Conversation
A turn whose agent is bound to a harness this host cannot run fails in HarnessRouter::engine_for with a sentence naming the agent, the harness and the reason. classify() recognised none of it, so the chat path fell through to the generic notice, whose "Send the message again to retry" closing is wrong advice for a turn that never reached a model. The arm cuts the sentence free of the error type's Display prefix, so no `configuration error:` reaches a reader, and recovers the agent id the sentence already names so the console can link its action button. It is idempotent: the stored text is re-classified on every read.
…tinyhumansai#2394) Keying a classifier on another module's prose goes quiet when the prose drifts. These drive the real HarnessRouter — both the no-engine and the failed-warm-up spellings — and assert the real error still classifies, so a reword fails CI instead of dropping the class back into the generic notice.
…yhumansai#2394) Proves the end of the chain the classifier lights up: the harness name reaches the wire, and the retry advice does not survive.
…inyhumansai#2394) The LLM page has no control that fixes a harness binding — the Model tab owns both the harness and the model — so harness_unavailable shares the pair bucket despite not being a `pair_` code. The suite's own coverage ratchet is what caught the new code, and is extended in place rather than answered with a second test file.
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 2 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughAdds ChangesHarness unavailable handling
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant HarnessRouter
participant FailureClassifier
participant WireDTO
participant Frontend
HarnessRouter->>FailureClassifier: provide unavailable harness sentence
FailureClassifier-->>HarnessRouter: return harness_unavailable and agent id
FailureClassifier->>WireDTO: serialize failure details
WireDTO->>Frontend: provide code and pairAgentId
Frontend-->>Frontend: open agent Model settings or return null
Suggested reviewers: Merge Risk: 🟡 Moderate · up to Chat output is sanitized, but enabling debug logging can persist adapter diagnostics that may contain secrets. The raw diagnostic should be removed or redacted before merge. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
A rabbit reads each line, Comment |
Tiny Sweeper review
Last completed reportTiny Sweeper reviewTiny Sweeper completed its review; deterministic results follow. State: Reviewing pending checks Review snapshot
Completeness: Complete What changedThe change adds a `harness_unavailable` wire code to classify bound-harness turn failures that never reach a model. The classifier in `copy.rs` introduces a `harness_binding` parser that requires a tight connective (e.g., `, but ` or `, whose last warm-up failed: `) before the backtick closing the harness name, rejecting lookalike sentences. Warm-up error diagnostic text is cut before the free-form reason. The frontend routes the new code to the agent's Model tab instead of the company-wide LLM settings. The doc table and the frontend constant list are updated to include the new code. Features
TestsNo supported feature-to-test mapping was produced. Test execution is not inferred. FindingsPreviously reported and still active
Resolved this pass
Pending checks: Console E2E, Console E2E (live brain), Console E2E (first run) Before merge
How this fits togetherflowchart LR
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n5["...fault_coding_cli_is_not_synthesized_twice<br/>changed"]:::changed
n6["...oducible_code_reaches_the_wire_unmodified<br/>changed"]:::changed
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classDef changed fill:#0d4429,stroke:#238636,color:#e6edf3
classDef impacted fill:#161b22,stroke:#6e7681,color:#c9d1d9
classDef flagged fill:#5a1e02,stroke:#d93f0b,color:#ffffff
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Agent review detailscritique
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Requesting changes: 2 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
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critique: $0.0174 · 318,175 in / 11,643 out · 23,398 cached (7%) · gpt-5.6-luna, deepseek/deepseek-v4-flash
security: $0.0103 · 202,306 in / 4,210 out · 11,129 cached (6%) · gpt-5.6-luna
description: $0.0008 · 15,795 in / 107 out · 0 cached (0%) · deepseek/deepseek-v4-flash
e2e: $0.0014 · 25,581 in / 903 out · 0 cached (0%) · deepseek/deepseek-v4-flash
| /// is a sentence of exactly this shape, and both `MessageView::project` and | ||
| /// `chat_history` re-classify the stored text on every read. | ||
| fn harness_binding(detail: &str) -> Option<(String, String)> { | ||
| let bound = detail.find(HARNESS_BOUND_MARKER)?; |
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Require the complete router sentence before classifying
This accepts any error containing ` is bound to harness ` after an agent substring, without verifying that the prefix is the router's sentence shape or that the extracted agent/harness portions are valid identifiers. A provider error or other diagnostic containing text such as ... agent researcheris bound to harnessrunner ... will therefore be converted into harness_unavailable, exposed as a user-facing failure, and given a pairAgentId, even though the turn may have reached a model and the error is unrelated to harness availability. Match the complete HarnessRouter::engine_for formats (or use structured error data) rather than classifying on these two substrings alone.
[RULE] overbroad-error-classification ·
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Confirmed and fixed in 49d3e31. harness_binding() only checked that agent \`` and `` \ is bound to harness ` `` both appeared, with nothing anchoring what follows the harness name. A lookalike (e.g. echoed tool output quoting that shape) would misclassify. Now it also requires the harness name's closing backtick to be immediately followed by one of the router's two real continuations (, but / `, whose last warm-up failed: `) — the only two ways `HarnessRouter::engine_for` actually writes it. Added `a_lookalike_with_no_connective_is_not_classified` and `a_lookalike_with_the_wrong_connective_is_not_classified` (negative) plus `a_warm_up_failure_sentence_classifies_too` (positive, the other real shape) to `copy_tests.rs`; existing coupling tests in the gated `harness::router::tests` lane still pass unchanged since real router sentences already had this shape.
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Resolved — the reply explains why it is not a problem (advisory), as of 1be7634.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
| } | ||
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| if let Some((agent_id, sentence)) = harness_binding(detail) { | ||
| let message = if sentence.contains(HARNESS_RETRY_NOTE) { |
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Do not expose raw harness diagnostics in chat
sentence is copied from the entire router error after the agent ... is bound to harness ... marker, including the unavailable reason. Unlike the fixed messages produced by copy.rs, that reason is diagnostic text and can contain subprocess/provider output, paths, credentials, or other sensitive details. This value is then used as the operator-facing message and persisted/written to the wire. Classify the harness failure using a fixed, sanitized message (and obtain the agent identity through structured data rather than parsing the diagnostic string) instead of forwarding the raw router detail.
[RULE] diagnostic-information-disclosure ·
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Investigated rather than reasserting the PR body's claim. The audience question settles this: chat is not a wider or more-privileged audience than the surfaces already showing this same raw text.
RunSummary/AgentRunGql.error(task board attempts, run observatory list+detail, and the per-agent run list inAgentRuns.tsx:683,834) all projectrun.errorverbatim, with no admin/role gate —crates/opencompany-core/src/server/graphql/observability.rs:181(async fn error(&self) { self.record.error.clone() }) and the REST family inserver/ops/runs.rs(list_runs/run_detail/runs_for_task) all sit behind plainScopedCompany, notAdminScopedCompany. The only gate in this whole area,approval_visibility::may_read_deep_trace(admin-only), covers a different field —steps[].deep(reasoning/tool arguments/raw output) — nevererror.run.erroris populated fromerr.0.to_string()at the settle site (server/operator.rs:3452, viaspawn_chat_turn) — the fully raw, pre-classification diagnostic (the same oneturn_failure_notice's own doc comment calls "a diagnostic [that] never belongs in company chat," citing issue A turn that ends in an empty inference gives no way to tell why (F10) #2016). That's strictly more raw than whatharness_binding()forwards to chat, which is already cut to start atagent \`` (stripping anyDisplay` prefix) and only reachable at all for the two router-authored continuations after the fix above.- Any company Member — the same population that can read chat — can already read
run.errorunredacted via the run list/observatory/task-attempts routes today. So this PR doesn't create new exposure; it exposes a narrower slice of the same class of text, to the same audience, on a surface (chat) that already had a documented "never forward raw diagnostics" doctrine it's arguably closer to than the runs endpoints are.
Concrete worst case per harness kind (so this isn't reasoning from the common case): kind="acp", transport≠"local" → static string, no host detail. No acp_agents factory (server build) → static unavailable_reason("acp"). local transport with a factory → resolve_acp_engine's only failure mode is LocalAcpAgent::new's harness-definition lookup ("no local ACP harness definition for {agent}") — the real subprocess spawn (which can carry resolve_adapter's resolved path) happens lazily in .client(), and AcpRunTurn does not override ensure(), so that spawn is never reached via the warm-up path today — the "whose last warm-up failed" branch is currently only reachable through built_in's ensure_impl, which does not shell out or touch the filesystem.
Conclusion: acceptable as-is, no design change. If the product later wants the error field itself locked down (e.g. gated the same way deep is), that's a change to the runs/observatory read path, not something specific to this PR's classifier arm — happy to file that as a separate issue if wanted.
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Resolved — the reply explains why it is not a problem (advisory), as of 867d5a6.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
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Resolved — the reply explains why it is not a problem (advisory), as of 1be7634.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
| /// resolution failure in the provider/model sense, but the same class of | ||
| /// thing to the person reading the thread — a named setting is wrong, and no | ||
| /// amount of resending clears it — so it travels the same wire fields. | ||
| pub const HARNESS_UNAVAILABLE_CODE: &str = "harness_unavailable"; |
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Drive the new harness_unavailable code path end to end
harness_unavailable is a new wire code that the frontend renders as a fail-closed notice with an action button. No existing e2e test sets up a company with a harness the host cannot run and asserts that: (a) the operator sees the classified notice instead of the generic retry advice, (b) the harness_unavailable code and pairAgentId reach the frontend, and (c) the action button navigates to the agent's Model tab. A test such as frontend/test/e2e/agent-detail.spec.ts or a new harness-level e2e could configure a claude-code harness with no transport and verify the turn failure wire shape.
[RULE] missing-end-to-end-coverage ·
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Legitimate gap, agreed — no e2e drives harness_unavailable through a booted app today. Judged cost: this needs a fixture company with a harness the host genuinely cannot run (or a warm-up that genuinely fails) plus a real turn dispatch and SSE/history read, which is materially more setup than the existing coupling tests (harness::router::tests drives the real router directly; copy_tests.rs/resolution_failure_wire_tests drive the classifier and wire shape directly — both already prove the mechanism end to end from the router's error text to the wire fields). A true e2e on top of that proves wiring, not logic, and building a harness-unavailable fixture safely (without flaking on host/CI差异, e.g. desktop-only ACP paths) is its own piece of work. Proposing this — together with #3 (this) and #5 (router_tests.rs:543) — as one follow-up e2e-coverage issue rather than bolting a fixture-heavy test onto this PR. Will file it if that's agreeable.
| * chosen" at all, a keyless provider, or a model the catalogue no longer | ||
| * lists — is a fix on the company-wide LLM page. | ||
| */ | ||
| export function turnFailureAction( |
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Verify the harness_unavailable action button renders and navigates in an e2e te…
turnFailureAction now returns the per-agent Model tab for harness_unavailable, but no e2e test injects a classified turn with that code and asserts that the button appears, has the correct label, and navigates to #/company/agent/<id>?tab=model. A test in frontend/test/e2e/agent-detail.spec.ts or a new file could mock the SSE or history payload and verify the rendered link.
[RULE] missing-end-to-end-coverage ·
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The pure-logic half of this is already covered: turn-failure.test.ts:114 (harness_unavailable opens that agent's Model tab, not LLM settings) asserts the exact { label: "Open Model settings", href: "#/company/agent/researcher?tab=model" } from turnFailureAction. What's genuinely missing is the rendered half you're pointing at — a real chat bubble mounting TurnFailureNotice/MessageRow and a click actually navigating — there's no component or e2e test doing that for any turn-failure code today, not just this one, so it isn't a gap this PR introduced in isolation. Rolling this into the same follow-up issue as #3/#5 rather than adding a one-off DOM test just for this code while every sibling code stays uncovered the same way.
| /// operator is most likely to meet. | ||
| #[tokio::test] | ||
| async fn a_failed_warm_up_classifies_for_the_operator() { | ||
| let flaky = FlakyEngine::new("deep"); |
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Exercise the warm-up-failure path through a real e2e scenario
The warm-up-failure path is tested in isolation at router_tests.rs but never exercised by an end-to-end test that boots the full app. An e2e test could configure a harness whose engine is missing or fails to warm up (e.g. a provider credential that is missing or revoked), send a turn, and verify the classified notice reaches the UI. Without it, a regression in the end-to-end wiring between harness warm-up, engine_for, and the operator message can slip through unnoticed.
[RULE] missing-end-to-end-coverage ·
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Agreed, real gap. Same judgement as #3: an e2e that forces a genuine warm-up failure (a harness whose engine never comes up) and watches it reach the UI is meaningfully more expensive than the existing isolated coupling test, which already proves the router's real error text classifies correctly (a_failed_warm_up_classifies_for_the_operator in the gated harness::router::tests lane, driving the actual HarnessRouter, not a hand-written string). Filing this together with #3/#4 as one follow-up e2e-coverage issue rather than adding a fragile one-off here.
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…fying (tinyhumansai#2394) harness_binding() matched on two substrings (agent ` and ` is bound to harness `) with nothing checked between the harness name and the rest of the text. An unrelated diagnostic that happened to quote that shape — echoed tool output, a provider error, adversarial message content — would misclassify as harness_unavailable even though the turn may have reached a model. Anchor on the router's two actual continuations (`, but ` / `, whose last warm-up failed: `) right after the harness name's closing backtick, so only HarnessRouter::engine_for's real sentences match. tinysweeper finding on PR tinyhumansai#2401.
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Requesting changes: 2 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
$0.0153 · 256,157 in / 16,416 out · 15,612 cached (6%) · ladder/vectors, gpt-5.6-luna, deepseek/deepseek-v4-flash · 1,157 embedded
critique: $0.0093 · 165,445 in / 7,249 out · 12,319 cached (7%) · gpt-5.6-luna, deepseek/deepseek-v4-flash
security: $0.0039 · 55,673 in / 5,144 out · 3,293 cached (6%) · gpt-5.6-luna
e2e: $0.0013 · 24,306 in / 892 out · 0 cached (0%) · deepseek/deepseek-v4-flash
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| if let Some((agent_id, sentence)) = harness_binding(detail) { | ||
| let message = if sentence.contains(HARNESS_RETRY_NOTE) { |
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Do not expose raw harness diagnostics in chat
sentence includes the router's raw warm-up reason after whose last warm-up failed:. This value is returned as ResolutionFailure.message and is serialized to the operator-facing reply, so a warm-up error containing filesystem paths, command arguments, environment details, or other sensitive diagnostics will be shown in chat. Preserve only a bounded, user-safe explanation in message; keep the raw reason for server logs instead.
[RULE] diagnostic-disclosure ·
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Agreed on re-reading, and fixed in e138108 — reversing my earlier reply on the round-1 thread, which argued this was acceptable because run.error already exposes the same class of text to the same audience. That argument is true but it is a reason not to make it worse, not a licence to forward it.
harness_binding() now cuts the warm-up sentence at whose last warm-up failed, so the lane's {err} never reaches ResolutionFailure.message. The operator still learns which agent, which harness, and that warm-up is what failed — enough to act on, since the recovery action is the same either way. The reason stays on the run record and in the logs.
The no-engine tail (, but …) is kept: that text is the fixed unavailable string the host wired for the lane, not a captured error.
Idempotency needed care, since classify re-runs on its own stored output on every read. HARNESS_WARMUP_TAIL now stops before its : , so it matches both the router's raw sentence and the cut one this emits. Covered by the_warm_up_reason_never_reaches_the_message and reclassifying_a_cut_warm_up_sentence_is_a_no_op in copy_tests.rs, and the gated coupling test a_failed_warm_up_classifies_for_the_operator now asserts the lane's reason is absent rather than present.
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Correct, and this one found a real leak that my previous reply on the sibling thread got wrong. Fixed at the source in 867d5a6.
I had claimed the no-engine tail was safe because , but {detail} is always an authored unavailable string the host wired for the lane. That was true of every path but one: harness/lanes.rs's resolve_acp_engine ended with
.map_err(|error| format!("`{agent_id}` could not be started: {error}"))so the ACP factory's own construction error — which can name a resolved adapter binary path or its argv — went into unavailable, into HarnessRouter::engine_for's sentence, and out to chat. On a desktop build, where the factory is actually present, that path is live.
Fixed where the text is minted rather than where it is displayed: the reason is now the fixed line its \` adapter could not be started on this host, and the adapter's error goes to tracing::warn!. isacp.agent` from the company manifest — operator-authored config, not captured output.
That makes the invariant copy.rs leans on actually true for every lane, and its doc now states it and names lanes.rs as what holds it. lanes.rs:119 was the only place an unavailable reason interpolated a caught error; the other four push sites carry either unavailable_reason(kind) or this function's own fixed strings.
Not adding a test for this one, deliberately: reaching it needs an AcpFactory that fails, and the factory type is uninhabited (Infallible) off the acp feature. Per feature-lanes.txt the acp lane is partial, covering server::acp and harness::acp::run_turn — not harness::lanes — so a test here would compile under --all-features and run in no lane, which this repo's assert-feature-lanes.sh exists to reject. Widening that lane is worth doing and is not this PR.
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Resolved — the reply explains why it is not a problem (advisory), as of 867d5a6.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
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Resolved — the reply explains why it is not a problem (advisory), as of 1be7634.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
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| if let Some((agent_id, sentence)) = harness_binding(detail) { |
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Require a genuine router error before classifying harness failures
The classifier still relies on an unanchored substring match. An unrelated provider or tool error such as provider returned: agent \researcher` is bound to harness `runner`, but model startup timed outsatisfies both markers and theHARNESS_NO_ENGINE_TAIL, so it is reported as harness_unavailable` with a model-settings action even though the turn did not fail in the router. The connective check rules out the included lookalike tests but does not distinguish quoted or echoed router-shaped text from an actual router error; use a structured error/source signal or require the complete known router sentence shape at the relevant boundary.
[RULE] ambiguous-error-classification ·
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Already weighed on the sibling thread — see comment 4048021209 for the full reasoning (why the fix has to be a schema/design-level signal the router can write and that survives being read back as stored text, not a tighter substring match, plus the blast-radius assessment). Filing as a follow-up issue rather than re-litigating here.
| let after_harness_name = &detail[bound + HARNESS_BOUND_MARKER.len()..]; | ||
| let closing_backtick = after_harness_name.find('`')?; | ||
| let tail = &after_harness_name[closing_backtick..]; | ||
| if !(tail.starts_with(HARNESS_WARMUP_TAIL) || tail.starts_with(HARNESS_NO_ENGINE_TAIL)) { |
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Require the complete router sentence before classifying
This only verifies the fixed prefix and then accepts any remainder after ", but " or ", whose last warm-up failed: ". A provider response or other untrusted diagnostic can therefore quote that prefix and be classified as harness_unavailable, causing the UI to present the wrong recovery action and populate pair_agent_id from attacker-controlled text. Match a structured router marker or validate the complete sentence shape, rather than treating arbitrary trailing text as a router error.
[RULE] overbroad-error-classification ·
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Right that the connective check narrows the match without anchoring it, and I am not going to claim otherwise. But the substring match is forced by the design, not chosen over a structured alternative that is sitting there:
classify does not run once at the failure site. MessageView::project and chat_history re-classify the stored message text on every read, so whatever carries the harness signal has to survive persistence as text. A typed error variant does not; it is gone by the time the message is read back. That is also why this function has to be idempotent over its own output.
So the real fix is a signal only the router can write — either a stored code column on the message record, or a \u{0} sentinel of the kind AGENT_MARKER already uses in this file, emitted by HarnessRouter::engine_for and required by harness_binding. Both are schema/design changes across the settle path and the message store, not something to bolt onto a review cycle on a classifier arm.
On blast radius, so the deferral is judged and not waved through: a forged match sets code = harness_unavailable and pair_agent_id from the text, which renders one link — #/company/agent/<id>?tab=model. It is a React-rendered href fragment, so the id is escaped and grants nothing; the failure mode is a misleading recovery button on a turn that failed for another reason, and with e138108 the message it sits under no longer carries anything captured. Wrong, worth fixing, not a hole.
Filing that as a follow-up issue together with the three e2e-coverage findings unless you would rather it block here.
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Resolved — the review agent found this finding fixed in the new code, as of 867d5a6.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
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Resolved — the review agent found this finding fixed in the new code, as of 1be7634.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
| * chosen" at all, a keyless provider, or a model the catalogue no longer | ||
| * lists — is a fix on the company-wide LLM page. | ||
| */ | ||
| export function turnFailureAction( |
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Verify the harness-unavailable action button renders in an e2e test
The frontend logic that renders an action button for harness_unavailable is only unit-tested (frontend/test/unit/turn-failure.test.ts). No browser end-to-end test opens a room with a chat thread that contains a harness_unavailable failure, renders the resolution bar, and asserts that the "Open Model settings" button is visible, contains the correct agent id in its href, and navigates to the correct tab. Without that, a regression in the MessageRow.tsx rendering or the chat.ts deserialization path would not be caught by CI.
[RULE] missing-e2e-coverage ·
…ce (tinyhumansai#2394) The warm-up branch forwarded the lane's own `{err}` into chat, where it can carry a path, a command line or provider output. Cut the sentence at `whose last warm-up failed`; the reason stays on the run record and in the logs. The tail constant stops before its `: ` so the cut sentence still classifies to itself on re-read.
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Requesting changes: 2 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
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security: $0.0099 · 165,892 in / 9,102 out · 11,578 cached (7%) · gpt-5.6-luna
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description: $0.0009 · 17,868 in / 419 out · 0 cached (0%) · deepseek/deepseek-v4-flash
| return Some((agent_id.to_string(), format!("{named}."))); | ||
| } | ||
| if tail.starts_with(HARNESS_NO_ENGINE_TAIL) { | ||
| return Some((agent_id.to_string(), detail[opener..].trim().to_string())); |
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Do not expose raw harness diagnostics in chat
The no-engine branch copies the entire remainder of detail into the operator-facing message. Unlike the warm-up branch, this is not bounded to a fixed sentence: a router detail such as agent researcheris bound to harnessrunner, but the subprocess failed with token=... will be persisted and sent over the wire, exposing arbitrary host or provider diagnostics. Return a fixed sanitized message for this branch, or extract only the trusted harness identity and use a constant explanation.
[RULE] diagnostic-information-disclosure ·
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Fixed at the mint site in 867d5a6. The no-engine branch here forwards the unavailable reason verbatim, but that reason is now guaranteed to be authored text for every lane — harness/lanes.rs's ACP factory error (the one path that previously interpolated a caught error, naming a resolved adapter path/argv) now maps to a fixed line and logs the real error via tracing::warn! instead. The invariant is documented in harness_binding's doc comment. No test added for this one specifically (see the reasoning already posted on the sibling thread, comment 4049168546) — reaching the ACP factory failure needs a fixture that fails to build, and that type is uninhabited off the acp feature per feature-lanes.txt.
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Resolved — the reply explains why it is not a problem (advisory), as of 1be7634.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
| .await | ||
| .expect_err("a bound-but-unavailable harness must fail the turn"); | ||
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| let got = crate::company::inference::copy::classify(&err.to_string()) |
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Drive harness_unavailable through the full operator path
This only calls the classifier directly on a router error. It does not exercise the operator turn handling, wire serialization, history projection, or frontend consumption, so a regression could still make the live turn show generic retry text or omit harness_unavailable/pairAgentId while this test passes. Add an end-to-end scenario that sends a turn against an unavailable harness and asserts the classified notice reaches the UI.
Additional security observation
Require the complete router sentence before classifying
[RULE] ambiguous-error-classification
The test proves that one genuine router error classifies, but it does not prevent an unrelated provider or tool error containing the same fragments from classifying as harness_unavailable. The classifier must require the complete known router sentence shape at the boundary, or use structured error provenance, and tests should include quoted/embedded lookalikes.
Additional critique observation
Require the complete router sentence before classifying
[RULE] ambiguous-error-classification
This test accepts classification from the stringified error without checking that the classifier matched the complete router-owned sentence rather than a partial substring. The added coverage therefore does not address the existing lookalike-error case, where a provider error can quote the same agent/harness wording and incorrectly receive a model-settings action.
Additional critique observation
Require the complete router sentence before classifying
[RULE] ambiguous-error-classification
The positive test only proves that one genuine router error is accepted; it does not protect against an unrelated provider or tool error containing the same fragments being classified as harness_unavailable. Add negative cases with quoted or echoed router-shaped text, or change classification to use a structured router error/source signal and require the complete known sentence shape.
Additional security observation
Require a genuine router error before classifying harness failures
[RULE] ambiguous-error-classification
This new assertion covers only the positive case: an error produced by the router is passed to the classifier. It does not establish that classification is rejected when a provider or tool error merely quotes or embeds router-shaped text. Add negative tests for those cases and tighten the classifier's boundary/provenance check so a non-router failure cannot receive a model-settings action.
[RULE] missing-end-to-end-coverage ·
| format!("{sentence} {HARNESS_RETRY_NOTE}") | ||
| }; | ||
| return Some(ResolutionFailure { | ||
| code: HARNESS_UNAVAILABLE_CODE, |
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Verify the harness-unavailable action button renders in an e2e test
The backend now emits a classified failure with an agent id, but no browser end-to-end test opens a room containing this failure and verifies that the resolution bar renders the action button, uses the correct agent id in its link, and navigates to the Model tab. Unit-testing classification cannot catch a regression in wire deserialization or MessageRow rendering.
[RULE] missing-e2e-coverage ·
| got.code, | ||
| crate::company::inference::copy::HARNESS_UNAVAILABLE_CODE | ||
| ); | ||
| assert_eq!( |
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Verify the harness-unavailable action in a browser test
Checking pair_agent_id in this unit test does not verify that the frontend deserializes it, renders the resolution bar, produces the Model-settings link, or navigates to the correct agent. Add a browser-level test with a classified harness-unavailable history/live message and assert the button label, href, and destination tab.
[RULE] missing-e2e-coverage ·
| /// resolution failure in the provider/model sense, but the same class of | ||
| /// thing to the person reading the thread — a named setting is wrong, and no | ||
| /// amount of resending clears it — so it travels the same wire fields. | ||
| pub const HARNESS_UNAVAILABLE_CODE: &str = "harness_unavailable"; |
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Drive the harness_unavailable code path end to end
The new wire code and agent id are covered only by classifier/unit-style tests. No end-to-end scenario configures an unavailable harness, sends a turn, and verifies that the classified notice—not the generic retry message—with harness_unavailable and pairAgentId reaches the frontend. Add a full-stack test covering the unavailable harness path.
Additional critique observation
Drive the new harness_unavailable code path end to end
[RULE] missing-end-to-end-coverage
The new wire code is covered only by classifier unit tests. There is still no full-app scenario with a declared harness that has no runnable engine asserting that the operator receives the classified notice, harness_unavailable and pairAgentId reach the frontend, and the resulting action navigates to the agent's Model tab. A regression in the router-to-operator-to-history/SSE wiring can therefore ship while these tests remain green.
[RULE] missing-end-to-end-coverage ·
| /// must classify too — a lane that came up and then broke is the case an | ||
| /// operator is most likely to meet. | ||
| #[tokio::test] | ||
| async fn a_failed_warm_up_classifies_for_the_operator() { |
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Exercise warm-up failure through the full application
This test validates only the router's direct error and classifier output. It does not exercise the full application path from warm-up failure through operator turn handling, persistence/SSE, and UI rendering. Add a real e2e scenario that causes a lane warm-up failure and verifies the classified notice reaches the operator without the raw warm-up diagnostic.
Additional critique observation
Exercise warm-up failure through a full application turn
[RULE] missing-e2e-coverage
This test stops at classify(&err.to_string()) and never boots the application or sends the failure through operator persistence and the UI. A regression in the wiring between warm-up state, engine_for, operator error handling, and the rendered notice would therefore remain undetected. Add a real end-to-end warm-up-failure scenario.
[RULE] missing-end-to-end-coverage ·
| let named = detail[opener..tail_at + HARNESS_WARMUP_TAIL.len()].trim(); | ||
| return Some((agent_id.to_string(), format!("{named}."))); | ||
| } | ||
| if tail.starts_with(HARNESS_NO_ENGINE_TAIL) { |
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Require the complete no-engine sentence before classifying
This accepts any text whose harness name is followed by , but ; it does not validate the router's complete no-engine sentence or its fixed continuation. A provider or tool error can therefore be classified as harness_unavailable and send the operator to model settings even though the router never produced this failure. Match the complete known router shape, or pass a structured router error to the classifier.
Additional critique observation
Require the complete router sentence before classifying
[RULE] ambiguous-error-classification
This accepts any text after the harness closing backtick as long as it starts with , but . For example, provider returned: agent researcheris bound to harnessrunner, but the provider request timed out is classified as harness_unavailable even though it need not have come from HarnessRouter::engine_for. Require the exact known no-engine sentence shape, or use a structured router error/source signal, before assigning the harness code.
[RULE] ambiguous-error-classification ·
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Same design constraint as the sibling finding — see comment 4048021209. The fix needs a signal the router can write that survives being persisted and re-classified as stored text on every read (a stored code column, or a sentinel like AGENT_MARKER), not a tighter substring match on this branch specifically. Tracked in the same follow-up issue.
| /// the tail is matched without its `: ` — and both `MessageView::project` and | ||
| /// `chat_history` re-classify the stored text on every read. | ||
| fn harness_binding(detail: &str) -> Option<(String, String)> { | ||
| let bound = detail.find(HARNESS_BOUND_MARKER)?; |
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Require a genuine router error before classifying harness failures
The classifier searches for the router-shaped fragments anywhere in the error text. An unrelated error such as provider returned: agent \researcher` is bound to harness `runner`, but model startup timed outstill satisfies these searches and is reported asharness_unavailable`. The connective tests only reject one lookalike layout; they do not establish that the router generated the sentence. Use structured error provenance or require the exact sentence at the relevant error boundary.
[RULE] diagnostic-error-classification ·
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Duplicate of the design point already answered in comment 4048021209 — see there for the reasoning and the blast-radius assessment. Same follow-up issue as the other ambiguous-classification findings on this PR.
| /// The router's other sentence shape — a warm-up failure rather than no | ||
| /// engine at all — classifies the same way. | ||
| #[test] | ||
| fn a_warm_up_failure_sentence_classifies_too() { |
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Exercise the warm-up-failure path through a real e2e scenario
The warm-up-failure branch is tested with a hand-written sentence but is not exercised by an end-to-end test that boots the application, triggers a lane warm-up failure, sends a turn, and verifies the classified notice reaches the UI. Without that coverage, regressions in the wiring between warm-up state, router dispatch, operator persistence, and frontend rendering can pass.
[RULE] missing-e2e-coverage ·
| an ACP harness and this build has no ACP transport wired."; | ||
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| #[test] | ||
| fn a_harness_binding_failure_classifies_and_names_the_agent() { |
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Verify the harness-unavailable action in an e2e test
The new classification supplies the agent id used by the frontend action, but these tests stop at the classifier and do not render a real history or live chat failure. Add a browser e2e test that verifies the action is visible, uses the agent-specific destination, and navigates to the Model tab.
[RULE] missing-e2e-coverage ·
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Legitimate gap, same class as the other e2e-coverage findings on this PR (see comments 4047793039, 4047793278, 4047793533) — no e2e today drives harness_unavailable through a booted app end to end. Rolling this into the same follow-up e2e-coverage issue rather than adding one-off tests per anchor.
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
… reason (tinyhumansai#2394) `resolve_acp_engine` interpolated `factory.build`'s error into the reason it records, which the router writes into its sentence and the classifier forwards to company chat — so a resolved adapter path or argv could reach a reader. The reason is now a fixed line and the error goes to the log. This is the invariant `copy.rs` relies on to keep the no-engine tail: every `unavailable` reason is authored text, never a captured failure.
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Requesting changes: 4 lane(s) blocking, worst finding is high.
Fix or reply to the findings below and push. The next review clears this automatically once they are gone — you should not need to dismiss anything by hand.
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| // company chat, so it stays a fixed line; the adapter's own error can | ||
| // name a resolved binary path or its argv. | ||
| tracing::warn!(acp_agent = %agent_id, %error, "ACP adapter could not be started"); | ||
| format!("its `{agent_id}` adapter could not be started on this host") |
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Drive harness_unavailable through the full operator path
This new adapter-start failure is converted into the router's harness-unavailable reason, but the repository context shows no test exercising resolve_acp_engine. A unit-level check would not catch regressions that reintroduce the raw adapter error during operator turn handling, persistence/SSE serialization, history projection, or UI rendering. Add an end-to-end scenario that makes the ACP factory fail to start, sends a turn, and verifies the fixed sanitized notice and harness_unavailable metadata reach the operator.
[RULE] missing-end-to-end-coverage ·
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Same judgement as the other e2e-coverage findings on this PR (see comments 4047793039, 4047793278, 4047793533) — an e2e that forces a genuine ACP adapter-start failure needs a fixture the acp feature lane doesn't build today (the factory type is uninhabited off that feature per feature-lanes.txt). Folding this into the same follow-up e2e-coverage issue.
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Resolved — the reply explains why it is not a problem (advisory), as of 1be7634.
If this is wrong, reopen the conversation and say so; the finding will be re-raised on the next push if it still reproduces.
| } else { | ||
| format!("{sentence} {HARNESS_RETRY_NOTE}") | ||
| }; | ||
| return Some(ResolutionFailure { |
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Exercise harness-unavailable through the full application path
The new classification arm is only exercised by direct classifier/router-style tests in the surrounding change. There is no end-to-end scenario here that boots with an unavailable or warm-up-failed harness, sends a turn, and verifies the classified code, pairAgentId, sanitized message, persistence/history projection, and rendered operator notice. A regression in any of that wiring can pass the parser tests while the live path remains generic or leaks diagnostics.
[RULE] missing-end-to-end-coverage ·
| } | ||
| } | ||
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| if let Some((agent_id, sentence)) = harness_binding(detail) { |
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Exercise warm-up failure through a real end-to-end scenario
The warm-up-failure parser is isolated from the application path that produces it. Add a scenario that causes lane warm-up to fail, sends an actual turn, and verifies that the sanitized classified notice reaches the operator UI without the raw warm-up reason. This is distinct from checking classify on a hand-written sentence.
[RULE] missing-e2e-coverage ·
| /// resolution failure in the provider/model sense, but the same class of | ||
| /// thing to the person reading the thread — a named setting is wrong, and no | ||
| /// amount of resending clears it — so it travels the same wire fields. | ||
| pub const HARNESS_UNAVAILABLE_CODE: &str = "harness_unavailable"; |
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Drive harness_unavailable through the full operator path
The new failure code is only covered by classifier-level tests. There is no end-to-end scenario in this change that boots with an unavailable or warm-up-failed harness, sends a turn, verifies operator persistence and the wire payload, and checks the rendered notice. A regression could therefore preserve these unit tests while dropping the code, pairAgentId, or sanitized message in the live path.
[RULE] missing-e2e-coverage ·
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| /// Appended to the harness sentence, which names the gap but not whether | ||
| /// waiting helps. | ||
| const HARNESS_RETRY_NOTE: &str = "Retrying will not help until that harness can run."; |
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Verify the harness-unavailable action in a browser
This introduces a new operator-facing failure classification and remediation message, but the changed behavior is not exercised by a browser/e2e test that verifies the harness-unavailable action renders and navigates correctly. Add that scenario alongside the backend path test so the new wire code cannot silently produce a missing or broken action in the UI.
[RULE] missing-e2e-coverage ·
| failure: Pick<TurnFailure, "code" | "pairAgentId">, | ||
| ): { label: string; href: string } | null { | ||
| if (failure.code.startsWith("pair_")) { | ||
| if (failure.code.startsWith("pair_") || failure.code === HARNESS_UNAVAILABLE_CODE) { |
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Verify the harness_unavailable action button renders and navigates in an e2e te…
The frontend unit test checks that turnFailureAction returns the correct href for harness_unavailable, but there is no browser-based end-to-end test that renders the button, clicks it, and verifies the navigation. A regression in the rendering or routing path would not be caught. Add an e2e test that boots the application with an unavailable harness and asserts the action button appears and navigates to the agent's Model tab.
Additional e2e observation
Verify the harness_unavailable action button renders in an e2e test
[RULE] missing-e2e-coverage
The frontend unit test covers the action function, but no e2e test verifies that the button actually renders and navigates correctly when a harness_unavailable failure is received via SSE. Add a browser test that intercepts an SSE event with harness_unavailable and asserts the action button appears and links to the correct agent Model tab.
[RULE] missing-e2e-coverage ·
| /// quietly dropping this class back into the generic notice. | ||
| /// | ||
| /// [`HarnessRouter::engine_for`]: crate::harness::router::HarnessRouter | ||
| const HARNESS_BOUND_MARKER: &str = "` is bound to harness `"; |
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Drive harness_unavailable through the full application path end to end
The new classification logic for harness binding failures is tested in isolation and with router integration tests, but no e2e test boots the application, sends a turn against an unavailable harness, and verifies the classified notice reaches the UI. A regression in the wiring between HarnessRouter, operator error handling, persistence, and SSE could ship without detection.
[RULE] missing-e2e-coverage ·
| /// sentence [`harness_binding`] itself emits. | ||
| /// | ||
| /// [`HarnessRouter::engine_for`]: crate::harness::router::HarnessRouter | ||
| const HARNESS_WARMUP_TAIL: &str = "`, whose last warm-up failed"; |
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Exercise the warm-up-failure path through a real e2e scenario
Same as above but specifically for the warm-up-failure variant. The integration test drives the router but does not simulate a full application turn with warm-up failure. Add an e2e test that causes a warm-up failure and asserts the classified notice reaches the operator.
[RULE] missing-e2e-coverage ·
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@senamakel ready for review. Two notes on the state of the checks. Two real findings came out of review and are fixed here.
Both are covered by tests that fail against the pre-change source. The cut form is matched without its The four red tinysweeper lanes are one deferred item, not an outstanding defect. Every finding on the current head is the Unless you would rather it block here, I will file it as a follow-up together with the classifier-anchoring finding from round 2. CodeRabbit approved at Three defects found while tracing the other failure paths are written up in the PR body and are deliberately not fixed here — a scheduled-agent cron that swallows the reason and aborts its whole tick, a chat-initiated hand-off that strands its work card, and a notification-title asymmetry. Happy to file those as issues too. |
The acp lane covered server::acp and harness::acp::run_turn only, so nothing under harness::lanes ran anywhere the acp feature was on. The adapter-start path lives there and is compiled out without that feature, which left it unreachable from every lane.
…son (tinyhumansai#2394) Drives resolve_acp_engine with a factory that fails naming a path and an API key, and asserts neither reaches the recorded reason while the adapter id still does. Verified to fail against the pre-fix map_err, which reproduced the leak verbatim.
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Actionable comments posted: 1
- 🪄 Fix CodeRabbit comments on this PR
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only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
In `@crates/opencompany-core/src/harness/lanes_tests.rs`:
- Around line 212-214: Update resolve_acp_engine and its tracing::warn! call to
stop formatting the raw ACP adapter error; log only fixed text plus explicitly
safe metadata, while preserving the existing OpenCompanyError::Harness behavior
for the missing executable case.
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The previously-blocking findings are resolved. Clearing the changes request.
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…inyhumansai#2394) tracing_layer maps WARN to EventFilter::Breadcrumb, so the adapter's own error left the process with any crash report. It carries a resolved binary path and the argv it was invoked with, which can include a key. The warn keeps the agent id and the error drops to debug, which the filter ignores.
1 participant
Summary
When a teammate is bound to a harness this host cannot run,
HarnessRouter::engine_forfails the turn with a sentence naming the agent, the harness and the specific reason — deliberately, rather than silently falling back to another agent's engine.That sentence reaches a human on most paths. On the chat path it did not.
classify(src/company/inference/copy.rs) recognised none of it, so the reply fell through to the genericturn_failure_notice— "This turn couldn't be finished — something went wrong or a step took too long. Nothing was left half-done. Send the message again to retry." The harness name was gone, the reason was gone, and the advice was wrong: resending cannot clear a harness that has no engine.This adds one classifier arm, which lights up a chain that already exists end to end (
resolution_user_facing→TurnFailureNotice), and points the notice's action button at the tab that actually owns the harness binding.Before starting, every path a bound-harness failure can travel to a human was enumerated. The table below is the result — paths already healthy included, because "we checked and it works" is the finding that keeps this PR from being wider than it needs to be.
Path enumeration
server/operator.rsErr arm →classifydid not match → generic noticebrain.rs:1425"dispatch failed: {err}"→settle→card.note;bounced_reason;RunOutcome.error. Rendered atTaskDetailView.tsx:1128/1969,TaskCard.tsx:434,AttemptCard.tsx:153,AgentRuns.tsx:834brain.rs:1305"hand-off failed: {err}", then path 2's settledelegation.rs:2497→:1685?→brain.rs:4361?→ cycle error → path 1workflows/caps/mod.rs:2730"harness agent '{ref}': {reported}"→ attempt row + run-level error. Rendered raw atRunHistoryPanel.tsx:838;stripEnginePrefixesdoes not touch this prefixports/workflow_runner.rs:402-425carries status + config diagnostics only; the reason lives on the attempt row (5)caps/mod.rs:1818storesreasonunmodified — but only ifclassify_blocker_messagerecognises the interpolated tail, andapproval_visibility.rs:39withholds payload from non-admins. The bare router wording parks nothing and falls through to (5)advance.rs:264puts the full sentence in a company-wide title. See the leak note belowworkflow_spawn.rs:485Err(_)→ constantRUN_FAILED_DETAILpointing at run history. Deliberate: the notification is company-wideActivityTab.tsx:203rendersrow.titleworkflow_scheduler.rs:914uses the same spawn path as (5)[[schedule]]cronsbrain.rs:4731?→scheduler.rs:494tracing::warn!only. No journal row, no notification, no console surfaceadvance.rs:130,brain.rs:1737,brain.rs:1891,workflow_build.rs:739all route through the pureadvance::bounced_reasonturn_settledoperator.rs:2287dropserroron purpose; pinned byoperator_test_group_11.rs:627Does this arm leak a diagnostic to end users?
No, and it strictly reduces one.
detail. It cuts the sentence at theagent `that opens it, which strips theOpenCompanyError::ConfigDisplay prefix — soconfiguration error: …no longer prefixes what a reader sees.the_display_prefix_never_reaches_the_readerand a router-driven assertion both pin this.lanes::unavailable_reason("it is an ACP harness and this build has no ACP transport wired — run it from the desktop app, or bind these agents to abuilt_inharness"). No stack trace, no provider response body, no credential.Displayof the lane's ownensureerror, and for alocalACP harnessresolve_acp_engine's tail is a subprocess-spawn error that can name a local path. That is pre-existing text, unchanged by this PR, and already visible on paths 2/5/13.turn_settledprojection is untouched.Deliberately not fixed here
Both are real defects the enumeration turned up. Neither is a "the reason doesn't reach a human" fix, and both need their own design, so they are reported rather than bolted on:
CompanyScheduler, which needs dedup: a harness that is down stays down, and a per-minute cron would post a notification every minute. The rate-limiting design is the whole job and does not belong in this PR.delegation.rs:2411mints the hand-off card inin_progressbefore the delegate runs;delegation.rs:2497returns early on error, so it never reaches asettle_work_card. On the chat pathrun_sinkisNone, so there is no run row — which means neither the cycle terminality backstop (cycle.rs:1156) nor the boot reaper sees it. The card sits in In Progress with no note and no bounce chip. This PR makes the operator see the reason in chat, but the card is still stranded.cycle.rs:1197-1203). The cycle backstop deliberately shields the company-wide notification title behind a constant whilebrain.rs:1761puts the full sentence in it. Pre-existing and untouched, but the two should agree.API Or Behavior Changes
harness_unavailableon the existing turn-failure fields (userFacing,code,message,pairAgentId,providerSlug). Additive — every other reply's frame shape is unchanged.pairAgentIdis now populated for this code, read out of the sentence rather than from awith_agent_markertrailer (the router has only the raw id at the point it fails, and the id is already in the text it wrote).TurnFailureNoticenaming the harness and the reason, with an "Open Model settings" button, instead of a plain generic bubble telling the operator to retry.harness_unavailablejoins thepair_*bucket inturnFailureAction— the teammate's Model tab (?tab=model), whose own hint reads "The harness and model it thinks with". The LLM page has no control that fixes a harness binding.RunTurn, toHarnessRouter's sentences, or to the SSEturn_settledprojection.Tests
One new test was shown to fail against the pre-change source before it passes — three Rust and three console, in fact:
9 passed; 3 failed—an_unavailable_harness_classifies_for_the_operator,a_failed_warm_up_classifies_for_the_operatorandreclassifying_the_stored_sentence_is_a_no_opeach panicked on "the router's own sentence must classify". With the arm in place:12 passed.turnFailureActionarm reverted:3 failed | 2 passed. With it: green.The router tests are a coupling test, not a literal-string test: they drive the real
HarnessRouter(both the no-engine and the failed-warm-up spellings) and assert the real error still classifies, so a reword inrouter.rsfails CI rather than quietly dropping the class back into the generic notice.Note on lanes:
harnessis behindfeature = "openhuman", sorouter_tests.rsruns in the existing gated lane alongside the router tests already there — no new lane and nofeature-lanes.txtchange. The classifier itself is ungated, socopy_tests.rscovers the arm on the default lane too. No test was added under--features acp.cargo fmt -p opencompany-core --checkcargo check -p opencompany-corecargo clippy -p opencompany-core --no-deps --all-targets -- -D warningscargo clippy -p opencompany-core --features openhuman --no-deps --all-targets -- -D warningscargo test -p opencompany-core --lib company::inference::copycargo test -p opencompany-core --lib server::operator::resolution_failure_wire_testscargo test -p opencompany-core --lib server::operator::turn_failure_notice_testscargo test -p opencompany-core --features openhuman --lib harness::router::testscargo test -p opencompany-core --features openhuman --lib company::inference::copybash scripts/ci/assert-rs-source-layout.shnpm run typecheck/typecheck:unit/typecheck:e2enpx vitest runEvery filtered Rust run is reported with its
running N testsline, since a filter matching zero tests exits 0.Documentation
docs/key-reworks/in-use-guards.md§5 updated:harness_unavailableadded to thecodevocabulary with a note that it comes fromHarnessRouter::engine_forrather than a resolver, and thepairAgentIdrow amended to say this code also carries one.Closes #2394 in part — this is step 6 of the rollout.
Summary by CodeRabbit
New Features
Bug Fixes
Documentation