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

[Copilot]

• Refactor targeted pkg/cli functions into helper-based coordinators so each target is at or under 60 lines
• Verify go build ./pkg/cli/... passes
• Verify make fmt passes
• Recount all requested target functions and confirm line counts are within limit
• Check make golint-custom filtered to the requested pkg/cli areas; no requested target functions remain over the limit
• make agent-report-progress still reports unrelated pre-existing repo lint warnings outside this refactor scope

• Fixes [lint-monster] function-length refactoring backlog snapshot (683 findings) #49700