[Parent] Ralph Loop workflow planning

[github-actions]

Parent issue to track the Ralph Loop planning work items created on 2026-01-22.

Related issues:

• [plan] Research and document Ralph Loop pattern for agentic workflows #11133 Research and document Ralph Loop pattern for agentic workflows
• [plan] Create basic Ralph Loop workflow example #11134 Create basic Ralph Loop workflow example
• [plan] Create comprehensive Ralph Loop documentation and examples #11135 Create comprehensive Ralph Loop documentation and examples
• [plan] Add PRD generation workflow for Ralph Loop #11136 Add PRD generation workflow for Ralph Loop
• [plan] Implement learnings persistence in Ralph Loop workflow #11137 Implement learnings persistence in Ralph Loop workflow

These issues share the same Ralph Loop planning theme and should be tracked together.

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