fix(ci): run allocation gates on Node 26

src/data/focusAllocations.test.mjs

@@ -13,7 +13,7 @@ import { isCalibratedAllocationRuntime } from '../../scripts/run-unit-tests.mjs'
  */
 test('converged focus treatment stays within the GC-bracketed allocation budget', (t) => {
   if (!isCalibratedAllocationRuntime()) {
-    return t.skip(`allocation budgets are calibrated for Node 24; running ${process.versions.node}`);
+    return t.skip(`allocation budgets are calibrated for Node 24 or 26; running ${process.versions.node}`);
   }
   const result = spawnSync(
     process.execPath,

src/overlays/worldOverlayAllocation.test.mjs

@@ -333,7 +333,7 @@ function runAllocationProbe(entryCount, profile = 'generic') {
 for (const workload of WORKLOADS) {
   test(`steady moving-source frames stay in budget ${workload.name}`, (t) => {
     if (!CALIBRATED_ALLOCATION_RUNTIME) {
-      return t.skip(`allocation budgets are calibrated for Node 24; running ${process.versions.node}`);
+      return t.skip(`allocation budgets are calibrated for Node 24 or 26; running ${process.versions.node}`);
     }
     const payload = runAllocationProbe(workload.entries, workload.profile);
 

src/qaL9MatrixVerdicts.test.mjs

@@ -127,9 +127,10 @@ test('an unevaluable engines range reports unknown rather than guessing', () =>
 // A full pass run under `mise exec node@24 --` still re-execed system Node 25
 // through npm; the forced gate refused ("received 25.6.1") and A3 reported it
 // as a product failure. A3 now invokes the binary directly and checks it.
-test('only a parseable Node 24 counts as the calibrated allocation runtime', () => {
+test('every supported Node major counts as a calibrated allocation runtime', () => {
   assert.equal(isCalibratedAllocationRuntime('v24.19.0'), true);
   assert.equal(isCalibratedAllocationRuntime('24.19.0'), true, 'the v prefix is optional');
+  assert.equal(isCalibratedAllocationRuntime('v26.3.0'), true);
   assert.equal(isCalibratedAllocationRuntime('v25.6.1'), false, 'the npm re-resolution case');
   assert.equal(isCalibratedAllocationRuntime('v22.21.1'), false);
   for (const junk of ['', '   ', 'node', undefined, null]) {

src/unitTestRunner.test.mjs

@@ -7,7 +7,7 @@ import {
   ALLOCATION_TEST_FILES,
   UNIT_TEST_ROOTS,
   allocationTestArgs,
-  assertNode24AllocationRuntime,
+  assertCalibratedAllocationRuntime,
   buildUnitTestPlan,
   discoverUnitTestFiles,
   isCalibratedAllocationRuntime,
@@ -87,30 +87,27 @@ test('the runner discovers every test file in the repository', () => {
   }
 });
 
-test('allocation runtime calibration is explicit and pinned to Node 24', () => {
-  assert.equal(assertNode24AllocationRuntime('24.19.0'), '24.19.0');
+test('allocation runtime calibration covers both supported Node majors', () => {
+  assert.equal(assertCalibratedAllocationRuntime('24.19.0'), '24.19.0');
   assert.throws(
-    () => assertNode24AllocationRuntime('22.23.1'),
-    /calibrated Node 24 runtime/,
-  );
-  assert.throws(
-    () => assertNode24AllocationRuntime('26.0.0'),
-    /calibrated Node 24 runtime/,
+    () => assertCalibratedAllocationRuntime('22.23.1'),
+    /calibrated Node 24 or 26/,
   );
+  assert.equal(assertCalibratedAllocationRuntime('26.0.0'), '26.0.0');
   assert.equal(isCalibratedAllocationRuntime('24.19.0'), true);
   assert.equal(isCalibratedAllocationRuntime('22.23.1'), false);
-  assert.equal(isCalibratedAllocationRuntime('26.3.0'), false);
+  assert.equal(isCalibratedAllocationRuntime('26.3.0'), true);
 });
 
-test('npm test stays green on every supported engine, not only the calibrated one', () => {
+test('npm test calibrates both supported engines while retaining off-range warnings', () => {
   // package.json wiring: `npm test` must invoke this runner, and the engines
   // range it advertises must not be narrower than what the runner tolerates.
   const pkg = JSON.parse(readFileSync(new URL('../package.json', import.meta.url), 'utf8'));
   assert.equal(pkg.scripts.test, 'node scripts/run-unit-tests.mjs');
   const enginesNode = String(pkg.engines?.node || '');
   assert.ok(enginesNode, 'engines.node must be declared');
-  // The runner throws for uncalibrated runtimes ONLY behind the explicit
-  // opt-in env; by default it skips, so a supported non-24 engine cannot fail.
+  // Unsupported runtimes only skip probes without the explicit opt-in hard gate.
+  // Node 26 is calibrated and runs those probes with the same budgets.
   const runner = readFileSync(new URL('../scripts/run-unit-tests.mjs', import.meta.url), 'utf8');
   assert.match(runner, /GEV_REQUIRE_ALLOCATION_GATE/);
   assert.match(runner, /SKIPPED .*allocation microbenchmarks/);