按规划继续工作

结论：解释器 Node WASM 与浏览器 smoke 已统一使用共享 fixture 矩阵，聚合 host/WASM/browser 验证通过。

wasm-port/docs/compatibility-validation.md

@@ -236,6 +236,12 @@ machine-session validation remain future work.
 
 ## WASM/Browser Fixture Matrix
 
+The executable fixture lists for Node WASM and browser interpreter smoke tests
+are centralized in `tests/fixtures/interp-fixture-matrix.mjs`. Additions to the
+matrix must continue to route execution through the SDK and exported C ABI
+backed by vendored LinuxCNC interpreter code; the matrix is only a test
+coverage list, not a CNC behavior implementation.
+
 Node WASM `Interp::execute()` coverage currently includes:
 
 - `minimal_linear`