docs: update build performance benchmarks (v2.4.0)

[github-actions]

Automated build benchmark update for v2.4.0 from workflow run #74.

[greptile-apps]

Greptile Summary

Automated benchmark update for v2.4.0 that documents current build and query performance on the project's own codebase.

• Updated performance metrics in both README.md and generated/BUILD-BENCHMARKS.md
• Benchmarks reveal significant performance regression: native build speed degraded from 2.1 ms/file to 6.7 ms/file (253% increase), likely due to new complexity analysis features in feat: multi-language complexity analysis #147
• File count increased from 109 to 122 files (+13 files)
• Found data inconsistencies: raw totals show unified query times (3ms for both engines) but version table and JSON correctly differentiate between native (2.5ms) and WASM (3.4ms)

Confidence Score: 4/5

• Safe to merge after fixing query time inconsistencies
• Documentation-only PR from automated workflow with no code changes. Minor data inconsistencies in query time reporting should be fixed, but don't affect functionality. The performance regression revealed by these benchmarks was introduced in previous PRs, not this one.
• Fix the query time values in generated/BUILD-BENCHMARKS.md raw totals sections to match the version table and JSON data

Important Files Changed

Filename	Overview
README.md	Updated performance table with v2.4.0 benchmarks showing increased build times and new query metrics
generated/BUILD-BENCHMARKS.md	Comprehensive benchmark report updated with v2.4.0 data; contains minor inconsistencies in query time reporting

_{Last reviewed commit: e6246f4}

[greptile-apps]

_{2 files reviewed, 2 comments}

_{Edit Code Review Agent Settings | Greptile}

[greptile-apps]

Raw totals show both engines with 3ms query time, but the version table (line 8-9) and JSON data show native: 2.5ms and wasm: 3.4ms. These values should match.

Suggested change

	| Build time | 813ms |
	| Query time | 3ms |
	| Nodes | 769 |
	| Edges | 1,326 |
	| DB size | 656 KB |
	| Files | 122 |
	| Build time | 813ms |
	| Query time | 2.5ms |
	| Nodes | 769 |
	| Edges | 1,326 |
	| DB size | 656 KB |
	| Files | 122 |

[greptile-apps]

WASM query time should be 3.4ms to match the version table (line 9) and JSON data, not 3ms.

Suggested change

	| Build time | 1.2s |
	| Query time | 3ms |
	| Nodes | 769 |
	| Edges | 1,326 |
	| DB size | 656 KB |
	| Files | 122 |
	| Build time | 1.2s |
	| Query time | 3.4ms |
	| Nodes | 769 |
	| Edges | 1,326 |
	| DB size | 656 KB |
	| Files | 122 |