[KANDEV-W-093] Backend early exit after sync #66

New Issue

2026-10-11T00:27:56+09:00

dreampiler commented

2026-10-11 00:27:56 +09:00

소유자 목표: 운영 세션 → Kandev 관제(2026-10-11) 「28153fb7f7 빌드를 격리 인스턴스에서 띄워 백엔드 stderr·종료 코드를 잡고, 몇 분 안에 꺼지는지 재현해 원인 커밋을 찾는다」.
확인할 결과: 새 판의 조기 종료가 격리된 실제 기동 경로에서 재현되고 종료 코드·stderr와 원인 커밋이 확정되며, 확인된 원인의 최소 수정과 해소 근거가 정상 fork workflow로 전달된다.
queue: KANDEV-W-093

This task owns one backend early-exit defect after installing fork main28153fb7f71dceafecfb970f9c1af46c4b4719fe. It is distinct from W092d26270f9's agentctl event-wide stall: that incident had a live backend and responsive GET; here kandev.exe disappears and health connection is refused. Coordinate only if causal evidence establishes overlap. Current five-workflow/title and canonical p320 duplicate checks found no matching item; do not register another defect for this same symptom.

Operations-provided incident timeline, to verify against supplied artifacts:

2026-10-10 23:57KST replacement with28153fb7f7/#217, versionv0.97.0-482-g28153fb7f7. 2026-10-11 00:00:17health200.
Around00:02 backend stopped responding; existing stall routine restarted00:03. Backend started00:04:12, then disappeared after00:04:42 without further logs. No kandev.exe process, desktop remained, health connection refused.
No panic/fatal in backend log and no Windows Application crash event. Console logging is warn, so the supplied record does not capture decisive stderr. Absence of such logs is not proof of graceful exit or of no panic.
Operations rolled back00:08 to prod-backup-28153fb7f7-20261010(the prior hotfix install);00:10health200, process remains, occasional10shealth latency. Operations woke11interrupted primary sessions. Current operating runtime API was read by controller as commitc8bcf5e2931549665213816267403e94f6c421f7, started2026-10-10T15:09:54Z. #217 merge ancestry to runtime exit1; new fixes are not operationally verified.
Candidate set supplied by operations: upstream22commits including4377agentctl tokenless auth,3940model discovery,4373profile order,3243transfer, and fork211/214/215. W089's pinned sync report counted20upstream commits at02ff057835. Resolve actual comparison SHAs/ranges and explain the count difference; do not assume either headline count or blame a named PR.

Required work:

Use the ALREADY BUILT release at D:\260720_Ai_Workspace_Tools\kandev-release\28153fb7f7\bin first. Read assigned repository/scoped AGENTS, existing scripts/dev-isolated.ps1 and relevant launcher/backend lifecycle design/debug guidance. Do not rebuild merely to establish the first reproduction. Preserve the exact binary/revision provenance and launch arguments.
Start only an isolated instance through the existing dev-isolated.ps1 procedure: separate port, home and DB from operating38430/~/.kandev. Capture backend stderr/stdout and actual backend exit code, distinguishing launcher/desktop parent exit from the backend process exit. Use task-owned temporary logs/PID records and existing script controls, no new permanent harness, monitoring service, test collection or CI. No visible console windows; use approved hidden background startup and bounded readiness/exit checks. Retain every PID/session handle and complete or report its actual status.
Reproduce startup through the original entrypoint and observe the few-minute failure window. Record precise elapsed interval/exit status/last emitted error; if it stays alive, report that limited observation rather than declaring this operating defect fixed. Scope optional config/state comparison only to the reproduced failure.
The owner allows copying operating DB when needed, READ-ONLY source and copy only. Use an existing consistent snapshot/backup mechanism where available; never write/migrate/VACUUM/lock/change permissions on operating DB or start test instance against it. Validate separate resolved home/DB/port before launch. Copied state/config must not launch new live Office runs/agent/provider work; use existing isolated/mock/disabled scheduling controls and document relevant differences. No paid provider calls, secrets in output, credentials/production settings changes or operating process termination. Do not weaken or disable a suspected causal path simply to produce a PASS.
Once actual stderr/exit evidence identifies a candidate path, compare the real old/new commit range in the assigned worktree. Inspect relevant upstream history read-only and preserve fork fixes. Use a small isolated causal comparison or bounded bisection only as needed; avoid whole-suite rebuild/test loops. Isolated old/new comparison is not a next operating replacement.
Establish the responsible commit/path and minimal evidence-based fix plan, preserving source lifecycle/auth/security invariants. Follow normal Plan/review/implementation gates; do not change production/permanent tests on a hypothesis. Bring material design/scope uncertainty or missing decisive artifact to ask_parent_question_kandev. Once cause/fix scope is established within the authorized defect, use source-adjacent tests only for changed logic and narrow affected Go build/vet/tests. No unrelated refactor, blanket instrumentation, standing regression/e2e framework or full suite.
Confirm the fix via the same isolated entrypoint and failure trigger; fork PR only(--repo dreampiler/kandev). Report cause, culprit commit, exact stderr/exit result, minimal change, validation limits and merge/remaining input. This does not authorize operating rollout or any upstream publication. A missing crash/dump stays explicitly unconfirmed; no synthetic-success claim.

Execution: standing parent8e3eb6b7-f0fb-4d79-a954-69aeab00993a, Kandev workspace94852851-6893-4289-908a-53022d15fd68, repository068d4436-d120-42af-b178-8e1a45eb2279, explicit Worktree08eb0bba-37dc-459c-b34c-14322417bde7/new_workspace/forkmain. Use the assigned task worktree only. No shared checkout Git/file writes or second worktree; if materialized environment is shared/Local, stop writes and report.
Design basis: design-card invariant5(설계카드.md:32) and Agent Manager source pointer(설계색인.md:18), launcher unified-native-binary architecture in repo AGENTS, docs/ARCHITECTURE.md Current Architecture/Agent Manager and existing isolation script. Read relevant source in your worktree; root controller does no code/log investigation.
Operations owns restart/rollback/next deployment. NEXT OPERATING REPLACEMENT IS BLOCKED until this cause is confirmed and fixed. Keep230verification list unchanged and held;207dashboard and today's merges are not installed PASS. W055OpenCode confirmation is separate. Do not move/restart/stop W091(the permanent fixed Opus owner) or W089/W090/W092/230.
All kdlbs/kandev writes belong solely to fixed Opus ownerW0916f198197-cd2e-40d5-af27-fefd1d5813c6. This investigation may read upstream only; fork delivery remains normal.
Cleanup: only your task-owned isolated processes/PID files/temporary artifacts; verify exact literal targets and current ownership/use, preserve uncertain data, use existing recycle procedure. No reset--hard/force/permanent variable/glob deletion, shared Temp worktree, drive/home scan or bin emptying.
Reporting through existing report-progress for KANDEV-W-093 when actual progress is ready; no fabricated PR/empty commit/new audit ledger. Source operation/user incident facts are not independent worker measurements.

소유자 목표: 운영 세션 → Kandev 관제(2026-10-11) 「28153fb7f7 빌드를 격리 인스턴스에서 띄워 백엔드 stderr·종료 코드를 잡고, 몇 분 안에 꺼지는지 재현해 원인 커밋을 찾는다」. 확인할 결과: 새 판의 조기 종료가 격리된 실제 기동 경로에서 재현되고 종료 코드·stderr와 원인 커밋이 확정되며, 확인된 원인의 최소 수정과 해소 근거가 정상 fork workflow로 전달된다. queue: KANDEV-W-093 This task owns one backend early-exit defect after installing fork main28153fb7f71dceafecfb970f9c1af46c4b4719fe. It is distinct from W092d26270f9's agentctl event-wide stall: that incident had a live backend and responsive GET; here kandev.exe disappears and health connection is refused. Coordinate only if causal evidence establishes overlap. Current five-workflow/title and canonical p320 duplicate checks found no matching item; do not register another defect for this same symptom. Operations-provided incident timeline, to verify against supplied artifacts: - 2026-10-10 23:57KST replacement with28153fb7f7/#217, versionv0.97.0-482-g28153fb7f7. 2026-10-11 00:00:17health200. - Around00:02 backend stopped responding; existing stall routine restarted00:03. Backend started00:04:12, then disappeared after00:04:42 without further logs. No kandev.exe process, desktop remained, health connection refused. - No panic/fatal in backend log and no Windows Application crash event. Console logging is warn, so the supplied record does not capture decisive stderr. Absence of such logs is not proof of graceful exit or of no panic. - Operations rolled back00:08 to prod-backup-28153fb7f7-20261010(the prior hotfix install);00:10health200, process remains, occasional10shealth latency. Operations woke11interrupted primary sessions. Current operating runtime API was read by controller as commitc8bcf5e2931549665213816267403e94f6c421f7, started2026-10-10T15:09:54Z. #217 merge ancestry to runtime exit1; new fixes are not operationally verified. - Candidate set supplied by operations: upstream22commits including4377agentctl tokenless auth,3940model discovery,4373profile order,3243transfer, and fork211/214/215. W089's pinned sync report counted20upstream commits at02ff057835. Resolve actual comparison SHAs/ranges and explain the count difference; do not assume either headline count or blame a named PR. Required work: 1. Use the ALREADY BUILT release at D:\260720_Ai_Workspace_Tools\kandev-release\28153fb7f7\bin first. Read assigned repository/scoped AGENTS, existing scripts/dev-isolated.ps1 and relevant launcher/backend lifecycle design/debug guidance. Do not rebuild merely to establish the first reproduction. Preserve the exact binary/revision provenance and launch arguments. 2. Start only an isolated instance through the existing dev-isolated.ps1 procedure: separate port, home and DB from operating38430/~/.kandev. Capture backend stderr/stdout and actual backend exit code, distinguishing launcher/desktop parent exit from the backend process exit. Use task-owned temporary logs/PID records and existing script controls, no new permanent harness, monitoring service, test collection or CI. No visible console windows; use approved hidden background startup and bounded readiness/exit checks. Retain every PID/session handle and complete or report its actual status. 3. Reproduce startup through the original entrypoint and observe the few-minute failure window. Record precise elapsed interval/exit status/last emitted error; if it stays alive, report that limited observation rather than declaring this operating defect fixed. Scope optional config/state comparison only to the reproduced failure. 4. The owner allows copying operating DB when needed, READ-ONLY source and copy only. Use an existing consistent snapshot/backup mechanism where available; never write/migrate/VACUUM/lock/change permissions on operating DB or start test instance against it. Validate separate resolved home/DB/port before launch. Copied state/config must not launch new live Office runs/agent/provider work; use existing isolated/mock/disabled scheduling controls and document relevant differences. No paid provider calls, secrets in output, credentials/production settings changes or operating process termination. Do not weaken or disable a suspected causal path simply to produce a PASS. 5. Once actual stderr/exit evidence identifies a candidate path, compare the real old/new commit range in the assigned worktree. Inspect relevant upstream history read-only and preserve fork fixes. Use a small isolated causal comparison or bounded bisection only as needed; avoid whole-suite rebuild/test loops. Isolated old/new comparison is not a next operating replacement. 6. Establish the responsible commit/path and minimal evidence-based fix plan, preserving source lifecycle/auth/security invariants. Follow normal Plan/review/implementation gates; do not change production/permanent tests on a hypothesis. Bring material design/scope uncertainty or missing decisive artifact to ask_parent_question_kandev. Once cause/fix scope is established within the authorized defect, use source-adjacent tests only for changed logic and narrow affected Go build/vet/tests. No unrelated refactor, blanket instrumentation, standing regression/e2e framework or full suite. 7. Confirm the fix via the same isolated entrypoint and failure trigger; fork PR only(--repo dreampiler/kandev). Report cause, culprit commit, exact stderr/exit result, minimal change, validation limits and merge/remaining input. This does not authorize operating rollout or any upstream publication. A missing crash/dump stays explicitly unconfirmed; no synthetic-success claim. Execution: standing parent8e3eb6b7-f0fb-4d79-a954-69aeab00993a, Kandev workspace94852851-6893-4289-908a-53022d15fd68, repository068d4436-d120-42af-b178-8e1a45eb2279, explicit Worktree08eb0bba-37dc-459c-b34c-14322417bde7/new_workspace/forkmain. Use the assigned task worktree only. No shared checkout Git/file writes or second worktree; if materialized environment is shared/Local, stop writes and report. Design basis: design-card invariant5(설계카드.md:32) and Agent Manager source pointer(설계색인.md:18), launcher unified-native-binary architecture in repo AGENTS, docs/ARCHITECTURE.md Current Architecture/Agent Manager and existing isolation script. Read relevant source in your worktree; root controller does no code/log investigation. Operations owns restart/rollback/next deployment. NEXT OPERATING REPLACEMENT IS BLOCKED until this cause is confirmed and fixed. Keep230verification list unchanged and held;207dashboard and today's merges are not installed PASS. W055OpenCode confirmation is separate. Do not move/restart/stop W091(the permanent fixed Opus owner) or W089/W090/W092/230. All kdlbs/kandev writes belong solely to fixed Opus ownerW0916f198197-cd2e-40d5-af27-fefd1d5813c6. This investigation may read upstream only; fork delivery remains normal. Cleanup: only your task-owned isolated processes/PID files/temporary artifacts; verify exact literal targets and current ownership/use, preserve uncertain data, use existing recycle procedure. No reset--hard/force/permanent variable/glob deletion, shared Temp worktree, drive/home scan or bin emptying. Reporting through existing report-progress for KANDEV-W-093 when actual progress is ready; no fabricated PR/empty commit/new audit ledger. Source operation/user incident facts are not independent worker measurements.

dreampiler commented

2026-10-11 02:07:49 +09:00

temp

dreampiler commented

2026-10-11 03:02:21 +09:00

temp-check

dreampiler commented

2026-10-11 03:03:05 +09:00

[W-093] replacement ready. PR dreampiler/kandev#218 MERGED 2026-10-10T16:51:29Z, full merge SHA 7493cda71f1e23fcc948ae39d6e1e34966d8ef39 (squash = PR head 00945864c2, diff empty 확인). 병합판 빌드로 동일 dev-isolated 경로(port 48521, fresh DB) 격리 기동, 동일 backend PID 19480이 37.6분 연속 무종료(/health 200 유지, stderr 0B, panic 없음). 미수정 release는 63초에 exit 2 자멸. 원인: fork #43의 ReadRuntimeFootprints 직접 r.ctl 호출 + upstream #3598의 nil static ctl + runtimeOwner 생성 경로 충돌(merge-base 재확인: 613d6205f5는旧 baseline 포함, 349f61bc52는 새 upstream에만 존재). 최소 수정: acquireControl 경유 + ErrRuntimeUnavailable fail-closed, 동행 시험 2건 ok. 한계: 로컬 build-kandev 산출물(embedded web 자산은 release와 다름), fresh DB 검증, cursor-MCP 패키지 전체 hang은 기존 환경성. 남은 것: 격리 home C:\Users\dream.kandev-test-48521-809398b0 잔존(recycle 보호경로 거부) — 관제 판단 필요. 후속 제안: 운영 교체는 관제 소유 절차로.

[W-093] replacement ready. PR dreampiler/kandev#218 MERGED 2026-10-10T16:51:29Z, full merge SHA 7493cda71f1e23fcc948ae39d6e1e34966d8ef39 (squash = PR head 00945864c2, diff empty 확인). 병합판 빌드로 동일 dev-isolated 경로(port 48521, fresh DB) 격리 기동, 동일 backend PID 19480이 37.6분 연속 무종료(/health 200 유지, stderr 0B, panic 없음). 미수정 release는 63초에 exit 2 자멸. 원인: fork #43의 ReadRuntimeFootprints 직접 r.ctl 호출 + upstream #3598의 nil static ctl + runtimeOwner 생성 경로 충돌(merge-base 재확인: 613d6205f5는旧 baseline 포함, 349f61bc52는 새 upstream에만 존재). 최소 수정: acquireControl 경유 + ErrRuntimeUnavailable fail-closed, 동행 시험 2건 ok. 한계: 로컬 build-kandev 산출물(embedded web 자산은 release와 다름), fresh DB 검증, cursor-MCP 패키지 전체 hang은 기존 환경성. 남은 것: 격리 home C:\Users\dream\.kandev-test-48521-809398b0 잔존(recycle 보호경로 거부) — 관제 판단 필요. 후속 제안: 운영 교체는 관제 소유 절차로.

dreampiler commented

2026-10-13 11:37:40 +09:00

[W-093 판정 2026-10-13, 작업 8b5c4925] 해소. 근거: #218 7493cda71f 가 fork main 과 운영 빌드 0d12c83d82 의 조상(merge-base 확인). apps/backend/internal/agent/runtime/lifecycle/executor_standalone.go:423-430 ReadRuntimeFootprints 가 acquireControl 경유. 운영 0d12c83d82 started_at 2026-10-12T22:51:15Z, 2026-10-13T02:22Z 관측 시 응답(약 3.5h 생존; 원 증상은 기동 후 약 1분 내 종료). 10-12 재시작(71d83c6d)은 stall 재시작으로 보이며 별도 소관(추정). 잔여 산출물: 격리 홈 C:\Users\dream.kandev-test-48521-809398b0 은 W-090 남은 목록 E 로 넘김.

[W-093 판정 2026-10-13, 작업 8b5c4925] 해소. 근거: #218 7493cda71f 가 fork main 과 운영 빌드 0d12c83d82 의 조상(merge-base 확인). apps/backend/internal/agent/runtime/lifecycle/executor_standalone.go:423-430 ReadRuntimeFootprints 가 acquireControl 경유. 운영 0d12c83d82 started_at 2026-10-12T22:51:15Z, 2026-10-13T02:22Z 관측 시 응답(약 3.5h 생존; 원 증상은 기동 후 약 1분 내 종료). 10-12 재시작(71d83c6d)은 stall 재시작으로 보이며 별도 소관(추정). 잔여 산출물: 격리 홈 C:\Users\dream\.kandev-test-48521-809398b0 은 W-090 남은 목록 E 로 넘김.

dreampiler closed this issue

2026-10-13 11:38:09 +09:00

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Reference: dreampiler/kandev#66