Complete XYZAC LinuxCNC WASM parity and smooth 3D preview

web/worker/test_xyzac_program_preview.mjs

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+import assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+import createModule from "../../build-wasm/linuxcnc-sim-core.js";
+import { loadSimulationCase, toWorkerConfiguration } from "../workspace/sim-case-loader.mjs";
+import { XyzacSession, CONTEXT_ID } from "./xyzac-session.mjs";
+
+const CASE = "linuxcnc/configs/sim/axis/vismach/5axis/table-rotary-tilting/xyzac-trt.ini";
+const fetchImpl = async (url) => { try { const body = await readFile(new URL(`../../${String(url).replace(/^\//, "")}`, import.meta.url)); return { ok: true, text: async () => body.toString("utf8") }; } catch { return { ok: false, text: async () => "" }; } };
+const bundle = await loadSimulationCase({ path: CASE, fetchImpl });
+const core = await createModule({ wasmBinary: await readFile(new URL("../../build-wasm/linuxcnc-sim-core.wasm", import.meta.url)) });
+const session = new XyzacSession(core, { sessionId: "xyzac-preview" });
+const base = { schema_version: 1, context_id: CONTEXT_ID, session_id: session.sessionId };
+let seq = 0;
+const send = (kind, operation_id, payload = {}) => session.accept({ ...base, kind, seq: ++seq, operation_id, payload });
+send("HELLO", "hello");
+send("SESSION_ATTACH", "attach");
+assert.equal(send("LOAD_WORKSPACE", "workspace", { root_path: "/workspace", configuration: toWorkerConfiguration(bundle) }).payload.status, "verified");
+const source = "G21 G90\nG0 X10 Y5 Z200 A30 C45\nG1 X20 Y10 Z180 A35 C50 F100\nM2\n";
+const loaded = send("PROGRAM_LOAD", "program-load", { source, path: "demos/preview.ngc" });
+assert.equal(loaded.kind, "COMMAND_RESULT");
+assert.equal(loaded.payload.program.source, "linuxcnc-wasm-sim_program");
+assert.equal(loaded.payload.program.path, "demos/preview.ngc");
+assert.equal(loaded.payload.program.source_hash, "fnv1a64:b7f4678312207b31");
+assert.equal(loaded.payload.preview.status, "verified");
+assert.equal(loaded.payload.preview.source, "linuxcnc-wasm-sim_program");
+assert.equal(loaded.payload.preview.path, "demos/preview.ngc");
+assert.equal(loaded.payload.preview.line_count, 4);
+assert.ok(loaded.payload.preview.segments.length >= 2);
+assert.ok(loaded.payload.preview.segments.every((segment) => Number.isSafeInteger(segment.id) && Number.isSafeInteger(segment.source_line)));
+assert.ok(loaded.payload.preview.segments.every((segment) => ["x", "y", "z", "a", "b", "c"].every((axis) => Number.isFinite(segment.start[axis]) && Number.isFinite(segment.end[axis]))));
+const previewHash = loaded.payload.preview.preview_hash;
+const snapshot = send("SNAPSHOT_REQUEST", "snapshot");
+assert.equal(snapshot.payload.panel_snapshot.program.path, "demos/preview.ngc");
+assert.equal(snapshot.payload.panel_snapshot.program.source_hash, loaded.payload.program.source_hash);
+const replay = send("PROGRAM_LOAD", "program-load", { source: "G999\n", path: "bad.ngc" });
+assert.equal(replay.replayed, true);
+assert.equal(replay.payload.preview.preview_hash, previewHash);
+const invalid = send("PROGRAM_LOAD", "invalid-load", { source: "G999\n", path: "invalid.ngc" });
+assert.equal(invalid.kind, "ERROR");
+assert.equal(invalid.payload.preview.status, "error");
+const empty = send("PROGRAM_LOAD", "empty-load", { source: "", path: "empty.ngc" });
+assert.equal(empty.kind, "ERROR");
+assert.equal(empty.payload.code, "program_source_invalid");
+console.log(JSON.stringify({ schema: "xyzac-program-preview-rtcp-04.v1", status: "verified", case: CASE, source_hash: loaded.payload.program.source_hash, line_count: loaded.payload.preview.line_count, segment_count: loaded.payload.preview.segments.length, preview_hash: previewHash, invalid_gcode: invalid.payload.preview.status, empty_code: empty.payload.code, state_hash: snapshot.payload.panel_snapshot.state_hash }));