chore: clear dead test and allowlist leftovers of dropped runtimes

tests/update-context.test.cjs

@@ -148,10 +148,10 @@ describe('resolveUpdateContext: runtime probing + env overrides', () => {
     const fs = fakeFs({ [ver(custom)]: '1.41.0\n', [marker(custom)]: 'x' });
     const r = resolveUpdateContext({
       home: HOME, cwd: CWD, env: {}, fs,
-      preferredConfigDir: custom, preferredRuntime: 'kilo',
+      preferredConfigDir: custom, preferredRuntime: 'opencode',
     });
     assert.equal(r.scope, 'GLOBAL');
-    assert.equal(r.runtime, 'kilo');
+    assert.equal(r.runtime, 'opencode');
     assert.ok(sameDir(r.msdDir, custom), `msdDir was ${r.msdDir}`);
     assert.equal(r.installedVersion, '1.41.0');
   });
@@ -269,7 +269,7 @@ describe('msd-tools update-context (CLI): emits the JSON contract', () => {
       nodeFs.writeFileSync(path.join(tmp, 'msd-core', 'VERSION'), '1.42.0\n');
       nodeFs.writeFileSync(path.join(tmp, 'msd-core', 'workflows', 'update.md'), 'x');
       const r = runNode(
-        [MSD_TOOLS, 'update-context', '--config-dir', tmp, '--runtime', 'kilo', '--json'],
+        [MSD_TOOLS, 'update-context', '--config-dir', tmp, '--runtime', 'opencode', '--json'],
         { env: { ...process.env, MSD_TEST_MODE: '1' }, timeoutMs: PROBE_TIMEOUT_MS },
       );
       throwIfFailed(r, 'msd-tools update-context --json');
@@ -277,7 +277,7 @@ describe('msd-tools update-context (CLI): emits the JSON contract', () => {
       assert.deepEqual(Object.keys(ctx).sort(), ['installedVersion', 'msdDir', 'runtime', 'scope']);
       assert.equal(ctx.installedVersion, '1.42.0');
       assert.equal(ctx.scope, 'GLOBAL');
-      assert.equal(ctx.runtime, 'kilo');
+      assert.equal(ctx.runtime, 'opencode');
     } finally {
       cleanup(tmp);
     }
@@ -318,7 +318,7 @@ describe('resolveUpdateContext: parity with the old inline bash (adversarial-rev
     const custom = '/opt/msd-partial';
     const fs = fakeFs({ [ver(custom)]: '1.41.0\n' }); // marker absent
     const r = resolveUpdateContext({
-      home: HOME, cwd: CWD, env: {}, fs, preferredConfigDir: custom, preferredRuntime: 'kilo',
+      home: HOME, cwd: CWD, env: {}, fs, preferredConfigDir: custom, preferredRuntime: 'opencode',
     });
     assert.equal(r.installedVersion, '0.0.0', 'VERSION-only fast path must not be trusted');
     assert.equal(r.scope, 'GLOBAL');