# Sprint 61 Plan: Continuous Matrix Certification Pipeline

## Context

After full-matrix release, quality must be continuously re-proven as adapters,
runtimes, and policies evolve. Sprint 61 operationalizes continuous certification.

---

## Goals

1. Run scheduled certification jobs across supported language pairs
2. Detect certification regressions early with pair-level blast radius reports
3. Version and archive certification evidence bundles
4. Block unstable pair promotions automatically

---

## Steps

### Step 839: Certification job scheduler (12 tests)
### Step 840: Pair selection strategy engine (hot pairs, random sampling, full sweeps) (10 tests)
### Step 841: Certification evidence archive format v2 (10 tests)
### Step 842: Pair regression detector with severity levels (10 tests)
### Step 843: Blast-radius analyzer by feature family (10 tests)
### Step 844: Auto-block rule integration with support tiers (8 tests)
### Step 845: `whetstone_run_certification_cycle` MCP tool (8 tests)
### Step 846: `whetstone_get_certification_status` MCP tool (8 tests)
### Step 847: Certification dashboard data model (8 tests)
### Step 848: Sprint 61 integration summary + regression (8 tests)

---

## Operational Rule

- Stable-tier pairs must pass certification in the most recent cycle.