fix: normalize wrapper-prefixed OMP/Pi terminal titles (#8033)

Multiplexer/session wrappers prefix pane titles as "prefix | pane-title", pushing the Pi/OMP identity after " | ". Inspect each " | " suffix and prefer a re-ownable compatible identity over the wrapper text, so wrapped OMP/Pi titles normalize to the owner instead of flickering. Includes guard tests for braille-inner labels and no-identity wrappers.

src/shared/agent-detection.test.ts

@@ -118,13 +118,26 @@ describe('Pi-compatible title detection', () => {
     ['π: tmp', 'omp', 'OMP ready'],
     ['\u280b π: tmp', 'omp', '\u280b OMP'],
     ['\u280b π - tmp', 'omp', '\u280b OMP'],
-    ['\u280b OMP', 'pi', '\u280b Pi']
+    ['\u280b OMP', 'pi', '\u280b Pi'],
+    ['lucky-echidna | \u283c π - Diagnose Orca terminal title flicker - test', 'omp', '\u280b OMP'],
+    ['lucky-echidna | Pi ready', 'omp', 'OMP ready'],
+    ['Codex | Pi ready', 'omp', 'OMP ready'],
+    // Why: the wrapped whole reads as a braille Claude title, but the re-ownable
+    // synthetic pane suffix must still win.
+    ['lucky-echidna | ⠋ OMP', 'omp', '⠋ OMP'],
+    ['lucky-echidna | \u283c π - Diagnose | test', 'omp', '\u280b OMP']
   ] as const)('normalizes %s to the authoritative %s owner', (title, owner, expectedTitle) => {
     expect(normalizeCompatibleAgentTitleForOwner(title, owner)).toBe(expectedTitle)
   })
 
   it('preserves Pi-compatible custom titles and unrelated owners', () => {
     expect(normalizeCompatibleAgentTitleForOwner('Fix pi bugs', 'omp')).toBe('Fix pi bugs')
+    // Why: a wrapped title with no re-ownable identity in any " | " segment
+    // passes through untouched instead of collapsing to the owner label.
+    expect(normalizeCompatibleAgentTitleForOwner('lucky-echidna | Fix pi bugs', 'omp')).toBe(
+      'lucky-echidna | Fix pi bugs'
+    )
+    expect(normalizeCompatibleAgentTitleForOwner('xxPi ready', 'omp')).toBe('xxPi ready')
     expect(normalizeCompatibleAgentTitleForOwner('\u280b Pi', 'codex')).toBe('\u280b Pi')
   })
 

src/shared/agent-title-owner.ts

@@ -9,14 +9,17 @@ import { isLegacyPiCompatibleTitle } from './pi-compatible-synthetic-title'
 
 type TitleProfileMatch = {
   profile: SyntheticAgentTitleProfile
+  sourceTitle: string
 }
 
+type TitleLabelProfileMatch = Pick<TitleProfileMatch, 'profile'>
+
 const COMPATIBLE_IDLE_TITLE_RE = /(?<![\w./\\-])(?:ready|idle|done)(?![\w-])/i
 
 /**
  * Resolves the synthetic title profile matching a given agent label.
  */
-function getProfileForTitleLabel(label: string | null): TitleProfileMatch | null {
+function getProfileForTitleLabel(label: string | null): TitleLabelProfileMatch | null {
   if (!label) {
     return null
   }
@@ -33,14 +36,35 @@ function getProfileForTitleLabel(label: string | null): TitleProfileMatch | null
  * Resolves the synthetic title profile matching a given terminal title.
  */
 function getProfileForTitle(title: string): TitleProfileMatch | null {
-  const labelProfile = getProfileForTitleLabel(getAgentLabel(title))
-  if (labelProfile) {
-    return labelProfile
+  // Multiplexers/session wrappers prefix dynamic titles with ` | `, so inspect
+  // each suffix to preserve the inner compatible agent identity.
+  const candidates = [title]
+  let wrapperSeparatorIndex = title.indexOf(' | ')
+  while (wrapperSeparatorIndex >= 0) {
+    const wrappedPaneTitle = title.slice(wrapperSeparatorIndex + 3).trim()
+    if (wrappedPaneTitle && !candidates.includes(wrappedPaneTitle)) {
+      candidates.push(wrappedPaneTitle)
+    }
+    wrapperSeparatorIndex = title.indexOf(' | ', wrapperSeparatorIndex + 3)
   }
-  if (isLegacyPiCompatibleTitle(title)) {
-    return getProfileForTitleLabel('Pi')
+
+  let fallback: TitleProfileMatch | null = null
+  for (const candidate of candidates) {
+    const labelProfile = getProfileForTitleLabel(getAgentLabel(candidate))
+    const legacyProfile = isLegacyPiCompatibleTitle(candidate)
+      ? getProfileForTitleLabel('Pi')
+      : null
+    const candidateProfile = labelProfile ?? legacyProfile
+    if (!candidateProfile) {
+      continue
+    }
+    const match = { ...candidateProfile, sourceTitle: candidate }
+    if (candidateProfile.profile.titleIdentityGroup) {
+      return match
+    }
+    fallback ??= match
   }
-  return null
+  return fallback
 }
 
 /**
@@ -132,7 +156,7 @@ export function normalizeCompatibleAgentTitleForOwner(
   ) {
     return title
   }
-  const sourceStatus = getSourceTitleStatus(title)
+  const sourceStatus = getSourceTitleStatus(source.sourceTitle)
   if (sourceStatus === 'working') {
     return `\u280b ${ownerProfile.workingLabel}`
   }
@@ -142,10 +166,10 @@ export function normalizeCompatibleAgentTitleForOwner(
   if (sourceStatus === 'idle') {
     return ownerProfile.idleLabel
   }
-  if (hasPermissionSuffix(title, source.profile)) {
+  if (hasPermissionSuffix(source.sourceTitle, source.profile)) {
     return ownerProfile.permissionLabel
   }
-  if (hasIdleSuffix(title, source.profile)) {
+  if (hasIdleSuffix(source.sourceTitle, source.profile)) {
     return ownerProfile.idleLabel
   }
   return ownerProfile.workingLabel