Date: 2026-09-08. Retrospective investigation only; no product changes or new test runs.
Mission: upgrade-preview-mission-health-01M1V6E1, subsequently numbered 199. Implementation: PR #3923. Closeout and remediation: PR #3999.
This mission took 33h49m51s from recorded work start to final closeout merge. That is too long to regard as a successful execution process simply because the eventual checks passed. The work was substantial, but the execution plan deferred its highest-risk integration until late, multiplied coordination around small repairs, and discovered required gate failures after the implementation merged.
Why it’s slow: owner components passed individually but failed when composed. We’ve repeatedly added narrowly scoped fixes. Too much sequential investigation and coordination has delayed WP10’s end-to-end implementation.
This is the primary causal finding, not an incidental process complaint. The quote is my contemporaneous explanation at 2026-09-07 15:03:58 UTC, not a retrospective reconstruction. Parent log, line 18559.
The previous 25h52m elapsed-time report was wrong as a wall-clock statement. It came from tool-accounted elapsed time. GitHub merge timestamps and the session start establish approximately 33h50m. Mission birth-to-closeout is approximately 33h45m27s. Neither number represents uninterrupted working time.
Read the mission plan, task/review records, generated retrospective, external friction ledger, checkpoint, integration diagnoses, and actual Codex JSONL logs. A deterministic analyzer extracted public messages, tool calls/results, and canonical work-package transitions. It excluded private reasoning, duplicate event-message representations, and this September 8 retrospective session.
Scope: parent and directly related child sessions active during 2026-09-06 11:03:13 through 2026-09-07 20:54:30 UTC. The 47 active session records include supporting investigation and repair, not 47 simultaneously active agents. Further descendants, if any, are not counted.
Artifacts:
- Reproducible analyzer
- Session counters
- Canonical WP transitions
- Friction ledger
- Generated retrospective
- Final mission review
The canned log-failure scanner was insufficient: its four matching raw records preceded mission start and are not evidence of four mission failures. Structured timeline analysis and concrete reproductions provide the findings here. Raw derived messages/calls remain local; they are not intended for publication.
All times UTC. Durations below are calendar intervals, not exclusive labor totals.
| Milestone | Time | Interpretation |
|---|---|---|
| Recorded work start | Sep 6, 11:03:13 | Start of reconstructed mission window |
| Mission birth | Sep 6, 11:07:38 | Canonical mission creation |
| First WP implementation starts | Sep 6, 13:45:42 | About 2h43m of preparation/planning before implementation |
| WP09 starts | Sep 6, 14:51:49 | Provisioning later becomes critical-path dependency |
| WP09 third rejection | Sep 6, 19:49:20 | Repeated-save YAML comment loss; further correction escalated |
| WP09 resumes | Sep 7, 07:32:39 | 11h43m between third rejection and correction restart |
| WP09 approved | Sep 7, 08:02:39 | Focused correction and acceptance complete |
| WP10 starts | Sep 7, 08:05:24 | 21h02m after recorded work start |
| Observed worker credit error | Sep 7, 12:51:39 | Author cannot continue through agent route |
| User says to work inline | Sep 7, 15:04:25 | About 2h13m after that observed error |
| WP10 approved | Sep 7, 16:02:30 | 7h57m from its first in-progress transition |
| WP13 approved | Sep 7, 16:58:01 | Focused acceptance, not entire original matrix |
| Implementation PR merges | Sep 7, 18:31:37 | Full architectural gate not yet established green |
| Full architectural result reported green | Sep 7, 20:43:48 | After post-merge remediation |
| Closeout PR merges | Sep 7, 20:53:05 | 33h49m51s after recorded work start |
The three non-overlapping coarse phases are 21h02m before WP10 starts, 7h57m until WP10 approval, and 4h51m thereafter. The WP09 and credit intervals are nested within those phases; do not add them again. Other work continued during parts of the WP09 interval. The logs do not support labeling all 11h43m as idle time or assigning it wholly to the user. Similarly, the credit interval proves an interruption, not that every minute was externally unavoidable.
The decomposition assigned strong local ownership, then left aggregate behavior to WP10/WP13. That protected boundaries but delayed discovery of interactions. The plan explicitly reserved public integrated evidence for those later packages. An early oracle existed; an early working composition did not.
The missing contract was not merely a method signature. It was how retained assessments remain valid when another approved owner performs an expected write: configuration transitions, shared physical directory creation, directory mtime changes, rendering inputs, effect ordering, and refusal before partial mutation.
Concrete sequence:
| Evidence | What failed | Why local green was insufficient |
|---|---|---|
| F040 | Actual dispatcher wrote eight global paths before rejecting changed project input | Direct paired-apply tests bypassed the failing dispatcher route |
| F047 | Provisioning invalidated the command owner's retained config observation | The owner had not consumed the actual prior owner's legitimate transition |
| F048 | Managed installation then rejected the analogous provisioning transition | The same class was investigated in the next owner only after the first repair |
| F050 | Two owners claimed creation of the same skill parent; existing-parent ordering also invalidated observations | Individually valid effects were not jointly executable |
| F053 | Selected bundle staging invalidated config/root observations | More cross-owner state transitions remained outside the prior fix |
References: F040, F047-F050, selected-bundle diagnosis.
The bundle diagnostic is especially revealing: four diagnostic assertions passed, but they represented three product refusals and one successful apply. One path wrote 214 expected bundle effects before command repair refused the changed project-root observation. A passing diagnostic count was not product green.
The first command-provisioning failure should have triggered a bounded scan of all owners consuming the same config and ancestor observations. Instead, command, managed, shared-parent, and bundle repairs became successive handoffs. These were related symptoms of an incomplete composition contract.
A typical repair required a reproduction, parent triage, Spec Kitty Op, separate worktree/environment, original-owner resume, implementation, independent review, parent integration, and another consumer run. Traceability was useful; repeating the entire chain for adjacent symptoms was expensive.
WP10 was explicitly paused for an owner API, even though an integration harness, remaining public routes, and the rest of the transition matrix could have advanced. At 12:46 on Sep 7 the parent still reported that WP10 had no new source changes. Log line 16049, log line 18440.
The log counters show the scale, not a precise wasted-time calculation:
- 9,207 outer tool calls across 47 active related sessions.
- Parent: 3,187 outer calls, including 314 wait and 86 sleep calls.
- Parent exec inputs contain 1,121 write_stdin call occurrences.
- 69 compactions across the selected sessions; 16 in the parent.
- 610 tool outputs contain the word "truncated"; this is a heuristic, not 610 proven lost outputs.
- Canonical WP history records 25 implementation/review attempts for 13 WPs: 12 additional attempts, before accounting for off-WP supporting Ops.
Polling is sometimes necessary and cached context is not equivalent to new work. These figures do not establish monetary cost or exclusive wasted hours. They do show that increasing agent count did not remove parent coordination as a bottleneck. The 82 KB friction ledger and roughly 202 KB checkpoint also created a substantial context-recovery burden.
A one-file formatting correction received its own repair/review path (F052). The required checks should have been automated at handoff instead. The user requested Spec Kitty Ops; using them was correct. Excessively fragmenting the repair work was my orchestration choice, not an inevitable consequence of Ops.
The user's concern about diminishing returns arrived Sep 6 at 19:37. Parent log line 11296.
WP09's rejections were not stylistic:
- Cycle 1 found invalid YAML handling and comment/key preservation failures.
- Cycle 2 showed the narrow corrections did not cover the wider valid-YAML class.
- Cycle 3 found comment loss after saving the same loaded document repeatedly.
- The authorized final correction covered repeated saves and directives; its independent review reused unchanged evidence and approved a focused fix.
Refusing to approve data loss was right. Discovering these cases serially was not. After the second rejection, the right response was a defect-class model covering YAML shapes and document lifecycle, not another patch to only the latest example.
The third rejection triggered arbitration and an 11h43m restart interval. The recorded escalation policy explains the stop but does not make that delivery latency desirable. A critical-path escalation needs an explicit decision request, immediate impact notice, and useful independent work while waiting.
The final correction took roughly 30 minutes from restart to approval. That supports focused re-review with reused evidence; it does not establish that the earlier defects could all have been fixed in 30 minutes.
The ledger contains 59 numbered friction entries, not 59 independent product bugs. They mix product defects, repeat occurrences, operator mistakes, and environment issues.
Significant product/workflow friction included degraded governance payloads, placeholder phase prompts, branch/coordination state mismatches, finalizer slicing restrictions, repeated stale planning bases, and shared command inventory changes. These consumed attention while dogfooding the same system being repaired.
Isolation problems also caused misleading failures: shared SPEC_KITTY_HOME under xdist despite HOME isolation, sandbox/PTTY differences, real-validator behavior, and Windows directory modes. These warranted fixes, not blanket test waivers.
The credit error was external. Repeatedly attempting the same failed author route after the user offered credits was not a productive fallback. Once the user directed inline work, I should have immediately continued from preserved evidence, rather than treating agent availability as a necessary dependency.
The organization rename and stale downstream CI pins caused additional lookup/ integration friction, but evidence does not justify calling either a primary cause.
The implementation PR merged at 18:31; the parent announced full contract, architecture and canonical E2E gates running at 18:48. Parent log line 22880.
The architecture gate then exposed failures requiring a separate remediation Op. This was a merge-readiness failure, even though closeout correctly stayed blocked until the gate passed. Existing issue #3943 remains open and directly addresses merged-branch pre-merge gates.
Final recorded results were real:
- Contract: 245 passed, 10 skipped, 245.84 seconds.
- Full architecture: 2,125 passed, 2 skipped, 2 xfailed, 776.45 seconds.
- Canonical external E2E: five scenarios passed, 801.94 seconds.
- Lint, whole-repo format, and final required CI including Windows passed.
Those checks do not retroactively prove every original WP13 acceptance cell. The WP13 prompt required a larger matrix. The parent explicitly substituted focused source/wheel/architecture/corpus evidence and did not mark all T065-T071 individually complete. Log line 20630.
I justified that narrowing using the user's request for diminishing-return reviews. That was an incorrect inference: focus review scope is not authorization to reduce acceptance requirements. Recording a variance is necessary but does not by itself authorize it. The honest outcome is merged implementation with passing recorded gates and an original-matrix coverage gap, not exhaustive acceptance.
The generated retrospective also praises WP10 for having no rejection cycles. Its lane history is accurate but the performance inference is misleading: multiple upstream repair Ops carried its rework. Completion metrics must include blocking/supporting Ops and acceptance variances, not just WP lane rewinds.
The closeout PR's "docs(mission)" title understated scope: GitHub reports 34 changed files, 2,510 additions and 547 deletions, and it included substantive remediation. Future closeout fixes need an accurate title and fresh code-review expectations.
These were within my control:
- Scheduled the first real composed path too late and treated supplier approval as a stronger readiness signal than it was.
- Routed adjacent transition defects serially instead of addressing their common class.
- Overconstrained the command owner by demanding changed rendered bytes, although mission_type_activations was not a command-selection input. The owner correctly stopped and challenged that demand. F047 clarification.
- Allowed polling, verbose handoffs and repeated context recovery to dominate coordination.
- Missed full merged-branch architecture verification before implementation merge.
- Interpreted review-focus guidance as acceptance-scope permission.
- Reported a tool-accounted duration as total elapsed time.
- Used WP approval counts without enough emphasis on the remaining integrated path.
These findings do not require weakening stale-input guards, allowing data loss, removing independent review, or abandoning Spec Kitty. They require changing when integration is proved and how evidence is reused.
Independent reviewers caught actual preservation and partial-write risks. Real subprocess tests, cold-home snapshots, changed-input controls and repeat-apply checks exposed problems that component mocks would have concealed. Evidence was preserved through interrupted workers rather than discarded. Later WP09 review reused unchanged evidence instead of restarting a full audit. Closeout correctly remained blocked after the full architectural gate failed. Issue tracking retained concrete follow-ups instead of calling every failure environmental.
The improvement is to retain those protections with less repeated coordination.
Proposed policy, not a claimed implementation or guaranteed duration reduction.
| Priority / Owner | Change | Checkable success criterion |
|---|---|---|
| P0 / Mission orchestrator | Start a thin public preview -> apply -> repeat path immediately after minimal owner interfaces exist | First composed smoke executes before the second wave of supplier approvals |
| P0 / Integration owner + suppliers | Define expected cross-owner transitions together | One shared matrix covers config absent/present, parent absent/present, selected bundles, tampered input, and repeat-no-churn |
| P0 / Orchestrator | Treat a repeated cross-owner symptom as one bounded integration repair Op | One owner coordinates the defect class; source ownership remains explicit; consumer reproduction is required before completion |
| P0 / Release owner | Run all required gates on the exact consolidated candidate before merge | Recorded terminal green for exact SHA; relevant source changes invalidate affected evidence |
| P0 / Reviewer + operator | Separate review narrowing from acceptance changes | Every required acceptance row has evidence or an explicitly approved disposition |
| P1 / Review lead | Cycle 1 full bounded contract; cycle 2 findings + immediate regressions; cycle 3 correction-only or explicit design arbitration | No unchanged broad re-review without a stated invalidation reason |
| P1 / Implementer | After repeated rejection, model the defect class before another patch | Cases include lifecycle/state combinations, not only latest failing input |
| P1 / Orchestrator | Bound coordination and escalation latency | One concise blocker record; immediate critical-path notice; inline fallback when authorized and agent route fails |
| P1 / Test owner | Standardize isolation and automatic handoff checks | Unique HOME and SPEC_KITTY_HOME per worker; formatter/lint run before handoff; live process handles tracked |
| P1 / Runtime/metrics owner | Include supporting Ops, blocked age and coverage in progress | "11/13 approved" cannot conceal incomplete public integration or deferred matrix cells |
For the next comparable mission, use a same-day delivery target as a planning constraint, not an assurance. At four hours without an executable composed path, stop adding parallel owner work and revisit sequencing. At a second same-class integration failure, consolidate the fix instead of opening another serial island. These are proposed escalation thresholds to evaluate, not measured optimal limits.
Verified open at retrospective time:
- #3943: pre-merge consolidated fast/architecture gates.
- #3996: finalization overwrites review baseline.
- #3998: retrospective startup inventory race.
The original WP13 matrix should be reconciled against executed evidence and any actual scope authorization. This retrospective identifies that gap; it does not silently execute the missing tests or assert it is resolved.
No new issues were filed and no archived mission records rewritten during this retrospective. This follow-up audit intentionally distinguishes itself from the earlier generated retrospective and its optimistic lane-only summaries.