# Sprint 62 Plan: Adapter Quality Telemetry and Failure Taxonomy

## Context

To improve adapters systematically, failures must be categorized, measured, and
trended. Sprint 62 introduces a unified transpilation failure taxonomy.

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## Goals

1. Define canonical failure taxonomy for lowering/raising/equivalence/gates
2. Attach taxonomy tags to all failure packets
3. Add trend analysis for repeated failure modes
4. Prioritize fixes by impact and frequency

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## Steps

### Step 849: Transpilation failure taxonomy schema (12 tests)
### Step 850: Packet tagging integration across pipelines (10 tests)
### Step 851: Failure aggregation indexer (10 tests)
### Step 852: Trend and recurrence detector (10 tests)
### Step 853: Prioritization scoring model (impact x frequency x tier) (10 tests)
### Step 854: Recommended remediation generator (8 tests)
### Step 855: `whetstone_get_failure_trends` MCP tool (8 tests)
### Step 856: `whetstone_get_top_adapter_gaps` MCP tool (8 tests)
### Step 857: Weekly quality report artifact generator (8 tests)
### Step 858: Sprint 62 integration summary + regression (8 tests)

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## Data Rule

- Every failed gate/equivalence check must emit one primary taxonomy code.