[devswha]

Change

Fixes #450.

server/submit.contract.test.ts, "types nothing of a message that waited past its deadline behind another", ran a server with submitDeadlineMs: 50. The deadline is measured from a message's arrival to the start of its turn, and a herdr RPC (agent.prompt) sits in between, so on a busy runner the first message was the one refused. It failed on main pushes and on PRs that touch nothing in server/.

• createServer takes submitDelayMs beside submitDeadlineMs (tests only; unset, it is SUBMIT_DELAY_MS). The test runs with a 1000 ms gap and a 500 ms deadline: the first message has 500 ms to start and the second waits twice its deadline.
• "types the terminal's input line into a waiting agent" asserted the Enter gap >= 120 and read 119. The gap is measured in the pane's process, so it takes the 20 ms tolerance the shell case already has.

No behavior change outside tests, so no changelog line.

Validation

• bun run typecheck
• bun test ./server/submit.contract.test.ts: 19 pass, 3 runs idle and 4 runs with every core busy.

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• server/submit.contract.test.ts

🚧 Files skipped from review as they are similar to previous changes (1)

• server/submit.contract.test.ts

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📝 Summary

Summary by CodeRabbit

• New Features
  • Server setup now accepts an optional submit delay setting, allowing callers to adjust the wait between entering a message and submitting it. The default delay remains unchanged.
• Tests
  • Submit timing checks allow for minor clock differences while still verifying the configured delay.
  • Updated a deadline test to cover a queued message waiting during a longer submit delay.

Walkthrough

createServer accepts an optional delay before pressing Enter. Contract tests allow a 20 ms timing tolerance and use a 500 ms deadline with a 1000 ms submit delay for the queued-message test.

Changes

Submit Timing

Layer / File(s)	Summary
Configurable submit delay server/index.ts	createServer accepts submitDelayMs. submitText uses this value when provided and otherwise uses the 120 ms default.
Submit timing contract tests server/submit.contract.test.ts	The typed-submit timing assertion allows a 20 ms tolerance. The deadline test uses a 500 ms deadline and a 1000 ms submit delay.

Priority: ➖ Normal

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

Change: Other · Severity of issue fixed: Medium

Merge Risk: 🔵 Low · up to dfd4d

The tests allow a small timing tolerance that could miss a delay regression of up to 20 ms. This is a bounded risk and does not appear to block merging.

Architecture Summary

Architecture risk: 🟡 Medium · up to 3f4d2

The change affects 1 system.

Changed systems: server

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — server (service) was modified; 2 changed files map to changed impact.

Before / after behavior

• observed — Modified behavior in server/index.ts: createServer options add submitDelayMs?: number for configuring the delay before the submit Enter.
• observed — Modified behavior in server/index.ts: submitText now waits for options.submitDelayMs when provided, falling back to SUBMIT_DELAY_MS (120 ms), instead of always using the fixed default.
• observed — Modified behavior in server/submit.contract.test.ts: The typed-submit timing assertion now accepts an observed gap of at least SUBMIT_DELAY_MS - 20, replacing the strict SUBMIT_DELAY_MS threshold; the added comment attributes the tolerance to clock skew between the pane process and server.
• observed — Modified behavior in server/submit.contract.test.ts: The timeout test setup changes from a 50 ms deadline with the default delay to a 500 ms deadline and an explicit 1000 ms submit delay; its comments now describe the second message waiting twice its deadline behind the first message’s gap.

Reliability and maintainability

• inferred — Risk-relevant change factors for server: blast_radius_1; direct_dependents_1

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Out of Scope Changes check	⚠️ Warning	The PR also lowers the minimum Enter-gap assertion in “types the terminal's input line into a waiting agent” by 20 ms. Issue #450 concerns the separate queued-message deadline test and does not identi…	Remove the Enter-gap assertion adjustment from this PR, or link it to an active issue that requires the change.
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 2 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the deadline test timing fix and the incorrect 50 ms setting.
Description check	✅ Passed	The description explains the problem, the test changes, and the reported validation results. It covers both required sections.
Linked Issues check	✅ Passed	Issue #450 asks the deadline test to give the first message more time to start while the second still waits past its deadline. server/index.ts adds submitDelayMs with the existing `SUBMIT_DELAY_MS…

Full details: Out of Scope Changes check

Explanation

The PR also lowers the minimum Enter-gap assertion in “types the terminal's input line into a waiting agent” by 20 ms. Issue #450 concerns the separate queued-message deadline test and does not identify this assertion as part of its objective. The linked issue provides no connection for this separate test change.

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Inline comments:
Review comments at @server/submit.contract.test.ts:
- Line 198: Update the timing assertion in the submit contract test to require
the full SUBMIT_DELAY_MS between the text and Enter timestamps; remove the 20 ms
tolerance while preserving the existing enter-index guard.

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• server/index.ts
• server/submit.contract.test.ts

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