Add unitPreference to PlatformConfig

README.md

@@ -1881,7 +1881,10 @@ export interface PlatformConfig {
 
   defaultSpiceEngine?: AutocompleteString<"spicey" | "ngspice">;
 
+  unitPreference?: "mm" | "in" | "mil";
+
   pcbDisabled?: boolean;
+  routingDisabled?: boolean;
   schematicDisabled?: boolean;
   partsEngineDisabled?: boolean;
 

generated/PROPS_OVERVIEW.md

@@ -1620,7 +1620,10 @@ export interface PlatformConfig {
 
   defaultSpiceEngine?: AutocompleteString<"spicey" | "ngspice">
 
+  unitPreference?: "mm" | "in" | "mil"
+
   pcbDisabled?: boolean
+  routingDisabled?: boolean
   schematicDisabled?: boolean
   partsEngineDisabled?: boolean
 

lib/platformConfig.ts

@@ -69,6 +69,8 @@ export interface PlatformConfig {
 
   defaultSpiceEngine?: AutocompleteString<"spicey" | "ngspice">
 
+  unitPreference?: "mm" | "in" | "mil"
+
   pcbDisabled?: boolean
   routingDisabled?: boolean
   schematicDisabled?: boolean
@@ -197,6 +199,7 @@ export const platformConfig = z.object({
     )
     .optional(),
   defaultSpiceEngine: defaultSpiceEngine.optional(),
+  unitPreference: z.enum(["mm", "in", "mil"]).optional(),
   localCacheEngine: z.any().optional(),
   pcbDisabled: z.boolean().optional(),
   routingDisabled: z.boolean().optional(),

tests/platformConfig.unitPreference.test.ts

@@ -0,0 +1,18 @@
+import { expect, test } from "bun:test"
+import { platformConfig } from "lib/platformConfig"
+
+test("unitPreference accepts mm, in, and mil", () => {
+  expect(platformConfig.parse({ unitPreference: "mm" }).unitPreference).toBe(
+    "mm",
+  )
+  expect(platformConfig.parse({ unitPreference: "in" }).unitPreference).toBe(
+    "in",
+  )
+  expect(platformConfig.parse({ unitPreference: "mil" }).unitPreference).toBe(
+    "mil",
+  )
+})
+
+test("unitPreference rejects unsupported values", () => {
+  expect(() => platformConfig.parse({ unitPreference: "cm" })).toThrow()
+})