按规划继续工作

结论：补齐 LinuxCNC tooldata_common.cc 随机换刀器 load/save 验证边界，WASM/SDK/OPFS 只透传 random-toolchanger 配置；native、WASM、OPFS 和浏览器 smoke 验证已通过。

wasm-port/docs/drift-report.md

@@ -28,7 +28,7 @@ semantic rewrites:
 | Canonical output | Canonical calls are captured as test events instead of driving hardware. |
 | Feed-rate state | `SET_FEED_RATE` updates standalone canonical runtime state so vendored `convert_length_units()` can read it back through `GET_EXTERNAL_FEED_RATE()` during G20/G21 changes. |
 | Tool-data reload | LinuxCNC `RELOAD_TOOLDATA` is captured as a canonical test event; browser/native tool-table reload plumbing remains a future host/runtime adapter. |
-| Tool table storage | Vendored LinuxCNC `tooldata_common.cc` owns tool-table parsing and formatting; the standalone boundary only supplies the in-memory `tooldata_get()`/`tooldata_put()` callbacks and exposes load/save through the WASM C ABI. |
+| Tool table storage | Vendored LinuxCNC `tooldata_common.cc` owns tool-table parsing and formatting; the standalone boundary only supplies the in-memory `tooldata_get()`/`tooldata_put()` callbacks, exposes load/save through the WASM C ABI, and forwards the host random-toolchanger flag to LinuxCNC `tooldata_init()`. |
 | Tool slot status | Standalone tool adapter state supplies `GET_EXTERNAL_TOOL_SLOT()` and `GET_EXTERNAL_SELECTED_TOOL_SLOT()` for vendored `Interp::synch()`; `linuxcnc_interp_init_harness` guards current/selected slot synchronization. |
 | Interpreter state tags | LinuxCNC `UPDATE_TAG` callbacks are captured from the state tags packed by vendored interpreter code; standalone code does not derive modal state. |
 | Rotary indexer lock state | LinuxCNC `UNLOCK_ROTARY` and `LOCK_ROTARY` callbacks are captured from the vendored single-axis indexer path; standalone code does not implement rotary-indexing semantics. |