[Bot] Add typed callback and interaction state machines for Telegram workflows

[Solomonsolomonsolomon]

Replace ad hoc Telegram callback/query handling with typed state machines that can model multi-step interactive workflows safely and predictably.

[xtep103]

@xtep103 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hey Maintainer, I have gone through the details of the issue and i am capable of resolving it, I would love to be assigned to work on it ASAP. Thanks in advance

ℹ️ Repo Maintainers: To accept this application, review their application or assign @xtep103 to this issue.

[ohotuowo-morgan]

@ohotuowo-morgan has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Dear Mantainer, I would like to resolve this issue. Please assign it to me

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

[drips-wave]

Congratulations, @ohotuowo-morgan! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @ohotuowo-morgan: 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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