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/docs/sim-configs-completion-plan.md

@@ -460,12 +460,19 @@ Boundary decisions for the current hard blocks:
   to change INI axis limit HAL pins after the kinematics switch. The current
   LinuxCNC owner is therefore task user-M process dispatch plus HALUI/MDI and
   the config-owned Tcl process scripts, not the standalone interpreter. Do not
-  promote this row until the boundary design in
-  `docs/full-process-boundary-design.md` has a deterministic state proof for
-  these HAL pin updates across native, Node, and browser. The Node inventory
-  guard requires this row to stay non-`REP` in Node and browser while it remains
-  `L4-USER-M-PROCESS`, and the generated inventory summary must keep it as
-  `SKIP` with that reason.
+  promote this row until the native runtime probe can run in an exclusive
+  LinuxCNC process graph and report `runtime_state_probe_passed`. The current
+  Web/virtual HAL simulation proof is complete for `M429 -> M129` turn and
+  `M428 -> M128` mill state transitions, and the real browser simulation page
+  smoke verifies the switchkins guard pins plus `ini.[xz].*` limit pins through
+  `linuxCncRealSimulationState.millturnUserMProcess`. That proof is simulation
+  evidence only: it keeps `processExecutionReady=false`, `executionEnabled=0`,
+  and `promotion_allowed=0`. The latest opt-in native probe on this workstation
+  reports `blocked_existing_linuxcnc_runtime` with
+  `exclusive_linuxcnc_runtime` because an existing `linuxcncsvr`/`rtapi_app`
+  runtime is already active. The Node inventory guard requires this row to stay
+  non-`REP` in Node and browser while it remains `L4-USER-M-PROCESS`, and the
+  generated inventory summary must keep it as `SKIP` with that reason.
 - `axis/db_demo/base.ngc` remains `L4-TOOL-DB`. The source INI declares
   `[EMCIO]DB_PROGRAM = ./db_nonran.py`, so standalone interpreter execution
   would miss LinuxCNC tool-database process startup and protocol/state