fix: relax agent version probe timeout

[willkill07]

Overview

Give agent CLI version checks a longer cold-start allowance without slowing network diagnostics.

• I confirm this contribution is my own work, or I have the right to submit it under this project's license.
• I searched existing issues and open pull requests, and this does not duplicate existing work.

Details

• Use a dedicated 10-second timeout for agent version probes.
• Retain the 2-second timeout for live network health checks.

Where should the reviewer start?

Review the version-probe timeout in crates/cli/src/diagnostics/mod.rs.

Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)

• Closes RELAY-881

Summary by CodeRabbit

• Bug Fixes
  • Improved reliability of agent CLI version detection by allowing more time for version probes to complete.
  • Preserved cleanup behavior when a version probe times out.

[coderabbitai]

Walkthrough

The CLI adds a dedicated 10-second timeout for agent version probes. Network operations retain their separate 2-second timeout. Timed-out agent processes continue to be terminated.

Changes

Diagnostics timeout

Layer / File(s)	Summary
Version probe timeout crates/cli/src/diagnostics/mod.rs	Defines VERSION_PROBE_TIMEOUT as 10 seconds and applies it in probe_version. The probe continues to suppress standard error and terminate the child process when the timed operation is dropped.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Bug fix

Merge Risk: 🔵 Low · up to 542af

A timed-out agent probe may leave its child process insufficiently cleaned up, causing a bounded process or resource leak.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
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 follows Conventional Commits format, uses the allowed fix type, clearly describes the timeout change, and is under 72 characters without a trailing period.
Description check	✅ Passed	The description includes all required sections, completed confirmations, implementation details, reviewer guidance, and the related issue reference.

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Actionable comments posted: 1

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Inline comments:
In `@crates/cli/src/diagnostics/mod.rs`:
- Around line 909-926: Update probe_version so the timeout encompasses spawning
and probing while retaining VERSION_PROBE_TIMEOUT separately from the network
timeout. On timeout, explicitly kill the child and await its completion before
returning None, rather than relying only on Child::kill_on_drop(true); preserve
the existing successful output handling.

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📥 Commits

Reviewing files that changed from the base of the PR and between 3c44758 and 542af76.

📒 Files selected for processing (1)

• crates/cli/src/diagnostics/mod.rs

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⏰ Context from checks skipped due to timeout. (13)

• GitHub Check: Rust / Package (linux-musl-arm64)
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• GitHub Check: Rust / Test (windows-arm64)
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• GitHub Check: Rust / Test (linux-arm64)

🔇 Additional comments (1)

crates/cli/src/diagnostics/mod.rs (1)

47-48: LGTM!

Also applies to: 912-913, 919-919, 923-923

[mnajafian-nv]

/merge