rssguard: Update to version 5.2.1, switch to webviewer variant

[arvdk]

Closes #18210

https://rssguard.readthedocs.io/en/latest/features/article-display.html

Note that rssguard has been updated from 5.0.4 -> 5.2.1. Since version 5.1.0, functionality has been split in two:

Downloads are now split into TextBrowserViewer and WebEngineViewer variants

I only fixed the manifest, and don't know which of those should be in this manifest. I went with web for now, but asking the issuer if my guess is right. The alternative has an url ending with rssguard-$version-text-qt6-win10.7z.

• Use conventional PR title: <manifest-name[@version]|chore>: <general summary of the pull request>
• I have read the Contributing Guide

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 78da8a7 and af399bb.

📒 Files selected for processing (1)

• bucket/rssguard.json

🚧 Files skipped from review as they are similar to previous changes (1)

• bucket/rssguard.json

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📝 Walkthrough

Walkthrough

The PR updates rssguard.json to version 5.2.1, replaces the 64-bit download URL and SHA-256 hash, and adjusts the checkver and autoupdate matching rules to target the new RSS Guard asset naming.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Sequence Diagram(s)

See hidden artifact.

Related issues: Fixes #18210.

Suggested labels: manifest-update

Suggested reviewers: none

Poem:
Five-two-one now takes the stage,
New asset name, same manifest page.
Hash and URL point to the release,
Update checks now match with ease.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the manifest version bump and variant switch.
Description check	✅ Passed	The description includes the linked issue, change summary, and required checklist items.
Linked Issues check	✅ Passed	The manifest is updated to RSS Guard 5.2.1 as requested by issue #18210.
Out of Scope Changes check	✅ Passed	The changes stay focused on the rssguard manifest update and variant selection.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@bucket/rssguard.json`:
- Around line 23-27: The asset selector in checkver is using a JSONPath regex
filter that checkver.ps1 cannot evaluate, so the version lookup will fail.
Update the checkver configuration in rssguard.json by making checkver.jsonpath
use a plain asset-name path without the =~ filter, and keep the version
parsing/matching logic in checkver.regex. Use the existing github, jsonpath, and
regex entries to locate the checkver block.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

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Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between 5fbb4f1 and 4abf1da.

📒 Files selected for processing (1)

• bucket/rssguard.json

[z-Fng]

/verify

[github-actions]

All changes look good.

Wait for review from human collaborators.

rssguard

• Lint
• Description
• License
• Hashes
• Checkver
• Autoupdate

Check the full log for details.

[z-Fng]

/verify

[github-actions]

All changes look good.

Wait for review from human collaborators.

rssguard

• Lint
• Description
• License
• Hashes
• Checkver
• Autoupdate

Check the full log for details.

[z-Fng]

Thank you for your contribution!