[BLCCoreStudio]

Summary

Upgrades cloud/terraform from a compact schema-v1 overview into a schema-v3 deep technical reference centered on Terraform's actual execution model: configuration evaluation, provider plugins, dependency graph construction, state identity, planning, apply, lifecycle, refactoring, imports, and recovery.

Changes

• explain Terraform Core versus provider-plugin responsibilities and the gRPC plugin boundary
• document resource addresses, unknown values, graph construction, implicit/explicit dependencies, count, for_each, and parallel graph walking
• deepen state semantics, remote backends, locking, lineage/serial safeguards, failed state persistence, drift, and recovery
• distinguish speculative plans from saved plans and explain review-to-apply freshness and one-writer invariants
• cover lifecycle controls, replacement, modules, module versioning, moved, removed, and configuration-driven import
• add provider version pinning, .terraform.lock.hcl, registry/signature supply-chain boundaries, provider aliases, and environment identity checks
• document sensitive versus ephemeral/write-only value semantics and current version boundaries
• add Terraform native testing, CI/CD design, pull-request credential isolation, performance/state partitioning, common failure modes, debugging, destructive-plan review, and disaster recovery
• verify the current upstream BUSL-1.1 license and document OpenTofu as a meaningful alternative
• add Technology Universe coverage metadata and typed relationships to OpenTofu, Kubernetes, and Ansible

Quality bar

The module treats Terraform as a stateful reconciliation and change-planning engine rather than a script runner. The organizing model is resource identity + graph + provider behavior + state + plan/apply, with explicit operational and security boundaries.