style(pipelines): apply ruff --fix to src/pipelines #12

Job	Run time
Run tests matrix (3.11)	34m 14s
Run tests matrix (3.12)	1s
Static analysis & unit tests (one python)	1s
Providers matrix (optional)	-1s
Provider smoke (manual)	-1s
DeepAgent focused tests (fast)	1s
	34m 15s

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