Lint

Ignore .claude/scheduled_tasks.lock (#3127) #7733

Job	Run time
build (3.13, ubuntu-latest, pre-commit)	57s
build (3.13, ubuntu-latest, manual)	57s
build (3.13, windows-latest, manual)	1m 46s
build (3.13, windows-latest, pre-push)	4m 40s
build (3.13, ubuntu-latest, pre-push)	3m 16s
build (3.13, windows-latest, pre-commit)	2m 32s
completion-lint	3s
	14m 11s

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