Add provider key cycle stats reset handling

frontend/src/features/usage/utils/__tests__/poolTrace.spec.ts

@@ -189,7 +189,7 @@ describe('poolTrace', () => {
     expect(isAttemptedCandidate(buildCandidate({ status: 'unused' }))).toBe(false)
   })
 
-  it('shows only attempted pool children when attempted nodes exist', () => {
+  it('keeps skipped pool children visible when attempted nodes exist', () => {
     const attempts = buildPoolGroupVisibleAttempts([
       buildCandidate({
         id: 'cand-skipped',
@@ -210,10 +210,10 @@ describe('poolTrace', () => {
       }),
     ])
 
-    expect(attempts.map(item => item.id)).toEqual(['cand-failed', 'cand-success'])
+    expect(attempts.map(item => item.id)).toEqual(['cand-skipped', 'cand-failed', 'cand-success'])
   })
 
-  it('collapses all-skipped pool nodes to a single provider node', () => {
+  it('keeps all skipped pool children visible', () => {
     const attempts = buildPoolGroupVisibleAttempts([
       buildCandidate({
         id: 'cand-skipped-1',
@@ -227,6 +227,6 @@ describe('poolTrace', () => {
       }),
     ])
 
-    expect(attempts.map(item => item.id)).toEqual(['cand-skipped-2'])
+    expect(attempts.map(item => item.id)).toEqual(['cand-skipped-1', 'cand-skipped-2'])
   })
 })

frontend/src/features/usage/utils/__tests__/status.spec.ts

@@ -91,12 +91,19 @@ describe('usage status helpers', () => {
     expect(isUsageRecordFailed(record)).toBe(true)
   })
 
-  it('treats explicit success status code as authoritative for the timeline', () => {
+  it('prefers terminal request lifecycle status over status code for the timeline', () => {
     expect(resolveTimelineFinalStatus({
       traceFinalStatus: 'success',
       requestStatus: 'failed',
       statusCode: 200,
-    })).toBe('success')
+    })).toBe('failed')
+  })
+
+  it('prefers terminal trace status over status code when request lifecycle is absent', () => {
+    expect(resolveTimelineFinalStatus({
+      traceFinalStatus: 'failed',
+      statusCode: 200,
+    })).toBe('failed')
   })
 
   it('falls back to request lifecycle status when status code and trace are missing', () => {

frontend/src/features/usage/utils/poolTrace.ts

@@ -68,14 +68,7 @@ export const isAttemptedCandidate = (
 export function buildPoolGroupVisibleAttempts(
   attempts: CandidateRecord[],
 ): CandidateRecord[] {
-  if (attempts.length === 0) return []
-
-  const attempted = attempts.filter(isAttemptedCandidate)
-  if (attempted.length > 0) {
-    return attempted
-  }
-
-  return [attempts[attempts.length - 1]]
+  return attempts.filter(isPoolParticipatedCandidate)
 }
 
 export const parseTimelineStatus = (value: unknown): CandidateRecord['status'] | null => {

frontend/src/features/usage/utils/status.ts

@@ -272,8 +272,9 @@ export function resolveTimelineFinalStatus(params: {
   requestStatus?: RequestStatusLike
   statusCode?: number
 }): TimelineFinalStatus {
-  if (typeof params.statusCode === 'number') {
-    return params.statusCode >= 200 && params.statusCode < 400 ? 'success' : 'failed'
+  const requestStatus = mapRequestStatusToTimelineStatus(params.requestStatus)
+  if (requestStatus === 'success' || requestStatus === 'failed' || requestStatus === 'cancelled') {
+    return requestStatus
   }
 
   const traceStatus = normalizeTimelineFinalStatus(params.traceFinalStatus)
@@ -281,9 +282,8 @@ export function resolveTimelineFinalStatus(params: {
     return traceStatus
   }
 
-  const requestStatus = mapRequestStatusToTimelineStatus(params.requestStatus)
-  if (requestStatus === 'success' || requestStatus === 'failed' || requestStatus === 'cancelled') {
-    return requestStatus
+  if (typeof params.statusCode === 'number') {
+    return params.statusCode >= 200 && params.statusCode < 400 ? 'success' : 'failed'
   }
 
   if (params.hasPendingCandidates) {