# Sprint 60 Plan: Language Graduation and Full-Matrix Release

## Context

Sprint 60 is the graduation sprint: finalize support tiers across all onboarded
families, publish compatibility matrix, and ship full-matrix release criteria.

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## Goals

1. Run matrix-wide acceptance across all language families
2. Promote qualified pairs to Stable tier
3. Publish official support matrix and known limitations
4. Lock release process for future language additions

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## Steps

### Step 829: Full pair-matrix orchestration runner (12 tests)
### Step 830: Tier promotion engine (beta->stable) (10 tests)
### Step 831: Pair-specific known-limitations generator (10 tests)
### Step 832: Release readiness scoreboard (10 tests)
### Step 833: Stable corpus certification suite (10 tests)
### Step 834: Regression watchlist for promoted pairs (10 tests)
### Step 835: `whetstone_get_transpile_support_matrix` MCP tool (8 tests)
### Step 836: Documentation pack for language support + migration playbooks (8 tests)
### Step 837: Sprint 60 integration summary + release marker (8 tests)
### Step 838: Full historical regression + post-release checklist (8 tests)

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## Release Output

- Official matrix by source->target pair with tier and caveats
- Migration playbooks per paradigm
- Default policy recommendations by risk profile