test(security): expand verification & audit log coverage

[EffortlessSteven]

Summary

Expands unit-test coverage of crates/flight-security/src/verification.rs. Before this PR the 650-LOC file had only 3 inline tests — well below the 70% project coverage target for blocking-tier crates.

Adds 26 new #[test] functions (29 total) covering:

• VerificationConfig::default() field-by-field defaults
• SecurityVerifier::new / Default initial empty audit log
• audit_event no-op when audit_logging_enabled=false
• Severity routing for all 5 SecuritySeverity variants
• Audit log trimming at capacity (1, 5, no-trim under capacity)
• get_audit_log / clear_audit_log (including double-clear)
• verify_security baseline + fail_on_warnings=true path
• generate_recommendations branches: empty / Critical / High / Medium / Low+Info / Pass-skipped / missing-remediation
• determine_overall_status for all-Pass, empty, any-Fail, Warning with fail_on_warnings flipped
• Serde JSON round-trip for SecurityCheck and AuditEvent

All tests live inside the existing #[cfg(test)] mod tests block. No production code modified, no new dependencies added.

Test plan

• cargo test -p flight-security — 208 tests pass
• cargo fmt -p flight-security -- --check clean for verification.rs
• cargo clippy -p flight-security --lib — new tests trigger no warnings

---

Generated by Claude Code

[gemini-code-assist]

Warning

You have reached your daily quota limit. Please wait up to 24 hours and I will start processing your requests again!

[coderabbitai]

Warning

Rate limit exceeded

@EffortlessSteven has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 38 minutes and 59 seconds before requesting another review.

You’ve run out of usage credits. Purchase more in the billing tab.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: f4230d81-d2c3-4897-acd5-26ff57d2f2c2

📥 Commits

Reviewing files that changed from the base of the PR and between 7d026c3 and e45e2bc.

📒 Files selected for processing (1)

• crates/flight-security/src/verification.rs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/coverage/security-verification-tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}