bill/whetstone_DSL

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Bill 72ffee68fa WIP: stage all uncommitted work — sprints 46-221, graduation headers, specialist fleet, test steps 909-1988

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-04-22 10:15:48 -06:00

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Sprint 106 Plan: Contract-Centric API and ABI Preservation Suite

Context

As migrations scale, explicit API/ABI preservation tooling needs deeper automation. Sprint 106 expands contract-centric compatibility enforcement.

Goals

Deepen API/ABI contract extraction and diffing
Add backward-compatibility policies by service class
Integrate ABI checks into stable promotion workflows
Reduce late-stage breakages from interface drift

Steps

Step 1289: Unified API/ABI contract schema (12 tests)

Step 1290: Binary/interface diff engine integration (10 tests)

Step 1291: Compatibility policy profiles by interface criticality (10 tests)

Step 1292: Contract breach severity classifier (10 tests)

Step 1293: Auto-generated mitigation suggestions for breaches (10 tests)

Step 1294: ABI gate bindings to tier promotions (8 tests)

Step 1295: `whetstone_extract_api_abi_contract` MCP tool (8 tests)

Step 1296: `whetstone_verify_api_abi_compat` MCP tool (8 tests)

Step 1297: API/ABI preservation report artifact (8 tests)

Step 1298: Sprint 106 integration summary + regression (8 tests)

Compatibility Rule

Critical ABI breakage is blocking unless approved by explicit waiver policy.