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# diffuser — Claude Code context
Aeration system control.
Part of the [EVOLV ](https://gitea.wbd-rd.nl/RnD/EVOLV ) wastewater-automation platform.
## S88 classification
| Level | Colour | Placement lane |
|---|---|---|
| **Equipment Module ** | `#86bbdd` | L3 |
## Flow layout rules
When wiring this node into a multi-node demo or production flow, follow the
placement rule set in the **EVOLV superproject ** :
> `.claude/rules/node-red-flow-layout.md` (in the EVOLV repo root)
Key points for this node:
- Place on lane **L3 ** (x-position per the lane table in the rule).
- 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 `#86bbdd` (Equipment Module).
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## Folder & File Layout
Every per-node file MUST use the folder name (`diffuser` ) **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 | `diffuser.js` |
| Editor HTML | `diffuser.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.
