- Add 3-layer protection pipeline for model-generated Terraform code:
1. Frontend auto-split: splits monolithic HCL into multiple files by resource type
2. Backend auto-split: Python port as last defense before writing to disk
3. Backend deduplication: removes monolithic leftovers with duplicate resources
- Fix single-line block expansion to handle ALL HCL blocks (nested included):
ingress_security_rules, egress_security_rules, route_rules, match_criteria, etc.
- Add prompt size logging for terraform agent diagnostics
- Strengthen system prompt: minimum 3 files, final reminder section
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