feat: add AppStream stock icons for multiflexi and multiflexi-common

[Vitexus]

Summary

• Add debian/cz.vitexsoftware.multiflexi.metainfo.xml with <icon type="stock">multiflexi</icon> for the multiflexi package
• Add debian/multiflexi.install to install multiflexi.svg into usr/share/icons/hicolor/scalable/apps/ and the metainfo into usr/share/metainfo/
• multiflexi-common was already correctly configured; no changes needed there

Test plan

• Build both packages and verify multiflexi.svg lands in /usr/share/icons/hicolor/scalable/apps/multiflexi.svg
• Verify /usr/share/metainfo/cz.vitexsoftware.multiflexi.metainfo.xml is installed in the multiflexi package
• Run appstreamcli validate /usr/share/metainfo/cz.vitexsoftware.multiflexi.metainfo.xml — expect no errors
• Confirm multiflexi-common still installs its icon and metainfo correctly

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Added AppStream metadata to enable proper application discovery in system package managers and application launchers.
  • Configured installation of application icon to system directories for consistent desktop environment integration.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 054bf09d-0750-4385-a4ac-fc5032b1c471

📥 Commits

Reviewing files that changed from the base of the PR and between 4d3d795 and 1ec5e12.

📒 Files selected for processing (2)

• debian/cz.vitexsoftware.multiflexi.metainfo.xml
• debian/multiflexi.install

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📝 Walkthrough

Walkthrough

This PR adds AppStream metadata for the MultiFlexi application by introducing a component metainfo XML file and updating the Debian packaging to install both the metadata and application icon to their respective system directories.

Changes

AppStream metadata and packaging integration

Layer / File(s)	Summary
AppStream metainfo definition and installation mapping debian/cz.vitexsoftware.multiflexi.metainfo.xml, debian/multiflexi.install	AppStream metainfo XML defines the cz.vitexsoftware.multiflexi component with MIT licensing, application name/summary/description, homepage and bugtracker URLs, VitexSoftware developer identity, content rating, and icon reference. Debian install mappings configure the metainfo file and multiflexi.svg icon for installation to /usr/share/metainfo/ and hicolor scalable icons directory respectively.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A metadata bloom in springtime!
Icons and info in perfect time,
AppStream declares the MultiFlexi way,
Debian packages now brighten the day,
System integration, smooth and sublime! ✨

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/appstream-stock-icons

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