perf(linter): use precomputed extension

[camchenry]

Very marginally faster to use the precomputed file extension now.

[camchenry]

• perf(linter): allocate strings with some initial capacity #14842
• perf(linter): move up rule retainment into initial collection to reduce allocation size #14822
• perf(linter): id-length: reduce allocations and add more ASCII checks #14821
• perf(linter): use precomputed extension #14819 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #14819 will not alter performance

_{Comparing 10-20-perf_linter_use_precomputed_extension (deb2098) with main (1fcf56c)}

Summary

✅ 4 untouched
⏩ 33 skipped¹

Footnotes

1. 33 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Copilot]

Pull Request Overview

This PR optimizes the file extension retrieval in the linter by using a precomputed extension from the context host instead of extracting it from the path each time.

Key Changes:

• Replaced path-based extension extraction with precomputed extension from ctx_host
• Modified the extension matching logic from contains() to iter().any()

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[camc314]

Merge activity

• Oct 20, 4:50 PM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Oct 20, 4:50 PM UTC: camc314 added this pull request to the Graphite merge queue.
• Oct 20, 4:54 PM UTC: Merged by the Graphite merge queue.