Add ams_slot to start_print

packages/ts-types/src/schemas/edge.ts

@@ -131,6 +131,14 @@ export const PrinterCommandSchema = Type.Union([
      * may wait days and the URL would be long expired.
      */
     url: Type.String({ format: "uri" }),
+    /**
+     * Use this AMS slot (0-based, across all units: AMS1 slot 4 is 3)
+     * instead of the one the project's own filament colour would pick.
+     * Only valid for a single-filament project, and the slot must hold the
+     * same material type; the gateway refuses otherwise. Absent: map by the
+     * project's filament.
+     */
+    ams_slot: Type.Optional(Type.Integer({ minimum: 0, maximum: 15 })),
   }, { additionalProperties: false }),
   Type.Object({
     action: Type.Literal("set_fan_speed"),