" bench/esp-load/src/ | head -15\necho \"=== hostname / mDNS ===\"\ngrep -rnE \"MDNS|hostname|WiFi.set\" bench/esp-load/src/ | head -5",
  "description": "Find esp-load endpoints and hostname"
}

main.cpp
noradio.cpp
=== endpoints ===
bench/esp-load/src/main.cpp:315:  gServer.on("/status", handleStatus);
bench/esp-load/src/main.cpp:316:  gServer.on("/reset", handleReset);
bench/esp-load/src/main.cpp:317:  gServer.on("/ota", handleOtaWindow);
bench/esp-load/src/main.cpp:318:  gServer.on("/mode", handleMode);
bench/esp-load/src/main.cpp:319:  gServer.on("/burst", handleBurst);
=== hostname / mDNS ===
bench/esp-load/src/main.cpp:36:// mDNS/OTA hostname: reachable as c3profiler.local while the radio is up.
bench/esp-load/src/main.cpp:103:  WiFi.setSleep(WIFI_PS_MIN_MODEM);
bench/esp-load/src/main.cpp:307:  if (MDNS.begin(DEVICE_HOSTNAME)) {
bench/esp-load/src/main.cpp:308:    MDNS.addService("http", "tcp", 80);

{
  "command": "cd ~/GitHub/LabInABox\necho \"=== modes available ===\"\ngrep -n \"handleMode\" -A 25 bench/esp-load/src/main.cpp | grep -iE \"mode|set|==|strcmp\" | head -20",
  "description": "Read available load modes"
}

=== modes available ===
277:static void handleMode() {
278-  String v = gServer.arg("set");
279-  if (v == "quiet") gMode = MODE_QUIET;
280-  else if (v == "burst") gMode = MODE_BURST;
281-  else if (v == "free") gMode = MODE_FREE;
283-    gServer.send(400, "text/plain", "set=free|quiet|burst\n");
286-  // The mode takes effect at the top of the next loop() pass. A burst or idle
288-  // mode to be LIVE should poll /status until it reports back.
290-               String("{\"mode\":\"") + modeName(gMode) + "\"}\n");
294-// mode. Lets a test aim load at a specific moment (e.g. 3 s into a recording)
298-  if (ms == 0) ms = 5000;
318:  gServer.on("/mode", handleMode);
322-                 "(/status, /reset, /mode?set=, /burst?ms=)");
324-  ArduinoOTA.setHostname(DEVICE_HOSTNAME);
334-void setup() {
341-  Serial.setTxTimeoutMs(20);

{
  "command": "curl -s -m 4 \"http://c3profiler.local/status\" 2>&1 | head -5 || echo \"mDNS fail\"\necho \"---\"\nping -c 1 -W 2 c3profiler.local 2>&1 | head -2",
  "description": "Check if esp-load is reachable"
}

---
ping: cannot resolve c3profiler.local: Unknown host

{
  "command": "cd ~/GitHub/LabInABox\ngrep -n \"LADDER\" -A 12 android/app/src/main/java/com/powerbench/ai/pipeline/RecordRate.kt | head -20\necho \"=== deflate level table ===\"\ngrep -n \"deflateLevel\" -A 12 android/app/src/main/java/com/powerbench/ai/pipeline/RecordRate.kt | head -20",
  "description": "Read rate ladder and deflate level table"
}

21:     * fold factor on [LADDER] an integer -- see [foldFactor]. Int, not
22-     * Double: the whole point is that this divides exactly, and a Double
23-     * would invite fractional arithmetic straight back in.
24-     */
25-    const val HUB_PAIR_RATE = 2_000_000
26-
27-    /**
28-     * The hub's native pair rate (2,000,000) is deliberately NOT offered here:
29-     * at foldFactor 1 it stores twice what the 1 Msps rate does for no more
30-     * resolution than 1 Msps already gives (both are folded from the same
31-     * per-packet envelopes), and it is the only rate on the old ladder whose
32-     * compressor load exceeded L3 (spec 2a sweep).
33-     */
34:    val LADDER = intArrayOf(1_000, 10_000, 100_000, 250_000, 1_000_000)
35-
36-    /**
37-     * Captured pairs per stored box. Always an EXACT integer for every rate on
38:     * [LADDER]: 1 Msps -> 2, 250 ksps -> 8, 100 ksps -> 20, 10 ksps -> 200,
39-     * 1 ksps -> 2000.
40-     *
=== deflate level table ===
146:    fun deflateLevel(rateHz: Int): Int = when {
147-        rateHz < 250_000 -> 6
148-        rateHz < 1_000_000 -> 3
149-        else -> 1
150-    }
151-
152-    fun isSupported(rateHz: Int): Boolean = LADDER.contains(rateHz)
153-
154-    fun label(rateHz: Int): String = when {
155-        rateHz >= 1_000_000 && rateHz % 1_000_000 == 0 -> "${rateHz / 1_000_000} MSPS"
156-        rateHz >= 1_000_000 -> "${rateHz / 1_000_000.0} MSPS"
157-        else -> "${rateHz / 1_000} KSPS"
158-    }

{
  "command": "cd ~/GitHub/LabInABox\nSP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\ncat > $SP/noisy.sh <<'SH'\n#!/bin/bash\n# Noisy-load rate ladder. Samples hub + record loss counters every 2 s.\n# ESP load must already be in continuous burst mode.\nTOK=[REDACTED-HEX]\nST=__ST__\nB=http://10.x.x.x:8092\nSP=__SP__\nrun(){ # name rate dur\n  curl -s -m5 -X POST \"$B/record?token=$TOK&session=$ST&start=$1&rate=$2&note=noisy-$1\" >/dev/null\n  echo \"t,ovr,bytes,gaps,recBytes,dRing,dQueue,dEntries,rung\" > $SP/$1.csv\n  END=$(( $(date +%s) + $3 ))\n  while [ $(date +%s) -lt $END ]; do\n    T=$(date +%s)\n    R=$(curl -s -m4 \"$B/status?token=$TOK\" | python3 -c \"\nimport sys,json;d=json.load(sys.stdin)\nprint('%d,%d,%d,%d,%d,%d,%d,%d'%(d['deviceOverruns'],d['totalBytes'],d['seqGaps'],\n d.get('recBytes',0),d.get('recDroppedRingPairs',0),d.get('recDroppedQueueBoxes',0),\n d.get('recDroppedEntries',0),d.get('rung',-1)))\" 2>/dev/null)\n    [ -n \"$R\" ] && echo \"$T,$R\" >> $SP/$1.csv\n    sleep 2\n  done\n  curl -s -m5 -X POST \"$B/record?token=$TOK&session=$ST&stop=1\" >/dev/null\n  sleep 3\n}\nrun nwarm 1000000 20; echo \"warmup discarded\"\nfor s in \"n1m 1000000\" \"n100k 100000\" \"n10k 10000\" \"n250k 250000\"; do\n  set -- $s; echo \"=== $1 @ $2 ===\"; run $1 $2 120\ndone\necho NOISY_DONE\nSH\nsed -i '' \"s|__SP__|$SP|g\" $SP/noisy.sh\nchmod +x $SP/noisy.sh\necho \"script ready\"\necho \"=== ESP up yet? ===\"\ncurl -s -m3 \"http://c3profiler.local/status\" 2>&1 | head -3 || echo \"not yet\"",
  "description": "Prepare noisy-load bench script and probe ESP"
}

script ready
=== ESP up yet? ===

{
  "command": "curl -s -m 4 \"http://c3profiler.local/status\" 2>&1 | head -10; echo \"rc=$?\"",
  "description": "Check esp-load status"
}

rc=0

{
  "command": "ping -c 2 -W 2 c3profiler.local 2>&1 | head -4\necho \"=== arp scan for esp ===\"\nfor ip in $(seq 40 60); do (ping -c1 -W1 10.10.10.$ip >/dev/null 2>&1 && echo \"10.10.10.$ip up\") & done; wait",
  "description": "Resolve esp-load host and scan subnet"
}

PING c3profiler.local (10.x.x.x): 56 data bytes
Request timeout for icmp_seq 0

--- c3profiler.local ping statistics ---
=== arp scan for esp ===
10.x.x.x up

{
  "command": "curl -s -m 5 \"http://10.x.x.x/status\" 2>&1 | head -10; echo \"rc=$?\"\necho \"=== port 80 open? ===\"; nc -z -w 3 10.x.x.x 80 && echo OPEN || echo CLOSED",
  "description": "Probe esp-load by IP"
}

{"boots":1,"wakes":0,"cycles":48,"lastWakeCause":0,"uptimeMs":164640,"lastReconnectMs":0,"heap":204768,"rssi":-82,"ip":"10.x.x.x","synced":true,"lightSleep":1,"mode":"burst","gets":113}
rc=0
=== port 80 open? ===
Connection to 10.x.x.x port 80 [tcp/http] succeeded!
OPEN

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\nPID=$(curl -s -m5 -X POST \"http://10.x.x.x:8092/session/request\" -d \"name=noisy-bench\" | python3 -c \"import sys,json;print(json.load(sys.stdin)['pendingId'])\")\nsleep 1\nST=$(curl -s -m5 -X POST \"http://10.x.x.x:8092/session/claim?id=$PID\" | python3 -c \"import sys,json;print(json.load(sys.stdin)['sessionToken'])\")\necho \"session=$ST\"; echo $ST > /tmp/st.txt\necho \"=== rung swing check, 12 s ===\"\nfor i in $(seq 1 6); do\n  curl -s -m4 \"http://10.x.x.x:8092/status?token=$TOK\" | python3 -c \"\nimport sys,json;d=json.load(sys.stdin)\nprint('rung',d['rung'],'iRung',d['iRung'],'ovr',d['deviceOverruns'])\"\n  sleep 2\ndone",
  "description": "Claim session and verify the load swings rungs",
  "timeout": 60000
}

Traceback (most recent call last):
  File "<string>", line 1, in <module>
    import sys,json;print(json.load(sys.stdin)['sessionToken'])
                          ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
KeyError: 'sessionToken'
session=
=== rung swing check, 12 s ===
rung 2 iRung 2 ovr 1451
rung 2 iRung 2 ovr 1451
rung 1 iRung 1 ovr 1451
rung 1 iRung 1 ovr 1451
rung 1 iRung 1 ovr 1451
rung 1 iRung 1 ovr 1451

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\ncurl -s -m5 \"http://10.x.x.x:8092/session?token=$TOK\"; echo\nPID=$(curl -s -m5 -X POST \"http://10.x.x.x:8092/session/request\" -d \"name=noisy-bench\" | python3 -c \"import sys,json;print(json.load(sys.stdin)['pendingId'])\")\necho \"pending=$PID\"; sleep 2\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/session/claim?id=$PID\"; echo",
  "description": "Re-request and claim session"
}

{"held":false,"pending":[{"id":"[REDACTED-HEX]","addr":"10.x.x.x"}]}
pending=[REDACTED-HEX]
{"pending":true}

{
  "command": "cd ~/GitHub/LabInABox\nsleep 2\ncurl -s -m5 -X POST \"http://10.x.x.x:8092/session/claim?id=[REDACTED-HEX]\"; echo\nTOK=[REDACTED-HEX]\ncurl -s -m5 \"http://10.x.x.x:8092/session?token=$TOK\"; echo",
  "description": "Claim the newest pending session"
}

{"sessionToken":"[REDACTED-TOKEN]","benchToken":"[REDACTED-TOKEN]"}
{"held":true,"pending":[]}

{
  "command": "cd ~/GitHub/LabInABox\nSP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nsed -i '' \"s|__ST__|[REDACTED-HEX]|g\" $SP/noisy.sh\ngrep -n \"^ST=\" $SP/noisy.sh\nbash $SP/noisy.sh",
  "description": "Run the noisy-load rate ladder",
  "timeout": 900000,
  "run_in_background": true
}

Command running in background with ID: b758x3qgs. Output is being written to: /private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/tasks/b758x3qgs.output. You will be notified when it completes. To check interim output, use Read on that file path.
Session cwd remains ~/GitHub/LabInABox; directory changes made by the backgrounded command do not apply to subsequent commands.

{
  "command": "cd ~/GitHub/LabInABox\nSP=/private/tmp/claude-501/-Users-mpatidar-GitHub-LabInABox/1e7f3285-3feb-475d-8d6c-03448ffd85d8/scratchpad\nuntil [ -f $SP/n1m.csv ] && [ $(wc -l < $SP/n1m.csv) -ge 20 ]; do sleep 10; done\necho \"=== n1m first rows ===\"; head -3 $SP/n1m.csv; tail -3 $SP/n1m.csv\necho \"=== rung distribution so far ===\"; tail -n +2 $SP/n1m.csv | cut -d, -f9 | sort | uniq -c\necho \"=== esp still bursting ===\"; curl -s -m4 http://10.x.x.x/status | python3 -c \"import sys,json;d=json.load(sys.stdin);print('mode',d['mode'],'gets',d['gets'],'rssi',d['rssi'])\"",
  "description": "Verify noisy run exercising rungs and ESP alive",
  "timeout": 240000
}

=== n1m first rows ===
t,ovr,bytes,gaps,recBytes,dRing,dQueue,dEntries,rung
1788273146,1451,18330599424,0,0,0,0,0,2
1788273148,1452,18344738816,0,0,0,0,0,1
1788273185,1454,18572378112,0,0,0,0,0,1
1788273187,1454,18586533888,0,0,0,0,0,2
1788273189,1454,18599116800,0,0,0,0,0,1
=== rung distribution so far ===
  13 1
   8 2
=== esp still bursting ===
mode burst gets 223 rssi -73

{
  "command": "cd ~/GitHub/LabInABox\nTOK=[REDACTED-HEX]\ncurl -s -m5 \"http://10.x.x.x:8092/status?token=$TOK\" | python3 -c \"\nimport sys,json;d=json.load(sys.stdin)\nprint('recording',d.get('recording'),'recBytes',d.get('recBytes'),'recRateHz',d.get('recRateHz'),'rung',d['rung'])\"\ncurl -s -m5 \"http://10.x.x.x:8092/records?token=$TOK\" | python3 -c \"\nimport sys,json;d=json.load(sys.stdin);print('active:',d['activeName']);[print(' ',f['name'],f['sizeBytes'],f['complete']) for f in d['files']]\"",
  "description": "Confirm recording is actually writing bytes"
}