diff --git a/wasm-port/docs/compatibility-validation.md b/wasm-port/docs/compatibility-validation.md
index 6538107..0444297 100644
--- a/wasm-port/docs/compatibility-validation.md
+++ b/wasm-port/docs/compatibility-validation.md
@@ -73,9 +73,9 @@ queries against a file written to the Emscripten filesystem.
 The WASM interpreter-core smoke script builds
 `build/wasm/core/linuxcnc_interp.js` and `linuxcnc_interp.wasm` from the same
 vendored LinuxCNC interpreter source set used by the native minimal
-interpreter harness. It loads the module in Node, runs the `minimal_linear`
-G-code fixture through `Interp::execute()`, and compares emitted canonical
-events with `tests/fixtures/canon/minimal_linear.events`.
+interpreter harness. It loads the module in Node, runs the first WASM
+interpreter fixture group through `Interp::execute()`, and compares emitted
+canonical events with the matching files in `tests/fixtures/canon/`.
 
 The OPFS host-boundary script validates the JavaScript file-service adapter
 with a Node mock of the browser File System Access handles. It covers nested
@@ -92,8 +92,9 @@ module, queries vendored LinuxCNC INI parsing through the SDK, and performs an
 OPFS text-file, generic session snapshot, machine file, and G-code text
 round trip.
 
-The aggregate host smoke script builds the INI WASM artifact once, then runs
-the Node WASM smoke, the Node OPFS mock smoke, and the Chromium browser smoke.
+The aggregate host smoke script builds the INI and interpreter-core WASM
+artifacts once, then runs the Node WASM smokes, the Node OPFS mock smoke, and
+the Chromium browser smoke.
 
 ## Source Coverage
 
@@ -142,7 +143,7 @@ The validation fails if:
 | Harness | Purpose |
 | --- | --- |
 | `tests/wasm/node/verify_ini_wasm.sh` | Validates the browser-facing INI WASM module can be built from vendored LinuxCNC `inifile.cc`, loaded through the JS SDK in Node, and queried through the exported C ABI. |
-| `tests/wasm/node/verify_interp_wasm.sh` | Validates the initial interpreter-core WASM module can be built from vendored LinuxCNC interpreter source, run `minimal_linear.ngc` through `Interp::execute()`, and match the native canonical event fixture. |
+| `tests/wasm/node/verify_interp_wasm.sh` | Validates the initial interpreter-core WASM module can be built from vendored LinuxCNC interpreter source, run the first fixture group through `Interp::execute()`, and match the native canonical event fixtures. |
 | `tests/opfs/node/verify_file_service.sh` | Validates the host-owned OPFS text-file adapter, path model, session snapshot store, machine file store, and G-code text store used by the browser INI panel without moving file persistence into the WASM core. |
 | `tests/browser/verify_ini_panel_browser.sh` | Validates the INI SDK, WASM module loading, OPFS text-file round trip, generic session snapshot round trip, machine file text round trip, and G-code text round trip in a real browser runtime. |
 | `tests/host/verify_host_smokes.sh` | Runs the current host-side Node, WASM interpreter-core, OPFS, and browser smoke validation with shared WASM builds. |
@@ -190,10 +191,11 @@ Negative fixtures currently cover:
 
 Current full-core validation is native-only. WASM/SDK validation covers the
 INI parser smoke harness and an initial interpreter-core canonical event smoke
-for `minimal_linear`. OPFS validation is limited to the JavaScript
-host-boundary adapter plus the INI browser smoke harness. Full browser
-coverage, full SDK coverage, and full machine-session validation remain future
-work.
+for `minimal_linear`, `arc_semantics`, `length_units`, `modal_incremental`,
+`plane_selection`, and `coordinate_offsets`. OPFS validation is limited to the
+JavaScript host-boundary adapter plus the INI browser smoke harness. Full
+browser coverage, full SDK coverage, and full machine-session validation remain
+future work.
 
 The current fixture expectations validate standalone behavior against both the
 vendored LinuxCNC source path and an upstream `rs274` side-by-side baseline for
diff --git a/wasm-port/tests/wasm/node/verify_interp_wasm.mjs b/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
index de2b9e6..7f25fa1 100644
--- a/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
+++ b/wasm-port/tests/wasm/node/verify_interp_wasm.mjs
@@ -40,23 +40,37 @@ const interp = await createLinuxCncInterpModule({
   },
 });
 
-const fixtureName = "minimal_linear";
-const programText = readFileSync(
-  resolve(rootDir, `tests/fixtures/gcode/${fixtureName}.ngc`),
-  "utf8",
-);
-const expectedEvents = readFileSync(
-  resolve(rootDir, `tests/fixtures/canon/${fixtureName}.events`),
-  "utf8",
-).trimEnd();
+const fixtureNames = [
+  "minimal_linear",
+  "arc_semantics",
+  "length_units",
+  "modal_incremental",
+  "plane_selection",
+  "coordinate_offsets",
+];
 
-const output = runProgram(interp, programText);
-const actualEventSet = new Set(
-  output.split("\n").filter((line) => line.startsWith("canon_event=")),
-);
-const expectedEventLines = expectedEvents.split("\n").filter(Boolean);
+for (const fixtureName of fixtureNames) {
+  const programText = readFileSync(
+    resolve(rootDir, `tests/fixtures/gcode/${fixtureName}.ngc`),
+    "utf8",
+  );
+  const expectedEvents = readFileSync(
+    resolve(rootDir, `tests/fixtures/canon/${fixtureName}.events`),
+    "utf8",
+  ).trimEnd();
 
-for (const expectedEvent of expectedEventLines) {
-  assert.equal(actualEventSet.has(expectedEvent), true, expectedEvent);
+  const output = runProgram(interp, programText);
+  const actualEventSet = new Set(
+    output.split("\n").filter((line) => line.startsWith("canon_event=")),
+  );
+  const expectedEventLines = expectedEvents.split("\n").filter(Boolean);
+
+  for (const expectedEvent of expectedEventLines) {
+    assert.equal(
+      actualEventSet.has(expectedEvent),
+      true,
+      `${fixtureName}: ${expectedEvent}`,
+    );
+  }
 }
 console.log("interp_wasm_node_smoke=ok");