feat(app): changelog with PR links

[alexyaroshuk]

Issue for this PR

Closes #13025 (for desktop app)

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Adds a Changelog feature that displays release notes in Settings. Users can view past releases with release notes, timestamps, and links to PRs.

• New dialog in Settings showing "Changelog" link
• Fetches releases from GitHub API with localStorage caching
• Renders release notes with markdown
• Displays latest tag with a "Latest" badge

How did you verify your code works?

manual test

Screenshots / recordings

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found related PRs that address changelog and release notes functionality:

Related PRs:

1. feat(changelog): include PR links in summary bullets too #13165 - feat(changelog): include PR links in summary bullets too

   • feat(changelog): include PR links in summary bullets too #13165
   • Directly related to changelog with PR links functionality

2. feat(tui): Add clickable version number to see release notes + register /changelog slash command. #11542 - feat(tui): Add clickable version number to see release notes + register /changelog slash command

   • feat(tui): Add clickable version number to see release notes + register /changelog slash command. #11542
   • Related feature for displaying release notes (TUI version)

3. fix(changelog): prevent AI error messages in release notes #11457 - fix(changelog): prevent AI error messages in release notes

   • fix(changelog): prevent AI error messages in release notes #11457
   • Related to changelog/release notes functionality

These PRs appear to be addressing similar changelog and release notes features. PR #13165 is particularly relevant as it's directly focused on PR links in changelog, which is a core aspect of the current PR. You may want to check if these PRs are still open and if there's overlap in implementation.

[alexyaroshuk]

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found related PRs that address changelog and release notes functionality:

Related PRs:

1. feat(changelog): include PR links in summary bullets too #13165 - feat(changelog): include PR links in summary bullets too

   • feat(changelog): include PR links in summary bullets too #13165
   • Directly related to changelog with PR links functionality

2. feat(tui): Add clickable version number to see release notes + register /changelog slash command. #11542 - feat(tui): Add clickable version number to see release notes + register /changelog slash command

   • feat(tui): Add clickable version number to see release notes + register /changelog slash command. #11542
   • Related feature for displaying release notes (TUI version)

3. fix(changelog): prevent AI error messages in release notes #11457 - fix(changelog): prevent AI error messages in release notes

   • fix(changelog): prevent AI error messages in release notes #11457
   • Related to changelog/release notes functionality

These PRs appear to be addressing similar changelog and release notes features. PR #13165 is particularly relevant as it's directly focused on PR links in changelog, which is a core aspect of the current PR. You may want to check if these PRs are still open and if there's overlap in implementation.

1. I tested this PR and it outputs no links, just a PR number. I left the comment so that the author addresses this. However, this is a more correct way to do this (use the script instead of github api). If it gets merged, can be reused in a better implementation on top of the current PR
2. tui-specific, not related
3. unrelated