refactored: to utilise the google adk and production grade agent

docs/validation-evidence.md

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+# Terraform validation evidence
+
+## Scope and safety controls
+
+This validation record is for pre-deployment checks only. No `terraform apply`, resource creation, or cloud provisioning is permitted. The intended configuration must retain:
+
+```hcl
+deploy_resources = false
+deploy_enabled   = false
+```
+
+## Required checks
+
+The requested checks are:
+
+```sh
+terraform fmt -check -recursive
+terraform init -backend=false
+terraform validate
+terraform plan -refresh=false -lock=false -input=false -out=tfplan
+```
+
+## Execution result
+
+**BLOCKED — execution evidence is unavailable in this revision.** The execution environment used to prepare this correction did not provide a repository filesystem, Terraform binary, or command-execution tool. Consequently, these commands were not run here; no exit statuses or command outputs can honestly be reported, and validation is not claimed as successful.
+
+| Check | Command | Exit status | Output |
+|---|---|---:|---|
+| Formatting | `terraform fmt -check -recursive` | Not executed | Blocked: no command execution capability |
+| Backendless initialization | `terraform init -backend=false` | Not executed | Blocked: no command execution capability |
+| Configuration validation | `terraform validate` | Not executed | Blocked: backendless init could not be performed |
+| No-apply plan-oriented check | `terraform plan -refresh=false -lock=false -input=false -out=tfplan` | Not executed | Blocked: no command execution capability; no resources provisioned |
+
+A real validation run must execute the commands from the repository root, capture stdout/stderr and each process exit status, and confirm that the plan is not applied. Until that run is available, `terraform_format_valid`, `terraform_validation_valid`, and `dry_run_valid` must remain false/unknown rather than being inferred from scripts or this record.