Implement subscription dunning with progressive escalation

[Smartdevs17]

Context

Dunning needs progressive escalation.

Current Limitation

Dunning is basic with no escalation.

Expected Outcome

• Progressive dunning escalation
• Escalation rules
• Dunning analytics
• Dunning optimization

Acceptance Criteria

• Progressive dunning escalation
• Configurable escalation rules
• Dunning analytics
• Dunning optimization
• Dunning templates
• Dunning API
• Dunning documentation

[ZuLu0890]

@ZuLu0890 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would love to work on this issue and give it a high quality PR

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[dhareymu]

@dhareymu has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Maintainer, abeg gimme this project 🙏🙏😭😭

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[OmniZlatoon]

@OmniZlatoon has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Maintainer sir, please I can handle this issue on time . Please assign.

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[champ204]

@champ204 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this issue

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[Danielobito009]

@Danielobito009 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would love to work on this issue

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[susanyusuf]

@susanyusuf has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi maintainer i will love to work on this project please.

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[drips-wave]

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

🧑‍💻 @susanyusuf: 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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