Fuzz: paused-mid-batch scenarios

[nanaf6203-bit]

Problem Statement
There is no fuzz covering: tip → admin pause → resumed tip cycle
→ withdrawn. Pause is correctly checked at function entry but the
interaction with state during multi-batch state is not exercised.

Why it matters
Pausing is the emergency-stop safety net.

Acceptance Criteria

• A property test that randomly interleaves admin pause/unpause with
  user tips and asserts no state corruption.

Files/Modules Likely Affected

• src/fuzz.rs

Difficulty Medium. Estimated Effort M.

Labels
area:testing, area:fuzzing, priority:medium

---

Imported from docs/open-issues-draft.md as draft issue #32 (commit 7becd4b). Original draft-order cross-references in this body have been remapped to current GitHub issue numbers at import time.

[GBOYEE]

Hi team — I'd like to take this on as part of the GrantFox campaign. I'll implement it and open a PR referencing this issue shortly.

[Degentle12]

please can i fix this

[grantfox-oss]

🦊 GrantFox — @Degentle12 has been assigned to this issue as part of the Official Campaign | FWC26 campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #92)
2. Your PR will be reviewed by the StellarTips maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@Degentle12's PR #151 was approved and merged by @nanaf6203-bit.

🏆 @Degentle12: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (118 total points). Track your full progress on GrantFox.

👏 Great work, @Degentle12! Keep contributing to StellarTips.