Implement pod topology spread constraints

[BigBen-7]

Description

Spread pods across zones and nodes for resilience.

Requirements

• Zone spread for backend
• Node spread for critical services
• Max skew configuration
• Scheduling constraints
• Validation tests

Files to Touch

• infrastructure/k8s/topology-spread/backend.yaml
• infrastructure/k8s/topology-spread/database.yaml
• infrastructure/docs/topology-guide.md

Complexity: 250 points

[eulami]

@eulami has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi. I would love to work on this issue because I'm highly experienced, I have reviewed the issue and I will submit a PR is less than 24 hours.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @eulami to this issue.

[NteinPrecious]

@NteinPrecious has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

can I take be assigned tho this?. I've gone through the details and will provide a well-tested solution aligned with the project standards.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @NteinPrecious to this issue.

[drips-wave]

Congratulations, @NteinPrecious! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @NteinPrecious: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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[grantfox-oss]

🦊 GrantFox — @NteinPrecious 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 #547)
2. Your PR will be reviewed by the PinSpace-Org maintainers

Good luck! Track your progress on GrantFox.