fix(server): log why the Claude capability probe failed

[oliwer-cpu]

What Changed

probeClaudeCapabilities now logs Claude capability probe failed. before it turns the failure into undefined. The log includes the failure's errorTag, the rejection's error class (causeName), and timeoutMs for a TimeoutError. It does not log the rejection message. Effect.tryPromise only wraps it in a generic message, and the raw SDK text could carry subprocess output, so this follows the CLI health checks in the same file, which log exit codes and output lengths but not output.

There are two regression tests:

• A probe whose initializationResult() never resolves times out, returns undefined, aborts the SDK query, and logs errorTag: "TimeoutError" with timeoutMs: 25000.
• A probe that rejects logs errorTag: "UnknownError" with causeName: "TypeError", and the rejection message does not appear in the log.

It changes 9 lines in ClaudeProvider.ts and adds two tests. There is no behavior or UI change.

Why

Refs #13635. On a headless t3 serve host, a short stall made the probe exceed its 25 s timeout. The Claude card then said "Could not verify Claude authentication status from initialization result." for hours, even though claude auth status reported logged in and turns kept working. The probe ends in Effect.result → undefined, and checkClaudeProviderStatus adds orElseSucceed(() => undefined), so the real cause (timeout, spawn failure, SDK init error) was never recorded anywhere. That makes this warning impossible to diagnose from the server logs. Logging where the failure is swallowed is the smallest change that keeps the cause, and it doesn't touch the caching or the status contract.

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes (n/a, no UI change)
• I included a video for animation/interaction changes (n/a)

Verification: the timeout test fails on main (expected [] to include 'Claude capability probe failed.') and passes with the fix. ClaudeCapabilitiesProbe.test.ts + ProviderRegistry.test.ts: 58/58 pass. tsc --noEmit for apps/server is clean. vp lint and vp fmt --check are clean on the changed files.

Done with Claude Opus 5.5 in Claude Code.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Updated Claude capability-check failure logs to report the error type and, for timeouts, the timeout duration. Error messages—including potentially sensitive subprocess output—are no longer included. Failed checks continue to return no capabilities.

[macroscopeapp]

Approvability

Verdict: Approved at 1e2f5aa

Macroscope's review found this PR approvable — The PR adds bounded warning diagnostics for an already-existing Claude capability-probe failure path and preserves the existing timeout, abort, and undefined-result behavior. Its accompanying regression test is isolated to the test harness, with no product-default, schema, deployment, security, or static-analysis changes.

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 1e2f5aa and 44a72c6.

📒 Files selected for processing (2)

• apps/server/src/provider/Layers/ClaudeCapabilitiesProbe.test.ts
• apps/server/src/provider/Layers/ClaudeProvider.ts

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📝 Walkthrough

Walkthrough

The Claude capability probe warning now omits error messages. It logs the error tag, the cause name when available, and the timeout duration for timeout failures. Tests cover timeout and rejected-initialization failures.

Changes

Claude capability probe logging

Layer / File(s)	Summary
Failure logging and probe tests apps/server/src/provider/Layers/ClaudeProvider.ts, apps/server/src/provider/Layers/ClaudeCapabilitiesProbe.test.ts	The warning logs the error tag and cause name when available, without logging SDK or subprocess text. Timeout failures include the timeout duration. Tests verify timeout handling, signal abortion, logged fields, and omission of secret subprocess output.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Feature

Suggested reviewers: t3dotgg

Merge Risk: ⚪ Minimal · up to 44a72

The probe still returns no capabilities on failure while logging diagnostic fields without the tested subprocess output. No merge-blocking issue is identified.

Security Architecture Review

Security architecture risk: 🟡 Moderate · up to 1e2f5

Provider status and probe permissions remain unchanged, but failure text is now written to server logs and may reach a configured log collector. Whether that text can contain secrets has not been established.

Retained concerns

• Medium · security · inferred: Unfiltered SDK failure text can cross from the Claude subprocess into console logs and, when configured, exported log records. If a failure includes sensitive stderr, the new warning could disclose it to log readers or the collector.

Security review details

Security Blast Radius

• inferred — The potential exposure is bounded to server log readers and, where enabled, the configured OTLP log destination. No new probe caller, tool authority, or public status field is evidenced.

Security Findings and Attack Paths

• inferred — If an SDK initialization failure carries sensitive subprocess output in its message, the new detail field could send that output to server logs. The inspected evidence does not establish that a credential-bearing failure occurs or that this specific SDK error reaches initializationResult.

Trust Boundaries and Controls

• observed — The probe's existing no-prompt, no-hooks, no-tools, and strict-MCP settings constrain SDK activity, but do not redact a rejected error message before logging.

Resilience and Maintainability Implications

• observed — The added timeout test confirms that warning emission does not prevent the probe from returning undefined and aborting its SDK query on timeout.

Hardening Proposals

• proposed — Keep the diagnostic tag and timeout, but allowlist or redact failure details before sending them to logs, particularly for errors that can include subprocess output.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 2…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the server fix and the specific Claude capability probe logging change.
Description check	✅ Passed	The description includes complete What Changed and Why sections, addresses UI requirements as not applicable, marks the checklist, and provides verification results. It clearly explains the logging be…

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Actionable comments posted: 1

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🤖 Prompt to fix review comments

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Inline comments:
In `@apps/server/src/provider/Layers/ClaudeProvider.ts`:
- Line 403: Update the error logging around claudeQuery and initializationResult
so detail uses the original rejection message from Effect.tryPromise’s cause
when present, falling back to error.message otherwise. Add a rejection test that
verifies the logged detail contains the original SDK error message.

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📥 Commits

Reviewing files that changed from the base of the PR and between e5a46d6 and 1e2f5aa.

📒 Files selected for processing (2)

• apps/server/src/provider/Layers/ClaudeCapabilitiesProbe.test.ts
• apps/server/src/provider/Layers/ClaudeProvider.ts

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