style: palette swatch → (domain-hue redesign 2026-05-21)

Sidebar swatch now follows function family rather than S88 level, so the
palette is visually identifiable instead of monochromatically blue. Editor-group
rectangles in flow.json still follow S88 — only the registerType color changed.
Full table + rationale: superproject .claude/rules/node-red-flow-layout.md §10.0
and .claude/refactor/OPEN_QUESTIONS.md (2026-05-21 entry).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -1,6 +1,6 @@
 # monster — Claude Code context
 
-Multi-parameter biological process monitoring.
+Sampling-cabinet pulse counter — measures sampled volumes and pulse cadence; does *not* analyze constituents (NH4 / NO3 / COD / TSS). For multi-parameter analyses, wire the output to an upstream/downstream analyzer node.
 Part of the [EVOLV](https://gitea.wbd-rd.nl/RnD/EVOLV) wastewater-automation platform.
 
 ## S88 classification
@@ -21,3 +21,20 @@ Key points for this node:
 - Stack same-level siblings vertically.
 - Parent/children sit on adjacent lanes (children one lane left, parent one lane right).
 - Wrap in a Node-RED group box coloured `#50a8d9` (Unit).
+
+## Folder & File Layout
+
+Every per-node file MUST use the folder name (`monster`) **exactly**, case-sensitive. Full rule: [`.claude/rules/node-architecture.md`](https://gitea.wbd-rd.nl/RnD/EVOLV/src/branch/development/.claude/rules/node-architecture.md) in the EVOLV superproject.
+
+| Path | Required name |
+|---|---|
+| Entry file | `monster.js` |
+| Editor HTML | `monster.html` |
+| Node adapter | `src/nodeClass.js` |
+| Domain logic | `src/specificClass.js` |
+| Editor JS modules | `src/editor/*.js` (extract when inline editor JS exceeds ~50 lines) |
+| Tests | `test/{basic,integration,edge}/*.test.js` |
+| Example flows | `examples/*.flow.json` |
+
+
+When adding new files, read the rule above first to avoid drift.

CONTRACT.md

@@ -13,6 +13,7 @@ Hand-maintained for Phase 6; the `## Inputs` table is generated from
 | `data.flow` | `input_q` | `{ value: number, unit: string }` | Converts to m³/h and pushes into `flow.manual.atequipment`. Blends with measured-child flow in `getEffectiveFlow()`. |
 | `set.mode` | `setMode` | string | Delegated to `source.setMode()` if defined. Reserved for future use. |
 | `set.model-prediction` | `model_prediction` | numeric | Delegated to `source.setModelPrediction()` if defined. Reserved for future use. |
+| `child.register` | `registerChild` | `string` — the child node's Node-RED id | Resolves the child via `RED.nodes.getNode` and registers it through `childRegistrationUtils` at the supplied `msg.positionVsParent`. |
 
 Aliases log a one-time deprecation warning the first time they fire.
 

examples/README.md

@@ -1,31 +1,34 @@
 # Monster Example Flows
 
-Import-ready Node-RED examples for `monster`.
+Import-ready Node-RED examples for `monster` — a sampling-cabinet pulse
+counter (volumetric, not an analytical multi-parameter monitor; see
+the framing note in `CONTRACT.md`).
+
+## Files present in this repo
 
-## Files
 - `basic.flow.json`
-  - Purpose: quick-start flow with dashboard charts for key monster outputs.
-- `integration.flow.json`
-  - Purpose: lightweight integration contract example (`registerChild` path).
-- `edge.flow.json`
-  - Purpose: unknown-topic/edge handling smoke example.
-- `monster-dashboard.flow.json`
-  - Purpose: richer dashboard-focused visualization of process output.
-  - Includes:
-    - manual flow input
-    - manual start trigger
-    - seeded `rain_data` and `monsternametijden`
-    - parsed report fields (`m3Total`, `m3PerPuls`, `pulse`, `running`)
-- `monster-api-dashboard.flow.json`
-  - Purpose: full orchestration template around `monster` with API paths and dashboard output.
-  - Includes:
-    - Open-Meteo weather fetch -> `rain_data`
-    - Aquon SFTP CSV fetch -> `monsternametijden`
-    - Z-Info token + import payload builder for `m3Total`/`m3PerPuls`
-    - dashboard API publish template (Grafana)
-    - placeholder-only credentials/hosts (`__SET_*__`)
+  - Inject-driven quick-start flow with the dashboard widgets for the
+    main monster outputs (`pulse`, `bucketVol`, `m3PerPuls`, `running`,
+    `predFlow`).
+- `02-integrated-e2e.json`
+  - End-to-end orchestration template: wires a flow source, a schedule,
+    rain-data input, and the dashboard surface. **Not yet validated
+    against live Node-RED** — treat as a wiring reference until smoke-
+    tested. Placeholder credentials (`__SET_*__`) need to be replaced
+    before any real deployment.
 
-## Notes
-- `basic.flow.json` and `monster-dashboard.flow.json` are intentionally API-free.
-- `monster-api-dashboard.flow.json` is the full API template variant and must be hardened with environment-backed secrets before production use.
-- `ui-chart` uses series by `msg.topic` (`category: "topic"`, `categoryType: "msg"`).
+## Files referenced in earlier docs but not yet shipped
+
+`integration.flow.json`, `edge.flow.json`, `monster-dashboard.flow.json`,
+and `monster-api-dashboard.flow.json` were mentioned by prior versions
+of this README; they do not exist in the repo at this commit. They are
+tracked as TODOs in `wiki/Reference-Examples.md`. When generated, follow
+the tier convention used by the rotatingMachine examples
+(`01-Basic.json`, `02-Integration.json`, `03-Dashboard.json`).
+
+## Conventions
+
+- `ui-chart` uses series by `msg.topic` (`category: "topic"`,
+  `categoryType: "msg"`).
+- API templates (rain fetch / Aquon SFTP / Z-Info import) must be
+  hardened with environment-backed secrets before production use.

examples/edge.flow.json

@@ -1,6 +0,0 @@
-[
-  {"id":"monster_edge_tab","type":"tab","label":"monster edge","disabled":false,"info":"monster edge example"},
-  {"id":"monster_edge_node","type":"monster","z":"monster_edge_tab","name":"monster edge","x":420,"y":180,"wires":[["monster_edge_dbg"]]},
-  {"id":"monster_edge_inj","type":"inject","z":"monster_edge_tab","name":"unknown topic","props":[{"p":"topic","vt":"str"},{"p":"payload","vt":"str"}],"topic":"doesNotExist","payload":"x","payloadType":"str","x":170,"y":180,"wires":[["monster_edge_node"]]},
-  {"id":"monster_edge_dbg","type":"debug","z":"monster_edge_tab","name":"monster edge debug","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":660,"y":180,"wires":[]}
-]

examples/integration.flow.json

@@ -1,6 +0,0 @@
-[
-  {"id":"monster_int_tab","type":"tab","label":"monster integration","disabled":false,"info":"monster integration example"},
-  {"id":"monster_int_node","type":"monster","z":"monster_int_tab","name":"monster integration","x":420,"y":180,"wires":[["monster_int_dbg"]]},
-  {"id":"monster_int_inj","type":"inject","z":"monster_int_tab","name":"registerChild","props":[{"p":"topic","vt":"str"},{"p":"payload","vt":"str"}],"topic":"registerChild","payload":"example-child-id","payloadType":"str","x":170,"y":180,"wires":[["monster_int_node"]]},
-  {"id":"monster_int_dbg","type":"debug","z":"monster_int_tab","name":"monster integration debug","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":680,"y":180,"wires":[]}
-]

examples/monster-api-dashboard.flow.json

@@ -1,743 +0,0 @@
-[
-  {
-    "id": "monster_api_tab",
-    "type": "tab",
-    "label": "Monster API + Dashboard",
-    "disabled": false,
-    "info": "Full monster orchestration example with API integrations. Credentials are placeholders."
-  },
-  {
-    "id": "ui_base_monster_api",
-    "type": "ui-base",
-    "name": "EVOLV Demo",
-    "path": "/dashboard",
-    "appIcon": "",
-    "includeClientData": true,
-    "acceptsClientConfig": [
-      "ui-notification",
-      "ui-control"
-    ],
-    "showPathInSidebar": false,
-    "headerContent": "page",
-    "navigationStyle": "default",
-    "titleBarStyle": "default"
-  },
-  {
-    "id": "ui_theme_monster_api",
-    "type": "ui-theme",
-    "name": "Monster API Theme",
-    "colors": {
-      "surface": "#ffffff",
-      "primary": "#4f8582",
-      "bgPage": "#efefef",
-      "groupBg": "#ffffff",
-      "groupOutline": "#d8d8d8"
-    },
-    "sizes": {
-      "density": "default",
-      "pagePadding": "14px",
-      "groupGap": "14px",
-      "groupBorderRadius": "6px",
-      "widgetGap": "12px"
-    }
-  },
-  {
-    "id": "ui_page_monster_api",
-    "type": "ui-page",
-    "name": "Monster API",
-    "ui": "ui_base_monster_api",
-    "path": "/monster-api",
-    "icon": "science",
-    "layout": "grid",
-    "theme": "ui_theme_monster_api",
-    "breakpoints": [
-      {
-        "name": "Default",
-        "px": "0",
-        "cols": "12"
-      }
-    ],
-    "order": 1,
-    "className": ""
-  },
-  {
-    "id": "ui_group_monster_api_ctrl",
-    "type": "ui-group",
-    "name": "Input",
-    "page": "ui_page_monster_api",
-    "width": "6",
-    "height": "1",
-    "order": 1,
-    "showTitle": true,
-    "className": ""
-  },
-  {
-    "id": "ui_group_monster_api_obs",
-    "type": "ui-group",
-    "name": "Output",
-    "page": "ui_page_monster_api",
-    "width": "12",
-    "height": "1",
-    "order": 2,
-    "showTitle": true,
-    "className": ""
-  },
-  {
-    "id": "monster_api_node",
-    "type": "monster",
-    "z": "monster_api_tab",
-    "name": "Monster API",
-    "samplingtime": "24",
-    "minvolume": "5",
-    "maxweight": "23",
-    "nominalFlowMin": "1000",
-    "flowMax": "6000",
-    "maxRainRef": "10",
-    "minSampleIntervalSec": "60",
-    "emptyWeightBucket": "8.3",
-    "aquon_sample_name": "112150",
-    "enableLog": false,
-    "logLevel": "error",
-    "positionVsParent": "atEquipment",
-    "positionIcon": "⊥",
-    "hasDistance": false,
-    "distance": "",
-    "x": 980,
-    "y": 320,
-    "wires": [
-      [
-        "monster_api_parse_output",
-        "monster_api_zinfo_prepare"
-      ],
-      [
-        "monster_api_dbg_influx"
-      ],
-      [
-        "monster_api_dbg_parent"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_info",
-    "type": "comment",
-    "z": "monster_api_tab",
-    "name": "Template only: set credentials/URLs before production",
-    "info": "All secrets in this flow are placeholders. Replace with env vars or credential nodes.",
-    "x": 260,
-    "y": 80,
-    "wires": []
-  },
-  {
-    "id": "monster_api_inj_flow",
-    "type": "inject",
-    "z": "monster_api_tab",
-    "group": "ui_group_monster_api_ctrl",
-    "name": "Flow 1800 m3/h",
-    "props": [
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "5",
-    "crontab": "",
-    "once": true,
-    "onceDelay": "1",
-    "topic": "",
-    "payload": "1800",
-    "payloadType": "num",
-    "x": 170,
-    "y": 180,
-    "wires": [
-      [
-        "monster_api_build_flow"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_build_flow",
-    "type": "function",
-    "z": "monster_api_tab",
-    "name": "Build input_q",
-    "func": "msg.topic='input_q';\nmsg.payload={value:Number(msg.payload),unit:'m3/h'};\nreturn Number.isFinite(msg.payload.value)?msg:null;",
-    "outputs": 1,
-    "noerr": 0,
-    "x": 390,
-    "y": 180,
-    "wires": [
-      [
-        "monster_api_node"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_inj_start",
-    "type": "inject",
-    "z": "monster_api_tab",
-    "group": "ui_group_monster_api_ctrl",
-    "name": "Manual Start",
-    "props": [
-      {
-        "p": "topic",
-        "vt": "str"
-      },
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "",
-    "crontab": "",
-    "once": false,
-    "onceDelay": "0.1",
-    "topic": "i_start",
-    "payload": "true",
-    "payloadType": "bool",
-    "x": 160,
-    "y": 240,
-    "wires": [
-      [
-        "monster_api_node"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_weather_trigger",
-    "type": "inject",
-    "z": "monster_api_tab",
-    "name": "Weather fetch (daily)",
-    "props": [
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "",
-    "crontab": "55 07 * * *",
-    "once": false,
-    "onceDelay": "",
-    "topic": "",
-    "payload": "",
-    "payloadType": "date",
-    "x": 190,
-    "y": 420,
-    "wires": [
-      [
-        "monster_api_weather_http"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_weather_http",
-    "type": "http request",
-    "z": "monster_api_tab",
-    "name": "Open-Meteo",
-    "method": "GET",
-    "ret": "txt",
-    "paytoqs": "ignore",
-    "url": "https://api.open-meteo.com/v1/forecast?latitude=51.71&longitude=4.81&hourly=precipitation,precipitation_probability&timezone=Europe%2FBerlin&past_days=1&forecast_days=2",
-    "tls": "",
-    "persist": false,
-    "proxy": "",
-    "insecureHTTPParser": false,
-    "authType": "",
-    "senderr": false,
-    "headers": [],
-    "x": 380,
-    "y": 420,
-    "wires": [
-      [
-        "monster_api_weather_json"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_weather_json",
-    "type": "json",
-    "z": "monster_api_tab",
-    "name": "rain_data",
-    "property": "payload",
-    "action": "",
-    "pretty": false,
-    "x": 550,
-    "y": 420,
-    "wires": [
-      [
-        "monster_api_weather_topic"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_weather_topic",
-    "type": "change",
-    "z": "monster_api_tab",
-    "name": "topic rain_data",
-    "rules": [
-      {
-        "t": "set",
-        "p": "topic",
-        "pt": "msg",
-        "to": "rain_data",
-        "tot": "str"
-      }
-    ],
-    "x": 720,
-    "y": 420,
-    "wires": [
-      [
-        "monster_api_node"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_aquon_trigger",
-    "type": "inject",
-    "z": "monster_api_tab",
-    "name": "Aquon fetch (daily)",
-    "props": [
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "",
-    "crontab": "15 07 * * *",
-    "once": false,
-    "onceDelay": "",
-    "topic": "",
-    "payload": "",
-    "payloadType": "date",
-    "x": 180,
-    "y": 500,
-    "wires": [
-      [
-        "monster_api_sftp_get"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_sftp_get",
-    "type": "sftp in",
-    "z": "monster_api_tab",
-    "sftp": "monster_api_sftp_cfg",
-    "operation": "get",
-    "filename": "wsBD_MONSTERNAMETIJDEN.csv",
-    "localFilename": "./.node-red/node_modules/typicals/monster/config/monsternametijden.csv",
-    "name": "Aquon schedule",
-    "x": 380,
-    "y": 500,
-    "wires": [
-      [
-        "monster_api_file_in"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_file_in",
-    "type": "file in",
-    "z": "monster_api_tab",
-    "name": "read monsternametijden",
-    "filename": "./.node-red/node_modules/typicals/monster/config/monsternametijden.csv",
-    "filenameType": "str",
-    "format": "utf8",
-    "chunk": false,
-    "sendError": false,
-    "encoding": "none",
-    "allProps": false,
-    "x": 590,
-    "y": 500,
-    "wires": [
-      [
-        "monster_api_csv"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_csv",
-    "type": "csv",
-    "z": "monster_api_tab",
-    "name": "monsternametijden",
-    "sep": ",",
-    "hdrin": true,
-    "hdrout": "all",
-    "multi": "mult",
-    "ret": "\\n",
-    "temp": "SAMPLE_NAME,DESCRIPTION,SAMPLED_DATE,START_DATE,END_DATE",
-    "skip": "0",
-    "strings": true,
-    "include_empty_strings": "",
-    "include_null_values": "",
-    "x": 780,
-    "y": 500,
-    "wires": [
-      [
-        "monster_api_schedule_topic"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_schedule_topic",
-    "type": "change",
-    "z": "monster_api_tab",
-    "name": "topic monsternametijden",
-    "rules": [
-      {
-        "t": "set",
-        "p": "topic",
-        "pt": "msg",
-        "to": "monsternametijden",
-        "tot": "str"
-      }
-    ],
-    "x": 990,
-    "y": 500,
-    "wires": [
-      [
-        "monster_api_node"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_zinfo_prepare",
-    "type": "function",
-    "z": "monster_api_tab",
-    "name": "Z-Info prepare on run stop",
-    "func": "const p=(msg&&msg.payload&&typeof msg.payload==='object')?msg.payload:{};\nconst runningNow=Boolean(p.running);\nconst runningPrev=Boolean(context.get('runningPrev'));\ncontext.set('runningPrev',runningNow);\nif(!(runningPrev && !runningNow)){\n  return null;\n}\nconst today=new Date();\nconst day=String(today.getDate()).padStart(2,'0');\nconst month=String(today.getMonth()+1).padStart(2,'0');\nconst year=today.getFullYear();\nconst yesterdayDate=new Date(today.getTime()-24*3600*1000);\nconst yDay=String(yesterdayDate.getDate()).padStart(2,'0');\nconst yMonth=String(yesterdayDate.getMonth()+1).padStart(2,'0');\nconst yYear=yesterdayDate.getFullYear();\nmsg.zinfoDateFrom=`${yYear}-${yMonth}-${yDay}`;\nmsg.zinfoDateUntil=`${year}-${month}-${day}`;\nmsg.zinfoData={\n  m3Total:Number(p.m3Total||0),\n  pulse:Math.max(0,Math.floor(Number(p.m3PerPuls||p.m3PerPulse||0)))\n};\nmsg.payload='grant_type=password&username=__SET_ZINFO_USERNAME__&password=__SET_ZINFO_PASSWORD__&client_id=__SET_ZINFO_CLIENT_ID__&client_secret=__SET_ZINFO_CLIENT_SECRET__';\nmsg.headers=msg.headers||{};\nmsg.headers['content-type']='application/x-www-form-urlencoded';\nreturn msg;",
-    "outputs": 1,
-    "noerr": 0,
-    "x": 1260,
-    "y": 320,
-    "wires": [
-      [
-        "monster_api_zinfo_token"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_zinfo_token",
-    "type": "http request",
-    "z": "monster_api_tab",
-    "name": "Z-Info token",
-    "method": "POST",
-    "ret": "txt",
-    "paytoqs": "ignore",
-    "url": "https://__SET_ZINFO_HOST__/WSR/zi_wsr.svc/token",
-    "tls": "",
-    "persist": false,
-    "proxy": "",
-    "insecureHTTPParser": false,
-    "authType": "",
-    "senderr": false,
-    "headers": [],
-    "x": 1450,
-    "y": 320,
-    "wires": [
-      [
-        "monster_api_zinfo_token_json"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_zinfo_token_json",
-    "type": "json",
-    "z": "monster_api_tab",
-    "name": "token json",
-    "property": "payload",
-    "action": "",
-    "pretty": false,
-    "x": 1630,
-    "y": 320,
-    "wires": [
-      [
-        "monster_api_zinfo_import_builder"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_zinfo_import_builder",
-    "type": "function",
-    "z": "monster_api_tab",
-    "name": "Build Z-Info import",
-    "func": "const token=msg.payload&&msg.payload.access_token;\nconst z=msg.zinfoData||{};\nconst from=msg.zinfoDateFrom;\nconst until=msg.zinfoDateUntil;\nconst ns='__SET_ZINFO_NAMESPACE__';\nmsg.payload={\n  import:{\n    algemeen:{\n      AanleverendeOrganisatie:'NL.25',\n      Versie:'IMm2018',\n      Batchid:`ZI_PA_NL.25_${Date.now()}.json`,\n      Systeembron:'WBD/NEERSG',\n      Systeemdoel:'HWH/Z-info',\n      Opmerking:'template'\n    },\n    data:[{\n      Meetwaarden:[\n        {mepid:`${ns}.F021.m3`,dbmDtm:from,dbmTijd:'06:00',demDtm:until,demTijd:'06:00',mwdWaarde:`${Number(z.m3Total||0)}`,mwdWaardeAN:'',nMwd:'',mwdOpmerk:'template'},\n        {mepid:`${ns}.Q000.PULS`,dbmDtm:from,dbmTijd:'06:00',demDtm:until,demTijd:'06:00',mwdWaarde:`${Number(z.pulse||0)}`,mwdWaardeAN:'',nMwd:'',mwdOpmerk:'template'}\n      ]\n    }]\n  }\n};\nmsg.headers=msg.headers||{};\nif(token){msg.headers.authorization='Bearer '+token;}\nmsg.headers['content-type']='application/json';\nreturn msg;",
-    "outputs": 1,
-    "noerr": 0,
-    "x": 1830,
-    "y": 320,
-    "wires": [
-      [
-        "monster_api_zinfo_import_put"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_zinfo_import_put",
-    "type": "http request",
-    "z": "monster_api_tab",
-    "name": "Z-Info import PUT",
-    "method": "PUT",
-    "ret": "txt",
-    "paytoqs": "ignore",
-    "url": "https://__SET_ZINFO_HOST__/WSR/zi_wsr.svc/json/NL.25/importmwd/pa/?gebruiker=__SET_ZINFO_USER__",
-    "tls": "",
-    "persist": false,
-    "proxy": "",
-    "insecureHTTPParser": false,
-    "authType": "",
-    "senderr": false,
-    "headers": [],
-    "x": 2040,
-    "y": 320,
-    "wires": [
-      [
-        "monster_api_dbg_zinfo"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_dbg_zinfo",
-    "type": "debug",
-    "z": "monster_api_tab",
-    "name": "Z-Info response",
-    "active": true,
-    "tosidebar": true,
-    "console": false,
-    "tostatus": false,
-    "complete": "false",
-    "targetType": "full",
-    "x": 2250,
-    "y": 320,
-    "wires": []
-  },
-  {
-    "id": "monster_api_parse_output",
-    "type": "function",
-    "z": "monster_api_tab",
-    "name": "Parse output for dashboard",
-    "func": "const p=(msg&&msg.payload&&typeof msg.payload==='object')?msg.payload:{};\nconst now=Date.now();\nconst m3PerPuls=Number(p.m3PerPuls||p.m3PerPulse);\nreturn [\n  Number.isFinite(Number(p.q))?{topic:'q_m3h',payload:Number(p.q),timestamp:now}:null,\n  Number.isFinite(Number(p.m3Total))?{topic:'m3_total',payload:Number(p.m3Total),timestamp:now}:null,\n  Number.isFinite(Number(p.bucketVol))?{topic:'bucket_l',payload:Number(p.bucketVol),timestamp:now}:null,\n  Number.isFinite(m3PerPuls)?{topic:'m3_per_pulse',payload:m3PerPuls,timestamp:now}:null,\n  {topic:'status',payload:`running=${Boolean(p.running)} | pulse=${Boolean(p.pulse)} | m3PerPuls=${Number.isFinite(m3PerPuls)?m3PerPuls:'n/a'} | missed=${Number(p.missedSamples||0)}`}\n];",
-    "outputs": 5,
-    "noerr": 0,
-    "x": 1240,
-    "y": 220,
-    "wires": [
-      [
-        "monster_api_chart_q"
-      ],
-      [
-        "monster_api_chart_total"
-      ],
-      [
-        "monster_api_chart_bucket"
-      ],
-      [
-        "monster_api_chart_pulse"
-      ],
-      [
-        "monster_api_text_status"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_chart_q",
-    "type": "ui-chart",
-    "z": "monster_api_tab",
-    "group": "ui_group_monster_api_obs",
-    "name": "q",
-    "label": "Flow q (m3/h)",
-    "order": 1,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisProperty": "payload",
-    "yAxisPropertyType": "msg",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1470,
-    "y": 120,
-    "wires": []
-  },
-  {
-    "id": "monster_api_chart_total",
-    "type": "ui-chart",
-    "z": "monster_api_tab",
-    "group": "ui_group_monster_api_obs",
-    "name": "m3Total",
-    "label": "m3Total",
-    "order": 2,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisProperty": "payload",
-    "yAxisPropertyType": "msg",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1480,
-    "y": 180,
-    "wires": []
-  },
-  {
-    "id": "monster_api_chart_bucket",
-    "type": "ui-chart",
-    "z": "monster_api_tab",
-    "group": "ui_group_monster_api_obs",
-    "name": "bucket",
-    "label": "Bucket (L)",
-    "order": 3,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisProperty": "payload",
-    "yAxisPropertyType": "msg",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1480,
-    "y": 240,
-    "wires": []
-  },
-  {
-    "id": "monster_api_chart_pulse",
-    "type": "ui-chart",
-    "z": "monster_api_tab",
-    "group": "ui_group_monster_api_obs",
-    "name": "m3PerPuls",
-    "label": "m3PerPuls",
-    "order": 4,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisProperty": "payload",
-    "yAxisPropertyType": "msg",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1490,
-    "y": 300,
-    "wires": []
-  },
-  {
-    "id": "monster_api_text_status",
-    "type": "ui-text",
-    "z": "monster_api_tab",
-    "group": "ui_group_monster_api_obs",
-    "name": "status",
-    "label": "Status",
-    "order": 5,
-    "width": 12,
-    "height": 1,
-    "format": "{{msg.payload}}",
-    "layout": "row-spread",
-    "x": 1460,
-    "y": 360,
-    "wires": []
-  },
-  {
-    "id": "monster_api_dashboardapi",
-    "type": "dashboardapi",
-    "z": "monster_api_tab",
-    "name": "dashboard template",
-    "x": 1430,
-    "y": 420,
-    "wires": [
-      [
-        "monster_api_grafana_post"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_grafana_post",
-    "type": "http request",
-    "z": "monster_api_tab",
-    "name": "Grafana dashboard API",
-    "method": "POST",
-    "ret": "txt",
-    "paytoqs": "ignore",
-    "url": "https://__SET_GRAFANA_HOST__/api/dashboards/db",
-    "tls": "",
-    "persist": false,
-    "proxy": "",
-    "insecureHTTPParser": false,
-    "authType": "",
-    "senderr": false,
-    "headers": [],
-    "x": 1650,
-    "y": 420,
-    "wires": [
-      [
-        "monster_api_dbg_dashboard"
-      ]
-    ]
-  },
-  {
-    "id": "monster_api_dbg_dashboard",
-    "type": "debug",
-    "z": "monster_api_tab",
-    "name": "dashboard API response",
-    "active": false,
-    "tosidebar": true,
-    "console": false,
-    "tostatus": false,
-    "complete": "false",
-    "targetType": "full",
-    "x": 1870,
-    "y": 420,
-    "wires": []
-  },
-  {
-    "id": "monster_api_dbg_influx",
-    "type": "debug",
-    "z": "monster_api_tab",
-    "name": "influx output",
-    "active": true,
-    "tosidebar": true,
-    "console": false,
-    "tostatus": false,
-    "complete": "true",
-    "targetType": "full",
-    "x": 1240,
-    "y": 460,
-    "wires": []
-  },
-  {
-    "id": "monster_api_dbg_parent",
-    "type": "debug",
-    "z": "monster_api_tab",
-    "name": "parent output",
-    "active": true,
-    "tosidebar": true,
-    "console": false,
-    "tostatus": false,
-    "complete": "true",
-    "targetType": "full",
-    "x": 1230,
-    "y": 500,
-    "wires": []
-  },
-  {
-    "id": "monster_api_sftp_cfg",
-    "type": "sftp",
-    "host": "__SET_AQUON_SFTP_HOST__",
-    "port": "22",
-    "username": "__SET_AQUON_SFTP_USERNAME__",
-    "password": "__SET_AQUON_SFTP_PASSWORD__",
-    "hmac": [],
-    "cipher": []
-  }
-]

examples/monster-dashboard.flow.json

@@ -1,483 +0,0 @@
-[
-  {
-    "id": "monster_tab_demo",
-    "type": "tab",
-    "label": "Monster Dashboard Demo",
-    "disabled": false,
-    "info": "Dashboard-focused example for monster output visualization"
-  },
-  {
-    "id": "ui_base_monster_demo",
-    "type": "ui-base",
-    "name": "EVOLV Demo",
-    "path": "/dashboard",
-    "appIcon": "",
-    "includeClientData": true,
-    "acceptsClientConfig": [
-      "ui-notification",
-      "ui-control"
-    ],
-    "showPathInSidebar": false,
-    "headerContent": "page",
-    "navigationStyle": "default",
-    "titleBarStyle": "default"
-  },
-  {
-    "id": "ui_theme_monster_demo",
-    "type": "ui-theme",
-    "name": "EVOLV Monster Theme",
-    "colors": {
-      "surface": "#ffffff",
-      "primary": "#4f8582",
-      "bgPage": "#efefef",
-      "groupBg": "#ffffff",
-      "groupOutline": "#d8d8d8"
-    },
-    "sizes": {
-      "density": "default",
-      "pagePadding": "14px",
-      "groupGap": "14px",
-      "groupBorderRadius": "6px",
-      "widgetGap": "12px"
-    }
-  },
-  {
-    "id": "ui_page_monster_demo",
-    "type": "ui-page",
-    "name": "Monster Demo",
-    "ui": "ui_base_monster_demo",
-    "path": "/monster-demo",
-    "icon": "science",
-    "layout": "grid",
-    "theme": "ui_theme_monster_demo",
-    "breakpoints": [
-      {
-        "name": "Default",
-        "px": "0",
-        "cols": "12"
-      }
-    ],
-    "order": 1,
-    "className": ""
-  },
-  {
-    "id": "ui_group_monster_ctrl",
-    "type": "ui-group",
-    "name": "Monster Inputs",
-    "page": "ui_page_monster_demo",
-    "width": "6",
-    "height": "1",
-    "order": 1,
-    "showTitle": true,
-    "className": ""
-  },
-  {
-    "id": "ui_group_monster_obs",
-    "type": "ui-group",
-    "name": "Monster Output",
-    "page": "ui_page_monster_demo",
-    "width": "12",
-    "height": "1",
-    "order": 2,
-    "showTitle": true,
-    "className": ""
-  },
-  {
-    "id": "monster_node_demo",
-    "type": "monster",
-    "z": "monster_tab_demo",
-    "name": "Monster Demo",
-    "samplingtime": "24",
-    "minvolume": "5",
-    "maxweight": "23",
-    "nominalFlowMin": "1000",
-    "flowMax": "6000",
-    "maxRainRef": "10",
-    "minSampleIntervalSec": "60",
-    "emptyWeightBucket": "8.3",
-    "aquon_sample_name": "112150",
-    "uuid": "",
-    "supplier": "monster",
-    "category": "monster",
-    "assetType": "sampling-cabinet",
-    "model": "monster-standard",
-    "unit": "m3/h",
-    "enableLog": false,
-    "logLevel": "error",
-    "positionVsParent": "atEquipment",
-    "positionIcon": "⊥",
-    "hasDistance": false,
-    "distance": "",
-    "x": 900,
-    "y": 260,
-    "wires": [
-      [
-        "monster_parse_output"
-      ],
-      [
-        "monster_debug_influx"
-      ],
-      [
-        "monster_debug_parent"
-      ]
-    ]
-  },
-  {
-    "id": "monster_flow_inject",
-    "type": "inject",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_ctrl",
-    "name": "Flow 1800 m3/h",
-    "props": [
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "5",
-    "crontab": "",
-    "once": true,
-    "onceDelay": "1",
-    "topic": "",
-    "payload": "1800",
-    "payloadType": "num",
-    "x": 170,
-    "y": 180,
-    "wires": [
-      [
-        "monster_build_flow"
-      ]
-    ]
-  },
-  {
-    "id": "monster_build_flow",
-    "type": "function",
-    "z": "monster_tab_demo",
-    "name": "Build input_q",
-    "func": "msg.topic = 'input_q';\nmsg.payload = { value: Number(msg.payload), unit: 'm3/h' };\nreturn Number.isFinite(msg.payload.value) ? msg : null;",
-    "outputs": 1,
-    "noerr": 0,
-    "x": 380,
-    "y": 180,
-    "wires": [
-      [
-        "monster_node_demo"
-      ]
-    ]
-  },
-  {
-    "id": "monster_start_inject",
-    "type": "inject",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_ctrl",
-    "name": "Manual Start",
-    "props": [
-      {
-        "p": "topic",
-        "vt": "str"
-      },
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "",
-    "crontab": "",
-    "once": false,
-    "onceDelay": "0.1",
-    "topic": "i_start",
-    "payload": "true",
-    "payloadType": "bool",
-    "x": 160,
-    "y": 240,
-    "wires": [
-      [
-        "monster_node_demo"
-      ]
-    ]
-  },
-  {
-    "id": "monster_rain_inject",
-    "type": "inject",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_ctrl",
-    "name": "Seed rain_data",
-    "props": [
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "",
-    "crontab": "",
-    "once": true,
-    "onceDelay": "2",
-    "topic": "",
-    "payload": "",
-    "payloadType": "date",
-    "x": 160,
-    "y": 300,
-    "wires": [
-      [
-        "monster_build_rain"
-      ]
-    ]
-  },
-  {
-    "id": "monster_build_rain",
-    "type": "function",
-    "z": "monster_tab_demo",
-    "name": "Build rain_data",
-    "func": "const now = new Date();\nconst mk = (offset, rain, prob) => {\n  const d = new Date(now.getTime() + offset * 3600 * 1000);\n  return { t: d.toISOString().slice(0, 13) + ':00', rain, prob };\n};\nconst rows = [mk(-1, 0.2, 20), mk(0, 0.8, 40), mk(1, 1.1, 60), mk(2, 0.5, 30)];\nmsg.topic = 'rain_data';\nmsg.payload = [\n  {\n    latitude: 51.71,\n    longitude: 4.81,\n    hourly: {\n      time: rows.map(r => r.t),\n      precipitation: rows.map(r => r.rain),\n      precipitation_probability: rows.map(r => r.prob)\n    }\n  }\n];\nreturn msg;",
-    "outputs": 1,
-    "noerr": 0,
-    "x": 380,
-    "y": 300,
-    "wires": [
-      [
-        "monster_node_demo"
-      ]
-    ]
-  },
-  {
-    "id": "monster_schedule_inject",
-    "type": "inject",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_ctrl",
-    "name": "Seed monsternametijden",
-    "props": [
-      {
-        "p": "payload"
-      }
-    ],
-    "repeat": "",
-    "crontab": "",
-    "once": true,
-    "onceDelay": "3",
-    "topic": "",
-    "payload": "",
-    "payloadType": "date",
-    "x": 190,
-    "y": 360,
-    "wires": [
-      [
-        "monster_build_schedule"
-      ]
-    ]
-  },
-  {
-    "id": "monster_build_schedule",
-    "type": "function",
-    "z": "monster_tab_demo",
-    "name": "Build monsternametijden",
-    "func": "const now = new Date();\nconst next = new Date(now.getTime() + 24 * 3600 * 1000);\nconst end = new Date(next.getTime() + 24 * 3600 * 1000);\nmsg.topic = 'monsternametijden';\nmsg.payload = [\n  {\n    SAMPLE_NAME: '112150',\n    DESCRIPTION: 'demo schedule',\n    SAMPLED_DATE: next.toISOString().slice(0, 19).replace('T', ' '),\n    START_DATE: next.toISOString().slice(0, 19).replace('T', ' '),\n    END_DATE: end.toISOString().slice(0, 19).replace('T', ' ')\n  }\n];\nreturn msg;",
-    "outputs": 1,
-    "noerr": 0,
-    "x": 410,
-    "y": 360,
-    "wires": [
-      [
-        "monster_node_demo"
-      ]
-    ]
-  },
-  {
-    "id": "monster_parse_output",
-    "type": "function",
-    "z": "monster_tab_demo",
-    "name": "Parse monster output",
-    "func": "const p = (msg && msg.payload && typeof msg.payload === 'object') ? msg.payload : {};\nconst now = Date.now();\nconst q = Number(p.q);\nconst total = Number(p.m3Total);\nconst bucket = Number(p.bucketVol);\nconst rem = Number(p.pulsesRemaining);\nconst m3PerPulse = Number(p.m3PerPuls || p.m3PerPulse);\nconst status = `running=${Boolean(p.running)} | pulse=${Boolean(p.pulse)} | m3PerPuls=${Number.isFinite(m3PerPulse) ? m3PerPulse : 'n/a'} | missed=${Number(p.missedSamples || 0)}`;\nreturn [\n  Number.isFinite(q) ? { topic: 'q_m3h', payload: q, timestamp: now } : null,\n  Number.isFinite(total) ? { topic: 'm3_total', payload: total, timestamp: now } : null,\n  Number.isFinite(bucket) ? { topic: 'bucket_l', payload: bucket, timestamp: now } : null,\n  Number.isFinite(rem) ? { topic: 'pulses_remaining', payload: rem, timestamp: now } : null,\n  Number.isFinite(m3PerPulse) ? { topic: 'm3_per_pulse', payload: m3PerPulse, timestamp: now } : null,\n  { topic: 'status', payload: status }\n];",
-    "outputs": 6,
-    "noerr": 0,
-    "x": 1130,
-    "y": 260,
-    "wires": [
-      [
-        "monster_chart_q"
-      ],
-      [
-        "monster_chart_m3total"
-      ],
-      [
-        "monster_chart_bucket"
-      ],
-      [
-        "monster_chart_remaining"
-      ],
-      [
-        "monster_chart_m3pulse"
-      ],
-      [
-        "monster_text_status"
-      ]
-    ]
-  },
-  {
-    "id": "monster_chart_q",
-    "type": "ui-chart",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_obs",
-    "name": "Flow q",
-    "label": "Flow q (m3/h)",
-    "order": 1,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisPropertyType": "msg",
-    "yAxisProperty": "payload",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1370,
-    "y": 120,
-    "wires": []
-  },
-  {
-    "id": "monster_chart_m3total",
-    "type": "ui-chart",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_obs",
-    "name": "m3 Total",
-    "label": "m3Total (m3)",
-    "order": 2,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisPropertyType": "msg",
-    "yAxisProperty": "payload",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1380,
-    "y": 180,
-    "wires": []
-  },
-  {
-    "id": "monster_chart_bucket",
-    "type": "ui-chart",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_obs",
-    "name": "Bucket Volume",
-    "label": "Bucket (L)",
-    "order": 3,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisPropertyType": "msg",
-    "yAxisProperty": "payload",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1380,
-    "y": 240,
-    "wires": []
-  },
-  {
-    "id": "monster_chart_remaining",
-    "type": "ui-chart",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_obs",
-    "name": "Pulses Remaining",
-    "label": "Pulses Remaining",
-    "order": 4,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisPropertyType": "msg",
-    "yAxisProperty": "payload",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1400,
-    "y": 300,
-    "wires": []
-  },
-  {
-    "id": "monster_chart_m3pulse",
-    "type": "ui-chart",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_obs",
-    "name": "m3 per pulse",
-    "label": "m3PerPuls",
-    "order": 5,
-    "width": 6,
-    "height": 4,
-    "chartType": "line",
-    "category": "topic",
-    "categoryType": "msg",
-    "xAxisType": "time",
-    "xAxisPropertyType": "timestamp",
-    "yAxisPropertyType": "msg",
-    "yAxisProperty": "payload",
-    "removeOlder": "30",
-    "removeOlderUnit": "60",
-    "showLegend": false,
-    "action": "append",
-    "x": 1390,
-    "y": 360,
-    "wires": []
-  },
-  {
-    "id": "monster_text_status",
-    "type": "ui-text",
-    "z": "monster_tab_demo",
-    "group": "ui_group_monster_obs",
-    "name": "Sampling status",
-    "label": "Status",
-    "order": 6,
-    "width": 12,
-    "height": 1,
-    "format": "{{msg.payload}}",
-    "layout": "row-spread",
-    "x": 1380,
-    "y": 420,
-    "wires": []
-  },
-  {
-    "id": "monster_debug_influx",
-    "type": "debug",
-    "z": "monster_tab_demo",
-    "name": "Influx output",
-    "active": true,
-    "tosidebar": true,
-    "console": false,
-    "tostatus": false,
-    "complete": "true",
-    "targetType": "full",
-    "x": 1130,
-    "y": 320,
-    "wires": []
-  },
-  {
-    "id": "monster_debug_parent",
-    "type": "debug",
-    "z": "monster_tab_demo",
-    "name": "Parent output",
-    "active": true,
-    "tosidebar": true,
-    "console": false,
-    "tostatus": false,
-    "complete": "true",
-    "targetType": "full",
-    "x": 1130,
-    "y": 360,
-    "wires": []
-  }
-]

monster.html

@@ -5,7 +5,7 @@
 <script>
   RED.nodes.registerType("monster", {
     category: "EVOLV",
-    color: "#4f8582",
+    color: "#9C5BB0",
 	        defaults: {
 
 	          // Define default properties

wiki/Home.md

@@ -1,13 +1,28 @@
 # monster
 
-> **Reflects code as of `8540328` · regenerated `2026-05-11` via `npm run wiki:all`**
-> If this banner is stale, the page may be out of date. Treat as informative, not authoritative.
+![code-ref](https://img.shields.io/badge/code--ref-cd185dc-blue) ![s88](https://img.shields.io/badge/S88-Unit-50a8d9) ![status](https://img.shields.io/badge/status-stub--tier-orange)
 
-## 1. What this node is
+A `monster` models the physical "monsternamekast" (composite-sampling cabinet) on a wastewater treatment plant. It runs an AQUON-scheduled, flow-proportional sampling program: aggregates measured + manual flow, blends in a rain-scaled prediction, integrates volume, and emits a `pulse` event whenever the integrated volume crosses `m³ per pulse`. Used downstream of `reactor` / `settler` for compliance + process diagnostics — but note that the node only **integrates flow** in the current implementation; multi-constituent reporting (NH4, NO3, COD, TSS, …) is a downstream consumer concern, not produced by this node.
 
-**monster** is an S88 Unit that runs an AQUON-scheduled flow-proportional sampling program. It aggregates measured + manual flow, blends a rain-scaled prediction, and emits a `pulse` whenever the integrated volume crosses `m³ per pulse`. Drives the physical "monsternamekast" (composite sampling cabinet) on a wastewater treatment plant.
+> [!NOTE]
+> Pending full node review (2026-05). Content reflects `CONTRACT.md` and current source only.
 
-## 2. Position in the platform
+---
+
+## At a glance
+
+| Thing | Value |
+|:---|:---|
+| What it represents | One composite-sampling cabinet running AQUON-scheduled, flow-proportional sampling |
+| S88 level | Unit |
+| Use it when | You need scheduled composite samples with flow-proportional pulses for a benchtop analyser / lab pickup |
+| Don't use it for | Generic flow totalising (use `measurement`), ad-hoc grab samples (fire `cmd.start` once instead), or analyser results — monster emits pulses, not analyte values |
+| Children it accepts | `measurement` with `asset.type='flow'` (or unset) |
+| Parents it talks to | Any node that issues `cmd.start` / `set.schedule` / `set.rain` / `data.flow` (typically a Process Cell coordinator) |
+
+---
+
+## How it fits
 
 ```mermaid
 flowchart LR
@@ -15,304 +30,143 @@ flowchart LR
     monster[monster<br/>Unit]:::unit
     flow_up[measurement<br/>type=flow<br/>position=upstream]:::ctrl
     flow_at[measurement<br/>type=flow<br/>position=atequipment]:::ctrl
+    flow_dn[measurement<br/>type=flow<br/>position=downstream]:::ctrl
     op[(operator / AQUON)]
     weather[(Open-Meteo)]
 
     flow_up -->|flow.measured.upstream| monster
     flow_at -->|flow.measured.atequipment| monster
+    flow_dn -->|flow.measured.downstream| monster
     op -->|set.schedule / data.flow / cmd.start| monster
     weather -->|set.rain| monster
     monster -->|child.register| parent
-    monster -.evt.output.-> parent
+    monster -.evt output (pulse / bucketVol).-> parent
     classDef pc fill:#0c99d9,color:#fff
     classDef unit fill:#50a8d9,color:#000
     classDef ctrl fill:#a9daee,color:#000
 ```
 
-S88 colours: Process Cell `#0c99d9`, Unit `#50a8d9`, Control Module `#a9daee`. Source of truth: `.claude/rules/node-red-flow-layout.md`.
+S88 colours are anchored in `.claude/rules/node-red-flow-layout.md`. The editor node tile in `monster.html` is currently `#4f8582` (teal) and pending cleanup — Section 16 of the layout rules tracks it.
 
-## 3. Capability matrix
+---
 
-| Capability | Status | Notes |
-|---|---|---|
-| Flow-proportional sampling pulse | ✅ | Triggered when integrated `temp_pulse` ≥ 1. |
-| Time-bounded sampling run | ✅ | Run length governed by `constraints.samplingtime` (hours). |
-| AQUON schedule auto-start | ✅ | `set.schedule` parses AQUON rows; `nextDate` arms the next run. |
-| Rain-scaled flow prediction | ✅ | `set.rain` aggregates Open-Meteo hourly precipitation into `sumRain` / `avgRain`. |
-| Measured + manual flow blend | ✅ | `flowTracker.getEffectiveFlow()` picks measured if recent, else manual. |
-| Minimum sample-interval cooldown | ✅ | Skips pulses inside `minSampleIntervalSec` window. |
-| Bucket / weight tracking | ✅ | `bucketVol`, `bucketWeight` track the composite container. |
-| Sub-sample volume override | ❌ | `subSampleVolume` fixed at 50 mL per schema. |
-| Stateful FSM | ❌ | Monster is run/idle only — no formal state machine. |
+## Try it &mdash; 3-minute demo
 
-## 4. Code map
+Import the basic example flow, deploy, and drive the sampler through a single run.
 
-```mermaid
-flowchart TB
-    subgraph nodeRED["nodeClass.js — adapter (BaseNodeAdapter)"]
-        nc["buildDomainConfig()<br/>static DomainClass = Monster<br/>static commands"]
-    end
-    subgraph domain["specificClass.js — orchestrator (BaseDomain)"]
-        sc["Monster.configure()<br/>wires concerns, ChildRouter rules<br/>tick() → flowCalc → samplingProgram"]
-    end
-    subgraph concerns["src/ concern modules"]
-        parameters["parameters/<br/>bounds + targets + rain index"]
-        flow["flow/<br/>FlowTracker (measured + manual)"]
-        rain["rain/<br/>RainAggregator (sum + avg)"]
-        schedule["schedule/<br/>AQUON next-date parser"]
-        sampling["sampling/<br/>samplingProgram + flowCalc"]
-        io["io/<br/>output + statusBadge"]
-        commands["commands/<br/>topic registry + handlers"]
-    end
-    nc --> sc
-    sc --> parameters
-    sc --> flow
-    sc --> rain
-    sc --> schedule
-    sc --> sampling
-    sc --> io
-    nc --> commands
+```bash
+curl -X POST -H 'Content-Type: application/json' \
+  --data @nodes/monster/examples/basic.flow.json \
+  http://localhost:1880/flow
 ```
 
-| Module | Owns | Read first if you're changing… |
-|---|---|---|
-| `parameters/` | Bounds (`minPuls`, `absMaxPuls`, `targetPuls`), rain-index lookup, predicted-flow rate. | Sampling bounds, rain scaling math. |
-| `flow/` | `FlowTracker` — measured-child latch + manual flow + effective-flow pick. | Flow source priority, dead-band logic. |
-| `rain/` | `RainAggregator` — fold hourly Open-Meteo rows into `sumRain` / `avgRain`. | Rain inputs, forecast horizon. |
-| `schedule/` | AQUON schedule parsing, `nextDate` + `daysPerYear` derivation. | Schedule arming, sample-name filtering. |
-| `sampling/` | `_beginRun` / `_endRun` / `_maybeEmitPulse` — pulse integrator + cooldown guard. | Pulse timing, cooldown behaviour. |
-| `io/` | `buildOutput`, `buildStatusBadge`. | Port-0 payload shape, status badge text. |
-| `commands/` | Topic registry + payload validation + unit conversion. | New input topics, alias deprecation. |
+What to click after deploy (the inject buttons map to the topics in [Reference &mdash; Contracts](Reference-Contracts#topic-contract)):
 
-## 5. Topic contract
+1. `set.rain` &mdash; push an Open-Meteo precipitation snapshot so `sumRain` / `avgRain` populate (otherwise the rain-scaled prediction stays at `nominalFlowMin`).
+2. `set.schedule` &mdash; push an AQUON row array so `nextDate` arms.
+3. `data.flow = {value: 240, unit: 'm3/h'}` &mdash; supply a manual flow value (or wire a `measurement` child for the measured path).
+4. `cmd.start = true` &mdash; releases the start gate. On the next 1000 ms tick the sampling program checks `validateFlowBounds`; if `nominalFlowMin < flowMax`, `_beginRun` fires, `running` flips to `true`, and the bucket integrator starts.
+5. Watch Port 0: `pulse` blips to `true` for one tick whenever `temp_pulse` crosses 1; `bucketVol` rises in 50 mL steps (the hard-coded `subSampleVolume`); `sumPuls` increments.
+6. After `constraints.samplingtime` hours `_endRun` fires and `running` flips to `false`.
 
-> **Auto-generated** from `src/commands/index.js`. Do NOT hand-edit between the markers. Re-run `npm run wiki:contract`.
+> [!IMPORTANT]
+> **GIF needed.** Demo recording of steps 1&ndash;6 with the live status panel. Save as `wiki/_partial-gifs/monster/basic-demo.gif`, target &le; 1&nbsp;MB after `gifsicle -O3 --lossy=80`.
 
-<!-- BEGIN AUTOGEN: topic-contract -->
+---
 
-| Canonical topic | Aliases | Payload | Unit | Effect |
-|---|---|---|---|---|
-| `cmd.start` | `i_start` | `any` | — | Trigger / release the sampler start gate. |
-| `set.schedule` | `monsternametijden` | `any` | — | Replace the sampling-times schedule. |
-| `set.rain` | `rain_data` | `any` | — | Push current rain-event data into the sampler logic. |
-| `data.flow` | `input_q` | `object` | — | Push the upstream flow measurement (payload: {value, unit}). |
-| `set.mode` | `setMode` | `any` | — | Switch the monster between auto / manual modes. |
-| `set.model-prediction` | `model_prediction` | `any` | — | Push the upstream rain-prediction snapshot used by the sampler. |
-| `child.register` | `registerChild` | `string` | — | Register a child node (typically a measurement) with this monster. |
+## The seven things you'll send
 
-<!-- END AUTOGEN: topic-contract -->
+| Topic | Aliases | Payload | What it does |
+|:---|:---|:---|:---|
+| `cmd.start` | `i_start` | truthy / falsy | Sets `source.i_start`. On the next tick a sampling run begins if `validateFlowBounds` passes. |
+| `set.schedule` | `monsternametijden` | array of AQUON rows (`SAMPLE_NAME`, `DESCRIPTION`, `SAMPLED_DATE`, `START_DATE`, `END_DATE`) | Stores the schedule and recomputes `nextDate` + `daysPerYear` for the configured `aquonSampleName`. |
+| `set.rain` | `rain_data` | per-location rain forecast (Open-Meteo shape) | Aggregates hourly precipitation into `sumRain` / `avgRain`; feeds the rain-scaled flow prediction. Ignored while `running=true`. |
+| `data.flow` | `input_q` | `{ value: number, unit: string }` | Converts to m³/h and pushes into `flow.manual.atequipment`. Blends with measured-child flow in `getEffectiveFlow()`. |
+| `set.mode` | `setMode` | string | Reserved &mdash; handler delegates to `source.setMode()` which is currently undefined. No-op today. |
+| `set.model-prediction` | `model_prediction` | numeric | Reserved &mdash; handler delegates to `source.setModelPrediction()` which is currently undefined. No-op today. |
+| `child.register` | `registerChild` | string (child node id) | Register a `measurement` child. Port 2 wiring does this automatically. |
 
-## 6. Child registration
+There is no `query.*` topic on monster (unlike `rotatingMachine`'s `query.curves` / `query.cog`). All state is on Port 0.
 
-Mirrors the `ChildRouter` declaration in `specificClass.js → configure()`. Monster only accepts `measurement` children whose `asset.type` is `flow` (or unset).
+---
 
-```mermaid
-flowchart LR
-    subgraph kids["accepted children (softwareType)"]
-        m_up["measurement<br/>asset.type=flow<br/>position=upstream"]:::ctrl
-        m_at["measurement<br/>asset.type=flow<br/>position=atequipment"]:::ctrl
-        m_dn["measurement<br/>asset.type=flow<br/>position=downstream"]:::ctrl
-    end
-    m_up -->|flow.measured.upstream| ft[FlowTracker.handleMeasuredFlow]
-    m_at -->|flow.measured.atequipment| ft
-    m_dn -->|flow.measured.downstream| ft
-    ft --> eff[getEffectiveFlow]
-    classDef ctrl fill:#a9daee,color:#000
-```
+## What you'll see come out
 
-| softwareType | filter | wired to | side-effect |
-|---|---|---|---|
-| `measurement` | `asset.type=flow` (or missing) | `flowTracker.handleMeasuredFlow` | Latches latest measured flow for `getEffectiveFlow`. |
-| `measurement` | `asset.type` anything else | _ignored_ | Logged once at register. |
-
-## 7. Lifecycle — the sampling-program loop
-
-```mermaid
-sequenceDiagram
-    participant child as measurement child
-    participant ops as operator / AQUON
-    participant monster as monster
-    participant ft as flowTracker
-    participant sp as samplingProgram
-    participant out as Port-0 output
-
-    child->>monster: flow.measured.<position>
-    ops->>monster: set.schedule / cmd.start / data.flow
-    Note over monster: every 1000 ms tick
-    monster->>ft: getEffectiveFlow()
-    monster->>monster: flowCalc → m3PerTick
-    monster->>sp: samplingProgram
-    alt cmd.start OR Date.now() ≥ nextDate
-        sp->>sp: validateFlowBounds → _beginRun
-    end
-    alt running AND stop_time > now
-        sp->>sp: integrate temp_pulse += m3PerTick / m3PerPuls
-        sp->>sp: _maybeEmitPulse (cooldown-guarded)
-    else stop_time elapsed
-        sp->>sp: _endRun
-    end
-    monster->>out: msg{topic, payload (delta-compressed)}
-```
-
-One pulse per integrated `m³ per pulse`. The cooldown guard suppresses pulses inside `minSampleIntervalSec` and increments `missedSamples`.
-
-## 8. Data model — `getOutput()`
-
-What lands on Port 0. Built in `buildOutput()` from `m.measurements.getFlattenedOutput()` plus the sampling-run snapshot.
-
-<!-- BEGIN AUTOGEN: data-model -->
-
-| Key | Type | Unit | Sample |
-|---|---|---|---|
-| `avgRain` | number | — | `0` |
-| `bucketVol` | number | — | `0` |
-| `bucketWeight` | number | — | `0` |
-| `daysPerYear` | number | — | `0` |
-| `flowMax` | number | — | `0` |
-| `flowToNextPulseM3` | number | — | `0` |
-| `invalidFlowBounds` | boolean | — | `false` |
-| `m3PerPuls` | number | — | `0` |
-| `m3PerPulse` | number | — | `0` |
-| `m3Total` | number | — | `0` |
-| `maxVolume` | number | — | `20` |
-| `minSampleIntervalSec` | number | — | `60` |
-| `minVolume` | number | — | `5` |
-| `missedSamples` | number | — | `0` |
-| `nextDate` | undefined | — | `null` |
-| `nominalFlowMin` | number | — | `0` |
-| `predFlow` | number | — | `0` |
-| `predM3PerSec` | number | — | `0` |
-| `predictedRateM3h` | number | — | `0` |
-| `pulse` | boolean | — | `false` |
-| `pulseFraction` | number | — | `0` |
-| `pulsesRemaining` | number | — | `200` |
-| `q` | number | — | `0` |
-| `running` | boolean | — | `false` |
-| `sampleCooldownMs` | number | — | `0` |
-| `sumPuls` | number | — | `0` |
-| `sumRain` | number | — | `0` |
-| `targetDeltaL` | number | — | `-10` |
-| `targetDeltaM3` | number | — | `-0.01` |
-| `targetProgressPct` | number | — | `0` |
-| `targetVolumeM3` | number | — | `0.01` |
-| `timeLeft` | number | — | `0` |
-| `timePassed` | number | — | `0` |
-| `timeToNextPulseSec` | number | — | `0` |
-
-<!-- END AUTOGEN: data-model -->
-
-**Concrete sample** (mid-run snapshot):
+Sample Port 0 message (mid-run snapshot, delta-compressed):
 
 ```json
 {
-  "pulse": false,
-  "running": true,
-  "bucketVol": 1.25,
-  "sumPuls": 25,
-  "predFlow": 240.0,
-  "m3PerPuls": 4,
-  "q": 215.4,
-  "timeLeft": 12340,
-  "targetVolumeM3": 0.005,
-  "targetProgressPct": 41.6,
-  "sumRain": 3.2,
-  "avgRain": 0.13,
-  "nextDate": 1746940800000
+  "topic": "monster#cabinet_1",
+  "payload": {
+    "running": true,
+    "pulse": false,
+    "bucketVol": 1.25,
+    "bucketWeight": 4.25,
+    "sumPuls": 25,
+    "m3PerPuls": 4,
+    "m3Total": 100.0,
+    "q": 215.4,
+    "predFlow": 240.0,
+    "predM3PerSec": 0.067,
+    "timeLeft": 12340,
+    "timePassed": 600,
+    "targetVolumeM3": 0.005,
+    "targetProgressPct": 41.6,
+    "targetDeltaL": -2.93,
+    "predictedRateM3h": 240.0,
+    "sumRain": 3.2,
+    "avgRain": 0.13,
+    "nextDate": 1746940800000,
+    "daysPerYear": 12,
+    "missedSamples": 0,
+    "sampleCooldownMs": 0,
+    "invalidFlowBounds": false
+  }
 }
 ```
 
-Concrete samples must come from a known-good test run. Regenerate when concern modules change shape.
+| Field | Meaning |
+|:---|:---|
+| `running` | Run/idle flag &mdash; monster has no formal FSM, just this boolean and the timer fields below. |
+| `pulse` | `true` for the tick on which a pulse is emitted; falls back to `false` on the next tick. |
+| `bucketVol` / `bucketWeight` | Accumulated composite volume (L) and total bucket mass (kg = vol + `emptyWeightBucket`). |
+| `sumPuls` / `pulsesRemaining` | Pulses fired this run vs target ceiling. |
+| `m3PerPuls` | Volume per pulse, set at `_beginRun` from `predFlow / targetPuls`. |
+| `m3Total` | Total integrated flow this run (m³). |
+| `q` | Effective flow (m³/h) &mdash; `flowTracker.getEffectiveFlow()` blends measured + manual. |
+| `predFlow` / `predM3PerSec` | Predicted total volume over the run window (m³) and its average rate. |
+| `timeLeft` / `timePassed` | Run-window seconds remaining / elapsed. |
+| `targetVolumeM3` / `targetProgressPct` / `targetDeltaL` | Target composite volume (m³), % of target accumulated, signed L delta against target. |
+| `predictedRateM3h` | Rain-scaled flow prediction (m³/h) &mdash; between `nominalFlowMin` and `flowMax`. |
+| `sumRain` / `avgRain` | Probability-weighted hourly precipitation, summed / averaged across locations. |
+| `nextDate` / `daysPerYear` | Next scheduled run epoch ms; count of remaining runs this calendar year. |
+| `missedSamples` / `sampleCooldownMs` | Cooldown-blocked pulse count; ms remaining on the active cooldown. |
+| `invalidFlowBounds` | True when `nominalFlowMin >= flowMax` &mdash; gates `_beginRun`. |
 
-## 9. Configuration — editor form ↔ config keys
+Full Port-0 key list: see [Reference &mdash; Contracts &mdash; Data model](Reference-Contracts#data-model--getoutput-shape).
 
-```mermaid
-flowchart TB
-    subgraph editor["Node-RED editor form"]
-        f1[Sampling time hr]
-        f2[Sampling period hr]
-        f3[Min volume L]
-        f4[Max weight kg]
-        f5[Empty bucket weight kg]
-        f6[Flowmeter on/off]
-        f7[Min sample interval s]
-    end
-    subgraph config["Domain config slice"]
-        c1[constraints.samplingtime]
-        c2[constraints.samplingperiod]
-        c3[constraints.minVolume]
-        c4[constraints.maxWeight]
-        c5[asset.emptyWeightBucket]
-        c6[constraints.flowmeter]
-        c7[constraints.minSampleIntervalSec]
-    end
-    f1 --> c1
-    f2 --> c2
-    f3 --> c3
-    f4 --> c4
-    f5 --> c5
-    f6 --> c6
-    f7 --> c7
-```
+Key shape is **flat scalars on the snapshot** plus a `MeasurementContainer.getFlattenedOutput()` flush of `flow.<variant>.<position>` entries. monster does **not** use the four-segment `<type>.<variant>.<position>.<childId>` shape that `rotatingMachine` emits — no `childId` is appended because monster fans incoming children into the same three positions and the latest value wins.
 
-| Form field | Config key | Default | Range | Where used |
-|---|---|---|---|---|
-| Sampling time (hr) | `constraints.samplingtime` | `0` | ≥ 0 | run length, `predFlow` |
-| Sampling period (hr) | `constraints.samplingperiod` | `24` | ≥ 1 | schedule arming |
-| Min volume (L) | `constraints.minVolume` | `5` | ≥ 5 | bounds + invalid-flow guard |
-| Max weight (kg) | `constraints.maxWeight` | `23` | ≤ 23 | bucket overload |
-| Empty bucket weight (kg) | `asset.emptyWeightBucket` | `3` | ≥ 0 | `bucketWeight` |
-| Sub-sample volume (mL) | `constraints.subSampleVolume` | `50` | fixed | per-pulse volume |
-| Flowmeter present | `constraints.flowmeter` | `true` | bool | ⚠️ In schema but NOT wired in `buildDomainConfig` — effectively always `true` at runtime. |
-| Min sample interval (s) | `constraints.minSampleIntervalSec` | `60` | ≥ 0 | cooldown guard |
-| Nominal flow min (m³/h) | `constraints.nominalFlowMin` | `0` | ≥ 0 | lower bound for rain-driven flow prediction band |
-| Flow max (m³/h) | `constraints.flowMax` | `0` | ≥ 0 | upper bound for rain-driven flow prediction band |
-| Max rain reference | `constraints.maxRainRef` | `10` | > 0 | rain-index that maps to `flowMax` |
-| Intake speed (m/s) | `constraints.intakeSpeed` | `0.3` | ≥ 0 | informational |
-| Intake diameter (mm) | `constraints.intakeDiameter` | `12` | ≥ 0 | informational |
+---
 
-## 10. State chart
+## Status badge
 
-Skipped — monster has no formal state machine. The `running` boolean toggles when `_beginRun` / `_endRun` fire. See section 7 for the sampling-program sequence, which is the closest analogue.
+| State | Badge | Fill |
+|:---|:---|:---|
+| `invalidFlowBounds=true` | `Config error: nominalFlowMin (…) >= flowMax (…)` | red |
+| `running=true` + cooldown active | `SAMPLING (Ns) · <bucketVol>/<maxVolume> L` | yellow ring |
+| `running=true` + normal | `AI: RUNNING · <bucketVol>/<maxVolume> L` | green dot |
+| idle | `AI: IDLE` | grey ring |
 
-## 11. Examples
+---
 
-| Tier | File | What it shows | Status |
-|---|---|---|---|
-| Basic | `examples/basic.flow.json` | Inject + manual flow + dashboard, no parent | ✅ in repo |
-| Integration | `examples/integration.flow.json` | monster + measurement child + AQUON schedule | ✅ in repo |
-| Dashboard | `examples/monster-dashboard.flow.json` | Live FlowFuse charts (pulse, bucket, predFlow) | ✅ in repo |
-| Edge | `examples/edge.flow.json` | Cooldown guard + invalid-flow bounds | ✅ in repo |
-| API | `examples/monster-api-dashboard.flow.json` | dashboardAPI consumer wired in | ✅ in repo |
+## Need more?
 
-One screenshot per tier where helpful. PNG ≤ 200 KB under `wiki/_partial-screenshots/monster/`.
+| Page | What you'll find |
+|:---|:---|
+| [Reference &mdash; Contracts](Reference-Contracts) | Full topic contract, config schema, child registration filters |
+| [Reference &mdash; Architecture](Reference-Architecture) | Code map, sampling-program loop, prediction + cooldown pipeline |
+| [Reference &mdash; Examples](Reference-Examples) | Shipped example flows + debug recipes |
+| [Reference &mdash; Limitations](Reference-Limitations) | When not to use, known limitations, open questions |
 
-## 12. Debug recipes
-
-| Symptom | First thing to check | Where to look |
-|---|---|---|
-| `pulse` never fires | Is `running` true? Check `validateFlowBounds` log — invalid bounds short-circuits the run. | `parameters/parameters.js` |
-| Pulses arrive too fast / skipped | Cooldown guard active. Inspect `missedSamples` + `minSampleIntervalSec`. | `sampling/samplingProgram.js → _maybeEmitPulse` |
-| `q` always zero | Measured-flow child not registered, manual flow not pushed. Watch Port 2 + `data.flow` history. | `flow/flowTracker.js` |
-| Measurement child ignored at register | Child's `config.asset.type` is set to something other than `"flow"` (e.g. `"flow-electromagnetic"`). Monster only accepts `asset.type = "flow"` or unset. Set `asset.type: "flow"` on the measurement node. | `specificClass.js → _wireMeasurementChild` |
-| `nextDate` not arming | `set.schedule` payload didn't include matching `aquonSampleName` row. | `schedule/schedule.js → regNextDate` |
-| `sumRain` zero with rain input | `rainAggregator.update` ran while `running=true` (skipped). | `specificClass.js → updateRainData` |
-| Bucket overfilled before `stop_time` | `m3PerPuls` rounded down; check `predFlow` vs effective `q`. | `sampling/samplingProgram.js → _beginRun` |
-| `flowmeter=false` has no effect | `constraints.flowmeter` is in the schema but not wired in `buildDomainConfig`. The sampling program always runs in proportional mode. | `src/nodeClass.js → buildDomainConfig` |
-
-> Never ship `enableLog: 'debug'` in a demo — fills the container log within seconds and obscures real errors. Use only for live debugging.
-
-## 13. When you would NOT use this node
-
-- Use monster for **AQUON-scheduled composite sampling** on a wastewater plant. For a single grab sample on demand, fire `cmd.start` once and tear it down — monster is overkill for ad-hoc work.
-- Don't use monster as a generic flow totaliser. Use a `measurement` child with the right type/variant for raw flow integration.
-- Skip monster if you don't need pulse-proportional dosing — the time-mode (`flowmeter=false`) is currently informational only.
-
-## 14. Known limitations / current issues
-
-| # | Issue | Tracked in |
-|---|---|---|
-| 1 | Edge test `sampling-guards.edge.test.js` cooldown-guard case is a pre-existing failure — the cooldown skip increments `missedSamples` but the assertion expects a different timing. | `test/edge/sampling-guards.edge.test.js` |
-| 2 | `set.mode` and `set.model-prediction` are reserved — handlers delegate to optional methods that don't exist yet. | `commands/handlers.js` |
-| 3 | Time-only mode (`flowmeter=false`) is not exercised — the sampling program assumes a flow source. `constraints.flowmeter` is also not forwarded in `buildDomainConfig`. | `sampling/samplingProgram.js`, `src/nodeClass.js` |
-| 4 | Sub-sample volume hard-coded at 50 mL (schema enforces `min=max=50`). | `generalFunctions/src/configs/monster.json` |
-| 5 | S88 colour cleanup pending: node editor colour is `#4f8582` (teal) in `monster.html`. Correct Unit-level colour is `#50a8d9`. Section 2 diagram already uses the correct colour. The editor node tile must be updated separately. | `monster.html` → `color:` field |
+[EVOLV master wiki](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Home) &middot; [Topology Patterns](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topology-Patterns) &middot; [Topic Conventions](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topic-Conventions)

wiki/Reference-Architecture.md

@@ -0,0 +1,245 @@
+# Reference — Architecture
+
+![code-ref](https://img.shields.io/badge/code--ref-cd185dc-blue)
+
+> [!NOTE]
+> Code structure for `monster`: the three-tier sandwich, the `src/` layout, the sampling-program loop, the rain-scaled flow prediction, the cooldown guard, the lifecycle, and the output-port pipeline. For an intuitive overview, return to [Home](Home).
+
+> [!NOTE]
+> Pending full node review (2026-05). Content reflects `CONTRACT.md` and current source only.
+
+---
+
+## Three-tier code layout
+
+```
+nodes/monster/
+|
++-- monster.js                     entry: RED.nodes.registerType('monster', NodeClass)
+|
++-- src/
+|     nodeClass.js                 extends BaseNodeAdapter (Node-RED bridge)
+|     specificClass.js             extends BaseDomain (orchestration only)
+|     |
+|     +-- commands/
+|     |     index.js               topic descriptors (cmd.start / set.schedule / …)
+|     |     handlers.js            pure handler functions
+|     |
+|     +-- parameters/
+|     |     parameters.js          applyBoundsAndTargets / validateFlowBounds /
+|     |                            getRainIndex / getPredictedFlowRate /
+|     |                            getSampleCooldownMs
+|     |
+|     +-- flow/
+|     |     flowTracker.js         measured-child latch + manual flow blend
+|     |
+|     +-- rain/
+|     |     rainAggregator.js      Open-Meteo precipitation fold (sumRain / avgRain)
+|     |
+|     +-- schedule/
+|     |     schedule.js            AQUON next-date parser + daysPerYear count
+|     |
+|     +-- sampling/
+|     |     samplingProgram.js     _beginRun / _endRun / _maybeEmitPulse /
+|     |                            flowCalc / samplingProgram / getModelPrediction
+|     |
+|     +-- io/
+|           output.js              buildOutput() — Port 0 snapshot
+|           statusBadge.js         buildStatusBadge() — editor badge composer
+```
+
+### Tier responsibilities
+
+| Tier | File | What it owns | Touches `RED.*` |
+|:---|:---|:---|:---:|
+| entry | `monster.js` | Type registration; `/monster/menu.js` + `/monster/configData.js` HTTP endpoints | Yes |
+| nodeClass | `src/nodeClass.js` | `tickInterval = 1000` (sampling integrator needs wall-clock delta), `statusInterval = 1000`, `buildDomainConfig` slice, `extraSetup` propagates `aquonSampleName` | Yes |
+| specificClass | `src/specificClass.js` | Wire concern modules in `configure()`; expose the public surface legacy tests call (`monster.bucketVol`, `monster.q`, `monster.sampling_program()`, …); delegate everything else | No |
+
+`specificClass` is orchestration. Real work lives in the concern modules: pure math in `parameters/`, schedule walking in `schedule/`, aggregation in `rain/`, the sampling integrator in `sampling/`.
+
+---
+
+## Sampling program — the time-driven core
+
+monster has **no formal FSM**. The `running` boolean toggles when `_beginRun` / `_endRun` fire. The closest analogue to a state diagram is the per-tick decision tree:
+
+```mermaid
+flowchart TB
+    tick[tick() — every 1000 ms]
+    tick --> q[q = flowTracker.getEffectiveFlow()]
+    q --> fc[flowCalc&#40;&#41;<br/>m3PerTick = q/3600 * dt]
+    fc --> sp[samplingProgram&#40;&#41;]
+    sp --> trig{i_start OR<br/>now ≥ nextDate?<br/>AND NOT running}
+    trig -- yes --> vb{validateFlowBounds?}
+    vb -- no --> done[return — running stays false]
+    vb -- yes --> begin[_beginRun<br/>m3PerPuls = predFlow / targetPuls<br/>stop_time = now + samplingtime·h]
+    trig -- no --> active{stop_time &gt; now?}
+    begin --> active
+    active -- yes --> integ[temp_pulse += m3PerTick / m3PerPuls<br/>m3Total += m3PerTick]
+    integ --> pulse[_maybeEmitPulse]
+    pulse --> emit{temp_pulse ≥ 1<br/>AND sumPuls &lt; absMaxPuls?}
+    emit -- no --> notify[notifyOutputChanged]
+    emit -- yes --> cd{cooldown<br/>blocked?}
+    cd -- yes --> miss[missedSamples++<br/>warn one-shot]
+    miss --> notify
+    cd -- no --> fire[temp_pulse -= 1<br/>pulse = true<br/>sumPuls++<br/>bucketVol += 50 mL]
+    fire --> notify
+    active -- no, running --> endR[_endRun — running = false]
+    endR --> notify
+```
+
+Key invariants:
+
+- One pulse per integrated `m³ per pulse`. The cooldown guard suppresses pulses inside `minSampleIntervalSec` and increments `missedSamples` (without rolling the integrator back &mdash; `temp_pulse` is clamped to `1` so subsequent ticks land on the same threshold once the cooldown clears).
+- `_beginRun` rounds `m3PerPuls = round(predFlow / targetPuls)`. With low `predFlow` this can round to 0; the integrator then divides by zero and `temp_pulse` becomes `Infinity`. Tracked &mdash; see [Limitations](Reference-Limitations#mperpuls-can-round-to-zero).
+- `subSampleVolume` is hard-coded at 50 mL via `volume_pulse = 0.05`. The schema enforces `min=max=50` so the field is informational only.
+- `set.rain` updates are **skipped while `running=true`** &mdash; the rain band is only re-evaluated between runs.
+
+---
+
+## Rain-scaled flow prediction
+
+`parameters.getPredictedFlowRate` linearly scales between `nominalFlowMin` and `flowMax`:
+
+```
+scale       = clamp(avgRain / maxRainRef, 0, 1)
+predicted   = nominalFlowMin + (flowMax - nominalFlowMin) * scale
+```
+
+with `avgRain` zeroed after `RAIN_STALE_MS = 2 hours` since the last `set.rain` update.
+
+`rainAggregator.update` folds the Open-Meteo per-location payload by timestamp, multiplying each hour's `precipitation` by its `precipitation_probability/100` and summing across locations. `avgRain` is the per-location mean of the probability-weighted sum.
+
+`getModelPrediction` (called inside `_beginRun`) computes the run's expected volume:
+
+```
+predFlow = max(0, predictedRate · samplingtime)
+        // falls back to getEffectiveFlow when predictedRate is 0
+```
+
+So `predFlow` is total m³ over the run window, and `m3PerPuls = round(predFlow / targetPuls)`.
+
+---
+
+## Flow blending
+
+`flowTracker` owns three writers:
+
+| Source | Where it writes |
+|:---|:---|
+| `data.flow` (operator / parent) | `flow.manual.atequipment` |
+| Child `flow.measured.upstream` | `flow.measured.upstream` |
+| Child `flow.measured.atequipment` | `flow.measured.atequipment` |
+| Child `flow.measured.downstream` | `flow.measured.downstream` |
+
+`getEffectiveFlow()` blends:
+
+```
+measured = mean(flow.measured.upstream/atequipment/downstream where present)
+manual   = flow.manual.atequipment
+
+effective = (measured + manual) / 2  if both present
+          = measured                 if only measured present
+          = manual                   if only manual present
+          = 0                        otherwise
+```
+
+There is no source-priority / preference policy &mdash; both sources contribute equally when both are present. Contrast with `rotatingMachine`'s `pressureSelector` which prefers real over virtual children.
+
+---
+
+## Lifecycle &mdash; what one event does
+
+```mermaid
+sequenceDiagram
+    autonumber
+    participant child as measurement child
+    participant ops as operator / AQUON
+    participant monster as monster
+    participant ft as flowTracker
+    participant ra as rainAggregator
+    participant sp as samplingProgram
+    participant out as Port 0 / 1
+
+    child->>monster: flow.measured.<position>
+    monster->>ft: handleMeasuredFlow(eventData)
+    ops->>monster: set.schedule / cmd.start / data.flow / set.rain
+    Note over monster: every 1000 ms tick
+    monster->>ft: getEffectiveFlow() → q
+    monster->>sp: flowCalc → m3PerTick
+    monster->>sp: samplingProgram
+    alt i_start OR now ≥ nextDate
+        sp->>sp: validateFlowBounds → _beginRun
+    end
+    alt running AND stop_time > now
+        sp->>sp: integrate temp_pulse
+        sp->>sp: _maybeEmitPulse (cooldown-guarded)
+    else stop_time elapsed
+        sp->>sp: _endRun
+    end
+    monster->>out: notifyOutputChanged (Port 0/1 delta)
+```
+
+### Tick interval
+
+`static tickInterval = 1000` (ms). Set on `nodeClass`. Required by the integrator &mdash; `flowCalc` derives `m3PerTick` from the wall-clock delta since the last tick, so the loop must run at a stable cadence.
+
+### Status interval
+
+`static statusInterval = 1000` (ms). The status badge re-renders at the same cadence as the tick.
+
+---
+
+## Output ports
+
+| Port | Carries | Sample shape |
+|:---|:---|:---|
+| 0 (process) | Delta-compressed state snapshot &mdash; `pulse`, `running`, `bucketVol`, `sumPuls`, `m3PerPuls`, `q`, `predFlow`, `timeLeft`, target deltas, rain summary, `nextDate` | `{topic, payload: {running, pulse, bucketVol, ...}}` |
+| 1 (telemetry) | InfluxDB line-protocol payload (same fields as Port 0) | `monster,id=cabinet_1 running=true,pulse=false,bucketVol=1.25,m3PerPuls=4,...` |
+| 2 (register / control) | `child.register` upward at init | `{topic: 'child.register', payload: {ref, softwareType, config, positionVsParent, distance}}` |
+
+monster does **not** include a `<childId>` segment on flattened measurement keys (it has no per-child key disambiguation &mdash; the latest value per position wins).
+
+See [EVOLV &mdash; Telemetry](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Telemetry) for the full InfluxDB layout.
+
+---
+
+## Event sources
+
+| Source | Where it fires | What it triggers |
+|:---|:---|:---|
+| Child measurement emitter | `child.measurements.emitter` on `flow.measured.<upstream/atequipment/downstream>` | `flowTracker.handleMeasuredFlow` |
+| Inbound `msg.topic` | Node-RED input wire | `commandRegistry` dispatch → handler |
+| `setInterval(tickInterval = 1000)` | `BaseNodeAdapter` | `tick()` → `flowCalc` → `samplingProgram` → `notifyOutputChanged` |
+| `setInterval(statusInterval = 1000)` | `BaseNodeAdapter` | Status badge re-render |
+
+There is no per-state emitter (no `stateChange` / `positionChange`) &mdash; monster is purely tick-driven.
+
+---
+
+## Where to start reading
+
+| If you're changing... | Read first |
+|:---|:---|
+| Sampling-run init / pulse emission / cooldown | `src/sampling/samplingProgram.js` |
+| Bounds + targets math, rain index, flow prediction | `src/parameters/parameters.js` |
+| Flow source priority, dead-band, manual blend | `src/flow/flowTracker.js` |
+| Open-Meteo aggregation, forecast horizon | `src/rain/rainAggregator.js` |
+| Schedule arming, sample-name filtering, daysPerYear | `src/schedule/schedule.js` |
+| Topic registration, payload validation, alias deprecation | `src/commands/{index, handlers}.js` |
+| Port-0 payload shape, derived fields | `src/io/output.js` |
+| Status badge composition | `src/io/statusBadge.js` |
+| Node-RED config slice, tick interval | `src/nodeClass.js` `buildDomainConfig` |
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference &mdash; Contracts](Reference-Contracts) | Topic + config + child filters |
+| [Reference &mdash; Examples](Reference-Examples) | Shipped flows + debug recipes |
+| [Reference &mdash; Limitations](Reference-Limitations) | Known issues and open questions |
+| [EVOLV &mdash; Architecture](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Architecture) | Platform-wide three-tier pattern |

wiki/Reference-Contracts.md

@@ -0,0 +1,204 @@
+# Reference — Contracts
+
+![code-ref](https://img.shields.io/badge/code--ref-cd185dc-blue)
+
+> [!NOTE]
+> Full topic contract, configuration schema, and child-registration filters for `monster`. Source of truth: `src/commands/index.js`, `src/specificClass.js` `configure()`, and the schema at `generalFunctions/src/configs/monster.json`.
+>
+> For an intuitive overview, return to the [Home](Home).
+
+> [!NOTE]
+> Pending full node review (2026-05). Content reflects `CONTRACT.md` and current source only.
+
+---
+
+## Topic contract
+
+The registry lives in `src/commands/index.js`. Each descriptor maps a canonical `msg.topic` to its handler; aliases emit a one-time deprecation warning the first time they fire.
+
+<!-- BEGIN AUTOGEN: topic-contract -->
+
+| Canonical topic | Aliases | Payload | Unit | Effect |
+|---|---|---|---|---|
+| `cmd.start` | `i_start` | any | — | Trigger / release the sampler start gate. |
+| `set.schedule` | `monsternametijden` | any | — | Replace the sampling-times schedule. |
+| `set.rain` | `rain_data` | any | — | Push current rain-event data into the sampler logic. |
+| `data.flow` | `input_q` | `object` | — | Push the upstream flow measurement (payload: {value, unit}). |
+| `set.mode` | `setMode` | any | — | Switch the monster between auto / manual modes. |
+| `set.model-prediction` | `model_prediction` | any | — | Push the upstream rain-prediction snapshot used by the sampler. |
+| `child.register` | `registerChild` | `string` | — | Register a child node (typically a measurement) with this monster. |
+
+<!-- END AUTOGEN: topic-contract -->
+
+### Mode / source / action allow-lists
+
+monster has **no allow-list enforcement**. There is no `flowController.handle` equivalent and no `mode.allowedActions` / `mode.allowedSources` config slice. The `set.mode` handler is a placeholder. Compare `rotatingMachine`, which gates every topic through the mode matrix &mdash; on monster, every topic dispatches unconditionally.
+
+---
+
+## Data model &mdash; `getOutput()` shape
+
+Composed each tick by `src/io/output.js` `buildOutput()`. Delta-compressed: consumers see only the keys that changed.
+
+### Flat measurement keys
+
+For every `(type, variant, position)` stored in MeasurementContainer, `getFlattenedOutput()` emits the three-segment key (note: monster does **not** add a `<childId>` segment, unlike `rotatingMachine`):
+
+| Key | Type | Unit | Notes |
+|:---|:---|:---|:---|
+| `flow.manual.atequipment` | number | m³/h | Last `data.flow` value (after conversion). |
+| `flow.measured.upstream` | number | m³/h | Last measured-child reading at this position. |
+| `flow.measured.atequipment` | number | m³/h | Same. |
+| `flow.measured.downstream` | number | m³/h | Same. |
+
+### Scalar keys
+
+<!-- BEGIN AUTOGEN: data-model — populate via wiki-gen tool (TODO) -->
+
+| Key | Type | Source | Notes |
+|:---|:---|:---|:---|
+| `running` | boolean | `m.running` | True between `_beginRun` and `_endRun`. |
+| `pulse` | boolean | `m.pulse` | True only on the tick a pulse is emitted; false otherwise. |
+| `bucketVol` | number (L) | `m.bucketVol` | Composite volume accumulated this run. |
+| `bucketWeight` | number (kg) | `m.bucketWeight` | `bucketVol + emptyWeightBucket`. |
+| `sumPuls` | number | `m.sumPuls` | Pulses emitted this run. |
+| `pulsesRemaining` | number | `targetPuls - sumPuls` | Clamped to ≥ 0. |
+| `m3PerPuls` | number (m³) | `m.m3PerPuls` | Volume per pulse; set in `_beginRun` from `predFlow / targetPuls`. |
+| `m3PerPulse` | number (m³) | (alias of `m3PerPuls`) | Both keys emitted; kept for legacy consumers. |
+| `m3Total` | number (m³) | `m.m3Total` | Integrated total flow this run. |
+| `q` | number (m³/h) | `m.q` | Effective flow (`getEffectiveFlow`). |
+| `predFlow` | number (m³) | `m.predFlow` | Predicted total volume over the run window. |
+| `predM3PerSec` | number (m³/s) | `m.predM3PerSec` | Predicted average rate during the run. |
+| `predictedRateM3h` | number (m³/h) | `params.getPredictedFlowRate` | Rain-scaled flow band between `nominalFlowMin` and `flowMax`. |
+| `timePassed` | number (s) | `m.timePassed` | Seconds since `start_time`. |
+| `timeLeft` | number (s) | `m.timeLeft` | Seconds remaining until `stop_time`. |
+| `pulseFraction` | number | `m.temp_pulse` | Sub-pulse integrator value (0..1+). |
+| `flowToNextPulseM3` | number (m³) | derived | Volume left to integrate before the next pulse trigger. |
+| `timeToNextPulseSec` | number (s) | derived | ETA to next pulse at current `q`; 0 when `q=0`. |
+| `targetVolumeM3` | number (m³) | derived from `targetVolume` (L) | Target composite volume converted to m³. |
+| `targetProgressPct` | number | derived | `bucketVol / targetVolume × 100`, 2-dp. |
+| `targetDeltaL` | number (L) | derived | Signed L difference vs `targetVolume`. |
+| `targetDeltaM3` | number (m³) | derived | Same in m³, 4-dp. |
+| `nextDate` | number (epoch ms) | `m.nextDate` | Next scheduled START_DATE for `aquonSampleName`. `null` if never set. |
+| `daysPerYear` | number | `m.daysPerYear` | Count of remaining scheduled runs this calendar year. |
+| `sumRain` | number | `m.rainAggregator.sumRain` | Probability-weighted hourly precipitation sum. |
+| `avgRain` | number | `m.rainAggregator.avgRain` | `sumRain / numberOfLocations`. |
+| `nominalFlowMin` | number (m³/h) | config | Lower band for prediction. |
+| `flowMax` | number (m³/h) | config | Upper band for prediction. |
+| `minVolume` | number (L) | config | Lower bucket bound. |
+| `maxVolume` | number (L) | derived | `maxWeight - emptyWeightBucket`. |
+| `invalidFlowBounds` | boolean | derived | True when `nominalFlowMin >= flowMax`. |
+| `missedSamples` | number | `m.missedSamples` | Pulse attempts blocked by cooldown. |
+| `sampleCooldownMs` | number (ms) | derived | Ms remaining on the active cooldown; 0 when none. |
+| `minSampleIntervalSec` | number (s) | config | Cooldown window. |
+
+<!-- END AUTOGEN -->
+
+### Status badge
+
+`buildStatusBadge` in `io/statusBadge.js`:
+
+| Condition | Badge | Fill | Shape |
+|:---|:---|:---|:---|
+| `invalidFlowBounds=true` | `Config error: nominalFlowMin (…) >= flowMax (…)` | red | (error preset) |
+| `running=true` + `sampleCooldownMs > 0` | `SAMPLING (Ns) · <bucketVol>/<maxVolume> L` | yellow | ring |
+| `running=true` + cooldown clear | `AI: RUNNING · <bucketVol>/<maxVolume> L` | green | dot |
+| idle | `AI: IDLE` | grey | (idle preset) |
+
+---
+
+## Configuration schema &mdash; editor form to config keys
+
+Source of truth: `generalFunctions/src/configs/monster.json` plus `nodeClass.buildDomainConfig`.
+
+### General (`config.general`)
+
+| Form field | Config key | Default | Notes |
+|:---|:---|:---|:---|
+| Name | `general.name` | `"Monster Configuration"` | Free-text. |
+| (auto-assigned) | `general.id` | `null` | Node-RED node id. |
+| Default unit | `general.unit` | `unitless` | Not used by the sampling program. |
+| Enable logging | `general.logging.enabled` | `true` | Master switch. |
+| Log level | `general.logging.logLevel` | `info` | `debug` / `info` / `warn` / `error`. |
+
+### Functionality (`config.functionality`)
+
+| Form field | Config key | Default | Notes |
+|:---|:---|:---|:---|
+| (hidden) | `functionality.softwareType` | `monster` | Constant. |
+| (hidden) | `functionality.role` | `samplingCabinet` | Constant. |
+| AQUON sample name | `functionality.aquonSampleName` | _unset_ | Forwarded to `source.aquonSampleName` in `extraSetup`. Falls back to `'112100'` in `_initState`. |
+
+### Asset (`config.asset`)
+
+| Form field | Config key | Default | Notes |
+|:---|:---|:---|:---|
+| Asset UUID | `asset.uuid` | `null` | Globally-unique identifier. |
+| Geolocation | `asset.geoLocation` | `{x:0, y:0, z:0}` | |
+| Supplier | `asset.supplier` | `"Unknown"` | Schema only &mdash; not used by the sampling program. |
+| Type | `asset.type` | `"sensor"` (enum) | Schema only. |
+| SubType | `asset.subType` | `"pressure"` | Schema only; misleading default for a sampling cabinet (flag). |
+| Model | `asset.model` | `"Unknown"` | Schema only. |
+| Empty bucket weight (kg) | `asset.emptyWeightBucket` | `3` | Used in `bucketWeight = bucketVol + emptyWeightBucket` and in `maxVolume = maxWeight - emptyWeightBucket`. |
+
+### Constraints (`config.constraints`)
+
+| Form field | Config key | Default | Range | Notes |
+|:---|:---|:---|:---|:---|
+| Sampling time (hr) | `constraints.samplingtime` | `0` | ≥ 0 | Run length. Used as `samplingtime · 3600 · 1000` ms for `stop_time`. |
+| Sampling period (hr) | `constraints.samplingperiod` | `24` | ≥ 1 | Documented as the fixed composite-collection period; not enforced by `samplingProgram` &mdash; the AQUON schedule arms the run. |
+| Min volume (L) | `constraints.minVolume` | `5` | ≥ 5 | Used in `targetVolume = minVolume · √(maxVolume / minVolume)`. |
+| Max weight (kg) | `constraints.maxWeight` | `23` | ≤ 23 | Bucket-overload bound; `maxVolume = maxWeight - emptyWeightBucket`. |
+| Sub-sample volume (mL) | `constraints.subSampleVolume` | `50` | fixed | Schema enforces `min=max=50`. Hard-coded as `volume_pulse = 0.05` in domain. |
+| Storage temperature (°C) | `constraints.storageTemperature.min/max` | `{1, 5}` | per-leg | Schema only &mdash; informational. |
+| Flowmeter present | `constraints.flowmeter` | `true` | bool | ⚠️ In schema but **not** wired in `buildDomainConfig`. Effectively always `true`. |
+| Closed system | `constraints.closedSystem` | `false` | bool | Schema only. |
+| Intake speed (m/s) | `constraints.intakeSpeed` | `0.3` | ≥ 0 | Schema only &mdash; informational. |
+| Intake diameter (mm) | `constraints.intakeDiameter` | `12` | ≥ 0 | Schema only &mdash; informational. |
+| Nominal flow min (m³/h) | `constraints.nominalFlowMin` | `0` | ≥ 0 | Lower bound of rain-driven flow prediction. |
+| Flow max (m³/h) | `constraints.flowMax` | `0` | ≥ 0 | Upper bound of rain-driven flow prediction. |
+| Max rain reference | `constraints.maxRainRef` | `10` | > 0 | Rain index that maps to `flowMax`. |
+| Min sample interval (s) | `constraints.minSampleIntervalSec` | `60` | ≥ 0 | Cooldown guard. |
+
+> [!WARNING]
+> **Default `flowMax = 0` blocks every run.** `validateFlowBounds` requires `0 ≤ nominalFlowMin < flowMax`. Out of the box the bounds are invalid and `_beginRun` never fires. Set `flowMax` to a realistic upper bound before deploying.
+
+### Unit policy
+
+monster has **no `requireUnitForTypes` policy** declared in `specificClass`. Conversions happen at the boundary:
+
+| Quantity | Canonical (internal) | Carried as | Notes |
+|:---|:---|:---|:---|
+| Flow (`data.flow`) | m³/h | m³/h | `handlers.dataFlow` converts inbound via `convert(value).from(unit).to('m3/h')`. |
+| Flow (measured-child) | as supplied | as supplied | `flowTracker.handleMeasuredFlow` defaults to `'m3/h'` when `unit` is missing; **does not convert**. Wire children that emit in m³/h. |
+| Volume (`bucketVol`) | L | L | Output also exposes m³ derivations (`targetVolumeM3`, `targetDeltaM3`). |
+| Weight | kg | kg | |
+| Time | s (timers) / ms (timestamps) | mixed | `timePassed` / `timeLeft` in s, `nextDate` in epoch ms. |
+
+---
+
+## Child registration
+
+Source: `src/specificClass.js` `_wireMeasurementChild`. The registrar subscribes to all three `flow.measured.<position>` events on the child's measurement emitter as long as the child's `config.asset.type` is `'flow'` or unset.
+
+| Software type | Filter | Wired to | Side-effect |
+|:---|:---|:---|:---|
+| `measurement` | `asset.type='flow'` (or missing) | `flowTracker.handleMeasuredFlow` (handles all three positions) | Latches latest measured flow per position; `getEffectiveFlow` blends across positions and with `manualFlow`. |
+| `measurement` | `asset.type` anything else | _ignored_ | The branch returns early; no listener is attached. |
+
+monster has **no position-based filtering**. Unlike `rotatingMachine` (which routes upstream pressure separately from downstream), all three flow positions are wired to the same handler and the latest value per position wins.
+
+There are **no auto-registered virtual children** (no `dashboard-sim-*` equivalent). Inject simulated flow via `data.flow` instead.
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference &mdash; Architecture](Reference-Architecture) | Code map, sampling-program loop, prediction + cooldown pipeline |
+| [Reference &mdash; Examples](Reference-Examples) | Shipped flows + debug recipes |
+| [Reference &mdash; Limitations](Reference-Limitations) | Known issues and open questions |
+| [EVOLV &mdash; Topic Conventions](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topic-Conventions) | Platform-wide topic rules |
+| [EVOLV &mdash; Telemetry](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Telemetry) | Port 0 / 1 / 2 InfluxDB layout |

wiki/Reference-Examples.md

@@ -0,0 +1,156 @@
+# Reference — Examples
+
+![code-ref](https://img.shields.io/badge/code--ref-cd185dc-blue)
+
+> [!NOTE]
+> Every example flow shipped under `nodes/monster/examples/`, plus how to load them, what they show, and the debug recipes that go with them. Live source: `nodes/monster/examples/`.
+
+> [!NOTE]
+> Pending full node review (2026-05). Content reflects `CONTRACT.md`, `examples/README.md`, and current source only. Example flows have not been validated end-to-end on a live Docker instance.
+
+---
+
+## Shipped examples
+
+| File | Tier | Dependencies | What it shows |
+|:---|:---:|:---|:---|
+| `basic.flow.json` | 1 | EVOLV only | Quick-start flow — manual flow inject, manual start, seeded `rain_data` and `monsternametijden`, debug taps on the three ports. **Status: pending validation.** |
+| `02-integrated-e2e.json` | 2 | EVOLV only | End-to-end integration — measurement child wired in, schedule arming, sampling-run completion. **Status: pending validation.** |
+
+Per `examples/README.md`, the following files are also referenced but **not currently in this directory** at `cd185dc`:
+
+| Referenced filename | Status |
+|:---|:---|
+| `integration.flow.json` | Referenced in README; not present in `examples/` — possibly renamed to `02-integrated-e2e.json`. Flag for review. |
+| `edge.flow.json` | Referenced in README; not present. Flag for review. |
+| `monster-dashboard.flow.json` | Referenced in README + top-level `README.md`; not present. Flag for review. |
+| `monster-api-dashboard.flow.json` | Referenced in README + top-level `README.md`; not present. Flag for review. The README warns that production use requires hardening of placeholder credentials (`__SET_*__`). |
+
+> [!IMPORTANT]
+> Reconcile the example flow inventory: either restore the four referenced flows from history, or update `examples/README.md` + the top-level `README.md` to remove dangling references. Tracked.
+
+---
+
+## Loading a flow
+
+### Via the editor
+
+1. Open the Node-RED editor at `http://localhost:1880`.
+2. Menu → Import → drag the JSON file.
+3. Click Deploy.
+
+### Via the Admin API
+
+```bash
+curl -X POST -H 'Content-Type: application/json' \
+  --data @"nodes/monster/examples/basic.flow.json" \
+  http://localhost:1880/flows
+```
+
+---
+
+## Example 01 — Basic (`basic.flow.json`)
+
+Single-cabinet flow with the minimum inputs to drive one sampling run. Pending live validation.
+
+### Suggested click order after deploy
+
+1. **Seed the rain forecast.** Click the `set.rain` inject. `sumRain` / `avgRain` populate; `predictedRateM3h` jumps from `nominalFlowMin` to a band-scaled value. (Skip this step and the prediction collapses to `nominalFlowMin`, which is `0` out of the box — the run will still start, but `predFlow` will be 0 and `m3PerPuls` will round to 0; see [Limitations](Reference-Limitations#mperpuls-can-round-to-zero).)
+2. **Seed the schedule.** Click the `set.schedule` inject with an AQUON row array containing at least one `START_DATE` in the future for `aquonSampleName=112100` (the default).
+3. **Push a manual flow.** Click `data.flow = {value: 240, unit: 'm3/h'}`.
+4. **Start.** Click `cmd.start = true`. On the next tick `validateFlowBounds` runs &mdash; if `nominalFlowMin < flowMax`, `_beginRun` fires and `running` flips to `true`.
+5. **Watch Port 0.** `pulse` blips to `true` for one tick on each integrated-volume threshold cross. `bucketVol` rises in 50 mL steps. `sumPuls` increments.
+6. **Stop.** Either wait `samplingtime` hours for `_endRun`, or redeploy.
+
+> [!IMPORTANT]
+> **Screenshot needed.** Editor capture of `basic.flow.json` after step 4. Save as `wiki/_partial-screenshots/monster/basic-running.png`.
+
+### Try the cooldown guard
+
+After the first pulse:
+
+1. Push a higher manual flow (`data.flow = {value: 1200, unit: 'm3/h'}`) so the integrator races past `m3PerPuls` again within `minSampleIntervalSec` (default 60 s).
+2. Watch the log: `Sampling too fast. Cooldown active for Ns.`
+3. `missedSamples` increments, `pulse` stays `false`, `sampleCooldownMs` ticks down to 0, then the next pulse fires.
+
+---
+
+## Example 02 &mdash; Integrated end-to-end (`02-integrated-e2e.json`)
+
+> [!IMPORTANT]
+> **Screenshot needed.** Editor capture of `02-integrated-e2e.json`. Save as `wiki/_partial-screenshots/monster/02-integrated.png`. Replace this callout with the image link.
+
+One monster + one or more `measurement` flow children. Demonstrates:
+
+- Auto-registration via Port 2 at deploy (each child's `child.register` reaches the monster).
+- Measured + manual flow blend &mdash; `getEffectiveFlow` averages both when present.
+- Schedule-armed sampling run &mdash; `nextDate` triggers `_beginRun` without an `i_start` click.
+
+Detailed click order: pending review.
+
+---
+
+## Dashboard / API example flows
+
+The `examples/README.md` references `monster-dashboard.flow.json` (FlowFuse charts for `pulse`, `bucket`, `predFlow`) and `monster-api-dashboard.flow.json` (Open-Meteo + AQUON SFTP + Grafana publish template with placeholder credentials). Neither file is present at `cd185dc`. See the inventory note at the top of this page.
+
+When restored, the API flow MUST be hardened before production:
+
+- Replace every `__SET_*__` placeholder with an env-backed secret.
+- Pin the Open-Meteo endpoint and Aquon SFTP host to environment variables.
+- Route the dashboard publish through `dashboardAPI`, not a hardcoded Grafana URL.
+
+---
+
+## Docker compose snippet
+
+To bring up Node-RED + InfluxDB with EVOLV nodes pre-loaded:
+
+```yaml
+# docker-compose.yml (extract)
+services:
+  nodered:
+    build: ./docker/nodered
+    ports: ['1880:1880']
+    volumes:
+      - ./docker/nodered/data:/data/evolv
+  influxdb:
+    image: influxdb:2.7
+    ports: ['8086:8086']
+```
+
+Full file: [EVOLV/docker-compose.yml](https://gitea.wbd-rd.nl/RnD/EVOLV/src/branch/development/docker-compose.yml).
+
+---
+
+## Debug recipes
+
+| Symptom | First thing to check | Where to look |
+|:---|:---|:---|
+| `pulse` never fires | Is `running=true`? If not, check `validateFlowBounds` &mdash; the `Invalid flow bounds. nominalFlowMin=…, flowMax=…` warn means the default `flowMax=0` is in play. Set `nominalFlowMin < flowMax` in the editor. | `parameters/parameters.js → validateFlowBounds` |
+| `pulse` never fires (bounds OK) | Is `m3PerPuls` zero? `_beginRun` rounds `predFlow / targetPuls` to nearest integer m³. Low `predFlow` rounds to 0; integrator divides by 0 → `temp_pulse = Infinity`, the `sumPuls < absMaxPuls` guard then runs out. | `sampling/samplingProgram.js → _beginRun` |
+| Pulses arrive too fast / skipped | Cooldown guard active. Inspect `missedSamples` + `sampleCooldownMs`. Look for `Sampling too fast. Cooldown active for Ns.` in the log. | `sampling/samplingProgram.js → _maybeEmitPulse` |
+| `q` always zero | Measured-flow child not registered, manual flow not pushed. Watch Port 2 + `data.flow` history. | `flow/flowTracker.js` |
+| Measurement child ignored at register | Child's `config.asset.type` is set to something other than `"flow"` (e.g. `"flow-electromagnetic"`). monster only accepts `asset.type = "flow"` or unset. Set `asset.type: "flow"` on the measurement node. | `specificClass.js → _wireMeasurementChild` |
+| Measured-flow values look 60&times; high or wrong unit | `flowTracker.handleMeasuredFlow` does **not** convert: it stores the value as-supplied (defaulting unit to `'m3/h'`). Wire children that already emit m³/h or fix at the source. | `flow/flowTracker.js → handleMeasuredFlow` |
+| `nextDate` not arming | `set.schedule` payload didn't include any rows matching `aquonSampleName` with a future `START_DATE`. | `schedule/schedule.js → regNextDate` |
+| `sumRain` stays zero with rain input | `set.rain` is ignored while `running=true` &mdash; only consumed between runs. Wait for `_endRun` or push the rain payload before `cmd.start`. | `specificClass.js → updateRainData` |
+| `data.flow` payloads dropped silently | The handler requires `{value: <number>, unit: <string>}`. Bare numbers or missing `unit` log `data.flow payload must include numeric value and unit.` | `commands/handlers.js → dataFlow` |
+| `predictedRateM3h` stays at `nominalFlowMin` | `set.rain` not sent, `lastRainUpdate` is 0, or > 2 hours have passed (`RAIN_STALE_MS`). Re-push the rain payload. | `parameters/parameters.js → getRainIndex` |
+| `flowmeter=false` has no effect | `constraints.flowmeter` is in the schema but **not** wired in `buildDomainConfig`. The sampling program always runs in proportional mode. | `src/nodeClass.js → buildDomainConfig` |
+| `set.mode` / `set.model-prediction` no-op | Handlers delegate to `source.setMode()` / `source.setModelPrediction()` which don't exist. These topics are reserved for future use. | `commands/handlers.js` |
+| Status badge stuck at `Config error: …` | `nominalFlowMin >= flowMax`. Fix the bounds and redeploy. | `io/statusBadge.js` |
+
+> Never ship `enableLog: 'debug'` in a demo &mdash; fills the container log within seconds and obscures real errors.
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference &mdash; Contracts](Reference-Contracts) | Topic + config + child filters |
+| [Reference &mdash; Architecture](Reference-Architecture) | Code map, sampling-program loop, prediction + cooldown pipeline |
+| [Reference &mdash; Limitations](Reference-Limitations) | Known issues and open questions |
+| [EVOLV &mdash; Topology Patterns](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topology-Patterns) | Where monster fits in a larger plant |

wiki/Reference-Limitations.md

@@ -0,0 +1,127 @@
+# Reference — Limitations
+
+![code-ref](https://img.shields.io/badge/code--ref-cd185dc-blue)
+
+> [!NOTE]
+> What `monster` does not do, current rough edges, and open questions. Open items live in `.agents/improvements/IMPROVEMENTS_BACKLOG.md` in the superproject.
+
+> [!NOTE]
+> Pending full node review (2026-05). Content reflects `CONTRACT.md` and current source only. Known limitations enumerated in `CONTRACT.md` Section 14 are propagated below; additional issues may surface during the planned audit.
+
+---
+
+## When you would not use this node
+
+| Scenario | Use instead |
+|:---|:---|
+| Ad-hoc single grab sample | Fire `cmd.start` once and tear it down — monster is overkill for one-off work. A `measurement` child with a one-shot inject is lighter. |
+| Generic flow totaliser | `measurement` with the right type/variant, or a dedicated integrator function on the upstream parent. |
+| Multi-constituent analyser (NH4, NO3, COD, TSS, …) | monster only emits **pulse + bucket-volume** events — it does **not** model analyte concentrations. The Home page framing ("multi-parameter biological process monitor") describes the **downstream** consumer of the composite sample, not the monster node's outputs. Pending review whether the framing should change or whether analyte fields should be added to Port 0. |
+| Time-mode sampling (no flow source) | Not exercised. `constraints.flowmeter = false` exists in the schema but is **not** forwarded in `buildDomainConfig`; the sampling program always runs in flow-proportional mode. |
+
+---
+
+## Known limitations
+
+### `m3PerPuls` can round to zero
+
+`_beginRun` computes `m3PerPuls = Math.round(predFlow / targetPuls)`. With low `predFlow` (e.g. an unconfigured `flowMax`, a stale rain forecast, or a very short `samplingtime`) this rounds to 0. The integrator then divides by 0; `temp_pulse` becomes `Infinity`; the first iteration of `_maybeEmitPulse` ramps `sumPuls` up to `absMaxPuls` in one tick and stops. **Symptom: instant bucket fill, then idle.** Workaround: ensure `predFlow ≥ targetPuls` (typical `targetPuls` is 200), e.g. `flowMax ≥ 200 m³` or longer `samplingtime`. Tracked.
+
+### Default `flowMax = 0` blocks every run
+
+The schema defaults `nominalFlowMin = 0` and `flowMax = 0`. `validateFlowBounds` requires `min >= 0 && max > 0 && min < max`, so the default config is invalid and the run never starts. The status badge surfaces this as `Config error: nominalFlowMin (0) >= flowMax (0)`. Fix the bounds before deploying. Tracked.
+
+### `set.rain` is dropped while `running=true`
+
+`updateRainData` short-circuits when `running` is true &mdash; the rain forecast is only consumed between runs. During a long `samplingtime` (e.g. 24 h) the rain forecast goes stale silently. `getRainIndex` does enforce a 2-hour `RAIN_STALE_MS` cap on `avgRain`, but only **outside** a run; during a run the cached `predFlow` is whatever `_beginRun` froze. Open question.
+
+### `set.mode` and `set.model-prediction` are reserved
+
+Both handlers delegate to optional methods (`source.setMode()`, `source.setModelPrediction()`) that don't exist on `Monster`. Sending these topics is a no-op. They survive the registry only as forward-compatibility placeholders. Scheduled to either be implemented or removed in a later phase.
+
+### `constraints.flowmeter` is not wired
+
+The schema field exists with a `true` default, but `nodeClass.buildDomainConfig` does **not** forward it. The sampling program assumes a flow source unconditionally. Setting `flowmeter=false` in the editor has no runtime effect. Tracked.
+
+### `subSampleVolume` is hard-coded at 50 mL
+
+`volume_pulse = 0.05` in `_initSamplingDefaults` is a constant. The schema enforces `min=max=50` so the field is informational only. Bucket-and-target math (`minPuls`, `maxPuls`, `absMaxPuls`, `targetPuls`) all assume 50 mL. Changing this requires a coordinated change across `parameters.js`, the schema, and any consumer that decodes pulse counts back to volume. Tracked.
+
+### Measured-flow handler does not convert units
+
+`flowTracker.handleMeasuredFlow` reads `eventData.unit` but only uses it to label the stored measurement &mdash; the **value is not converted**. If a measurement child emits in `l/s`, monster stores the raw number and labels it `l/s`, but `getEffectiveFlow` is consumed as if it were m³/h. Wire children that already emit in m³/h, or set `default unit` on the child to `m3/h`. Tracked.
+
+### Edge test `sampling-guards.edge.test.js` cooldown-guard case fails
+
+A pre-existing failure documented in `CONTRACT.md` Section 14. The cooldown skip increments `missedSamples` but the assertion expects different timing. Tracked.
+
+### S88 colour cleanup pending
+
+The editor node colour in `monster.html` is `#4f8582` (teal). The correct Unit-level S88 colour is `#50a8d9`. The Mermaid diagrams in this wiki already use the correct colour. The editor node tile must be updated separately. Tracked in `.claude/rules/node-red-flow-layout.md` Section 16.
+
+### No formal FSM
+
+Unlike `rotatingMachine` (idle → starting → warmingup → operational → …) monster only has the `running` boolean. There is no protected-state guarantee, no abort token, no sequence registry. Cooldown and bounds are the only safety guards. If a future requirement needs e.g. a `pausing` / `paused` state, the sampling program needs to be lifted onto the platform's `state` module. Open question.
+
+### No multi-parent registration audit
+
+`childRegistrationUtils.registerChild` runs unconditionally. Whether monster can be safely wired under multiple parents (e.g. one reactor and one settler), and whether teardown ordering is correct, has not been audited. Open question.
+
+### Multi-constituent reporting absent
+
+The node's framing in the project memory ("multi-parameter biological process monitor &mdash; surrogate for a benchtop analyser") suggests monster reports NH4 / NO3 / COD / TSS / etc. **The current implementation does not.** monster emits volumetric pulse + bucket state only. Lab analyte values are produced by a separate downstream consumer that ingests the physical composite sample collected on the monster's pulses. Either:
+
+- the framing should be tightened to "composite sampler / sampling-cabinet controller", or
+- analyte fields (with timestamps and per-pulse correlations) should be added to Port 0.
+
+Pending decision-gate review.
+
+---
+
+## Open questions (tracked)
+
+| Question | Where it lives |
+|:---|:---|
+| Should `set.rain` updates apply mid-run (best-effort `predFlow` re-compute) or stay run-frozen? | Internal &mdash; not yet ticketed |
+| Implement or remove `set.mode` + `set.model-prediction` placeholders | Internal |
+| Wire `constraints.flowmeter` and exercise the time-mode path | Internal |
+| Add unit conversion to `flowTracker.handleMeasuredFlow` | Internal |
+| Round-to-zero `m3PerPuls` &mdash; clamp to ≥ 1 or refuse to start? | Internal |
+| Multi-parent registration safety audit | Internal |
+| Add formal FSM (`idle` / `armed` / `running` / `cooldown`)? | Open |
+| Add analyte / multi-constituent reporting to Port 0, or rephrase the node's framing | Decision-gate &mdash; pending |
+| Restore or remove the dangling `monster-dashboard.flow.json` + `monster-api-dashboard.flow.json` references | Internal |
+
+---
+
+## Migration notes
+
+### From legacy topic aliases
+
+The pre-canonical topics (`i_start`, `monsternametijden`, `rain_data`, `input_q`, `setMode`, `model_prediction`) are accepted as aliases and emit a one-time deprecation warning. They are scheduled for removal in Phase 7. Update flows to use the canonical names from [Reference &mdash; Contracts](Reference-Contracts#topic-contract):
+
+| Legacy | Canonical |
+|:---|:---|
+| `i_start` | `cmd.start` |
+| `monsternametijden` | `set.schedule` |
+| `rain_data` | `set.rain` |
+| `input_q` | `data.flow` |
+| `setMode` | `set.mode` |
+| `model_prediction` | `set.model-prediction` |
+| `registerChild` | `child.register` |
+
+### Pre-2026-05-11 invalid-bounds silent skip
+
+Before 2026-05-11 `nominalFlowMin` / `flowMax` were not declared in `monster.json`'s `constraints` section. `configUtils` stripped them as unknown keys; bounds collapsed to undefined → NaN → invalid, silently blocking every run. Fixed in the schema; ensure your `monster.json` is at the current commit.
+
+---
+
+## Related pages
+
+| Page | Why |
+|:---|:---|
+| [Home](Home) | Intuitive overview |
+| [Reference &mdash; Contracts](Reference-Contracts) | Topic + config + child filters (alias map at the top) |
+| [Reference &mdash; Architecture](Reference-Architecture) | Code map, sampling-program loop, prediction + cooldown pipeline |
+| [Reference &mdash; Examples](Reference-Examples) | Shipped flows + debug recipes |
+| [EVOLV &mdash; Architecture](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Architecture) | Platform-wide three-tier pattern |

wiki/_Sidebar.md

@@ -0,0 +1,21 @@
+### monster
+
+- [Home](Home)
+
+**Reference**
+
+- [Contracts](Reference-Contracts)
+- [Architecture](Reference-Architecture)
+- [Examples](Reference-Examples)
+- [Limitations](Reference-Limitations)
+
+**Related**
+
+- [EVOLV master wiki](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Home)
+- [measurement wiki](https://gitea.wbd-rd.nl/RnD/measurement/wiki/Home)
+- [reactor wiki](https://gitea.wbd-rd.nl/RnD/reactor/wiki/Home)
+- [settler wiki](https://gitea.wbd-rd.nl/RnD/settler/wiki/Home)
+- [dashboardAPI wiki](https://gitea.wbd-rd.nl/RnD/dashboardAPI/wiki/Home)
+- [Topology Patterns](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topology-Patterns)
+- [Topic Conventions](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Topic-Conventions)
+- [Telemetry](https://gitea.wbd-rd.nl/RnD/EVOLV/wiki/Telemetry)