[WIP] Refactor long functions in pkg/workflow and pkg/cli

[Copilot]

• Slice 1: pkg/workflow/maintenance_workflow_yaml.go - extracted helpers from buildMaintenanceWorkflowYAML
• Slice 2: pkg/workflow/frontmatter_on_section_cleanup.go - extracted helpers from commentOutProcessedFieldsInOnSection
• Slice 3: pkg/workflow/side_repo_maintenance.go - extracted helpers from generateSideRepoMaintenanceWorkflow
• Slice 4: pkg/workflow/mcp_config_custom.go - extracted helpers from renderSharedMCPConfig and getMCPConfig
• Slice 5: pkg/workflow/repo_memory.go - extracted helpers from extractRepoMemoryConfig and buildPushRepoMemoryJob
• Slice 6: pkg/workflow/engine.go - extracted helpers from ExtractEngineConfig and applyEngineAuthEnv
• Slice 7: pkg/cli/run_workflow_execution.go - extracted helpers from RunWorkflowOnGitHub and RunWorkflowsOnGitHub
• Slice 8: pkg/cli/logs_command.go - extracted helpers from NewLogsCommand and large func literal
• Additional files: ~416 files modified across pkg/cli and pkg/workflow with helper extractions
• Build passes (make build succeeds)
• Formatting applied (make fmt succeeds)
• Final make golint-custom validation (agents still running)

• Fixes [lint-monster] [Code Quality] Shared function-length refactoring backlog for pkg/workflow and pkg/cli (677 findings) #46514

[github-actions]

🤖 PR Triage

Field	Value
Category	refactor
Risk	🟡 medium
Score	18/100 (impact:5 urgency:8 quality:5)
Action	defer

[WIP] Draft with 0 code changes. Created today — wait for author to mark ready.

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