diff --git a/src/main/daemon/daemon-pty-adapter-wsl-distro-loss.test.ts b/src/main/daemon/daemon-pty-adapter-wsl-distro-loss.test.ts
index 97bd84d5115..b5522ece232 100644
--- a/src/main/daemon/daemon-pty-adapter-wsl-distro-loss.test.ts
+++ b/src/main/daemon/daemon-pty-adapter-wsl-distro-loss.test.ts
@@ -2,10 +2,11 @@
 import { mkdtempSync, rmSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it, onTestFinished, vi } from 'vitest'
 import type { WslRunningDistrosRead } from '../wsl-background-distro-gate'
 import type { DaemonPtyAdapter } from './daemon-pty-adapter'
 import type { DaemonServer } from './daemon-server'
+import { setActiveSink } from '../observability/tracer'
 import { HistoryManager } from './history-manager'
 import { WslBridgeBootIdentity } from './daemon-wsl-bridge-boot-identity'
 import {
@@ -129,6 +130,13 @@ describe('a WSL bridge pane exit', () => {
 
   it('logs what the running list said, so a run can tell host loss from a raced reboot', async () => {
     const info = vi.spyOn(console, 'info').mockImplementation(() => {})
+    const spans: unknown[] = []
+    setActiveSink({
+      push: (span) => spans.push(span),
+      flush: () => {},
+      close: () => {}
+    })
+    onTestFinished(() => setActiveSink(null))
     for (const [distros, verdict] of [
       [[], 'lost'],
       [['Ubuntu'], 'running']
@@ -145,6 +153,12 @@ describe('a WSL bridge pane exit', () => {
           )
         )
       )
+      // Kept in the local trace too: a packaged build keeps no console (verify-18).
+      expect(spans.at(-1)).toMatchObject({
+        name: 'wsl.bridge-exit',
+        attributes: { verdict, code: 1 }
+      })
+      expect(JSON.stringify(spans.at(-1))).not.toContain('Ubuntu')
     }
   })
 
diff --git a/src/main/daemon/daemon-pty-adapter-wsl-sleep-cwd.test.ts b/src/main/daemon/daemon-pty-adapter-wsl-sleep-cwd.test.ts
index 27dcdf806ee..be388c6c594 100644
--- a/src/main/daemon/daemon-pty-adapter-wsl-sleep-cwd.test.ts
+++ b/src/main/daemon/daemon-pty-adapter-wsl-sleep-cwd.test.ts
@@ -3,6 +3,7 @@ import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { join } from 'node:path'
 import { readFileSync, rmSync } from 'node:fs'
 import { DaemonPtyAdapter } from './daemon-pty-adapter'
+import { setActiveSink } from '../observability/tracer'
 import type { DaemonServer } from './daemon-server'
 import { getHistorySessionDirName } from './history-paths'
 import { createMockSubprocess, startDaemonAdapterHarness } from './daemon-pty-adapter-test-harness'
@@ -88,11 +89,21 @@ describe('a sleeping bridge WSL pane keeps its shell folder', () => {
       rows: 24,
       cwd: WSL_CWD,
       env: { ORCA_PANE_KEY: PANE_KEY },
-      sessionId: 'repo::/repo@@spawned'
+      sessionId: 'repo::/home/jin/private-repo@@spawned'
     })
 
     const info = vi.spyOn(console, 'info').mockImplementation(() => {})
-    await adapter.shutdown(id, { immediate: true, keepHistory: true })
+    const spans: unknown[] = []
+    setActiveSink({
+      push: (span) => spans.push(span),
+      flush: () => {},
+      close: () => {}
+    })
+    try {
+      await adapter.shutdown(id, { immediate: true, keepHistory: true })
+    } finally {
+      setActiveSink(null)
+    }
 
     expect(readRows).toHaveBeenCalledWith('Ubuntu', expect.any(Number), { running: true })
     expect(checkpointCwd(id)).toBe(`${WSL_CWD}\\deep\\er`)
@@ -101,10 +112,29 @@ describe('a sleeping bridge WSL pane keeps its shell folder', () => {
       .filter((line) => line.includes('Sleep folder'))
     // One line per Sleep, naming the branch, what the distro returned and whether a folder came back.
     expect(lines).toHaveLength(1)
-    expect(lines[0]).toContain(`[history] Sleep folder for ${id}: wsl probe (budget `)
+    expect(lines[0]).toContain(`[history] Sleep folder for …@@spawned: wsl probe (budget `)
     expect(lines[0]).toContain(
       `rows 2, shells 1), distro Ubuntu, pane ${PANE_KEY}, live true, folder found in `
     )
+    // verify-18 (b): a packaged build keeps no console, so the same line goes to the local trace.
+    expect(spans).toContainEqual(
+      expect.objectContaining({
+        name: 'wsl.sleep-folder',
+        attributes: expect.objectContaining({
+          line: lines[0].replace(', distro Ubuntu', ''),
+          probe: 'wsl',
+          rows: 2,
+          shells: 1,
+          timedOut: false,
+          folderFound: true
+        })
+      })
+    )
+    // The trace persists, so it names neither the worktree path in the session id nor the distro.
+    const persisted = JSON.stringify(spans)
+    for (const segment of ['home', 'jin', 'private-repo', 'Ubuntu']) {
+      expect(persisted).not.toContain(segment)
+    }
   })
 
   // awin verify-9: panes cd'd before a relaunch and slept before the window reopened them
diff --git a/src/main/daemon/daemon-pty-adapter.ts b/src/main/daemon/daemon-pty-adapter.ts
index 19b614e34b7..0529bdf45cd 100644
--- a/src/main/daemon/daemon-pty-adapter.ts
+++ b/src/main/daemon/daemon-pty-adapter.ts
@@ -6,6 +6,7 @@ import {
 import { FENCED_TERMINATION_PROTOCOL_VERSION } from './daemon-protocol-version'
 import { emitPtyListeners, createPtyExitPayload } from './daemon-pty-listener-emission'
 import type { DaemonPtyRouterExitEvent } from './daemon-pty-router-events'
+import { logWslPaneDiagnostic } from './daemon-wsl-diagnostic-log'
 import { classifyWslBridgeExit, WSL_DISTRO_LOSS_EXIT_CODE } from './daemon-wsl-bridge-exit'
 import { isProvenProcessExit } from '../../shared/terminal-exit-cause'
 import { DaemonPtyDaemonRecovery } from './daemon-pty-daemon-recovery'
@@ -258,8 +259,14 @@ export class DaemonPtyAdapter extends DaemonPtyDaemonRecovery implements IPtyPro
     )
     // Lost, or booted again since the spawn, keeps the tab; an unanswered check reads as an exit.
     // The code shows a verify run which codes a terminate yields.
-    console.info(
-      `[pty] WSL bridge exit: ${verdict} (distro ${wslDistro}, code ${exit.code}, probe ${Math.round(performance.now() - exitAt)}ms)`
+    const probeMs = Math.round(performance.now() - exitAt)
+    logWslPaneDiagnostic(
+      'wsl.bridge-exit',
+      {
+        console: `[pty] WSL bridge exit: ${verdict} (distro ${wslDistro}, code ${exit.code}, probe ${probeMs}ms)`,
+        trace: `[pty] WSL bridge exit: ${verdict} (code ${exit.code}, probe ${probeMs}ms)`
+      },
+      { verdict, code: exit.code, probeMs }
     )
     // A spawn that replaced this incarnation meanwhile owns the session now.
     const current = this.sessionIncarnations.get(sessionId)
diff --git a/src/main/daemon/daemon-pty-session-control.ts b/src/main/daemon/daemon-pty-session-control.ts
index 9e861909097..7ffc85b46fc 100644
--- a/src/main/daemon/daemon-pty-session-control.ts
+++ b/src/main/daemon/daemon-pty-session-control.ts
@@ -8,7 +8,7 @@ import { remainingDaemonRequestTimeoutMs } from './daemon-request-deadline'
 import { readDaemonLiveSleepCwd } from './daemon-live-sleep-cwd'
 import type { ColdRestoreInfo } from './history-reader'
 import { normalizeWslColdRestoreCwd } from './wsl-cold-restore-cwd'
-import { describeSleepFolderRead, readDaemonWslSleepCwdWithFacts } from './daemon-wsl-sleep-cwd'
+import { logSleepFolderRead, readDaemonWslSleepCwdWithFacts } from './daemon-wsl-sleep-cwd'
 import * as unlistedSession from './daemon-unlisted-session'
 import { SessionNotFoundError, type ListSessionsResult } from './types'
 import { resolveSafePtyDefaultCwd } from '../providers/pty-default-cwd'
@@ -153,14 +153,13 @@ export abstract class DaemonPtySessionControl extends DaemonPtySessionInput {
           : { cwd: live ? await readDaemonLiveSleepCwd(this.client, id, opts.deadlineMs) : null }
       const sleepCwd = read.cwd
       // Device runs need to see why a WSL pane woke at its spawn folder (awin 5e).
-      console.info(
-        describeSleepFolderRead(id, read, {
-          wslDistro: sleepWslDistro,
-          paneKey: sleepPaneKey,
-          live,
-          elapsedMs: Date.now() - startedAt
-        })
-      )
+      const sleepFolder = {
+        wslDistro: sleepWslDistro,
+        paneKey: sleepPaneKey,
+        live,
+        elapsedMs: Date.now() - startedAt
+      }
+      logSleepFolderRead(id, read, sleepFolder)
       const committed = await this.runExclusiveCheckpoint(
         async () => {
           // Set inside: a caller past its deadline leaves this checkpoint running without it.
diff --git a/src/main/daemon/daemon-wsl-diagnostic-log.ts b/src/main/daemon/daemon-wsl-diagnostic-log.ts
new file mode 100644
index 00000000000..3a6b9ffc84a
--- /dev/null
+++ b/src/main/daemon/daemon-wsl-diagnostic-log.ts
@@ -0,0 +1,19 @@
+/**
+ * Device diagnosis of WSL panes: console output is not kept on a packaged build, so each line
+ * also goes to the local trace file (main.trace.ndjson, kept unless diagnostics are turned off).
+ */
+import { startSpan } from '../observability/tracer'
+
+/** `trace` is the persisted line, so it must carry no paths or distro names. */
+export function logWslPaneDiagnostic(
+  name: 'wsl.sleep-folder' | 'wsl.bridge-exit',
+  line: { console: string; trace: string },
+  attributes: Record<string, string | number | boolean | null>
+): void {
+  console.info(line.console)
+  try {
+    startSpan(name, { attributes: { line: line.trace, ...attributes } }).end()
+  } catch {
+    // Optional diagnostics must never fail a Sleep or an exit.
+  }
+}
diff --git a/src/main/daemon/daemon-wsl-sleep-cwd.ts b/src/main/daemon/daemon-wsl-sleep-cwd.ts
index 988bf3775ae..9e5200dfb59 100644
--- a/src/main/daemon/daemon-wsl-sleep-cwd.ts
+++ b/src/main/daemon/daemon-wsl-sleep-cwd.ts
@@ -1,7 +1,9 @@
 /** Bridge WSL bash lacks OSC 7; read its shell folder before Sleep so wake avoids the spawn folder. Failures retain the old fallback. */
 import { toWindowsWslUncPath } from '../../shared/wsl-paths'
+import { redactPtyIdForDiagnostics } from '../../shared/pty-delivery-diagnostics'
 import { paneShells, readWslGuestPaneProcesses } from '../wsl/wsl-guest-pane-processes'
 import { teardownReadBudgetMs } from './daemon-request-deadline'
+import { logWslPaneDiagnostic } from './daemon-wsl-diagnostic-log'
 
 // Reserve teardown time for the final checkpoint and kill when a distro does not answer.
 const READ_BUDGET_MS = 3_000
@@ -90,11 +92,45 @@ export async function readDaemonWslQuitCwds(
 export function describeSleepFolderRead(
   sessionId: string,
   read: DaemonWslSleepCwdRead | { cwd: string | null },
-  pane: { wslDistro?: string; paneKey?: string; live: boolean; elapsedMs: number }
+  pane: { wslDistro?: string; paneKey?: string; live: boolean; elapsedMs: number },
+  opts: { withDistro: boolean } = { withDistro: true }
 ): string {
   const probe =
     'rows' in read
       ? `wsl probe (budget ${read.budgetMs}ms, rows ${read.rows ?? 'none'}${read.timedOut ? ' timed out' : ''}, shells ${read.shells ?? 'none'})`
       : 'live probe'
-  return `[history] Sleep folder for ${sessionId}: ${probe}, distro ${pane.wslDistro ?? 'unknown'}, pane ${pane.paneKey ?? 'unknown'}, live ${pane.live}, folder ${read.cwd ? 'found' : 'not found'} in ${pane.elapsedMs}ms`
+  // The session id embeds the worktree path; the distro name can be personal (trace only).
+  const distro = opts.withDistro ? `, distro ${pane.wslDistro ?? 'unknown'}` : ''
+  return `[history] Sleep folder for ${redactPtyIdForDiagnostics(sessionId)}: ${probe}${distro}, pane ${pane.paneKey ?? 'unknown'}, live ${pane.live}, folder ${read.cwd ? 'found' : 'not found'} in ${pane.elapsedMs}ms`
+}
+
+export function logSleepFolderRead(
+  sessionId: string,
+  read: DaemonWslSleepCwdRead | { cwd: string | null },
+  pane: { wslDistro?: string; paneKey?: string; live: boolean; elapsedMs: number }
+): void {
+  logWslPaneDiagnostic(
+    'wsl.sleep-folder',
+    {
+      console: describeSleepFolderRead(sessionId, read, pane),
+      trace: describeSleepFolderRead(sessionId, read, pane, { withDistro: false })
+    },
+    sleepFolderAttributes(read, pane)
+  )
+}
+
+/** The same facts as the line, as fields a trace reader can filter on. */
+function sleepFolderAttributes(
+  read: DaemonWslSleepCwdRead | { cwd: string | null },
+  pane: { live: boolean; elapsedMs: number }
+): Record<string, string | number | boolean | null> {
+  return {
+    probe: 'rows' in read ? 'wsl' : 'live',
+    live: pane.live,
+    folderFound: read.cwd !== null,
+    elapsedMs: pane.elapsedMs,
+    ...('rows' in read
+      ? { rows: read.rows, shells: read.shells, timedOut: read.timedOut, budgetMs: read.budgetMs }
+      : {})
+  }
 }