fix: preserve indentation after comment lines

[benfdking]

Summary

• reset indentation and untaken indents for comment-only lines
• test comment at start of parenthesized block keeps correct indent

Testing

• cargo test -p sqruff-lib --test rules -- LT02-indent.yml

---

https://chatgpt.com/codex/tasks/task_e_68c6d7e1944c833092f5e0695ec9f581

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Bug: Comment Line Bug Causes Indentation Issues

The new logic incorrectly modifies the line immediately following a comment-only line. This can break indentation for subsequent comment lines or normal code, and only updates the first indent point, leading to inconsistent line state. Additionally, comment_line_idx + 1 has a potential integer overflow.

 

[github-actions]

Benchmark for b928ecc

Click to view benchmark

Test	Base	PR	%
DepthMap::from_parent	51.6±0.71µs	50.2±0.56µs	-2.71%
fix_complex_query	11.9±0.22ms	11.9±0.06ms	0.00%
fix_superlong	163.7±16.45ms	168.4±19.13ms	+2.87%
parse_complex_query	4.1±0.06µs	4.2±0.06µs	+2.44%
parse_expression_recursion	7.1±0.09µs	7.2±0.11µs	+1.41%
parse_simple_query	1048.6±14.05ns	1069.3±20.48ns	+1.97%

[openhands-ai]

Looks like there are a few issues preventing this PR from being merged!

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If you'd like me to help, just leave a comment, like

@OpenHands please fix the failing actions on PR #1969 at branch `codex/fix-formatting-issue-with-sql-comments`

Feel free to include any additional details that might help me get this PR into a better state.

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