[
  {
    "id": "node-lab-flow",
    "type": "tab",
    "label": "Node Lab | live workshop emulation",
    "disabled": false,
    "info": "Continuously generated workshop telemetry in Node-RED. Every sensor is explicitly emulated; app counters and timing are measured from this runtime."
  },
  {
    "id": "live-truth-note",
    "type": "comment",
    "z": "node-lab-flow",
    "name": "LIVE-GENERATED EMULATION: three stations + real app metrics",
    "info": "A backend tick is generated every 1.5 seconds. Public scenarios transform only the current response and never change shared flow settings.",
    "x": 470,
    "y": 60,
    "wires": []
  },
  {
    "id": "live-tick",
    "type": "inject",
    "z": "node-lab-flow",
    "name": "Generate workshop tick every 1.5 s",
    "props": [
      {
        "p": "payload"
      },
      {
        "p": "topic",
        "vt": "str"
      }
    ],
    "repeat": "1.5",
    "crontab": "",
    "once": true,
    "onceDelay": 0.1,
    "payload": "",
    "payloadType": "date",
    "topic": "node-lab/live-tick",
    "x": 210,
    "y": 140,
    "wires": [
      [
        "generate-workshop-tick"
      ]
    ]
  },
  {
    "id": "generate-workshop-tick",
    "type": "function",
    "z": "node-lab-flow",
    "name": "Generate three emulated stations",
    "func": "const started = Date.now();\nconst round = (value, digits = 1) => Number(value.toFixed(digits));\nconst sequence = Number(flow.get('sampleSequence') || 0) + 1;\nconst appStartedAt = Number(flow.get('appStartedAt') || started);\nflow.set('appStartedAt', appStartedAt);\nflow.set('sampleSequence', sequence);\nconst phase = sequence / 3;\nconst generatedAt = new Date(started).toISOString();\nconst sampleKey = `NL-${String(sequence).padStart(8, '0')}`;\nconst stations = [\n  {\n    id:'cnc-cell', name:'CNC Cell', zone:'Machining bay', state:'RUNNING', health:'NORMAL', quality:'good',\n    observedAt:generatedAt, temperatureC:round(24.2 + Math.sin(phase) * 1.5), thresholdC:30,\n    powerKw:round(4.8 + Math.cos(phase * 0.8) * 0.7), processValue:Math.round((sequence * 7) % 100),\n    processLabel:'Cycle progress', processUnit:'%'\n  },\n  {\n    id:'curing-oven', name:'Curing Oven', zone:'Finishing bay', state:'HOLDING', health:'NORMAL', quality:'good',\n    observedAt:generatedAt, temperatureC:round(68.5 + Math.sin(phase * 0.65) * 3.8), thresholdC:82,\n    powerKw:round(8.7 + Math.cos(phase * 0.55) * 1.2), processValue:Math.round((sequence * 4 + 35) % 100),\n    processLabel:'Batch progress', processUnit:'%'\n  },\n  {\n    id:'packing-line', name:'Packing Line', zone:'Dispatch bay', state:'RUNNING', health:'NORMAL', quality:'good',\n    observedAt:generatedAt, temperatureC:round(28.8 + Math.sin(phase * 1.2) * 1.1), thresholdC:42,\n    powerKw:round(2.5 + Math.cos(phase) * 0.35), processValue:Math.round(44 + Math.sin(phase * 0.9) * 5),\n    processLabel:'Throughput', processUnit:' packs/min'\n  }\n];\nconst generationLatencyMs = Math.max(0, Date.now() - started);\nconst tick = {schemaVersion:'2.0.0',sampleId:sequence,sampleKey,generatedAt,intervalMs:1500,stations,generationLatencyMs};\nflow.set('latestTick', tick);\nflow.set('ticksGenerated', sequence);\nflow.set('messagesProcessed', Number(flow.get('messagesProcessed') || 0) + 1);\nnode.status({fill:'green',shape:'dot',text:`${sampleKey} · ${stations.length} emulated stations`});\nreturn null;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 520,
    "y": 140,
    "wires": [
      []
    ]
  },
  {
    "id": "live-http",
    "type": "http in",
    "z": "node-lab-flow",
    "name": "Read current workshop snapshot",
    "url": "/api/live",
    "method": "get",
    "upload": false,
    "swaggerDoc": "",
    "x": 210,
    "y": 240,
    "wires": [
      [
        "build-live-response"
      ]
    ]
  },
  {
    "id": "build-live-response",
    "type": "function",
    "z": "node-lab-flow",
    "name": "Apply request-only scenario",
    "func": "const builtStarted = Date.now();\nconst allowed = {\n  normal:{label:'Normal shift'},\n  heating:{label:'Heating load'},\n  fault:{label:'Fault and stale signal'},\n  recover:{label:'Controlled recovery'}\n};\nconst requested = String(msg.req?.query?.scenario || 'normal').toLowerCase();\nmsg.headers = {'Content-Type':'application/json; charset=utf-8','Cache-Control':'no-store'};\nif (!Object.prototype.hasOwnProperty.call(allowed, requested)) {\n  msg.statusCode = 400;\n  msg.payload = {accepted:false,error:'scenario must be normal, heating, fault or recover'};\n  return msg;\n}\nconst tick = flow.get('latestTick');\nif (!tick) {\n  msg.statusCode = 503;\n  msg.payload = {accepted:false,error:'live generator is starting'};\n  return msg;\n}\nconst now = Date.now();\nconst snapshot = JSON.parse(JSON.stringify(tick));\nconst byId = Object.fromEntries(snapshot.stations.map((station) => [station.id, station]));\nconst events = [];\nif (requested === 'normal') {\n  events.push({level:'info',stationId:null,message:'All emulated workshop signals are inside their teaching limits.'});\n}\nif (requested === 'heating') {\n  byId['cnc-cell'].temperatureC = Number((byId['cnc-cell'].temperatureC + 3.5).toFixed(1));\n  byId['cnc-cell'].powerKw = Number((byId['cnc-cell'].powerKw + 1.1).toFixed(1));\n  byId['cnc-cell'].state = 'LOAD RISING';\n  byId['cnc-cell'].health = 'WATCH';\n  byId['curing-oven'].temperatureC = Number((byId['curing-oven'].temperatureC + 8).toFixed(1));\n  byId['curing-oven'].powerKw = Number((byId['curing-oven'].powerKw + 2.5).toFixed(1));\n  byId['curing-oven'].state = 'HEATING';\n  byId['curing-oven'].health = 'WATCH';\n  events.push({level:'watch',stationId:'curing-oven',message:'Heating load is rising but remains below the emulated limit.'});\n}\nif (requested === 'fault') {\n  byId['cnc-cell'].temperatureC = Number((byId['cnc-cell'].thresholdC + 5.2).toFixed(1));\n  byId['cnc-cell'].powerKw = 0.6;\n  byId['cnc-cell'].state = 'THERMAL TRIP';\n  byId['cnc-cell'].health = 'ALERT';\n  byId['packing-line'].temperatureC = null;\n  byId['packing-line'].powerKw = null;\n  byId['packing-line'].quality = 'missing';\n  byId['packing-line'].observedAt = new Date(now - 10000).toISOString();\n  byId['packing-line'].state = 'SIGNAL LOST';\n  byId['packing-line'].health = 'STALE';\n  events.push({level:'alert',stationId:'cnc-cell',message:'Thermal trip: emulated temperature crossed its limit.'});\n  events.push({level:'alert',stationId:'packing-line',message:'Missing signal: the last emulated observation is stale.'});\n}\nif (requested === 'recover') {\n  byId['cnc-cell'].temperatureC = Number((byId['cnc-cell'].thresholdC - 2.5).toFixed(1));\n  byId['cnc-cell'].powerKw = 2.1;\n  byId['cnc-cell'].state = 'COOL-DOWN';\n  byId['cnc-cell'].health = 'RECOVERING';\n  byId['curing-oven'].state = 'HOLDING';\n  byId['packing-line'].state = 'RESTARTED';\n  events.push({level:'recovery',stationId:'cnc-cell',message:'Recovery confirmed: valid emulated temperature is below the limit.'});\n  events.push({level:'info',stationId:'packing-line',message:'Fresh packing-line signal restored for this response.'});\n}\nsnapshot.stations = Object.values(byId).map((station) => {\n  const validTemperature = Number.isFinite(station.temperatureC);\n  const comfortMargin = validTemperature ? Number((station.thresholdC - station.temperatureC).toFixed(1)) : null;\n  return {...station,comfort_margin_c:comfortMargin,ageMs:Math.max(0, now - Date.parse(station.observedAt))};\n});\nconst primary = snapshot.stations.find((station) => station.id === 'cnc-cell');\nsnapshot.configured_demo_temperature_limit_c = primary.thresholdC;\nsnapshot.validated_temperature_c = Number.isFinite(primary.temperatureC) ? primary.temperatureC : null;\nsnapshot.comfort_margin_c = primary.comfort_margin_c;\nconst apiResponses = Number(flow.get('apiResponses') || 0) + 1;\nflow.set('apiResponses', apiResponses);\nconst messagesProcessed = Number(flow.get('messagesProcessed') || 0) + 1;\nflow.set('messagesProcessed', messagesProcessed);\nconst appStartedAt = Number(flow.get('appStartedAt') || now);\nsnapshot.scenario = {id:requested,label:allowed[requested].label,scope:'this-response-only'};\nsnapshot.source = {kind:'live-generated-emulation',hardwareConnected:false,physicalSensors:false,customerData:false};\nsnapshot.events = events.map((event,index) => ({...event,id:`${snapshot.sampleKey}-E${index + 1}`,at:snapshot.generatedAt}));\nsnapshot.runtime = {\n  nodeRedVersion:'5.0.8',\n  flowVersion:'2.0.0',\n  uptimeSeconds:Math.max(0, Math.floor((now - appStartedAt) / 1000)),\n  ticksGenerated:Number(flow.get('ticksGenerated') || 0),\n  apiResponses,\n  messagesProcessed,\n  generationLatencyMs:Number(snapshot.generationLatencyMs || 0),\n  responseBuildMs:Math.max(0, Date.now() - builtStarted),\n  tickAgeMs:Math.max(0, now - Date.parse(snapshot.generatedAt)),\n  generatorIntervalMs:1500\n};\nmsg.statusCode = 200;\nmsg.payload = snapshot;\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 510,
    "y": 240,
    "wires": [
      [
        "live-response"
      ]
    ]
  },
  {
    "id": "live-response",
    "type": "http response",
    "z": "node-lab-flow",
    "name": "Live workshop JSON",
    "statusCode": "",
    "headers": {},
    "x": 790,
    "y": 240,
    "wires": []
  },
  {
    "id": "sample-http",
    "type": "http in",
    "z": "node-lab-flow",
    "name": "Legacy bounded validation sample",
    "url": "/api/sample",
    "method": "post",
    "upload": false,
    "swaggerDoc": "",
    "x": 210,
    "y": 360,
    "wires": [
      [
        "validate-sample"
      ]
    ]
  },
  {
    "id": "validate-sample",
    "type": "function",
    "z": "node-lab-flow",
    "name": "Allow 22 C, 30 C or 34 C only",
    "func": "const origin = String(msg.req?.headers?.origin || '');\nconst allowedOrigin = env.get('NODE_LAB_ALLOWED_ORIGIN') || 'http://127.0.0.1:1880';\nconst raw = msg.payload && typeof msg.payload === 'object' ? msg.payload.temperature : undefined;\nmsg.headers = {'Content-Type':'application/json; charset=utf-8','Cache-Control':'no-store'};\nif (origin !== allowedOrigin) {\n    msg.statusCode = 403;\n    msg.payload = {error:'same-origin request required'};\n    return [null, msg];\n}\nif (typeof raw !== 'number' || !Number.isFinite(raw) || ![22,30,34].includes(raw)) {\n    msg.statusCode = 400;\n    msg.payload = {error:'sample must be the JSON number 22, 30 or 34', accepted:false};\n    return [null, msg];\n}\nmsg.payload = raw;\nmsg.topic = 'synthetic-temperature';\nreturn [msg, null];",
    "outputs": 2,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 500,
    "y": 360,
    "wires": [
      [
        "threshold-rule"
      ],
      [
        "rejected-response"
      ]
    ]
  },
  {
    "id": "threshold-rule",
    "type": "function",
    "z": "node-lab-flow",
    "name": "Threshold at 30 C",
    "func": "const temperature = Number(msg.payload);\nconst alert = temperature >= 30;\nmsg.statusCode = 200;\nmsg.headers = {'Content-Type':'application/json; charset=utf-8','Cache-Control':'no-store'};\nmsg.payload = {\n    accepted:true,\n    temperature,\n    threshold:30,\n    validated_temperature_c:temperature,\n    configured_demo_temperature_limit_c:30,\n    comfort_margin_c:Number((30 - temperature).toFixed(1)),\n    status:alert ? 'HIGH TEMPERATURE' : 'NORMAL OPERATION',\n    source:'synthetic-demo',\n    sequence:alert ? 'alert' : 'normal'\n};\nnode.status({fill:alert ? 'red' : 'green',shape:'dot',text:temperature + ' C | ' + msg.payload.sequence});\nreturn msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 760,
    "y": 340,
    "wires": [
      [
        "accepted-response"
      ]
    ]
  },
  {
    "id": "accepted-response",
    "type": "http response",
    "z": "node-lab-flow",
    "name": "Accepted validation JSON",
    "statusCode": "",
    "headers": {},
    "x": 1010,
    "y": 320,
    "wires": []
  },
  {
    "id": "rejected-response",
    "type": "http response",
    "z": "node-lab-flow",
    "name": "Rejected validation JSON",
    "statusCode": "",
    "headers": {},
    "x": 770,
    "y": 400,
    "wires": []
  },
  {
    "id": "health-http",
    "type": "http in",
    "z": "node-lab-flow",
    "name": "Health endpoint",
    "url": "/healthz",
    "method": "get",
    "upload": false,
    "swaggerDoc": "",
    "x": 190,
    "y": 500,
    "wires": [
      [
        "health-payload"
      ]
    ]
  },
  {
    "id": "health-payload",
    "type": "function",
    "z": "node-lab-flow",
    "name": "Generator-aware health",
    "func": "const now=Date.now(); const tick=flow.get('latestTick'); const age=tick ? Math.max(0,now-Date.parse(tick.generatedAt)) : null; const healthy=Boolean(tick) && age <= 5000; msg.statusCode=healthy?200:503; msg.headers={'Content-Type':'application/json; charset=utf-8','Cache-Control':'no-store'}; msg.payload={status:healthy?'ok':'starting',service:'node-lab',runtime:'node-red',version:'2.0.0',generator:{intervalMs:1500,lastTickAgeMs:age}}; return msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 470,
    "y": 500,
    "wires": [
      [
        "health-response"
      ]
    ]
  },
  {
    "id": "health-response",
    "type": "http response",
    "z": "node-lab-flow",
    "name": "Health JSON",
    "statusCode": "",
    "headers": {},
    "x": 740,
    "y": 500,
    "wires": []
  },
  {
    "id": "info-http",
    "type": "http in",
    "z": "node-lab-flow",
    "name": "Public truth endpoint",
    "url": "/api/info",
    "method": "get",
    "upload": false,
    "swaggerDoc": "",
    "x": 190,
    "y": 580,
    "wires": [
      [
        "info-payload"
      ]
    ]
  },
  {
    "id": "info-payload",
    "type": "function",
    "z": "node-lab-flow",
    "name": "Live dashboard facts",
    "func": "msg.statusCode=200; msg.headers={'Content-Type':'application/json; charset=utf-8','Cache-Control':'no-store'}; msg.payload={synthetic:true,emulatedSensors:true,physicalDevice:false,liveAiInference:false,customerData:false,stationCount:3,generatorIntervalMs:1500,scenarios:['normal','heating','fault','recover'],visitorState:'browser-tab-and-request-only',measuredRuntime:['ticksGenerated','apiResponses','messagesProcessed','uptimeSeconds','generationLatencyMs'],sourceRevision:env.get('NODE_LAB_SOURCE_REVISION')||'development',sourceArchiveSha256:env.get('NODE_LAB_SOURCE_ARCHIVE_SHA256')||'unavailable'}; return msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 460,
    "y": 580,
    "wires": [
      [
        "info-response"
      ]
    ]
  },
  {
    "id": "info-response",
    "type": "http response",
    "z": "node-lab-flow",
    "name": "Truth JSON",
    "statusCode": "",
    "headers": {},
    "x": 730,
    "y": 580,
    "wires": []
  },
  {
    "id": "capture-http",
    "type": "http in",
    "z": "node-lab-flow",
    "name": "Read-only recording evidence",
    "url": "/api/capture",
    "method": "get",
    "upload": false,
    "swaggerDoc": "",
    "x": 210,
    "y": 660,
    "wires": [
      [
        "capture-payload"
      ]
    ]
  },
  {
    "id": "capture-payload",
    "type": "function",
    "z": "node-lab-flow",
    "name": "Recording gate facts",
    "func": "msg.statusCode=200; msg.headers={'Content-Type':'application/json; charset=utf-8','Cache-Control':'no-store'}; msg.payload={recordingPhase:env.get('NODE_LAB_RECORDING_PHASE')||'recorded-change',reservedChange:{id:'comfort-margin',performed:true,description:'The actual Node-RED response path now derives comfort_margin_c from the configured limit and validated temperature.'},sourceRevision:env.get('NODE_LAB_SOURCE_REVISION')||'development',sourceArchiveSha256:env.get('NODE_LAB_SOURCE_ARCHIVE_SHA256')||'unavailable',artifacts:{prompt:'capture/prompt.md',beforeFunction:'capture/before-live-response.js',functionalDiff:'capture/comfort-margin.diff',validation:'capture/change-validation.json',deployedReadback:'capture/change-readback.json',dockerRuntime:'capture/docker-evidence.json',deployedFlow:'source/flows.json',telemetrySchema:'source/telemetry.schema.json'},runtimeEvidence:{image:'local/node-lab:2.0.0',imageId:env.get('NODE_LAB_IMAGE_ID')||'unavailable',baseImage:'nodered/node-red:5.0.4@sha256:10f40d0a83e7e5852b13d4d472b2006b05b1cca6d55e2f29a55a12c25a630cb6',runtime:'Node-RED 5.0.8',persistentData:'/data named volume',network:'isolated project network',editorPublic:false,readOnlyRootfs:true,noNewPrivileges:true,capabilities:'all dropped',healthEndpoint:'healthz'},truth:'This is a guided recording of an actual bounded edit, checks and release. The privacy pause between the two owned recording clips is disclosed in the release evidence. Inactive build waits may be shortened later with a truthful label; no terminal, chat or completion is fabricated.'}; return msg;",
    "outputs": 1,
    "noerr": 0,
    "initialize": "",
    "finalize": "",
    "libs": [],
    "x": 490,
    "y": 660,
    "wires": [
      [
        "capture-response"
      ]
    ]
  },
  {
    "id": "capture-response",
    "type": "http response",
    "z": "node-lab-flow",
    "name": "Capture facts JSON",
    "statusCode": "",
    "headers": {},
    "x": 770,
    "y": 660,
    "wires": []
  }
]