[js8.sh job] utc=2026-05-26T11:48:34Z
[js8.sh job] build=step32-anchored-candidate-fast-export-guard
[js8.sh job] root=/decoders/js8_decoder
[js8.sh job] command=./run_js8_decoder_lab.sh server-deep-run /decoders/js8_test.wav
[js8.sh job] rx-only: no TX / no PTT / no Tune / no Send
[webftr-js8-lab] command=server-deep-run
[webftr-js8-lab] root=/decoders/js8_decoder
[webftr-js8-lab] log=/decoders/js8_decoder/logs/20260526T114834Z_server-deep-run.log
[webftr-js8-lab] manifest=/decoders/js8_decoder/logs/20260526T114834Z_server-deep-run_manifest.json
[webftr-js8-lab] utc=20260526T114834Z
[webftr-js8-lab] rx-only guard: no TX / no PTT / no Tune / no Send

[webftr-js8-lab] server DEEP runner
[webftr-js8-lab] requested path: /decoders/js8_test.wav
[webftr-js8-lab] This does not touch WebFTR productive code; it only reads a WAV and writes JS8Lab logs.
[webftr-js8-lab] Deep path: real-run = input-check + dirty-window-scan + profile-scan + frame-recover + auto-ldpc-probe + candidate-export + LDPC probes + bundle.
[webftr-js8-lab] resolved WAV: /decoders/js8_test.wav

[webftr-js8-lab] command=real-run
[webftr-js8-lab] root=/decoders/js8_decoder
[webftr-js8-lab] log=/decoders/js8_decoder/logs/20260526T114834Z_real-run.log
[webftr-js8-lab] manifest=/decoders/js8_decoder/logs/20260526T114834Z_real-run_manifest.json
[webftr-js8-lab] utc=20260526T114834Z
[webftr-js8-lab] rx-only guard: no TX / no PTT / no Tune / no Send

[webftr-js8-lab] real-run for WAV: /decoders/js8_test.wav
[webftr-js8-lab] This runs input-check, dirty-window-scan, profile-scan, frame-recover, auto-ldpc-probe, candidate-export, ldpc-matrix-probe, ldpc-soft-decode and creates a JS8Lab upload bundle.
[webftr-js8-lab] Please upload the printed js8_decoder_lab_real_run_*.zip bundle.

========== REAL-RUN STEP 1/9: INPUT CHECK ==========
[webftr-js8-lab] command=input-check
[webftr-js8-lab] root=/decoders/js8_decoder
[webftr-js8-lab] log=/decoders/js8_decoder/logs/20260526T114835Z_input-check.log
[webftr-js8-lab] manifest=/decoders/js8_decoder/logs/20260526T114835Z_input-check_manifest.json
[webftr-js8-lab] utc=20260526T114835Z
[webftr-js8-lab] rx-only guard: no TX / no PTT / no Tune / no Send

[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T114835Z_input_check_output.json
[webftr-js8-lab] JSON timeout guard: 180s
{
  "ok": true,
  "mode": "JS8",
  "tool": "webftr-js8-input-check",
  "tool_version": "step32-anchored-candidate-fast-export-guard",
  "input_wav": "/decoders/js8_test.wav",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "decodes": [],
  "warnings": [],
  "wav": {
    "path": "/decoders/js8_test.wav",
    "channels": 1,
    "sample_rate": 12000,
    "sample_width_bytes": 2,
    "frames": 2304199,
    "duration_seconds": 192.016583,
    "rms_dbfs": -9.14,
    "peak_dbfs": -0.72,
    "clipped": false
  },
  "next_action": "Run profile-scan, then auto-ldpc-probe on this WAV."
}

[webftr-js8-lab] OK
[webftr-js8-lab] log file: /decoders/js8_decoder/logs/20260526T114835Z_input-check.log
[webftr-js8-lab] manifest: /decoders/js8_decoder/logs/20260526T114835Z_input-check_manifest.json
[webftr-js8-lab] input-check exit_code=0

========== REAL-RUN STEP 2/9A: QUICK WINDOW PREFILTER ==========
[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T114834Z_real_run_quick_prefilter_output.json
[webftr-js8-lab] JSON timeout guard: 60s
[webftr-js8-lab] stderr log: /decoders/js8_decoder/logs/20260526T114834Z_real_run_quick_prefilter_output.stderr.log
/decoders/js8_decoder/src/webftr_js8_lab/js8_quick_window_scan.py:4: DeprecationWarning: 'audioop' is deprecated and slated for removal in Python 3.13
  import audioop
{
  "ok": true,
  "mode": "JS8",
  "tool": "webftr-js8-quick-window-scan",
  "tool_version": "step32-anchored-candidate-fast-export-guard",
  "input_wav": "/decoders/js8_test.wav",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "wav": {
    "sample_rate": 12000,
    "duration_seconds": 192.016583,
    "frames": 2304199,
    "rms_dbfs": -9.164808449038551,
    "peak_dbfs": -0.7246929351669301,
    "clipped": false
  },
  "scan_params": {
    "window_seconds": 60.0,
    "hop_seconds": 12.0,
    "max_seconds": 180.0,
    "output_dir": "/decoders/js8_decoder/runtime/quick_prefilter_windows"
  },
  "selected_window": {
    "start_seconds": 24.0,
    "end_seconds": 84.0,
    "duration_seconds": 60.0,
    "avg_activity_score": -6.2272,
    "active_chunks": 5,
    "chunk_count": 5,
    "selection_score": 11.2728,
    "window_wav": "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
    "tone_candidates": [
      {
        "freq_hz": 1025.0,
        "relative_db": 0.0,
        "power": 7.98385996
      },
      {
        "freq_hz": 1000.0,
        "relative_db": -0.38,
        "power": 7.31762699
      },
      {
        "freq_hz": 2025.0,
        "relative_db": -9.29,
        "power": 0.93974646
      },
      {
        "freq_hz": 975.0,
        "relative_db": -13.3,
        "power": 0.37314359
      },
      {
        "freq_hz": 1050.0,
        "relative_db": -25.6,
        "power": 0.02199227
      },
      {
        "freq_hz": 1775.0,
        "relative_db": -27.4,
        "power": 0.01453049
      },
      {
        "freq_hz": 1150.0,
        "relative_db": -27.44,
        "power": 0.01439727
      },
      {
        "freq_hz": 1425.0,
        "relative_db": -28.11,
        "power": 0.01233556
      },
      {
        "freq_hz": 1250.0,
        "relative_db": -29.08,
        "power": 0.00987629
      },
      {
        "freq_hz": 1825.0,
        "relative_db": -29.2,
        "power": 0.00959995
      },
      {
        "freq_hz": 1950.0,
        "relative_db": -29.78,
        "power": 0.00840634
      },
      {
        "freq_hz": 950.0,
        "relative_db": -29.91,
        "power": 0.00814511
      }
    ]
  },
  "selected_window_wav": "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
  "top_windows": [
    {
      "start_seconds": 24.0,
      "end_seconds": 84.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2272,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2728,
      "window_wav": "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
      "tone_candidates": [
        {
          "freq_hz": 1025.0,
          "relative_db": 0.0,
          "power": 7.98385996
        },
        {
          "freq_hz": 1000.0,
          "relative_db": -0.38,
          "power": 7.31762699
        },
        {
          "freq_hz": 2025.0,
          "relative_db": -9.29,
          "power": 0.93974646
        },
        {
          "freq_hz": 975.0,
          "relative_db": -13.3,
          "power": 0.37314359
        },
        {
          "freq_hz": 1050.0,
          "relative_db": -25.6,
          "power": 0.02199227
        },
        {
          "freq_hz": 1775.0,
          "relative_db": -27.4,
          "power": 0.01453049
        },
        {
          "freq_hz": 1150.0,
          "relative_db": -27.44,
          "power": 0.01439727
        },
        {
          "freq_hz": 1425.0,
          "relative_db": -28.11,
          "power": 0.01233556
        },
        {
          "freq_hz": 1250.0,
          "relative_db": -29.08,
          "power": 0.00987629
        },
        {
          "freq_hz": 1825.0,
          "relative_db": -29.2,
          "power": 0.00959995
        },
        {
          "freq_hz": 1950.0,
          "relative_db": -29.78,
          "power": 0.00840634
        },
        {
          "freq_hz": 950.0,
          "relative_db": -29.91,
          "power": 0.00814511
        }
      ]
    },
    {
      "start_seconds": 12.0,
      "end_seconds": 72.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2278,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2722
    },
    {
      "start_seconds": 36.0,
      "end_seconds": 96.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2346,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2654
    },
    {
      "start_seconds": 48.0,
      "end_seconds": 108.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2483,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2517
    },
    {
      "start_seconds": 0.0,
      "end_seconds": 60.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2606,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2394
    },
    {
      "start_seconds": 60.0,
      "end_seconds": 120.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2619,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2381
    },
    {
      "start_seconds": 108.0,
      "end_seconds": 168.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2716,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2284
    },
    {
      "start_seconds": 72.0,
      "end_seconds": 132.0,
      "duration_seconds": 60.0,
      "avg_activity_score": -6.2752,
      "active_chunks": 5,
      "chunk_count": 5,
      "selection_score": 11.2248
    }
  ],
  "chunk_preview": [
    {
      "chunk_index": 0,
      "start_seconds": 0.0,
      "end_seconds": 12.0,
      "rms_dbfs": -9.07,
      "peak_dbfs": -3.22,
      "activity_score": -6.2351
    },
    {
      "chunk_index": 1,
      "start_seconds": 12.0,
      "end_seconds": 24.0,
      "rms_dbfs": -9.27,
      "peak_dbfs": -3.01,
      "activity_score": -6.4225
    },
    {
      "chunk_index": 2,
      "start_seconds": 24.0,
      "end_seconds": 36.0,
      "rms_dbfs": -9.24,
      "peak_dbfs": -2.73,
      "activity_score": -6.3769
    },
    {
      "chunk_index": 3,
      "start_seconds": 36.0,
      "end_seconds": 48.0,
      "rms_dbfs": -9.24,
      "peak_dbfs": -2.39,
      "activity_score": -6.3632
    },
    {
      "chunk_index": 4,
      "start_seconds": 48.0,
      "end_seconds": 60.0,
      "rms_dbfs": -8.87,
      "peak_dbfs": -0.72,
      "activity_score": -5.9054
    },
    {
      "chunk_index": 5,
      "start_seconds": 60.0,
      "end_seconds": 72.0,
      "rms_dbfs": -9.03,
      "peak_dbfs": -0.72,
      "activity_score": -6.0711
    },
    {
      "chunk_index": 6,
      "start_seconds": 72.0,
      "end_seconds": 84.0,
      "rms_dbfs": -9.26,
      "peak_dbfs": -3.1,
      "activity_score": -6.4194
    },
    {
      "chunk_index": 7,
      "start_seconds": 84.0,
      "end_seconds": 96.0,
      "rms_dbfs": -9.29,
      "peak_dbfs": -2.42,
      "activity_score": -6.4141
    }
  ],
  "chunk_tail_preview": [
    {
      "chunk_index": 7,
      "start_seconds": 84.0,
      "end_seconds": 96.0,
      "rms_dbfs": -9.29,
      "peak_dbfs": -2.42,
      "activity_score": -6.4141
    },
    {
      "chunk_index": 8,
      "start_seconds": 96.0,
      "end_seconds": 108.0,
      "rms_dbfs": -9.3,
      "peak_dbfs": -2.65,
      "activity_score": -6.4314
    },
    {
      "chunk_index": 9,
      "start_seconds": 108.0,
      "end_seconds": 120.0,
      "rms_dbfs": -8.87,
      "peak_dbfs": -2.1,
      "activity_score": -5.9734
    },
    {
      "chunk_index": 10,
      "start_seconds": 120.0,
      "end_seconds": 132.0,
      "rms_dbfs": -9.02,
      "peak_dbfs": -2.36,
      "activity_score": -6.1378
    },
    {
      "chunk_index": 11,
      "start_seconds": 132.0,
      "end_seconds": 144.0,
      "rms_dbfs": -9.41,
      "peak_dbfs": -0.72,
      "activity_score": -6.4474
    },
    {
      "chunk_index": 12,
      "start_seconds": 144.0,
      "end_seconds": 156.0,
      "rms_dbfs": -9.3,
      "peak_dbfs": -2.31,
      "activity_score": -6.4185
    },
    {
      "chunk_index": 13,
      "start_seconds": 156.0,
      "end_seconds": 168.0,
      "rms_dbfs": -9.34,
      "peak_dbfs": -0.89,
      "activity_score": -6.3807
    },
    {
      "chunk_index": 14,
      "start_seconds": 168.0,
      "end_seconds": 180.0,
      "rms_dbfs": -8.99,
      "peak_dbfs": -3.03,
      "activity_score": -6.1457
    }
  ],
  "decodes": [],
  "warnings": [
    "Quick-window-scan only selects a likely analysis window; it is not a JS8 text decoder."
  ],
  "next_action": "Run sync/soft-symbol/FEC probes on selected_window_wav. Message unpack is not implemented in Step 32."
}
[webftr-js8-lab] quick-prefilter exit_code=0
[webftr-js8-lab] dirty-scan input WAV: /decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav

========== REAL-RUN STEP 2/9B: BOUNDED DIRTY WINDOW SCAN ==========
[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T114834Z_real_run_dirty_window_scan_output.json
[webftr-js8-lab] JSON timeout guard: 60s
[webftr-js8-lab] stderr log: /decoders/js8_decoder/logs/20260526T114834Z_real_run_dirty_window_scan_output.stderr.log
/decoders/js8_decoder/src/webftr_js8_lab/js8_dirty_window_scan.py:4: DeprecationWarning: 'audioop' is deprecated and slated for removal in Python 3.13
  import audioop
{
  "ok": false,
  "error": "json_command_timeout_guard",
  "timeout_seconds": 60,
  "exit_code": 143,
  "command": [
    "python3",
    "-m",
    "webftr_js8_lab.js8_dirty_window_scan",
    "--input",
    "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
    "--pretty",
    "--window-seconds",
    "54",
    "--hop-seconds",
    "30",
    "--max-seconds",
    "75",
    "--max-windows",
    "1",
    "--max-starts",
    "3",
    "--max-base-candidates",
    "2",
    "--output-dir",
    "/decoders/js8_decoder/runtime/dirty_windows",
    "--prefer-js8"
  ],
  "stderr_log": "/decoders/js8_decoder/logs/20260526T114834Z_real_run_dirty_window_scan_output.stderr.log",
  "stderr_tail": "/decoders/js8_decoder/src/webftr_js8_lab/js8_dirty_window_scan.py:4: DeprecationWarning: 'audioop' is deprecated and slated for removal in Python 3.13\n  import audioop\n",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "next_action": "Step 32 timeout guard stopped this expensive probe. The real-run now continues with quick-window fallback when available; otherwise inspect stderr/log bundle."
}
[webftr-js8-lab] dirty-window-scan exit_code=143
[webftr-js8-lab] dirty scan failed/timed out, continuing with quick-window fallback: /decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav
[webftr-js8-lab] Step 32: dirty scan is non-fatal when quick-window fallback exists.
[webftr-js8-lab] analysis WAV for next steps: /decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav

========== REAL-RUN STEP 3/9: PROFILE SCAN ==========
[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T114834Z_real_run_profile_scan_output.json
[webftr-js8-lab] JSON timeout guard: 120s
{
  "ok": false,
  "error": "json_command_timeout_guard",
  "timeout_seconds": 120,
  "exit_code": 143,
  "command": [
    "python3",
    "-m",
    "webftr_js8_lab.js8_profile_scan",
    "--input",
    "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
    "--pretty",
    "--max-seconds",
    "60",
    "--max-starts",
    "12",
    "--max-base-candidates",
    "8"
  ],
  "stderr_log": "/decoders/js8_decoder/logs/20260526T114834Z_real_run_profile_scan_output.stderr.log",
  "stderr_tail": "",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "next_action": "Step 32 timeout guard stopped this expensive probe. The real-run now continues with quick-window fallback when available; otherwise inspect stderr/log bundle."
}
[webftr-js8-lab] profile-scan exit_code=143
[webftr-js8-lab] profile-scan JSON: /decoders/js8_decoder/logs/20260526T114834Z_real_run_profile_scan_output.json

========== REAL-RUN STEP 4/9: FRAME RECOVER ==========
[webftr-js8-lab] command=frame-recover
[webftr-js8-lab] root=/decoders/js8_decoder
[webftr-js8-lab] log=/decoders/js8_decoder/logs/20260526T115158Z_frame-recover.log
[webftr-js8-lab] manifest=/decoders/js8_decoder/logs/20260526T115158Z_frame-recover_manifest.json
[webftr-js8-lab] utc=20260526T115158Z
[webftr-js8-lab] rx-only guard: no TX / no PTT / no Tune / no Send

[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T115158Z_frame_recover_output.json
[webftr-js8-lab] JSON timeout guard: 180s
{
  "ok": false,
  "error": "json_command_timeout_guard",
  "timeout_seconds": 180,
  "exit_code": 143,
  "command": [
    "python3",
    "-m",
    "webftr_js8_lab.js8_frame_recover",
    "--input",
    "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
    "--pretty",
    "--max-seconds",
    "60",
    "--max-starts",
    "14",
    "--max-base-candidates",
    "8"
  ],
  "stderr_log": "/decoders/js8_decoder/logs/20260526T115158Z_frame_recover_output.stderr.log",
  "stderr_tail": "",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "next_action": "Step 32 timeout guard stopped this expensive probe. The real-run now continues with quick-window fallback when available; otherwise inspect stderr/log bundle."
}

[webftr-js8-lab] FAILED exit_code=143
[webftr-js8-lab] log file: /decoders/js8_decoder/logs/20260526T115158Z_frame-recover.log
[webftr-js8-lab] manifest: /decoders/js8_decoder/logs/20260526T115158Z_frame-recover_manifest.json
[webftr-js8-lab] frame-recover exit_code=143
[webftr-js8-lab] Step 32: frame-recover is a heavy diagnostic only; continuing with profile-anchor path.

========== REAL-RUN STEP 5/9: AUTO LDPC PROBE ==========
[webftr-js8-lab] command=auto-ldpc-probe
[webftr-js8-lab] root=/decoders/js8_decoder
[webftr-js8-lab] log=/decoders/js8_decoder/logs/20260526T115459Z_auto-ldpc-probe.log
[webftr-js8-lab] manifest=/decoders/js8_decoder/logs/20260526T115459Z_auto-ldpc-probe_manifest.json
[webftr-js8-lab] utc=20260526T115459Z
[webftr-js8-lab] rx-only guard: no TX / no PTT / no Tune / no Send

[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T115459Z_auto_ldpc_probe_output.json
[webftr-js8-lab] JSON timeout guard: 180s
{
  "ok": true,
  "mode": "JS8",
  "tool": "webftr-js8-auto-ldpc-probe",
  "tool_version": "step32-anchored-candidate-fast-export-guard",
  "input_wav": "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "implementation_stage": "step32_auto_profile_to_ldpc_probe_no_message_unpack",
  "selected_profile": {
    "profile": "js8_near_6400",
    "nsps": 6400,
    "rank_score": 225.085,
    "complete_ldpc_input_candidate_estimate": true,
    "soft_bit_count_estimate": 174,
    "missing_soft_bits_estimate": 0
  },
  "profile_scan": {
    "ok": true,
    "mode": "JS8",
    "tool": "webftr-js8-profile-scan",
    "tool_version": "step32-anchored-candidate-fast-export-guard",
    "input_wav": "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
    "rx_only": true,
    "safety": {
      "tx": false,
      "ptt": false,
      "tune": false,
      "send": false,
      "js8call_runtime_control": false
    },
    "implementation_stage": "step32_fast_profile_scan_guard_no_message_unpack",
    "wav": {
      "sample_rate": 12000,
      "duration_seconds": 60.0,
      "frames": 720000
    },
    "profile_count": 4,
    "scan_limits": {
      "max_seconds": 60.0,
      "max_starts": 12,
      "max_base_candidates": 8,
      "deep": false
    },
    "profiles": [
      {
        "profile": "js8_near_6400",
        "nsps": 6400,
        "symbol_duration_seconds": 0.533333,
        "tone_spacing_hz": 1.875,
        "note": "0.533 s timing guard candidate",
        "ok": true,
        "sync": {
          "start_seconds": 4.8,
          "base_freq_hz": 1025.0,
          "candidate_score": 47.4,
          "costas_hits": 2,
          "avg_margin_db": 8.01,
          "candidate_count": 12
        },
        "frame": {
          "symbols_available_after_start": 103,
          "data_symbol_count_estimate": 58,
          "expected_data_symbols_candidate": 58
        },
        "fec": {
          "soft_bit_count_estimate": 174,
          "missing_soft_bits_estimate": 0,
          "complete_ldpc_input_candidate_estimate": true
        },
        "rank_score": 225.085
      },
      {
        "profile": "js8_normal_6192",
        "nsps": 6192,
        "symbol_duration_seconds": 0.516,
        "tone_spacing_hz": 1.937984,
        "note": "0.516 s symbols, 1.938 Hz spacing candidate used in earlier lab steps",
        "ok": true,
        "sync": {
          "start_seconds": 38.184,
          "base_freq_hz": 1012.5,
          "candidate_score": 44.78,
          "costas_hits": 3,
          "avg_margin_db": 4.05,
          "candidate_count": 12
        },
        "frame": {
          "symbols_available_after_start": 42,
          "data_symbol_count_estimate": 35,
          "expected_data_symbols_candidate": 58
        },
        "fec": {
          "soft_bit_count_estimate": 105,
          "missing_soft_bits_estimate": 69,
          "complete_ldpc_input_candidate_estimate": false
        },
        "rank_score": 131.617793
      },
      {
        "profile": "mid_3840",
        "nsps": 3840,
        "symbol_duration_seconds": 0.32,
        "tone_spacing_hz": 3.125,
        "note": "0.320 s symbols, 3.125 Hz spacing candidate",
        "ok": true,
        "sync": {
          "start_seconds": 48.8,
          "base_freq_hz": 1015.0,
          "candidate_score": 47.2,
          "costas_hits": 3,
          "avg_margin_db": 3.8,
          "candidate_count": 12
        },
        "frame": {
          "symbols_available_after_start": 35,
          "data_symbol_count_estimate": 28,
          "expected_data_symbols_candidate": 58
        },
        "fec": {
          "soft_bit_count_estimate": 84,
          "missing_soft_bits_estimate": 90,
          "complete_ldpc_input_candidate_estimate": false
        },
        "rank_score": 116.341034
      },
      {
        "profile": "js8_near_6000",
        "nsps": 6000,
        "symbol_duration_seconds": 0.5,
        "tone_spacing_hz": 2.0,
        "note": "0.500 s timing guard candidate",
        "ok": true,
        "sync": {
          "start_seconds": 52.25,
          "base_freq_hz": 1010.0,
          "candidate_score": 38.27,
          "costas_hits": 2,
          "avg_margin_db": 5.7,
          "candidate_count": 12
        },
        "frame": {
          "symbols_available_after_start": 15,
          "data_symbol_count_estimate": 8,
          "expected_data_symbols_candidate": 58
        },
        "fec": {
          "soft_bit_count_estimate": 24,
          "missing_soft_bits_estimate": 150,
          "complete_ldpc_input_candidate_estimate": false
        },
        "rank_score": 61.900224
      }
    ],
    "selected_profile": {
      "profile": "js8_near_6400",
      "nsps": 6400,
      "rank_score": 225.085,
      "complete_ldpc_input_candidate_estimate": true,
      "soft_bit_count_estimate": 174,
      "missing_soft_bits_estimate": 0
    },
    "decodes": [],
    "warnings": [
      "Step 32 selects the best timing/profile candidate only. It still does not decode final JS8 text."
    ],
    "next_action": "Run auto-ldpc-probe on the same WAV so the selected timing profile is fed into the LDPC probe harness."
  },
  "ldpc_probe": {
    "expected_bits": 174,
    "matrix": {
      "provided": false,
      "real_protocol_matrix": false,
      "status": "no_external_h_matrix_supplied",
      "note": "No JS8/FT8 LDPC H matrix was supplied. Step 32 therefore reports readiness/LLR quality and a prototype parity probe only; it does not claim real FEC decode."
    },
    "prototype_parity_rows_used": true,
    "prototype_row_count": 32,
    "variant_count": 5,
    "variants": [
      {
        "name": "raw_msb_symbol_order",
        "description": "Current Step7/8 FEC bridge: Costas-stripped symbols, MSB-first tone bits.",
        "bit_count": 174,
        "complete_174bit_candidate": true,
        "preview_bits_available": 174,
        "hard_weight_preview": 36,
        "hard_zero_preview": 138,
        "llr_stats": {
          "count": 174,
          "avg_abs": 2.298973,
          "min_abs": 0.012672,
          "max_abs": 4.421458,
          "positive_llr_count": 141,
          "negative_llr_count": 33,
          "zero_llr_count": 0,
          "sign_balance": 0.62069
        },
        "syndrome_probe": {
          "available": true,
          "row_count": 32,
          "unsatisfied_rows": 19,
          "satisfied_rows": 13,
          "unsatisfied_ratio": 0.59375,
          "syndrome_preview": [
            1,
            1,
            0,
            1,
            1,
            1,
            1,
            0,
            0,
            1,
            1,
            0,
            1,
            1,
            1,
            1
          ]
        },
        "real_ldpc_decode_attempted": false,
        "real_ldpc_decode_success": false,
        "rank_score": 94.352142
      },
      {
        "name": "lsb_within_each_tone",
        "description": "Same symbols, but each 3-bit tone value reversed for bit-order comparison.",
        "bit_count": 174,
        "complete_174bit_candidate": true,
        "preview_bits_available": 174,
        "hard_weight_preview": 36,
        "hard_zero_preview": 138,
        "llr_stats": {
          "count": 174,
          "avg_abs": 2.298973,
          "min_abs": 0.012672,
          "max_abs": 4.421458,
          "positive_llr_count": 141,
          "negative_llr_count": 33,
          "zero_llr_count": 0,
          "sign_balance": 0.62069
        },
        "syndrome_probe": {
          "available": true,
          "row_count": 32,
          "unsatisfied_rows": 17,
          "satisfied_rows": 15,
          "unsatisfied_ratio": 0.53125,
          "syndrome_preview": [
            1,
            0,
            1,
            1,
            1,
            1,
            1,
            0,
            1,
            1,
            0,
            1,
            0,
            1,
            0,
            1
          ]
        },
        "real_ldpc_decode_attempted": false,
        "real_ldpc_decode_success": false,
        "rank_score": 95.914642
      },
      {
        "name": "reverse_symbol_order",
        "description": "Same 3-bit symbols in reverse order; diagnostic only.",
        "bit_count": 174,
        "complete_174bit_candidate": true,
        "preview_bits_available": 174,
        "hard_weight_preview": 36,
        "hard_zero_preview": 138,
        "llr_stats": {
          "count": 174,
          "avg_abs": 2.298973,
          "min_abs": 0.012672,
          "max_abs": 4.421458,
          "positive_llr_count": 141,
          "negative_llr_count": 33,
          "zero_llr_count": 0,
          "sign_balance": 0.62069
        },
        "syndrome_probe": {
          "available": true,
          "row_count": 32,
          "unsatisfied_rows": 18,
          "satisfied_rows": 14,
          "unsatisfied_ratio": 0.5625,
          "syndrome_preview": [
            1,
            1,
            0,
            0,
            1,
            0,
            0,
            0,
            1,
            0,
            1,
            1,
            1,
            1,
            0,
            1
          ]
        },
        "real_ldpc_decode_attempted": false,
        "real_ldpc_decode_success": false,
        "rank_score": 95.133392
      },
      {
        "name": "reverse_full_bitstream",
        "description": "Full hard-bit stream reversed; diagnostic only.",
        "bit_count": 174,
        "complete_174bit_candidate": true,
        "preview_bits_available": 174,
        "hard_weight_preview": 36,
        "hard_zero_preview": 138,
        "llr_stats": {
          "count": 174,
          "avg_abs": 2.298973,
          "min_abs": 0.012672,
          "max_abs": 4.421458,
          "positive_llr_count": 141,
          "negative_llr_count": 33,
          "zero_llr_count": 0,
          "sign_balance": 0.62069
        },
        "syndrome_probe": {
          "available": true,
          "row_count": 32,
          "unsatisfied_rows": 16,
          "satisfied_rows": 16,
          "unsatisfied_ratio": 0.5,
          "syndrome_preview": [
            0,
            0,
            1,
            1,
            1,
            0,
            0,
            0,
            1,
            0,
            1,
            0,
            1,
            1,
            1,
            0
          ]
        },
        "real_ldpc_decode_attempted": false,
        "real_ldpc_decode_success": false,
        "rank_score": 96.695892
      },
      {
        "name": "lab_mask_xor_preview",
        "description": "Deterministic lab-only XOR mask preview; not the real JS8 whitening polynomial.",
        "bit_count": 174,
        "complete_174bit_candidate": true,
        "preview_bits_available": 174,
        "hard_weight_preview": 85,
        "hard_zero_preview": 89,
        "llr_stats": {
          "count": 174,
          "avg_abs": 2.298973,
          "min_abs": 0.012672,
          "max_abs": 4.421458,
          "positive_llr_count": 141,
          "negative_llr_count": 33,
          "zero_llr_count": 0,
          "sign_balance": 0.62069
        },
        "syndrome_probe": {
          "available": true,
          "row_count": 32,
          "unsatisfied_rows": 14,
          "satisfied_rows": 18,
          "unsatisfied_ratio": 0.4375,
          "syndrome_preview": [
            0,
            1,
            0,
            0,
            0,
            1,
            1,
            1,
            0,
            0,
            1,
            0,
            1,
            1,
            1,
            0
          ]
        },
        "real_ldpc_decode_attempted": false,
        "real_ldpc_decode_success": false,
        "rank_score": 98.258392
      }
    ],
    "selected_variant": "lab_mask_xor_preview",
    "selected_variant_rank_score": 98.258392,
    "ready_for_real_ldpc_matrix": true,
    "real_ldpc_decode": false,
    "message_unpack": false
  },
  "sync_candidate": {
    "start_sample": 57600,
    "start_seconds": 4.8,
    "base_freq_hz": 1025.0,
    "tone_spacing_hz": 1.875,
    "nsps": 6400,
    "candidate_score": 47.4,
    "costas_hits": 2,
    "avg_margin_db": 8.01
  },
  "frame_candidate": {
    "input_symbol_count": 96,
    "excluded_costas_symbol_count": 0,
    "detected_costas_blocks": [],
    "data_symbol_count_available": 96,
    "data_symbol_count_used": 58,
    "expected_data_symbols_candidate": 58,
    "costas_policy": "js8_leading_only"
  },
  "soft_symbol_summary": {
    "symbol_count": 96,
    "avg_confidence_db": 3.08,
    "min_confidence_db": 0.01,
    "strong_symbol_count": 28,
    "weak_symbol_count": 29,
    "tone_histogram": {
      "0": 48,
      "1": 22,
      "2": 14,
      "3": 6,
      "4": 4,
      "5": 1,
      "6": 1,
      "7": 0
    }
  },
  "fec_input_summary": {
    "soft_bit_count": 174,
    "missing_soft_bits": 0,
    "complete_ldpc_input_candidate": true,
    "llr_convention": "positive=bit0_more_likely, negative=bit1_more_likely, MSB-first candidate"
  },
  "decodes": [],
  "warnings": [
    "Step 32 selects the best timing/profile candidate only. It still does not decode final JS8 text.",
    "No JS8 text decode is expected in Step 32. Final real LDPC/FEC and Varicode/message unpack are not implemented yet.",
    "Costas7 scoring is a lab candidate extractor; real decoder validation requires actual JS8 WAV samples.",
    "No JS8 text decode is expected in Step 32. Final real LDPC/FEC and Varicode/message unpack are still not implemented.",
    "hard_bits_msb_candidate is a lab preview only; real JS8 requires deinterleaving, whitening and LDPC/FEC.",
    "Step 32 JS8 Costas guard uses leading-only Costas exclusion by default to preserve 58 data symbols / 174 soft bits on JS8Lab windows; full FT8 middle/trailing exclusion remains diagnostic-only.",
    "Step 32 prepares LDPC/FEC input candidates and an LDPC probe harness only; it does not yet run final real JS8 LDPC decode or unpack text.",
    "Step 32 does not decode JS8 text yet. It probes bit-order/interleaver/whitening candidates for future real LDPC/FEC integration.",
    "lab_mask_xor_preview is only a repeatable diagnostic mask, not a confirmed JS8 whitening implementation.",
    "Step 32 LDPC probe harness is wired, but no real JS8/FT8 H matrix is supplied yet; prototype parity rows are diagnostic only.",
    "No JS8 message text is decoded in Step 32. Next step must connect/extract the real LDPC matrix/decoder and then the JS8 message unpacker."
  ],
  "next_action": "Next step should connect a confirmed JS8/FT8 LDPC matrix/decoder and then message unpacking after the timing profile is stable."
}

[webftr-js8-lab] OK
[webftr-js8-lab] log file: /decoders/js8_decoder/logs/20260526T115459Z_auto-ldpc-probe.log
[webftr-js8-lab] manifest: /decoders/js8_decoder/logs/20260526T115459Z_auto-ldpc-probe_manifest.json
[webftr-js8-lab] auto-ldpc-probe exit_code=0

========== REAL-RUN STEP 6/9: CANDIDATE EXPORT ==========
[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T114834Z_real_run_candidate_export_output.json
[webftr-js8-lab] JSON timeout guard: 60s
{
  "ok": true,
  "mode": "JS8",
  "tool": "webftr-js8-fec-candidate-export",
  "tool_version": "step32-anchored-candidate-fast-export-guard",
  "input_wav": "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "implementation_stage": "step32_profile_anchor_candidate_export_no_message_unpack",
  "selected_profile": {},
  "profile_selection_source": "profile_scan_json_prefer_js8",
  "profile_scan_json": "/decoders/js8_decoder/logs/20260526T114834Z_real_run_profile_scan_output.json",
  "prefer_js8_realistic_profile": true,
  "nsps_used": 6192,
  "nsps_is_js8_realistic": true,
  "wav": {
    "path": "/decoders/js8_decoder/runtime/quick_prefilter_windows/js8_quick_selected_window.wav",
    "channels": 1,
    "sample_rate": 12000,
    "sample_width_bytes": 2,
    "frames": 720000,
    "duration_seconds": 60.0,
    "rms_dbfs": -9.13,
    "peak_dbfs": -0.72,
    "clipped": false
  },
  "sync_candidate": {
    "start_sample": 0,
    "start_seconds": 0.0,
    "base_freq_hz": 1025.0,
    "tone_spacing_hz": 1.937984,
    "nsps": 6192,
    "candidate_score": 7.04,
    "costas_hits": 1,
    "avg_margin_db": -1.68
  },
  "frame_candidate": {
    "input_symbol_count": 96,
    "excluded_costas_symbol_count": 0,
    "detected_costas_blocks": [],
    "data_symbol_count_available": 96,
    "data_symbol_count_used": 58,
    "expected_data_symbols_candidate": 58,
    "costas_policy": "js8_leading_only"
  },
  "fec_input_summary": {
    "soft_bit_count": 174,
    "missing_soft_bits": 0,
    "complete_ldpc_input_candidate": true,
    "llr_convention": "positive=bit0_more_likely, negative=bit1_more_likely, MSB-first candidate"
  },
  "anchor_context": null,
  "variant_count": 5,
  "selected_variant": {
    "name": "raw_msb_symbol_order",
    "rank_score": 127.389188,
    "complete_174bit_candidate": true,
    "hard_bits_sha256_16": "aa237514554a5da8",
    "hard_weight_174": 42,
    "llr_stats": {
      "count": 174,
      "avg_abs": 2.347297,
      "min_abs": 0.029594,
      "max_abs": 4.31172,
      "positive": 133,
      "negative": 41,
      "zero": 0
    }
  },
  "variants": [
    {
      "name": "raw_msb_symbol_order",
      "description": "Current Step7/8 FEC bridge: Costas-stripped symbols, MSB-first tone bits.",
      "bit_count": 174,
      "llr_count": 174,
      "complete_174bit_candidate": true,
      "hard_bits_174": "101101101000000000000101001000000000000000000000000010010010000011011010010001001000001101010000010001010000000001010000000000000000001010000010001000010101001000010100010101",
      "hard_bits_sha256_16": "aa237514554a5da8",
      "hard_weight_174": 42,
      "llr_full_174": [
        -1.396628,
        1.410553,
        -2.41321,
        -0.360653,
        1.362318,
        -3.052981,
        -0.029594,
        0.699307,
        -0.217716,
        1.30745,
        -0.061966,
        1.164758,
        3.555709,
        2.938852,
        3.676605,
        2.884682,
        2.169718,
        1.312319,
        2.283163,
        2.880758,
        2.448313,
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        0.04658,
        -0.368908,
        3.097415,
        3.195326,
        -2.619625,
        3.944404,
        2.428853,
        1.446456,
        4.173817,
        4.159912,
        4.127261,
        4.160047,
        4.153065,
        3.986903,
        4.176704,
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        2.145986,
        1.320374,
        0.652631,
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        0.96535,
        1.902541,
        1.691451,
        3.479368,
        -1.703122,
        1.877442,
        3.440581,
        -3.839483,
        3.713552,
        2.169,
        -2.181074,
        2.160328,
        2.914693,
        2.990564,
        2.994918,
        2.238077,
        -1.58826,
        -1.11363,
        1.381106,
        0.643602,
        -1.648215,
        3.364301,
        -1.870267,
        2.626728,
        2.293834,
        -1.862337,
        1.965975,
        2.136822,
        1.554042,
        0.100571,
        3.213602,
        2.416474,
        -0.186626,
        3.458546,
        2.392061,
        2.783177,
        2.316949,
        2.706516,
        -2.207322,
        -0.574722,
        0.592245,
        -1.25453,
        2.428594,
        -1.278227,
        2.793268,
        3.045272,
        3.275052,
        2.650291,
        3.485834,
        -3.180713,
        3.409464,
        2.527218,
        1.355412,
        -1.267725,
        3.00931,
        -1.456676,
        3.880352,
        3.725581,
        3.779058,
        1.052726,
        4.111317,
        2.97036,
        1.679701,
        2.0033,
        2.039419,
        -2.230305,
        2.732389,
        -2.818549,
        2.288786,
        4.168607,
        4.170407,
        4.143849,
        4.165879,
        4.170141,
        4.151294,
        4.169206,
        4.144955,
        4.092016,
        4.16402,
        4.131948,
        4.129186,
        4.154576,
        4.102966,
        3.591843,
        1.184399,
        1.450243,
        -1.080448,
        2.754003,
        -0.198239,
        0.246935,
        4.31172,
        0.830568,
        2.49241,
        0.580772,
        -0.496341,
        0.288153,
        2.838707,
        2.861479,
        -0.690814,
        2.311878,
        0.629658,
        0.203427,
        1.973168,
        -1.975915,
        1.968594,
        -0.45403,
        1.876816,
        -0.525517,
        3.52717,
        2.919398,
        -1.370062,
        3.788859,
        3.429702,
        2.657553,
        1.866078,
        -1.685404,
        1.70544,
        -0.394664,
        0.513912,
        0.447295,
        3.452478,
        -1.809619,
        1.607118,
        -1.684481,
        2.049321,
        -1.601644
      ],
      "llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "rank_score": 127.389188
    },
    {
      "name": "lsb_within_each_tone",
      "description": "Same symbols, but each 3-bit tone value reversed for bit-order comparison.",
      "bit_count": 174,
      "llr_count": 174,
      "complete_174bit_candidate": true,
      "hard_bits_174": "101101101000000000000101100000000000000000000000000010010010000110110010010100100000100101010000010100010000000100010000000000000000100010000010100000010101100000010001010101",
      "hard_bits_sha256_16": "c9eebc015cbfc7d5",
      "hard_weight_174": 42,
      "llr_full_174": [
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      "llr_stats": {
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        "positive": 133,
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        "zero": 0
      },
      "rank_score": 119.389188
    },
    {
      "name": "reverse_symbol_order",
      "description": "Same 3-bit symbols in reverse order; diagnostic only.",
      "bit_count": 174,
      "llr_count": 174,
      "complete_174bit_candidate": true,
      "hard_bits_174": "101010100010000001101010000001010000010001000000000000000010001000000010001010000010101001000001001010010011011000010010010000000000000000000000000001101000000000000101101101",
      "hard_bits_sha256_16": "e0aaca7eeb47fb42",
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      "llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "rank_score": 113.389188
    },
    {
      "name": "reverse_full_bitstream",
      "description": "Full hard-bit stream reversed; diagnostic only.",
      "bit_count": 174,
      "llr_count": 174,
      "complete_174bit_candidate": true,
      "hard_bits_174": "101010001010000100101010000100010000010100000000000000000010100000000010100010000010101100000100100010010110110000010010010000000000000000000000000100101000000000000101101101",
      "hard_bits_sha256_16": "586874e4d556ff00",
      "hard_weight_174": 42,
      "llr_full_174": [
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      "llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "rank_score": 112.389188
    },
    {
      "name": "lab_mask_xor_preview",
      "description": "Deterministic lab-only XOR mask preview; not the real JS8 whitening polynomial.",
      "bit_count": 174,
      "llr_count": 174,
      "complete_174bit_candidate": true,
      "hard_bits_174": "001101011011010100111100110011010000101010111110100111010100111011100101110000111111101000110100110001000001001101000111010110110000010011101000010100101000100000000001001010",
      "hard_bits_sha256_16": "8760e03bd72092c3",
      "hard_weight_174": 81,
      "llr_full_174": [
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      ],
      "llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "rank_score": 101.389188
    }
  ],
  "outputs": {
    "candidate_json": "/decoders/js8_decoder/runtime/fec_candidates/js8_quick_selected_window_fec_candidate_step17.json",
    "selected_bits_file": "/decoders/js8_decoder/runtime/fec_candidates/js8_quick_selected_window_fec_candidate_step17.bits"
  },
  "decodes": [],
  "warnings": [
    "No JS8 text decode is expected in Step 32. Final real LDPC/FEC and Varicode/message unpack are not implemented yet.",
    "Costas7 scoring is a lab candidate extractor; real decoder validation requires actual JS8 WAV samples.",
    "No JS8 text decode is expected in Step 32. Final real LDPC/FEC and Varicode/message unpack are still not implemented.",
    "hard_bits_msb_candidate is a lab preview only; real JS8 requires deinterleaving, whitening and LDPC/FEC.",
    "Step 32 JS8 Costas guard uses leading-only Costas exclusion by default to preserve 58 data symbols / 174 soft bits on JS8Lab windows; full FT8 middle/trailing exclusion remains diagnostic-only.",
    "Step 32 prepares LDPC/FEC input candidates and an LDPC probe harness only; it does not yet run final real JS8 LDPC decode or unpack text.",
    "Step 32 does not decode JS8 text yet. It probes bit-order/interleaver/whitening candidates for future real LDPC/FEC integration.",
    "lab_mask_xor_preview is only a repeatable diagnostic mask, not a confirmed JS8 whitening implementation.",
    "Step 32 locks candidate export to JS8-realistic timing and reuses the selected profile sync anchor for FEC symbol extraction where available.",
    "It still does not perform real LDPC/FEC decode or message unpack.",
    "Next step can tune real JS8/FT8 LDPC matrix/deinterleaver/message unpack against this anchored candidate contract."
  ],
  "next_action": "Run collect-logs and upload the JS8Lab bundle. If selected_variant.complete_174bit_candidate is true, proceed to LDPC/deinterleaver/message-unpack tuning."
}
[webftr-js8-lab] candidate-export exit_code=0
[webftr-js8-lab] candidate-export JSON: /decoders/js8_decoder/logs/20260526T114834Z_real_run_candidate_export_output.json
[webftr-js8-lab] Step 32 LDPC probes reuse anchored candidate JSON: /decoders/js8_decoder/runtime/fec_candidates/js8_quick_selected_window_fec_candidate_step17.json

========== REAL-RUN STEP 7/9: LDPC MATRIX PROBE ==========
[webftr-js8-lab] command=ldpc-matrix-probe
[webftr-js8-lab] root=/decoders/js8_decoder
[webftr-js8-lab] log=/decoders/js8_decoder/logs/20260526T115758Z_ldpc-matrix-probe.log
[webftr-js8-lab] manifest=/decoders/js8_decoder/logs/20260526T115758Z_ldpc-matrix-probe_manifest.json
[webftr-js8-lab] utc=20260526T115758Z
[webftr-js8-lab] rx-only guard: no TX / no PTT / no Tune / no Send

[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T115758Z_ldpc_matrix_probe_output.json
[webftr-js8-lab] JSON timeout guard: 180s
{
  "ok": true,
  "mode": "JS8",
  "tool": "webftr-js8-real-ldpc-matrix-syndrome-probe",
  "tool_version": "step32-anchored-candidate-fast-export-guard",
  "input_wav": null,
  "candidate_json": "/decoders/js8_decoder/runtime/fec_candidates/js8_quick_selected_window_fec_candidate_step17.json",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "implementation_stage": "step19_real_ldpc_generator_matrix_syndrome_probe_no_message_unpack",
  "matrix": {
    "code": "(174,91) LDPC generator matrix",
    "generator_rows": 83,
    "generator_cols": 91,
    "message_bits": 91,
    "parity_bits": 83,
    "source_file": "ldpc_174_91_c_generator.f90"
  },
  "candidate_context": {
    "nsps_used": 6192,
    "nsps_is_js8_realistic": true,
    "selected_profile": {},
    "selected_variant": {
      "name": "raw_msb_symbol_order",
      "rank_score": 127.389188,
      "complete_174bit_candidate": true,
      "hard_bits_sha256_16": "aa237514554a5da8",
      "hard_weight_174": 42,
      "llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      }
    }
  },
  "variant_probe_count": 20,
  "best_matrix_probe": {
    "variant": "raw_msb_symbol_order",
    "transform": "reverse_codeword",
    "hard_weight_174": 42,
    "llr_avg_abs": 2.3472972758620685,
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      "parity83_expected": "11001001001010110100001110001011111110011011010011011100111011000101101111100101001",
      "syndrome83": "11101101011000000010001100011001111110011011010011011100011110000101101111001000100",
      "syndrome_weight": 42,
      "valid_codeword_hard_decision": false,
      "message91_sha256_16": "5886f6ba6ff97dcc",
      "codeword174_sha256_16": "586874e4d556ff00"
    },
    "repair": {
      "attempted": true,
      "flip_count": 7,
      "repair_success": false,
      "final_syndrome_weight": 21,
      "trace": [
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        {
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        {
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      ],
      "repaired_message91_sha256_16": "ec0dca697e9b6b75"
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  },
  "all_matrix_probes": [
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        ],
        "repaired_message91_sha256_16": "ec0dca697e9b6b75"
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    },
    {
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        ],
        "repaired_message91_sha256_16": "ec0dca697e9b6b75"
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    {
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    {
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        "message91": "1011011010000000000001011000000000000000000000000000100100100001101100100101001000001001010",
        "parity83_observed": "10000010100010000000100010000000000000000100010000010100000010101100000010001010101",
        "parity83_expected": "01010001110011110101001000111000111101000010011111000011011000000110101111000110000",
        "syndrome83": "11010011010001110101101010111000111101000110001111010111011010101010101101001100101",
        "syndrome_weight": 46,
        "valid_codeword_hard_decision": false,
        "message91_sha256_16": "955c77d80df1fcb9",
        "codeword174_sha256_16": "c9eebc015cbfc7d5"
      },
      "repair": {
        "attempted": true,
        "flip_count": 8,
        "repair_success": false,
        "final_syndrome_weight": 28,
        "trace": [
          {
            "flip_index": 6,
            "llr_abs": 0.029594,
            "gain": 11,
            "syndrome_weight_after": 35
          },
          {
            "flip_index": 137,
            "llr_abs": 0.246935,
            "gain": 1,
            "syndrome_weight_after": 34
          },
          {
            "flip_index": 143,
            "llr_abs": 0.288153,
            "gain": 1,
            "syndrome_weight_after": 33
          },
          {
            "flip_index": 153,
            "llr_abs": 0.45403,
            "gain": 1,
            "syndrome_weight_after": 32
          },
          {
            "flip_index": 142,
            "llr_abs": 0.496341,
            "gain": 1,
            "syndrome_weight_after": 31
          },
          {
            "flip_index": 148,
            "llr_abs": 0.629658,
            "gain": 1,
            "syndrome_weight_after": 30
          },
          {
            "flip_index": 134,
            "llr_abs": 1.080448,
            "gain": 1,
            "syndrome_weight_after": 29
          },
          {
            "flip_index": 132,
            "llr_abs": 1.184399,
            "gain": 1,
            "syndrome_weight_after": 28
          }
        ],
        "repaired_message91_sha256_16": "74cab80ed66254c9"
      }
    },
    {
      "variant": "lab_mask_xor_preview",
      "transform": "reverse_codeword",
      "hard_weight_174": 81,
      "llr_avg_abs": 2.3472972758620685,
      "syndrome": {
        "bits_len": 174,
        "message91": "0101001000000000010001010010100001011100100000110110101110001011001000001000110010110001011",
        "parity83_observed": "11111000011101001110111001010111001011111010101000010110011001111001010110110101100",
        "parity83_expected": "01001011100110101001011010001000011011011001000000000011001001110101001001001010010",
        "syndrome83": "10110011111011100111100011011111010000100011101000010101010000001100011111111111110",
        "syndrome_weight": 47,
        "valid_codeword_hard_decision": false,
        "message91_sha256_16": "3767412c437ee071",
        "codeword174_sha256_16": "2dbdc32b125cc762"
      },
      "repair": {
        "attempted": true,
        "flip_count": 8,
        "repair_success": false,
        "final_syndrome_weight": 29,
        "trace": [
          {
            "flip_index": 20,
            "llr_abs": 0.45403,
            "gain": 11,
            "syndrome_weight_after": 36
          },
          {
            "flip_index": 167,
            "llr_abs": 0.029594,
            "gain": 1,
            "syndrome_weight_after": 35
          },
          {
            "flip_index": 96,
            "llr_abs": 0.100571,
            "gain": 1,
            "syndrome_weight_after": 34
          },
          {
            "flip_index": 150,
            "llr_abs": 0.368908,
            "gain": 1,
            "syndrome_weight_after": 33
          },
          {
            "flip_index": 152,
            "llr_abs": 0.383479,
            "gain": 1,
            "syndrome_weight_after": 32
          },
          {
            "flip_index": 127,
            "llr_abs": 0.652631,
            "gain": 1,
            "syndrome_weight_after": 31
          },
          {
            "flip_index": 166,
            "llr_abs": 0.699307,
            "gain": 1,
            "syndrome_weight_after": 30
          },
          {
            "flip_index": 125,
            "llr_abs": 0.96535,
            "gain": 1,
            "syndrome_weight_after": 29
          }
        ],
        "repaired_message91_sha256_16": "d1606d6c8a9256ef"
      }
    }
  ],
  "decodes": [],
  "outputs": {
    "ldpc_matrix_probe_json": "/decoders/js8_decoder/runtime/ldpc_matrix_probe/step19_ldpc_matrix_probe.json"
  },
  "warnings": [
    "Step 32 uses the real public FT8/JS8-style (174,91) generator matrix for a hard-decision syndrome probe.",
    "This is not yet a complete soft LDPC belief-propagation decoder and does not unpack JS8 messages.",
    "If best_matrix_probe reaches syndrome_weight 0, the next step can feed message91 into CRC/message unpack. Otherwise Step 32 should add real soft LDPC iterations."
  ],
  "next_action": "Upload logs. Next step: soft LDPC belief-propagation/min-sum decoder using this matrix contract, then JS8 message unpacking."
}

[webftr-js8-lab] OK
[webftr-js8-lab] log file: /decoders/js8_decoder/logs/20260526T115758Z_ldpc-matrix-probe.log
[webftr-js8-lab] manifest: /decoders/js8_decoder/logs/20260526T115758Z_ldpc-matrix-probe_manifest.json
[webftr-js8-lab] ldpc-matrix-probe exit_code=0

========== REAL-RUN STEP 8/9: LDPC SOFT DECODE ==========
[webftr-js8-lab] command=ldpc-soft-decode
[webftr-js8-lab] root=/decoders/js8_decoder
[webftr-js8-lab] log=/decoders/js8_decoder/logs/20260526T115812Z_ldpc-soft-decode.log
[webftr-js8-lab] manifest=/decoders/js8_decoder/logs/20260526T115812Z_ldpc-soft-decode_manifest.json
[webftr-js8-lab] utc=20260526T115812Z
[webftr-js8-lab] rx-only guard: no TX / no PTT / no Tune / no Send

[webftr-js8-lab] JSON output: /decoders/js8_decoder/logs/20260526T115812Z_ldpc_soft_decode_output.json
[webftr-js8-lab] JSON timeout guard: 120s
{
  "ok": true,
  "mode": "JS8",
  "tool": "webftr-js8-soft-ldpc-minsum-probe",
  "tool_version": "step32-anchored-candidate-fast-export-guard",
  "input_wav": null,
  "candidate_json": "/decoders/js8_decoder/runtime/fec_candidates/js8_quick_selected_window_fec_candidate_step17.json",
  "rx_only": true,
  "safety": {
    "tx": false,
    "ptt": false,
    "tune": false,
    "send": false,
    "js8call_runtime_control": false
  },
  "implementation_stage": "step32_soft_ldpc_minsum_probe_no_message_unpack",
  "matrix": {
    "code": "(174,91)",
    "message_bits": 91,
    "parity_bits": 83,
    "codeword_bits": 174,
    "check_count": 83
  },
  "decoder": {
    "algorithm": "normalized_min_sum",
    "max_iterations": 40,
    "alpha": 0.8,
    "llr_convention": "positive=bit0_more_likely, negative=bit1_more_likely"
  },
  "candidate_context": {
    "nsps_used": 6192,
    "nsps_is_js8_realistic": true,
    "selected_profile": {},
    "selected_variant": {
      "name": "raw_msb_symbol_order",
      "rank_score": 127.389188,
      "complete_174bit_candidate": true,
      "hard_bits_sha256_16": "aa237514554a5da8",
      "hard_weight_174": 42,
      "llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      }
    }
  },
  "probe_count": 20,
  "best_soft_decode": {
    "variant": "raw_msb_symbol_order",
    "transform": "inverted_bits",
    "source_rank_score": 127.389188,
    "source_llr_stats": {
      "count": 174,
      "avg_abs": 2.347297,
      "min_abs": 0.029594,
      "max_abs": 4.31172,
      "positive": 133,
      "negative": 41,
      "zero": 0
    },
    "success": false,
    "iterations_used": 40,
    "final_syndrome_weight": 29,
    "message91": null,
    "message91_sha256_16": "c4420e8a3025fa0b",
    "codeword174_sha256_16": "a6cbd3921428e957",
    "trace": [
      {
        "iteration": 0,
        "syndrome_weight": 41
      },
      {
        "iteration": 1,
        "syndrome_weight": 40
      },
      {
        "iteration": 2,
        "syndrome_weight": 29
      },
      {
        "iteration": 3,
        "syndrome_weight": 49
      },
      {
        "iteration": 4,
        "syndrome_weight": 40
      },
      {
        "iteration": 5,
        "syndrome_weight": 32
      },
      {
        "iteration": 6,
        "syndrome_weight": 39
      },
      {
        "iteration": 7,
        "syndrome_weight": 46
      },
      {
        "iteration": 8,
        "syndrome_weight": 38
      },
      {
        "iteration": 9,
        "syndrome_weight": 45
      },
      {
        "iteration": 10,
        "syndrome_weight": 39
      },
      {
        "iteration": 15,
        "syndrome_weight": 43
      },
      {
        "iteration": 20,
        "syndrome_weight": 42
      },
      {
        "iteration": 25,
        "syndrome_weight": 40
      },
      {
        "iteration": 30,
        "syndrome_weight": 45
      },
      {
        "iteration": 35,
        "syndrome_weight": 39
      },
      {
        "iteration": 40,
        "syndrome_weight": 51
      }
    ]
  },
  "soft_decode_results": [
    {
      "variant": "raw_msb_symbol_order",
      "transform": "inverted_bits",
      "source_rank_score": 127.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 29,
      "message91": null,
      "message91_sha256_16": "c4420e8a3025fa0b",
      "codeword174_sha256_16": "a6cbd3921428e957",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 41
        },
        {
          "iteration": 1,
          "syndrome_weight": 40
        },
        {
          "iteration": 2,
          "syndrome_weight": 29
        },
        {
          "iteration": 3,
          "syndrome_weight": 49
        },
        {
          "iteration": 4,
          "syndrome_weight": 40
        },
        {
          "iteration": 5,
          "syndrome_weight": 32
        },
        {
          "iteration": 6,
          "syndrome_weight": 39
        },
        {
          "iteration": 7,
          "syndrome_weight": 46
        },
        {
          "iteration": 8,
          "syndrome_weight": 38
        },
        {
          "iteration": 9,
          "syndrome_weight": 45
        },
        {
          "iteration": 10,
          "syndrome_weight": 39
        },
        {
          "iteration": 15,
          "syndrome_weight": 43
        },
        {
          "iteration": 20,
          "syndrome_weight": 42
        },
        {
          "iteration": 25,
          "syndrome_weight": 40
        },
        {
          "iteration": 30,
          "syndrome_weight": 45
        },
        {
          "iteration": 35,
          "syndrome_weight": 39
        },
        {
          "iteration": 40,
          "syndrome_weight": 51
        }
      ]
    },
    {
      "variant": "lsb_within_each_tone",
      "transform": "inverted_bits",
      "source_rank_score": 119.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 29,
      "message91": null,
      "message91_sha256_16": "c4420e8a3025fa0b",
      "codeword174_sha256_16": "a6cbd3921428e957",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 41
        },
        {
          "iteration": 1,
          "syndrome_weight": 40
        },
        {
          "iteration": 2,
          "syndrome_weight": 29
        },
        {
          "iteration": 3,
          "syndrome_weight": 49
        },
        {
          "iteration": 4,
          "syndrome_weight": 40
        },
        {
          "iteration": 5,
          "syndrome_weight": 32
        },
        {
          "iteration": 6,
          "syndrome_weight": 39
        },
        {
          "iteration": 7,
          "syndrome_weight": 46
        },
        {
          "iteration": 8,
          "syndrome_weight": 38
        },
        {
          "iteration": 9,
          "syndrome_weight": 45
        },
        {
          "iteration": 10,
          "syndrome_weight": 39
        },
        {
          "iteration": 15,
          "syndrome_weight": 43
        },
        {
          "iteration": 20,
          "syndrome_weight": 42
        },
        {
          "iteration": 25,
          "syndrome_weight": 40
        },
        {
          "iteration": 30,
          "syndrome_weight": 45
        },
        {
          "iteration": 35,
          "syndrome_weight": 39
        },
        {
          "iteration": 40,
          "syndrome_weight": 51
        }
      ]
    },
    {
      "variant": "reverse_symbol_order",
      "transform": "reverse_inverted_codeword",
      "source_rank_score": 113.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 29,
      "message91": null,
      "message91_sha256_16": "c4420e8a3025fa0b",
      "codeword174_sha256_16": "a6cbd3921428e957",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 41
        },
        {
          "iteration": 1,
          "syndrome_weight": 40
        },
        {
          "iteration": 2,
          "syndrome_weight": 29
        },
        {
          "iteration": 3,
          "syndrome_weight": 49
        },
        {
          "iteration": 4,
          "syndrome_weight": 40
        },
        {
          "iteration": 5,
          "syndrome_weight": 32
        },
        {
          "iteration": 6,
          "syndrome_weight": 39
        },
        {
          "iteration": 7,
          "syndrome_weight": 46
        },
        {
          "iteration": 8,
          "syndrome_weight": 38
        },
        {
          "iteration": 9,
          "syndrome_weight": 45
        },
        {
          "iteration": 10,
          "syndrome_weight": 39
        },
        {
          "iteration": 15,
          "syndrome_weight": 43
        },
        {
          "iteration": 20,
          "syndrome_weight": 42
        },
        {
          "iteration": 25,
          "syndrome_weight": 40
        },
        {
          "iteration": 30,
          "syndrome_weight": 45
        },
        {
          "iteration": 35,
          "syndrome_weight": 39
        },
        {
          "iteration": 40,
          "syndrome_weight": 51
        }
      ]
    },
    {
      "variant": "reverse_full_bitstream",
      "transform": "reverse_inverted_codeword",
      "source_rank_score": 112.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 29,
      "message91": null,
      "message91_sha256_16": "c4420e8a3025fa0b",
      "codeword174_sha256_16": "a6cbd3921428e957",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 41
        },
        {
          "iteration": 1,
          "syndrome_weight": 40
        },
        {
          "iteration": 2,
          "syndrome_weight": 29
        },
        {
          "iteration": 3,
          "syndrome_weight": 49
        },
        {
          "iteration": 4,
          "syndrome_weight": 40
        },
        {
          "iteration": 5,
          "syndrome_weight": 32
        },
        {
          "iteration": 6,
          "syndrome_weight": 39
        },
        {
          "iteration": 7,
          "syndrome_weight": 46
        },
        {
          "iteration": 8,
          "syndrome_weight": 38
        },
        {
          "iteration": 9,
          "syndrome_weight": 45
        },
        {
          "iteration": 10,
          "syndrome_weight": 39
        },
        {
          "iteration": 15,
          "syndrome_weight": 43
        },
        {
          "iteration": 20,
          "syndrome_weight": 42
        },
        {
          "iteration": 25,
          "syndrome_weight": 40
        },
        {
          "iteration": 30,
          "syndrome_weight": 45
        },
        {
          "iteration": 35,
          "syndrome_weight": 39
        },
        {
          "iteration": 40,
          "syndrome_weight": 51
        }
      ]
    },
    {
      "variant": "lab_mask_xor_preview",
      "transform": "inverted_bits",
      "source_rank_score": 101.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 29,
      "message91": null,
      "message91_sha256_16": "c4420e8a3025fa0b",
      "codeword174_sha256_16": "a6cbd3921428e957",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 41
        },
        {
          "iteration": 1,
          "syndrome_weight": 40
        },
        {
          "iteration": 2,
          "syndrome_weight": 29
        },
        {
          "iteration": 3,
          "syndrome_weight": 49
        },
        {
          "iteration": 4,
          "syndrome_weight": 40
        },
        {
          "iteration": 5,
          "syndrome_weight": 32
        },
        {
          "iteration": 6,
          "syndrome_weight": 39
        },
        {
          "iteration": 7,
          "syndrome_weight": 46
        },
        {
          "iteration": 8,
          "syndrome_weight": 38
        },
        {
          "iteration": 9,
          "syndrome_weight": 45
        },
        {
          "iteration": 10,
          "syndrome_weight": 39
        },
        {
          "iteration": 15,
          "syndrome_weight": 43
        },
        {
          "iteration": 20,
          "syndrome_weight": 42
        },
        {
          "iteration": 25,
          "syndrome_weight": 40
        },
        {
          "iteration": 30,
          "syndrome_weight": 45
        },
        {
          "iteration": 35,
          "syndrome_weight": 39
        },
        {
          "iteration": 40,
          "syndrome_weight": 51
        }
      ]
    },
    {
      "variant": "raw_msb_symbol_order",
      "transform": "reverse_codeword",
      "source_rank_score": 127.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 31,
      "message91": null,
      "message91_sha256_16": "ac67150b95806719",
      "codeword174_sha256_16": "a5cb1fcaa6b0cc6a",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 41
        },
        {
          "iteration": 1,
          "syndrome_weight": 42
        },
        {
          "iteration": 2,
          "syndrome_weight": 46
        },
        {
          "iteration": 3,
          "syndrome_weight": 41
        },
        {
          "iteration": 4,
          "syndrome_weight": 36
        },
        {
          "iteration": 5,
          "syndrome_weight": 37
        },
        {
          "iteration": 6,
          "syndrome_weight": 49
        },
        {
          "iteration": 7,
          "syndrome_weight": 34
        },
        {
          "iteration": 8,
          "syndrome_weight": 37
        },
        {
          "iteration": 9,
          "syndrome_weight": 32
        },
        {
          "iteration": 10,
          "syndrome_weight": 36
        },
        {
          "iteration": 15,
          "syndrome_weight": 33
        },
        {
          "iteration": 20,
          "syndrome_weight": 46
        },
        {
          "iteration": 25,
          "syndrome_weight": 46
        },
        {
          "iteration": 30,
          "syndrome_weight": 34
        },
        {
          "iteration": 35,
          "syndrome_weight": 45
        },
        {
          "iteration": 40,
          "syndrome_weight": 45
        }
      ]
    },
    {
      "variant": "lsb_within_each_tone",
      "transform": "reverse_codeword",
      "source_rank_score": 119.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 31,
      "message91": null,
      "message91_sha256_16": "ac67150b95806719",
      "codeword174_sha256_16": "a5cb1fcaa6b0cc6a",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 41
        },
        {
          "iteration": 1,
          "syndrome_weight": 42
        },
        {
          "iteration": 2,
          "syndrome_weight": 46
        },
        {
          "iteration": 3,
          "syndrome_weight": 41
        },
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        },
        {
          "iteration": 40,
          "syndrome_weight": 34
        }
      ]
    },
    {
      "variant": "reverse_full_bitstream",
      "transform": "inverted_bits",
      "source_rank_score": 112.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 33,
      "message91": null,
      "message91_sha256_16": "3da67efa8398894a",
      "codeword174_sha256_16": "c0ffb55faec27219",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 37
        },
        {
          "iteration": 1,
          "syndrome_weight": 33
        },
        {
          "iteration": 2,
          "syndrome_weight": 42
        },
        {
          "iteration": 3,
          "syndrome_weight": 38
        },
        {
          "iteration": 4,
          "syndrome_weight": 38
        },
        {
          "iteration": 5,
          "syndrome_weight": 42
        },
        {
          "iteration": 6,
          "syndrome_weight": 44
        },
        {
          "iteration": 7,
          "syndrome_weight": 40
        },
        {
          "iteration": 8,
          "syndrome_weight": 37
        },
        {
          "iteration": 9,
          "syndrome_weight": 43
        },
        {
          "iteration": 10,
          "syndrome_weight": 40
        },
        {
          "iteration": 15,
          "syndrome_weight": 46
        },
        {
          "iteration": 20,
          "syndrome_weight": 41
        },
        {
          "iteration": 25,
          "syndrome_weight": 35
        },
        {
          "iteration": 30,
          "syndrome_weight": 45
        },
        {
          "iteration": 35,
          "syndrome_weight": 44
        },
        {
          "iteration": 40,
          "syndrome_weight": 34
        }
      ]
    },
    {
      "variant": "lab_mask_xor_preview",
      "transform": "reverse_inverted_codeword",
      "source_rank_score": 101.389188,
      "source_llr_stats": {
        "count": 174,
        "avg_abs": 2.347297,
        "min_abs": 0.029594,
        "max_abs": 4.31172,
        "positive": 133,
        "negative": 41,
        "zero": 0
      },
      "success": false,
      "iterations_used": 40,
      "final_syndrome_weight": 33,
      "message91": null,
      "message91_sha256_16": "3da67efa8398894a",
      "codeword174_sha256_16": "c0ffb55faec27219",
      "trace": [
        {
          "iteration": 0,
          "syndrome_weight": 37
        },
        {
          "iteration": 1,
          "syndrome_weight": 33
        },
        {
          "iteration": 2,
          "syndrome_weight": 42
        },
        {
          "iteration": 3,
          "syndrome_weight": 38
        },
        {
          "iteration": 4,
          "syndrome_weight": 38
        },
        {
          "iteration": 5,
          "syndrome_weight": 42
        },
        {
          "iteration": 6,
          "syndrome_weight": 44
        },
        {
          "iteration": 7,
          "syndrome_weight": 40
        },
        {
          "iteration": 8,
          "syndrome_weight": 37
        },
        {
          "iteration": 9,
          "syndrome_weight": 43
        },
        {
          "iteration": 10,
          "syndrome_weight": 40
        },
        {
          "iteration": 15,
          "syndrome_weight": 46
        },
        {
          "iteration": 20,
          "syndrome_weight": 41
        },
        {
          "iteration": 25,
          "syndrome_weight": 35
        },
        {
          "iteration": 30,
          "syndrome_weight": 45
        },
        {
          "iteration": 35,
          "syndrome_weight": 44
        },
        {
          "iteration": 40,
          "syndrome_weight": 34
        }
      ]
    }
  ],
  "decodes": [],
  "outputs": {
    "ldpc_soft_decode_json": "/decoders/js8_decoder/runtime/ldpc_soft_decode/step32_ldpc_soft_decode.json"
  },
  "warnings": [
    "Step 32 runs a real normalized-min-sum soft LDPC probe against the public (174,91) matrix contract.",
    "This still does not unpack JS8 text or validate CRC/message payloads.",
    "If success is true and syndrome_weight is 0, the next step can unpack the 91-bit message. Otherwise more deinterleaver/order/LLR tuning is required."
  ],
  "next_action": "Upload logs. Next step: if no valid codeword, improve interleaver/order/LLR mapping; if valid, add JS8 message unpack/CRC."
}

[webftr-js8-lab] OK
[webftr-js8-lab] log file: /decoders/js8_decoder/logs/20260526T115812Z_ldpc-soft-decode.log
[webftr-js8-lab] manifest: /decoders/js8_decoder/logs/20260526T115812Z_ldpc-soft-decode_manifest.json
[webftr-js8-lab] ldpc-soft-decode exit_code=0

========== REAL-RUN STEP 9/9: JS8LAB LOG BUNDLE ==========
[webftr-js8-lab] collecting JS8Lab logs from /decoders/js8_decoder/logs
[webftr-js8-lab] upload this JS8Lab bundle: /decoders/js8_decoder/logs/js8_decoder_lab_real_run_20260526T114834Z.zip

[webftr-js8-lab] real-run completed with errors, but JS8Lab log bundle was created.
[webftr-js8-lab] upload bundle: /decoders/js8_decoder/logs/js8_decoder_lab_real_run_20260526T114834Z.zip

[webftr-js8-lab] FAILED exit_code=143
[webftr-js8-lab] log file: /decoders/js8_decoder/logs/20260526T114834Z_real-run.log
[webftr-js8-lab] manifest: /decoders/js8_decoder/logs/20260526T114834Z_real-run_manifest.json

[webftr-js8-lab] server-deep-run completed with errors, but logs/browser report were written.

[webftr-js8-lab] FAILED exit_code=143
[webftr-js8-lab] log file: /decoders/js8_decoder/logs/20260526T114834Z_server-deep-run.log
[webftr-js8-lab] manifest: /decoders/js8_decoder/logs/20260526T114834Z_server-deep-run_manifest.json
[js8.sh job] finished utc=2026-05-26T11:59:32Z exit_code=143