[FEATURE] Prompt repetition primitives for AI Services and RAG #570
Description
Goal
Add optional prompt repetition for:
- AI Services user input (non-RAG)
- RAG retrieval query text
Why
Paper: https://arxiv.org/abs/2512.14982
Main signal: gains are mostly in non-reasoning setups.
Requirements
- Optional feature, no default behavior change
- Idempotent (no repeated amplification)
- Input guardrail skips RAG-augmented input by default
- RAG support via QueryTransformer
- Keep implementation in community-core
Delivery
- PR1: base components
- PR2: AUTO gates
- PR3: usage guide