[Bug] Implement pre-flight validation for Project ID length

[aghassemlouei]

Bug Description

Project creations fail mid-deployment with an Error 400 if the user supplies a Project ID longer than 30 characters.

Environment and Deployment Context

Please provide details about your deployment to help us reproduce the issue.

• Stellar Engine Version/Commit: main
• Deployment Type:
  • US Region Restricted (e.g., Access Policy constraint)
  • FedRAMP Medium
  • FedRAMP High
  • DoD IL4
  • DoD IL5
  • All / General
• FAST Stage (if applicable):
  • Stage 0 (Bootstrap)
  • Stage 1 (Resource Management)
  • Stage 2 (Network Creation)
  • Stage 3 (Security and Audit)
• Affected Component: fast/assets/schemas/project.schema.yaml
• Terraform Version: 1.5.7
• GCP Provider Version: 5.10.0

Steps to Reproduce

Steps to reproduce the behavior:

1. Provide a Project ID exceeding 30 characters in the terraform.tfvars file.
2. Run terraform apply.
3. See error googleapi: Error 400: field [project_id] has issue.

Expected Behavior

The Terraform plan should fail cleanly before any API calls are made, warning the user about the length constraint.

Actual Behavior

The Terraform apply executes and fails midway through the deployment, potentially leaving the state file dirty.

Relevant Logs and Errors

Error: error creating project proj-bu2-p-sample-floating-5x0i
googleapi: Error 400: field [project_id] has issue [project_id must be at most 30 characters long]

Additional Context

Adding a native Terraform validation block (condition = length(var.project_id) <= 30) to the project variables will resolve this. This was explicitly requested in the legacy Feature Braindump from 2023.

[Calvin-Cheng1]

@aghassemlouei can you provide more context to this issue? All the projects in stages (0-3) have a dynamic project id composed of prefix + static fixed name. We constrain the prefix to less than 7 characters so that when these projects are created, we do not run into project ids > 30.