[Existing app][Changelog Panel] Add regression coverage for current behavior

[kryputh]

Summary

Improve the existing Changelog Panel surface. This issue is intentionally scoped to existing app code and should not introduce a new standalone tool or unrelated feature.

Current area

changelog entries, panel visibility, read state, release grouping, and user-facing change summaries

Relevant paths

• src/features/changelog/ChangelogPanel.tsx
• src/features/changelog/useChangelog.ts
• src/features/changelog/data.ts

Goal

make the existing changelog panel useful for release comprehension and contributor handoff.

Work focus

Add focused regression coverage for the existing behavior so future contributors can change this area with confidence. Prefer unit tests for pure helpers and Playwright coverage only for user-critical flows.

Acceptance criteria

• Tests cover at least one successful path and one edge or failure path.
• Fixtures remain fake, deterministic, and safe for public repository review.
• Tests assert user-visible outcomes or stable helper contracts, not implementation details.
• The relevant existing test command passes locally or the PR explains any local environment limitation.

Scope guardrails

• Keep the work inside the relevant existing app/module paths above unless a small shared helper is clearly justified.
• Do not add a new V1/V2 tool folder for this issue.
• Do not use real user data, secrets, private keys, or live customer mail.
• Keep copy and UI aligned with the Stealth Mail safety, speed, and sender-control positioning.

Suggested validation

• Run the most relevant unit or e2e tests for the touched area.
• Run �un x tsc --noEmit and �un run lint when the local environment supports the project dependency install.

[gloskull]

Hello, I have 4 years of experience delivering solutions for projects like this, covering backend, frontend, and smart contract development. After carefully reviewing your requirements, I have a clear understanding of the task and am confident in my ability to deliver a clean, efficient, and thoroughly tested solution on time. I prioritize code quality, maintainability, and industry best practices throughout the development process.

[MoscowDev]

I'd like to take this issue.

I'll focus on adding regression coverage around the changelog logic and panel behavior to ensure future refactors do not break release grouping or user-visible state transitions.

My approach will include:

• Unit tests for useChangelog covering grouping logic, empty data, and malformed entries.
• UI-level tests for ChangelogPanel verifying visibility and rendering of grouped releases.
• Deterministic fixtures to ensure repeatable test runs.
• Assertions focused on user-visible behavior rather than internal implementation details.
• A single end-to-end or integration test covering the primary user flow of opening and viewing the changelog panel.

The goal is to increase confidence in refactoring this area without introducing brittle or implementation-specific tests.

[MoscowDev]

I'd like to take this issue.

I'll focus on adding regression coverage around the changelog logic and panel behavior to ensure future refactors do not break release grouping or user-visible state transitions.

My approach will include:

• Unit tests for useChangelog covering grouping logic, empty data, and malformed entries.
• UI-level tests for ChangelogPanel verifying visibility and rendering of grouped releases.
• Deterministic fixtures to ensure repeatable test runs.
• Assertions focused on user-visible behavior rather than internal implementation details.
• A single end-to-end or integration test covering the primary user flow of opening and viewing the changelog panel.

The goal is to increase confidence in refactoring this area without introducing brittle or implementation-specific tests.

[Songu3020]

Hello, I’m a full stack developer with hands-on experience building with variety of tools including Nextjs, nodejs, nestjs, React, Typescript and more

I focus on writing clear, maintainable code and making sure features work as expected end to end, not just in isolation. I communicate progress regularly and keep things transparent as I work. I’m confident I can complete this task within an ETA of 4 HOURS

[Ebenezer199914]

can i work on this

[grantfox-oss]

🦊 GrantFox — @MoscowDev 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 #999)
2. Your PR will be reviewed by the Stellar-Mail maintainers

Good luck! Track your progress on GrantFox.