参考所有分组，完成尽量多的内容：同步 OPFS 与 smoke 映射

结论：未扩展 smoke 功能行为，仅收紧 OPFS workspace、directory、policy 浏览器烟测和 source-map 守卫。

LinuxCNC 来源依据：src/emc/rs274ngc/rs274ngc_pre.cc 的 restore_parameters/save_parameters/read_text 参数文件与文件读取语义，以及 interp_internal.hh 的 rs274ngc.var/.bak 常量边界。

检查通过：./check-linuxcnc-opfs-source-map.sh；./check-linuxcnc-wasm-smoke-source-map.sh；./check-linuxcnc-workstreams-source-map.sh；./test-native.sh；./test-linuxcnc-source-link.sh。

docs/linuxcnc-wasm-smoke-source-map.md

@@ -34,7 +34,12 @@ OPFS-only is the required boundary.
 | `test-web-wasm-node-smoke.cjs` | Exercises the C ABI, `web/src/wasm-core.js`, generated switchkins config cases, and source-backed kinematics events. |
 | `test-web-wasm-browser-smoke.sh` | Runs browser checks after verifying copied WASM artifacts and smoke module structure. |
 | `web/test-browser-wasm-smoke-linuxcnc-sections.js` | Exercises LinuxCNC browser parsing and generated switchkins cases without INI_FILE_NAME remap-load aliases. |
+| `web/test-browser-wasm-smoke-opfs-workspace-sections.js` | Aggregates OPFS basic, parameter, mirror, and directory sections under browser OPFS availability. |
+| `web/test-browser-wasm-smoke-opfs-basic-sections.js` | Exercises OPFS-backed program file reads through LinuxCNC `read_text()` and rejects unsafe paths. |
 | `web/test-browser-wasm-smoke-opfs-parameter-sections.js` | Exercises LinuxCNC parameter restore/save/backup semantics through OPFS. |
+| `web/test-browser-wasm-smoke-opfs-mirror-sections.js` | Exercises OPFS/WASM mirror persistence used by source-backed program parsing and parameter movement. |
+| `web/test-browser-wasm-smoke-opfs-directory-sections.js` | Exercises OPFS directory persistence and WASM mirror refresh without filesystem persistence outside OPFS. |
+| `web/test-browser-wasm-smoke-opfs-policy-sections.js` | Exercises browser OPFS workspace and mount policy, including the rule that OPFS cannot be disabled. |
 | `web/test-browser-wasm-smoke-app-sections.js` | Verifies the browser app uses OPFS program and parameter persistence. |
 
 ## Boundaries
@@ -46,8 +51,8 @@ OPFS-only is the required boundary.
 - Generated switchkins config smoke cases must continue to come from
   `web/public/linuxcnc_switchkins_remap_config_cases.json`.
 - The browser smoke shell guard also pins required section names for LinuxCNC
-  browser parsing, OPFS parameter restore/save failure handling, and browser
-  app OPFS reload coverage.
+  browser parsing, OPFS workspace/policy/directory handling, OPFS parameter
+  restore/save failure handling, and browser app OPFS reload coverage.
 - Smoke wrappers must keep positive minimum coverage thresholds so accidental
   section loss is visible.