Fix reference checks and quarantine handling for Hass-Cleaner 1.1.2

[dkwolf1]

Summary

• Handle malformed reference sources without aborting the entire analysis.
• Improve Companion failure diagnostics and connection error messages.
• Refresh visible results after scans and entity filter changes.
• Use atomic quarantine moves to prevent copy-and-delete data loss.
• Preserve support for existing quarantine records.
• Improve English and Dutch translations and update documentation.
• Prepare app and Companion version 1.1.2.

Validation

• 149 Python tests passed; 1 skipped.
• Reference UI regression tests passed.
• English and Dutch translation regression tests passed.
• Companion installation ZIP built successfully.
• Git diff whitespace checks passed.

Testing and recovery

This is a test release. Live Home Assistant validation is still required.

New quarantine operations store files in .hass-cleaner-quarantine inside the Home Assistant configuration directory. Cross-filesystem moves are refused. Existing quarantine remains supported.

Create a full backup including Home Assistant configuration and app data before testing. Update both the app and Companion.