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"),

schemas/continuum/v1/edge/printer_command.schema.json

@@ -27,6 +27,12 @@
           "type": "string",
           "format": "uri",
           "description": "A presigned, expiring GET for the job file. Deliberately a URL rather than the bytes: the file is tens of megabytes, this is a JSON control channel, and handing the gateway a URL keeps object-store credentials out of every gateway on every farm. Expect it to be valid for minutes, and note that an upload to a printer is slow - 0.2 MiB/s measured over FTPS to a P1P - so the download must finish before the transfer starts, not stream through it."
+        },
+        "ams_slot": {
+          "type": "integer",
+          "minimum": 0,
+          "maximum": 15,
+          "description": "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."
         }
       },
       "required": [