# Development History

This directory archives point-in-time development logs and decision memos from the July 2026 fix and consolidation batches. They are retained for historical reference — each one is a snapshot of the reasoning, before/after verification, and test results for a specific past change, not a living document that gets updated as the code evolves. For current behavior, see the code and `CHANGELOG.md`; use these logs only to understand why a change was made.

- `CODIFY_FIX_LOG.md` — Codify (Terraform generation pipeline) fixes: HCL rendering, `${...}` reference handling, and schema/policy mapping correctness
- `COMPLIANCE_COST_FIX_LOG.md` — Compliance evidence rendering and cost estimation correctness fixes
- `COST_PRICING_CONSOLIDATION_LOG.md` — Execution log for consolidating the duplicate cost pricing tables onto `pricing.py` as the single source of truth (Plan A)
- `COST_PRICING_CONSOLIDATION_MEMO.md` — Pre-execution decision memo on the duplicate cost pricing tables
- `DEAD_CODE_CLEANUP_LOG.md` — Removal of two dead-code sites flagged (and deferred) during the drift/blast radius consolidation
- `DRIFT_BLAST_CONSOLIDATION_LOG.md` — Execution log for consolidating the drift engines (track D1) and converging blast radius weighting (track B1)
- `DRIFT_BLAST_CONSOLIDATION_MEMO.md` — Pre-execution decision memo on the three drift engines and blast radius weighting
- `DR_AGGREGATION_SNAPSHOT_FIX_LOG.md` — DR readiness assessment, graph aggregation, and snapshot diff correctness fixes
- `GRAPH_ENGINE_FIX_LOG.md` — Core graph engine correctness and concurrency fixes
- `INTEGRATION_VERIFICATION_LOG.md` — Integration verification of the merged codify and graph engine fix tracks (D+E)
- `PERF_COVERAGE_FIX_LOG.md` — Performance fixes and test coverage backfill for IAM generation, centrality, selection, and cross-region views
- `SECURITY_FIX_LOG.md` — Two independent security-related defect fixes
