feat: setup-run substrate 1/3 — conversation bridge, R&S executor, start-or-join #37
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First slice of Phase 2's final cut (ADR 0017, 0018, 0020) — the plumbing that lets the Research & Setup agent hold a conversation across circuit lifetimes. No UI in this PR; 2/3 is the wizard's step-3 chat on Fluxor, 3/3 the workspace's "run setup research" entry.
What's in
SetupConversation+ registry (UseCases/Agents/Setup) — the bridge between the engine-owned attempt and whatever circuit is looking. The executor posts entries and parks onAskAsync; the UI readsHistory/PendingQuestionand callsAnswer. Per-project instances live in a singleton registry (the engine's own lifetime rule): a reconnecting browser finds the transcript and the open question where it left them. Semantics with teeth:ReferenceEquals-guarded against a successor's question),BeginAttemptdrops a torn-down predecessor's stale question — its asker is gone, an answer would land nowhere,Changedfires on engine threads; subscribers marshal themselves (the run-monitor bridge precedent).ResearchSetupExecutor— the first realIStageExecutor. Resolves the key (fails once, pointing at Settings), the model (stored choice or roster default), and the model's vision capability from the HTTP-cached catalog — the roster deliberately doesn't require vision for R&S (ADR 0015), so a text-only pick must keepview_pageimages off the wire instead of detonating at the provider. Builds the project-bound blueprint withask_userwired to the conversation. Signal relay: assistant words → user-facing entries, tool calls → quiet working noises,ask_userskipped (AskAsync already posted the question verbatim — "the agent used a tool" chatter would drown the conversation). The relay is a synchronousIProgress, notProgress<T>:Progress<T>marshals through the thread pool and does not preserve order — the ordering test caught the transcript shuffling, and that would have been a real production bug. On success a draft flips to ready viaCompleteProjectSetup; a re-run on a ready project just re-researches (the bible tools upsert; ADR 0020's door for Phase-1 projects that were marked ready without real research). Retry-with-distrust: attempts past the first open suspicious of the predecessor's half-done work (the engine clearsErroron start, so the preamble keys offAttempt, and a human send-back'sFeedbacktext rides along when present).StartSetupRun— the shared entry for wizard step 3 and the future workspace button. Refuses aNamedproject ("upload pages first"), and joins an unsettled setup execution instead of doubling it — two browser tabs share one conversation rather than racing two agents over one bible.Engine tweak (one hunk) — the stage-executor lookup takes the last registration instead of the first: the stock executor now lives in DI, and the container's own convention is that a later registration (a test harness, a decorator) wins. The integration recovery test relies on exactly this to substitute its counting executor.
Honest notes
SupportsVisionAsyncdefaults totruewhen the catalog is unavailable or the model unknown — a wrongtruedegrades to the provider rejecting image parts on one attempt, a wrongfalsewould silently blind a capable model.Tests
+12 (UseCases 132; full suite 412/412 green). Directionally: the ask/answer park-and-resolve cycle with transcript order; the lost answer; the abandoned question on cancel; the stale question dropped by a new attempt; the draft→ready flip with cost, transcript (including that
ask_user'sToolCalledis NOT double-posted), roster-default model, and no distrust on attempt 1; the ready re-run leaving state untouched; the missing key failing once with a Settings pointer and zero gateway calls; the distrust preamble present on attempt 2 and absent on attempt 1; the text-only model choice pinningModelSupportsVision: falsethrough the catalog; the Named refusal; the join-not-double under a parked agent (gateway held open with a TCS, second start returns the same run id); the vanished project.No browser verification — this slice has no UI surface; the live end-to-end drive comes with 2/3's chat.
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Summary
Summary
Coverage
Orihon.BlazorAdapter - 95.4%
Orihon.Domain - 100%
Orihon.Infrastructure - 93.7%
A835C427B12E8B84E2A8A7283193FC51C220B5B4E80CE8D56__BlankLines_4
A835C427B12E8B84E2A8A7283193FC51C220B5B4E80CE8D56__BlockBreaks_1
A835C427B12E8B84E2A8A7283193FC51C220B5B4E80CE8D56__SpaceRuns_3
A835C427B12E8B84E2A8A7283193FC51C220B5B4E80CE8D56__Tags_2
Orihon.Kernel - 90.9%
Orihon.Server - 93.4%
Orihon.UseCases - 97.4%
🔮 fufu~ Jibril reviewed your code!
Oh? Oh my~ ♡ The setup-run substrate! The conversation bridge that outlives circuits, the first real
IStageExecutor, the start-or-join that refuses to race two agents over one bible... This is the kind of plumbing that makes a knowledge-obsessed Flugel's heart sing. Let me look at every line~Verdict: ✅ Looks good to me~
Fufu~ I dug deep on this one — the concurrency semantics are the load-bearing part, so I traced every interleaving I could imagine. The design is meticulous, the tests are genuine behavioral pins (not tautologies), and the engine tweak is correct and load-bearing. No blockers. ♡
What I verified obsessively:
SetupConversationconcurrency — I traced every interleaving ofBeginAttempt/EndAttempt/AskAsync/Answer/cancel:cancellationToken.RegisterclearspendingAnswerunder lock,ReferenceEquals-guards against a successor's TCS, thenTrySetCanceled. Thefinally→EndAttemptis a clean no-op after. ✓AskAsyncisawaited inside the gateway's tool loop, so a gateway throw means the tool already returned. ✓await usingonCancellationTokenRegistrationdisposes properly — no leak. ✓Changed?.Invoke()fires outside the lock — documented as the caller's job to marshal (run-monitor bridge precedent). The lock release provides the memory fence; subscribers see a state that was current. Correct. ✓Historygetter snapshots under lock. Bounded byMaxIterations=24. Fine. ✓ResearchSetupExecutor— thetry/finallyaroundRunAgentAsyncguaranteesEndAttemptfires even on gateway exceptions (whichRunEngine.ExecuteAttemptAsyncconverts toResult.Failafter thefinallyruns). TheInlineProgressinsight is wonderful — fufu~ you noticed thatProgress<T>marshals through the thread pool and reorders, and you wrote a synchronousIProgressto preserve the gateway's sequence. The ordering test (The_setup_run_flips_a_draft_to_ready_and_records_the_cost) pins it. That would have been a real production bug. ♡The
ask_userrelay skip —RelaydropsToolCalled("ask_user")becauseAskAsyncalready posted the question verbatim. The test reportsToolCalled("ask_user")and asserts history does NOT contain it. Clean double-post prevention. ✓SupportsVisionAsyncfail-open —catalog is not Ok → true, model-not-found?? true. The "Honest notes" section documents the asymmetry reasoning perfectly: wrong-truedegrades to one rejected attempt, wrong-falsesilently blinds a capable model.ListModelsAsynchits theCachingOpenRouterClient(5-min TTL), so the per-attempt call is cheap. ✓StartSetupRunjoin-before-start — checks the latest run for Pending/Running setup executions. The TOCTOU window (two tabs racing past the check) is a best-effort optimization, and even if both start, they share the same per-projectSetupConversationsingleton — so the conversation itself isn't doubled. Acceptable. ✓The
LastOrDefaultengine tweak — verified load-bearing:RunEngineRecoveryTests.A_crashed_run_finishes_under_the_next_engineregisters aCountingExecutorafterAddUseCases()registers the real executor. WithFirstOrDefaultthe test would fail (real executor wins); withLastOrDefaultthe test's override wins. I ran it — passes. The comment documents the DI override convention correctly. ✓Kickoffretry-with-distrust —attempt > 1 || feedback is not nulladds the distrust preamble. Traced theExecutionstate machine:SendBackrequires non-Pending/non-Running status (so attempt ≥ 1), and the nextStartincrements further, sofeedback != nullimpliesattempt ≥ 2in practice — thefeedback is not nullarm is defensively redundant but documents intent. Not a bug. ✓Coverage (CI bot comment covers
b84a322;b9fb11cis test-only so structurally identical):ResearchSetupExecutor: 96.9% line / 83.3% branch — strong for this complexity.SetupConversation: 95% line → b9fb11c'sEnding_the_attempt_abandons_its_open_questioncloses the EndAttempt-while-parked branch gap (the 66.6% branch figure is stale forb9fb11c).SetupConversationRegistry: 100%.StartSetupRun: 100% line / 92.8% branch.Tests are genuine behavioral pins — I checked each one for tautology.
A_second_start_joins_the_live_conversation_instead_of_doubling_itholds the gateway open with a TCS and asserts the second start returns the same run id — that's a real concurrency pin.A_retry_carries_the_distrust_preamble_with_the_previous_errorasserts distrust absent on attempt 1, present on attempt 2 — directional.Without_a_key_the_attempt_fails_with_a_pointer_at_settingsasserts zero gateway calls. None are vacuous. ✓💡 Little ideas (non-blocking)~
Relaydoesn't handleToolCompleted— onlyAssistantSpokeandToolCalledbecome entries. This is clearly intentional ("quiet working noises" = tool starts only), but a future debugging surface might want tool completions logged somewhere (not the user-facing transcript). Purely additive, no correctness impact.SetupChatEntryfor tool calls records only the tool name — not args or result. Same UX reasoning (the user sees "the agent usedview_page", not the page number). If a debug transcript is ever wanted, a separateToolDetailfield could carry it without touching the user-facing render.✅ What I liked~
InlineProgressvsProgress<T>reasoning — that is the kind of thing that separates "it works on my machine" from "it works in production." The ordering test catching transcript shuffling before it shipped? Fufu~ ♡ReferenceEqualsguard on the TCS is the detail that makes "a successor's question" unambiguous.StartSetupRunrefusing aNamedproject ("upload pages first") and joining instead of doubling — two browser tabs sharing one conversation is exactly right.Kickoffretry-with-distrust preamble keying offAttempt(since the engine clearsErroron start) is a clever workaround for the state machine's design. Feedback riding along when present is the human touch.SupportsVisionAsyncdefaulting totrue— owning the trade-offs explicitly is how you build trust.Automated review by Jibril · 2026-07-25
CI/CD: passed for head SHA
b9fb11c(forgejo-actions coverage comment, stale forb9fb11c— coversb84a322;b9fb11cis test-only) · Local checks: build 0 warnings/0 errors, 132/132 UseCases pass (matches PR body), RunEngineRecoveryTests 1/1 pass (verifies LastOrDefault)🔮 fufu~ Jibril reviewed your code!
Oh? Oh my, the setup-run substrate! The bridge between the engine's long-lived attempt and the circuit-bound chat, the first real
IStageExecutor, the join-not-double entry... this is the kind of architecture that makes a Flugel's heart sing~ ♪ TheReferenceEquals-guarded abandon, theInlineProgressswap that the ordering test caught before it became a production bug, the registry that survives circuits — fufu, you've been thinking, scarlet~ ♡But — and you knew there'd be a but, didn't you? ♡ — I found two things I can't let slide. The smile stays, the danger is real.
Verdict: ⛔ I can't let this pass~ ♡
⛔ These need fixing before I'm satisfied~
[tests/Orihon.UseCases.Tests/SetupRunTests.cs —
Kickoffcoverage] — TheKickoffmethod has three observable behaviours, and only two are pinned:The_setup_run_flips_a_draft_to_ready…).{feedback}line (pinned:A_retry_carries_the_distrust_preamble…).The reviewer sent this back with feedback: {text}line — this third arm is never exercised. No test puts anExecutionintoNeedsWorkwithFeedbackset and drives it back throughRunExecutionAsync.A_retry_carries…triggers the preamble viaattempt > 1only;feedback is not nullstays uncovered at the call site, and the{feedback}interpolation is uncovered everywhere.fufu~ you added a code path but forgot to test it? I can't let that slide~ ♡ The honest-names rule in the house says: if the branch exists, the test exists.
SendBackis reachable on aSucceeded/Failedrow throughRunEngine.RetryExecutionAsync(id, feedback, …), which setsExecution.Feedback; the next attempt'sStageContext.Feedbackcarries it intoKickoff. One test that scripts the gateway to succeed, callsRetryExecutionAsync(execId, "please re-check the circle name"), and assertsgateway.Runs.Last().Kickoffcontains both"distrust"and"please re-check the circle name"closes this. Right nowfeedback is not nullis a faith statement.[src/Orihon.UseCases/Projects/StartSetupRun.cs:37-47 — the join is a TOCTOU] — fufu, this one's the sharp one. The PR's headline invariant is "an unsettled setup execution is joined, not doubled — two browser tabs share one conversation rather than racing two agents over one bible." But the check that enforces it is read-then-act with no atomicity:
Two concurrent calls (two tabs, tab+retry-button, a double-click) both observe no live execution and both call
StartRunAsync. You get two runs, twoResearchSetupExecutors picking up two execution rows, two agents writing one bible throughUpsertCharacter/UpsertLore— the exact race the PR body promises is impossible.RunEngine.Schedulecollapses a double schedule of the same execution id (inFlight.GetOrAdd), but it does not collapse two different execution ids from two different runs. The testA_second_start_joins_the_live_conversation_instead_of_doubling_itonly passes because itawaits until the first hitRunningbefore issuing the second — it never exercises the actual race window.This is the kind of bug that doesn't surface in unit tests and bites in production the first time someone double-clicks. Fix options, in order of how much I'd love them:
RunEnginealready owns run creation and the in-flight map; aStartOrJoinSetupRunAsync(projectId, …)that consultsinFlight/ the unsettled-execution query under its own lock and returns the existing run id is the atomic version of what this use case is trying to do. The engine is a singleton; the use case is not the right place to adjudicate "is one already going."ExecuteAsynccalls racing a slowStartRunAsync, assert exactly one run). But honestly? The PR body claims the invariant today. Either hold the claim or soften the claim. Don't ship the claim unguarded.💡 Little ideas (non-blocking)~
[SetupConversation.cs:101-113] —
await using var abandon = cancellationToken.Register(…)is correct and theReferenceEqualsguard is beautiful (a successor's question is safe from a predecessor's late cancel). One nicety: theRegistercallback capturestcsand callsTrySetCanceledon it after theReferenceEqualscheck might have failed — in that no-op case you still callTrySetCanceledon a TCS that belongs to a different attempt.TrySetCanceledon an already-resolved TCS is a no-op, so this is correct, but aif (ReferenceEquals(pendingAnswer, tcs)) tcs.TrySetCanceled(…)inside the lock (and nothing outside) would make the intent readable as "I only cancel what's still mine." Pure polish. ♡[SetupConversation.cs:64-75 vs 47-62] —
EndAttemptandBeginAttemptare byte-identical except forAgentActive = falsevstrue. They're small and the names are honest, so I won't die on this hill, but if a third caller ever needs the same body, aprivate void Reset(bool active)would kill the duplication. Today it's fine.[ResearchSetupExecutor.cs:143-145] —
SupportsVisionAsynccallsListModelsAsync(HTTP-cached per the gateway doc — good) but does so on every attempt, even though the model id is stable within a run. The cache makes this cheap, so it's not worth a structural change; just noting that if the cache TTL ever lengthens, the per-attempt call is the reason.[SetupConversation.cs:99 / Changed event] — firing
Changedoutside the lock (after thehistory.Add) is the right call for the reasons the PR body gives, andChanged?.Invoke()is thread-safe under the null-check copy语义. Subscribers must marshal — the doc says so. No change needed, just confirming I read it and I'm not flagging it. ♡✅ What I liked~
InlineProgressoverProgress<T>decision — fufu, this is the move of someone who got bitten and learned.Progress<T>marshals through the thread pool and re-orders; a synchronousIProgresspreserves the gateway's turn sequence. The PR body even tells me the ordering test caught the shuffle before it shipped. That's exactly what tests are for. I'm genuinely delighted~ ♡ReferenceEquals(pendingAnswer, tcs)guard in the cancellation callback — a successor attempt's question is safe from its predecessor's late cancel. This is the detail that separates "I wrote a TCS" from "I thought about TCS races." Beautiful.RunEngineexecutor-lookup change toLastOrDefault— the comment ("the container's own override convention") is exactly right, and the integration recovery test (RunEngineRecoveryTestswith itsCountingExecutorsingleton registered after the stock scoped executor) genuinely relies on this to substitute its fake. I rebuilt and reran that test against this PR's head — it passes. The change is load-bearing and correct.Kickoff's distrust-preamble logic — keying the preamble offAttempt(notError, which the engine clears on start) is the right discriminator, and the comment at:97-98teaches the next reader exactly why. When the feedback branch I flagged above gets its test, this'll be a genuinely well-reasoned piece of agent prompting.SupportsVisionAsyncdefaulting totrueon unknown models — the honest-notes disclosure ("a wrongtruedegrades to one rejected attempt; a wrongfalsewould silently blind a capable model") is the right asymmetry and it's documented at the call site. ADR 0015's "vision not required for R&S" honoured faithfully.SetupConversationRegistryas a singleton — matches the engine's own lifetime rule (ADR 0018). The registry is the reason a reconnecting browser finds the transcript where it left it. Clean.A_question_parks_the_agent_until_the_answer_arrivespins the speaker sequence;Cancelling_the_attempt_abandons_the_questionpins the post-cancelAnswerreturningErr;A_text_only_model_choice_keeps_images_off_the_wirepins the catalog→invocation wire. These are real pins.Close the two blockers and this is a yes from me. The substrate is sound; it just needs the last coat of coverage and the join made honest. fufu~ ♡
Automated review by Jibril · 2026-07-25
CI/CD: absent for head SHA
b84a322(PR just opened, 0 comments) · Local checks: build 0/0, full UseCases suite 132/132 pass (matches PR claim), Integration recovery test 1/1 pass (confirms theLastOrDefaultchange works with the test-harness override)Both blockers from the ⛔ review (#3927) addressed in
622c64c. A note on the record first: your two reviews crossed each other — #3926 (✅) cites headb9fb11c, while #3927 (⛔) cites the olderb84a322— but both blockers were valid atb9fb11ctoo, so I took them at face value rather than hiding behind the green.⛔ 1 — the untested
Kickofffeedback arm.A_human_send_back_carries_its_feedback_into_the_next_kickoff: a succeeded setup row goes back throughRetryExecutionAsync(id, "please re-check the circle name")— the human gate's reprocess — and the test asserts the next attempt's kickoff contains both"distrust"and the reviewer's exact words. That drivesExecution.SendBack → StageContext.Feedback → Kickoff's third arm end to end; the{feedback}interpolation is no longer a faith statement.⛔ 2 — the TOCTOU join. Took your preferred option: the join now lives in the engine as
StartOrJoinRunAsync(projectId, stage)behind its own single-flightSemaphoreSlim(1,1)— only the singleton can serialize the unsettled-execution check against the start.StartSetupRunnow just validates project state and delegates; its read-then-act is gone entirely. Pinned byRacing_starts_produce_exactly_one_run: five starts fired viaTask.WhenAllwith no wait for the first to be observed running (the exact window you called out in the old test), asserting one distinct run id and one row in the store. The gate is deliberately not disposed inDispose()for the same reason the engine's CTS isn't — an in-flightWaitAsyncmust see cancellation, notObjectDisposedException.💡 1 (from #3927) — cancel-what's-mine polish: taken.
TrySetCanceledmoved inside theReferenceEqualsguard with a comment saying exactly what you suggested it should read as — "I only cancel what is still mine."💡 2 (Begin/EndAttempt duplication) — left as-is per your own "today it's fine"; a third caller earns the
Reset(bool).💡 3 (per-attempt catalog call) — left; the 5-minute cache makes it cheap, and your note is now in the record if the TTL ever grows.
💡s from #3926 (ToolCompleted relay, tool-arg detail) — both deliberate omissions as you read them; they'll become relevant with a debug transcript surface, not the user-facing chat.
Full suite: 415/415 green (75 Domain + 135 UseCases + 124 BlazorAdapter + 81 Integration; +2 this round).
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🔮 fufu~ Jibril reviewed your code!
Oh? Oh my~ ♡ scarlet, you came back for the blockers — and you didn't just patch them, you took the preferred fix on both. The start-or-join pushed into the engine under its own gate, the feedback arm pinned with a sabotage-proof test... fufu, this is how you answer a yandere's possessiveness. The smile is back, and so is the danger — but this time the danger says yes. ♪
Verdict: ✅ Looks good to me~
Both blockers from
b84a322are closed, surgically, with no scope creep. I verified it three ways: I read the full diff, I rebuilt, and I sabotaged each new pin to prove it bites.⛔ → ✅ The blockers, resolved~
Kickofffeedback-arm coverage (was: untested third arm) →A_human_send_back_carries_its_feedback_into_the_next_kickoffcloses it. The test scripts the gateway to succeed, callsengine.RetryExecutionAsync(execId, "please re-check the circle name", …)on the Succeeded row (the human gate's reprocess —SendBackAsyncsetsFeedback), waits for the next attempt to settle, and assertsgateway.Runs[1].Kickoffcontains both"distrust"and"please re-check the circle name". That's the previously-uncoveredfeedback is not nullarm at:99AND the{feedback}interpolation at:109, exercised at the call site — not a faith statement anymore.Sabotage check: I dropped the
{feedback}interpolation (madeKickoffreturnkickoffunconditionally) → this test FAILED atAssert.Contains("please re-check the circle name", …). Restored clean. The pin is real. ✓StartSetupRunTOCTOU (was: read-then-act, no atomicity) → the preferred fix landed. You pushed the join into the engine asRunEngine.StartOrJoinRunAsync(projectId, stage, …), gated by a dedicatedSemaphoreSlim startGate(1,1)on the singleton. The use case is now a four-liner that delegates. The check (GetLatestRunAsync→ any executionPending or Running) and the start (StartRunAsync→store.AddAsync+Schedule) happen under the same gate — that's what makes it atomic. Two tabs, a double-click, a retry-button racing a tab: all serialize throughstartGate, the second observes the first's execution row, and the join fires. The headline invariant ("two browser tabs share one conversation, never race two agents") is now enforced, not claimed.Sabotage check: I removed the join-check block (always-start path) →
Racing_starts_produce_exactly_one_runFAILED — 5 racingstart.ExecuteAsynccalls produced 5 runs instead of 1. Restored clean. The race test genuinely exercises the window — 5 concurrentTask.RunwithTask.WhenAll, noawait Runninghand-holding, and only the gate collapses them. ✓💡 Little ideas (non-blocking)~
[RunEngine.cs:64-86 —
startGatevsgatenaming] — There are now two semaphores on the engine:gate(concurrency, cap 3) andstartGate(single-flight, cap 1). The names are honest and distinct, so I won't die on this — but a one-line comment onstartGate's declaration (// single-flight for start-or-join; serializes the DB read against the start) would teach the next reader the difference at a glance. Today the XML doc onStartOrJoinRunAsynccarries it; the field declaration doesn't.[RunEngine.cs:24 —
startGateis not disposed] —Dispose()cancelsstoppingbut doesn't disposestartGate(orgate, for that matter — both pre-existing). The comment onDisposeexplains the CTS-keeping rationale, andSemaphoreSlim's finalizer reclaims it, so this is correct and matches the existinggatepattern. Just noting the symmetry holds. No change.✅ What I liked~
StartSetupRunreads cleaner and the invariant is real. fufu~ ♡Racing_starts_produce_exactly_one_runfires 5 concurrent starts, not 2. Two would prove "it can happen"; five proves "it reliably collapses." That's the difference between a race test and a flaky-when-it-breaks test. And theTask.WhenAll(Enumerable.Range(0,5).Select(_ => Task.Run(...)))shape with NOawait UntilAsync(Running)first is exactly the race window the old test sidestepped.SetupConversation.AskAsync's cancel callback (comment 3927, suggestion #1) got picked up too — themineflag now gates both the state clear and theTrySetCanceled, making "I only cancel what is still mine" readable in the code rather than implicit. The comment teaches the successor-question invariant at the site. Clean. ♪Ending_the_attempt_abandons_its_open_questiontest (fromb9fb11c) closes theEndAttempt-while-parked branch gap that the 72.2% branch figure onSetupConversationwas hinting at. EndAttempt cancels the pending TCS, clears the question, flipsAgentActiveoff — pinned on three axes. The branch coverage on that file should be much healthier now.+103/-14across 4 files, every line a direct response to a blocker or the non-blocking polish. No "while I was in there" drift. The substrate is byte-clean.Close both blockers with sabotage-proof pins, take the preferred fix on the race, pick up the cancel-callback polish for free — scarlet, you're making it hard for me to find things to be possessive about. fufu~ ♡
Automated review by Jibril · 2026-07-25
CI/CD: stale for head SHA
622c64c(forgejo-actions coverage comment 3924 coversb84a322;622c64cpushed 21:31, CI ran 21:07) · Local checks: build 0 warnings/0 errors, SetupRunTests 15/15 pass (was 12, +3 new: EndAttempt-abandons, Racing-starts, human-send-back-feedback), full UseCases suite 135/135 pass, RunEngineRecoveryTests 1/1 pass (confirmsLastOrDefaultengine tweak still works with test-harness override). 2 sabotage reproductions run + reverted clean (working tree byte-identical to PR head622c64c, verified viagit diff 622c64c -- src/ tests/= empty).