whetstone_DSL/docs/native_decomposition_impact_list_2026-02-26.md

Native Decomposition Impact List - 2026-02-26

Status: Active Purpose: Enumerate all known areas affected by shallow native decomposition and map each to enforceable tooling.

Impact List (One-by-One)

1. API contract evolution

• Problem: compatibility/versioning work collapses into generic tasks.
• Tooling: impact_api_contract_evolution profile in tools/mcp/profiles/native_decomposition_impact_profiles.json.

2. State migration and rollback safety

• Problem: migration/backfill/rollback choreography omitted.
• Tooling: impact_state_migration_rollback profile.

3. Security policy propagation

• Problem: cross-layer auth/deny-by-default checks missing.
• Tooling: impact_security_policy_propagation profile.

4. SLO/latency budget constraints

• Problem: performance requirements missing from decomposition rationale.
• Tooling: impact_slo_latency_budget profile.

5. Rollout choreography

• Problem: staged rollout/abort hooks not represented as tasks.
• Tooling: impact_rollout_choreography profile.

6. Multi-file transactional edits

• Problem: partial cross-file updates pass as “done”.
• Tooling: impact_multifile_transactional_edit profile.

7. Concurrency/locking semantics

• Problem: race/lock/deadlock work under-scoped.
• Tooling: impact_concurrency_locking profile.

8. Projection/environment constraints

• Problem: embedded/mobile/serverless constraints ignored.
• Tooling: impact_projection_environment_constraints profile.

9. Polyglot boundary changes

• Problem: SDK/client/server coupling not decomposed.
• Tooling: impact_polyglot_boundary_changes profile.

10. Observability/telemetry integrity

• Problem: logging/metrics/tracing semantics omitted.
• Tooling: impact_observability_telemetry_integrity profile.

11. Data integrity and precision

• Problem: financial/scientific precision risks hidden in generic tasks.
• Tooling: impact_data_integrity_precision profile.

12. Recovery/replay-critical flows

• Problem: recovery/rollback/replay pathways not represented.
• Tooling: impact_disaster_recovery_replay profile.

Enforcement Tooling

• Checker:
  • tools/mcp/check_native_decomposition_impact_coverage.py
• Profiles:
  • tools/mcp/profiles/native_decomposition_impact_profiles.json
• Standalone gate wrapper:
  • tools/mcp/run_native_impact_coverage_gate.sh
• Pipeline integration toggles in tools/mcp/run_sprint_taskitem_pipeline.sh:
  • WSTONE_NATIVE_IMPACT_COVERAGE_GATE
  • WSTONE_NATIVE_IMPACT_COVERAGE_ENFORCE
  • WSTONE_NATIVE_IMPACT_COVERAGE_PROFILES