# Feature Flagged Search Rewrite (fs_005)

## Objective
Replace search ranking pipeline behind feature flag with staged rollout, telemetry checks, and automatic abort trigger.

## Language & Library Constraints
- Primary language: rust
- Available libraries: axum, serde, tokio
- Prefer explicit use of selected library APIs in task execution contracts.

## Required Artifacts
- search/core.rs
- search/ranking.rs
- flags/config.rs
- telemetry/search_metrics.rs
- rollback_plan.md

## Acceptance
- Generate deterministic taskitems with strict execution contracts.
- Include selected library and preferred APIs per task where applicable.