refactor: config early cli migration

[gvozdvmozgu]

Summary

Stacked PR 2/10: based on config-early-engine-foundation; review and merge after that PR.

• Unify CLI lint and fix command execution through the shared runner.
• Move reporting responsibilities out of sqruff-lib.
• Fix follow-up fallout from the reporting split.

Testing

• Validated with the full stacked branch:
• cargo +1.96.1 fmt --check
• cargo +1.96.1 check -p sqruff-lib -p sqruff-cli-lib -p sqruff-lsp
• cargo +1.96.1 test -p sqruff --test none_format

[github-actions]

Benchmark for a7b2261

Click to view benchmark

Test	Base	PR	%
DepthMap::from_parent	59.9±0.64µs	60.0±8.30µs	+0.17%
fix_complex_query	12.1±0.15ms	12.2±0.04ms	+0.83%
fix_superlong	125.3±5.42ms	123.9±3.01ms	-1.12%
parse_complex_query	4.1±0.09µs	4.2±0.22µs	+2.44%
parse_expression_recursion	6.7±0.10µs	6.9±0.08µs	+2.99%
parse_simple_query	1077.4±77.96ns	1046.6±21.15ns	-2.86%

[github-actions]

Benchmark for d0e61a6

Click to view benchmark

Test	Base	PR	%
DepthMap::from_parent	59.1±1.19µs	59.6±1.23µs	+0.85%
fix_complex_query	12.3±0.06ms	12.1±0.16ms	-1.63%
fix_superlong	134.0±8.68ms	132.8±8.56ms	-0.90%
parse_complex_query	4.1±0.26µs	4.1±0.06µs	0.00%
parse_expression_recursion	7.2±0.09µs	6.9±0.09µs	-4.17%
parse_simple_query	1050.3±34.36ns	1045.3±23.17ns	-0.48%