完成L4-USER-M-PROCESS Web仿真接入

结论：L4-USER-M-PROCESS 已按 Web/virtual HAL 数控仿真主线完成接入，native LinuxCNC runtime 不再作为 Web 仿真阻塞；新增 text31.txt 接续剩余 77 个 SKIP 的 main-program promotion 复核。

wasm-port/tests/browser/interp_smoke.html

@@ -98,6 +98,7 @@
         "next-boundary-recommendations.tsv",
         "next-boundary-worklist.tsv",
         "promotion-candidates.tsv",
+        "remaining-skip-main-program-promotion-audit.tsv",
         "python-remap-browser-row-proof.tsv",
         "python-remap-bulk-promotion-plan.tsv",
         "python-remap-boundary-summary.tsv",
@@ -155,7 +156,7 @@
         "build/native/source-probes.tsv",
       ];
 
-      if (wasmArtifactNames.length !== 59 || new Set(wasmArtifactNames).size !== wasmArtifactNames.length) {
+      if (wasmArtifactNames.length !== 60 || new Set(wasmArtifactNames).size !== wasmArtifactNames.length) {
         throw new Error("browser_generated_artifact_documentation_coverage: WASM artifact list drift");
       }
       if (nativeArtifactTokens.length !== 8 || new Set(nativeArtifactTokens).size !== nativeArtifactTokens.length) {