refactor: drop the earlier legacyQuiescent option name

__tests__/runtime-control.test.ts

@@ -264,8 +264,7 @@ describe('runtime identity and readiness', () => {
     },
   );
 
-  it.each(['oldServersStopped', 'legacyQuiescent'] as const)(
-    'preserves a legacy daemon by default, then stops it only after %s is set', async (option) => {
+  it('preserves a legacy daemon by default, then stops it only after oldServersStopped is set', async () => {
     const actor = spawn(process.execPath, [path.resolve(__dirname, 'fixtures/runtime-control-daemon.cjs'),
       root, getDaemonSocketPath(root), 'legacy', path.resolve(__dirname, '../dist/mcp/writer-lock.js')],
       { stdio: ['ignore', 'ignore', 'pipe', 'ipc'] });
@@ -276,7 +275,7 @@ describe('runtime identity and readiness', () => {
     expect(actor.exitCode).toBeNull();
     expect(fs.readFileSync(getDaemonPidPath(root), 'utf8')).toBe(before);
     const exited = once(actor, 'exit');
-    expect(await stopRuntime(root, { [option]: true })).toMatchObject({ pid: actor.pid, outcome: 'term' });
+    expect(await stopRuntime(root, { oldServersStopped: true })).toMatchObject({ pid: actor.pid, outcome: 'term' });
     await exited;
     const lease = reserveRuntimeWriter(root, process.pid);
     expect(lease).not.toBeNull();

site/src/content/docs/reference/api.md

@@ -125,8 +125,7 @@ By default, stop preserves a live daemon without writer coordination protocol
 old-version MCP session and every direct or fallback writer for that project is
 stopped. The daemon serving the project is excluded because `stopRuntime` stops
 it. Daemon death alone does not establish that. A restored old-version daemon needs the
-same explicit confirmation before another promotion. `{legacyQuiescent: true}`
-is the earlier spelling of the same option.
+same explicit confirmation before another promotion.
 
 Keep the reservation value unchanged. Its generation distinguishes successive
 reservations held by one PID. Claim it in the daemon bootstrap, then run the

src/runtime-control.ts

@@ -36,16 +36,15 @@ export async function getRuntimeIdentity(projectRoot: string, options: { timeout
  * Refuse live writers that predate the coordination protocol unless the caller
  * confirms every other old-version server for the project has been stopped. The
  * daemon this call stops is not part of that confirmation.
- * `legacyQuiescent` is the earlier name for `oldServersStopped`.
  */
 export async function stopRuntime(
   projectRoot: string,
-  options: { oldServersStopped?: boolean; legacyQuiescent?: boolean } = {},
+  options: { oldServersStopped?: boolean } = {},
 ): Promise<StopResult> {
   projectRoot = canonicalProjectRoot(projectRoot);
   return stopDaemonAt(projectRoot, {
     preserveUnverified: true,
-    requireWriterProtocol: !(options.oldServersStopped ?? options.legacyQuiescent),
+    requireWriterProtocol: !options.oldServersStopped,
   });
 }