Constrained Query Rewriting Logic

Implement query rewriting for RAG within these strict constraints.

CONSTRAINTS:
- Maximum rewritten queries: {{max_queries}}
- Token budget per query: {{token_limit}}
- Latency overhead: <{{latency_budget_ms}}ms
- Must preserve original intent

Original Query:
{{user_query}}

Query Context:
{{context_metadata}}

OUTPUT FORMAT:
```json
{
  "original": "<query>",
  "rewrites": [
    {
      "query": "<rewritten>",
      "strategy": "expansion|decomposition|synonym|specificity",
      "token_count": <number>,
      "expected_improvement": "<reason>"
    }
  ],
  "total_tokens": <number>,
  "constraint_compliance": true
}
```