docs: add PRD review report (2026-08-04) - #18

Orphan .md files: ['QUALITY_PLAN.md', 'anti-patterns/generic-acid-properties.md', 'anti-patterns/generic-ai-complexity.md', 'anti-patterns/generic-ai-generated-content.md', 'anti-patterns/generic-alternative-classes.md', 'anti-patterns/generic-analysis-paralysis.md', 'anti-patterns/generic-api-change.md', 'anti-patterns/generic-api-key-leak.md', 'anti-patterns/generic-auth-bypass.md', 'anti-patterns/generic-availability-change.md', 'anti-patterns/generic-batch-processing.md', 'anti-patterns/generic-behavior-change.md', 'anti-patterns/generic-big-data-complexity.md', 'anti-patterns/generic-bike-shedding.md', 'anti-patterns/generic-blockchain-complexity.md', 'anti-patterns/generic-breaking-change-actions-checkout.md', 'anti-patterns/generic-breaking-change-electron.md', 'anti-patterns/generic-breaking-change-facebook-react.md', 'anti-patterns/generic-breaking-change-flask.md', 'anti-patterns/generic-breaking-change-grafana.md', 'anti-patterns/generic-breaking-change-kubernetes.md', 'anti-patterns/generic-breaking-change-langchain.md', 'anti-patterns/generic-breaking-change-no-compat.md', 'anti-patterns/generic-breaking-change-numpy.md', 'anti-patterns/generic-breaking-change-pandas.md', 'anti-patterns/generic-breaking-change-pytorch.md', 'anti-patterns/generic-breaking-change-rust.md', 'anti-patterns/generic-breaking-change-scikit-learn.md', 'anti-patterns/generic-breaking-change-tailwindcss.md', 'anti-patterns/generic-breaking-change-tensorflow.md', 'anti-patterns/generic-breaking-change-terraform.md', 'anti-patterns/generic-breaking-change-typescript.md', 'anti-patterns/generic-breaking-change-vercel-nextjs.md', 'anti-patterns/generic-cap-theorem.md', 'anti-patterns/generic-ci-failure.md', 'anti-patterns/generic-circular-dependency.md', 'anti-patterns/generic-clickjacking.md', 'anti-patterns/generic-cloud-complexity.md', 'anti-patterns/generic-code-duplication.md', 'anti-patterns/generic-command-injection.md', 'anti-patterns/generic-comments.md', 'anti-patterns/generic-complex-code.md', 'anti-patterns/generic-config-change.md', 'anti-patterns/generic-consistency-change.md', 'anti-patterns/generic-container-complexity.md', 'anti-patterns/generic-cookie-theft.md', 'anti-patterns/generic-cosmetic-no-user-pain.md', 'anti-patterns/generic-csrf.md', 'anti-patterns/generic-data-access.md', 'anti-patterns/generic-data-aggregation.md', 'anti-patterns/generic-data-archival.md', 'anti-patterns/generic-data-backup.md', 'anti-patterns/generic-data-caching.md', 'anti-patterns/generic-data-catalog.md', 'anti-patterns/generic-data-clump.md', 'anti-patterns/generic-data-compliance.md', 'anti-patterns/generic-data-constraints.md', 'anti-patterns/generic-data-corruption.md', 'anti-patterns/generic-data-defaults.md', 'anti-patterns/generic-data-deserialization.md', 'anti-patterns/generic-data-discovery.md', 'anti-patterns/generic-data-duplication.md', 'anti-patterns/generic-data-encoding.md', 'anti-patterns/generic-data-enrichment.md', 'anti-patterns/generic-data-exposure.md', 'anti-patterns/generic-data-filtering.md', 'anti-patterns/generic-data-formats.md', 'anti-patterns/generic-data-governance.md', 'anti-patterns/generic-data-inconsistency.md', 'anti-patterns/generic-data-indexing.md', 'anti-patterns/generic-data-integrity.md', 'anti-patterns/generic-data-lake.md', 'anti-patterns/generic-data-lineage.md', 'anti-patterns/generic-data-loss.md', 'anti-patterns/generic-data-mesh.md', 'anti-patterns/generic-data-migration.md', 'anti-patterns/generic-data-nullable.md', 'anti-patterns/generic-data-orphaning.md', 'anti-patterns/generic-data-pagination.md', 'anti-patterns/generic-data-parsing.md', 'anti-patterns/generic-data-partitioning.md', 'anti-patterns/generic-data-pipeline.md', 'anti-patterns/generic-data-privacy.md', 'anti-patterns/generic-data-quality.md', 'anti-patterns/generic-data-recovery.md', 'anti-patterns/generic-data-replication.md', 'anti-patterns/generic-data-retention.md', 'anti-patterns/generic-data-sanitization.md', 'anti-patterns/generic-data-science-complexity.md', 'anti-patterns/generic-data-security.md', 'anti-patterns/g