Implement Release Shield Checks

[Mosas2000]

Description

Add a pre-release checklist that prevents unstable builds from being promoted.

Requirements and context

• Health gates
• Test gates
• Artifact checks
• Manual override
• Clear reporting

Suggested execution

Fork the repo and create a branch

git checkout -b feature/infra-release-shield

Implement changes

• Create release shield checks
• Wire into release workflows
• Block promotion on failures
• Document shield behavior

Example commit message

ci: implement release shield checks

Guidelines

• Assignment required before starting
• PR must include a closing reference to this issue
• Timeframe: 72 hours

[Davidemulo]

i will love to work on this issue

[grantfox-oss]

🦊 GrantFox — @Davidemulo has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #560)
2. Your PR will be reviewed by the StellaBridge maintainers

Good luck! Track your progress on GrantFox.