fix(ci): parse clang-tidy analyzer warning suffix

[ankit25bcs10610]

Summary

Closes #2442 (the clang-tidy diagnostic parsing part).

When WarningsAsErrors: '*' is enabled, clang-tidy renders analyzer diagnostics as:

[clang-analyzer-core.NullDereference,-warnings-as-errors]

The lint memory gate only accepted [check], so it silently discarded these findings and could report a clean gate. This change accepts the optional suffix while preserving the existing whitelist key (clang-analyzer-core.NullDereference).

Validation

• tests/test_lint_mem_gate.sh
• python3 -m py_compile scripts/lint-mem-gate.py
• git diff --check

The regression test proves that a suffixed analyzer finding matches its normal whitelist entry and is counted as an argued finding.

Written with the assistance of an AI coding agent; the commit is DCO-signed by the submitting account.

[github-actions]

Thanks for opening this — it has been seen, and it is queued.

This note is automated, but it is not a brush-off: it exists so you know where your PR stands instead of having to guess from silence.

Current review status: working through a backlog. 0.9.1-rc.1 is out, so the release freeze that held reviews is over — but it left a large queue of open pull requests behind it, and we are reading through them oldest-first. The background is in discussion #1144.

What that means for this PR, concretely:

• It will not be closed for inactivity. No stale bot touches pull requests here.
• It may still sit a while before a human reads it. That is on us, not on you.
• Older PRs are read first, so a recent one is not being skipped — it is behind a queue.

Things that will genuinely speed it up whenever review does happen:

• Keep it rebased on main — the tree is moving quickly right now, and a conflicting branch cannot be reviewed as the diff you intended.
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If this fixes a bug, a reproduction we can run is worth more than a description of the symptom.

Thanks for contributing, and sorry in advance for the wait.