Complete XYZAC LinuxCNC WASM parity and smooth 3D preview

web/worker/xyzac-session.mjs

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+import { SimSession, CONTEXT_ID, PROTOCOL_SCHEMA } from "./sim-session.mjs";
+import { XyzacCommandLedger, XYZAC_COMMAND_LEDGER_SCHEMA } from "./xyzac-command-ledger.mjs";
+import { XyzacScheduler, XYZAC_SCHEDULER_SCHEMA } from "./xyzac-scheduler.mjs";
+
+export const XYZAC_SESSION_SCHEMA = "xyzac-session.v1";
+
+export class XyzacSession extends SimSession {
+  constructor(core, options = {}) {
+    super(core, options);
+    this.ledger = new XyzacCommandLedger();
+    this.scheduler = new XyzacScheduler(core);
+    this.session_scope = "selected_xyzac_simulation";
+  }
+
+  authority() {
+    return {
+      schema: XYZAC_SESSION_SCHEMA,
+      authority: "linuxcnc-wasm-worker",
+      context_id: this.contextId,
+      session_id: this.sessionId,
+      scope: this.session_scope,
+      protocol_schema: PROTOCOL_SCHEMA,
+      ledger_schema: XYZAC_COMMAND_LEDGER_SCHEMA,
+      scheduler_schema: XYZAC_SCHEDULER_SCHEMA,
+      machine: { coordinates: "XYZAC", joint_count: 5, kinematics: "xyzac-trt", rotary_units: "degrees" },
+    };
+  }
+
+  accept(input) {
+    const response = super.accept(input);
+    if (response?.payload && typeof response.payload === "object") {
+      response.payload.xyzac_session = this.authority();
+      response.payload.xyzac_ledger = this.ledger.audit();
+      response.payload.xyzac_scheduler = this.scheduler.export();
+    }
+    return response;
+  }
+}
+
+export { CONTEXT_ID, PROTOCOL_SCHEMA };