fix(daemon): emit replaced telemetry on runtime unhealthy_resolver respawn

CodeRabbit: adapter-driven macOS resolver replacements forked a new daemon
without a lifecycle event. Emit trackDaemonReplaced (not retired) so field
diagnosis of #7936 covers the runtime path without mislabeling it as death.

src/main/daemon/daemon-init.test.ts

@@ -807,11 +807,13 @@ describe('daemon-init: runRestartDaemon (7-step sequence)', () => {
     await replacementAdapter.options.respawn?.('daemon_died')
     expect(originalSpawner.resetHandle).toHaveBeenCalledTimes(1)
     expect(originalSpawner.ensureRunning).toHaveBeenCalledTimes(1)
-    // STA-2376: an observed daemon death → respawn emits the retirement lifecycle event.
+    // STA-2376: death → respawn retires; runtime unhealthy_resolver is a replace (not a false death).
     expect(trackDaemonRetiredMock).toHaveBeenCalledWith('died_respawn')
     trackDaemonRetiredMock.mockClear()
+    trackDaemonReplacedMock.mockClear()
     await replacementAdapter.options.respawn?.('unhealthy_resolver')
     expect(trackDaemonRetiredMock).not.toHaveBeenCalled()
+    expect(trackDaemonReplacedMock).toHaveBeenCalledWith('unhealthy_resolver', 0)
     // Still only one spawner in the whole test — nobody new was constructed.
     expect(spawnerInstances).toHaveLength(1)
   })

src/main/daemon/daemon-init.ts

@@ -702,6 +702,9 @@ export async function initDaemonPtyProvider(
       if (reason === 'daemon_died') {
         console.warn('[daemon] Daemon process died — respawning')
         trackDaemonRetired('died_respawn')
+      } else if (reason === 'unhealthy_resolver') {
+        // Runtime resolver replace (adapter only fires when live sessions are verified empty). Not a death.
+        trackDaemonReplaced('unhealthy_resolver', 0)
       }
       newSpawner.resetHandle()
       await newSpawner.ensureRunning()
@@ -887,6 +890,9 @@ async function runRestartDaemon(): Promise<RestartDaemonResult> {
       if (reason === 'daemon_died') {
         console.warn('[daemon] Daemon process died — respawning')
         trackDaemonRetired('died_respawn')
+      } else if (reason === 'unhealthy_resolver') {
+        // Runtime resolver replace (adapter only fires when live sessions are verified empty). Not a death.
+        trackDaemonReplaced('unhealthy_resolver', 0)
       }
       currentSpawner.resetHandle()
       await currentSpawner.ensureRunning()

src/main/daemon/daemon-lifecycle-event.ts

@@ -9,8 +9,8 @@ import {
 } from '../../shared/daemon-lifecycle-telemetry'
 import { track } from '../telemetry/client'
 
-// Startup launcher replaced a still-connectable daemon. `versionSkew` = daemon's pid-file appVersion
-// differs from the current app (omit when the decision didn't hinge on version, e.g. a different app path).
+// Replaced a still-connectable daemon (startup launcher or runtime resolver-health path).
+// `versionSkew` = pid-file appVersion differs from current app (omit when not version-driven).
 export function trackDaemonReplaced(
   reason: DaemonReplaceReason,
   liveSessionCount: number | null,