Add via-in-pad autorouter opt-in

generated/COMPONENT_TYPES.md

@@ -2329,6 +2329,7 @@ export interface AutorouterConfig {
   cache?: PcbRouteCache
   traceClearance?: Distance
   availableJumperTypes?: Array<"1206x4" | "0603">
+  allowViaInPad?: boolean
   groupMode?:
     | "sequential_trace"
     | "subcircuit"
@@ -2371,6 +2372,12 @@ export const autorouterConfig = z.object({
   cache: z.custom<PcbRouteCache>((v) => true).optional(),
   traceClearance: length.optional(),
   availableJumperTypes: z.array(z.enum(["1206x4", "0603"])).optional(),
+  allowViaInPad: z
+    .boolean()
+    .optional()
+    .describe(
+      "Allows the autorouter to place vias inside connected pads. Omitted or false keeps via-in-pad routing disabled.",
+    ),
   groupMode: z
     .enum(["sequential_trace", "subcircuit", "sequential-trace"])
     .optional(),

generated/PROPS_OVERVIEW.md

@@ -148,6 +148,7 @@ export interface AutorouterConfig {
   cache?: PcbRouteCache
   traceClearance?: Distance
   availableJumperTypes?: Array<"1206x4" | "0603">
+  allowViaInPad?: boolean
   groupMode?:
     | "sequential_trace"
     | "subcircuit"

lib/components/group.ts

@@ -335,6 +335,7 @@ export interface AutorouterConfig {
   cache?: PcbRouteCache
   traceClearance?: Distance
   availableJumperTypes?: Array<"1206x4" | "0603">
+  allowViaInPad?: boolean
   groupMode?:
     | "sequential_trace"
     | "subcircuit"
@@ -404,6 +405,12 @@ export const autorouterConfig = z.object({
   cache: z.custom<PcbRouteCache>((v) => true).optional(),
   traceClearance: length.optional(),
   availableJumperTypes: z.array(z.enum(["1206x4", "0603"])).optional(),
+  allowViaInPad: z
+    .boolean()
+    .optional()
+    .describe(
+      "Allows the autorouter to place vias inside connected pads. Omitted or false keeps via-in-pad routing disabled.",
+    ),
   groupMode: z
     .enum(["sequential_trace", "subcircuit", "sequential-trace"])
     .optional(),

tests/autorouter.test.ts

@@ -1,8 +1,10 @@
 import { expect, test } from "bun:test"
 import {
+  autorouterConfig,
   autorouterProp,
   routingTolerances,
   subcircuitGroupPropsWithBool,
+  type AutorouterConfig,
   type RoutingTolerances,
 } from "../lib/components/group"
 
@@ -29,6 +31,15 @@ test("supports auto jumper preset", () => {
   expect(result).toBe("auto_jumper")
 })
 
+test("supports opting in to via-in-pad routing", () => {
+  const enabled: AutorouterConfig = { allowViaInPad: true }
+  const disabled: AutorouterConfig = { allowViaInPad: false }
+
+  expect(autorouterConfig.parse(enabled).allowViaInPad).toBe(true)
+  expect(autorouterConfig.parse(disabled).allowViaInPad).toBe(false)
+  expect(autorouterConfig.parse({}).allowViaInPad).toBeUndefined()
+})
+
 test("supports laser prefab preset", () => {
   const result = autorouterProp.parse("laser_prefab")
   expect(result).toBe("laser_prefab")