feat(units) + style: command unit-handling, frost dbase option, palette #D4A02E

measurement.html:
  • sidebar swatch → #D4A02E (amber, sensor family) — EVOLV palette redesign
    2026-05-21 (see superproject .claude/rules/node-red-flow-layout.md §10.0).
  • Add "frost" option to dbaseOutputFormat dropdown (CoreSync FROST handoff).

src/commands/handlers.js + test/basic/commands-units.basic.test.js:
  • Unit handling for data.measurement command. Analog + digital modes both
    accept scalar / object / per-channel-map payloads; supplied units are
    converted into the channel's configured (dropdown) unit.

CONTRACT.md: document the unit semantics.

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

measurement.html

@@ -14,7 +14,7 @@
 <script>
   RED.nodes.registerType("measurement", {
     category: "EVOLV",
-    color: "#a9daee", // color for the node based on the S88 schema
+    color: "#D4A02E",
     defaults: {
 
       // Define default properties
@@ -360,6 +360,7 @@
     <label for="node-input-dbaseOutputFormat"><i class="fa fa-database"></i> Database Output</label>
     <select id="node-input-dbaseOutputFormat" style="width:60%;">
       <option value="influxdb">influxdb</option>
+      <option value="frost">frost</option>
       <option value="json">json</option>
       <option value="csv">csv</option>
     </select>