v5.6.0

What's Changed

• chore(homebrew): update cask to 5.5.0
• feat(tray): reuse usage popover on Windows
• fix(release): shorten release titles to version numbers
• docs: explain session credits usage and privacy
• docs: translate session credits guidance for all readmes
• chore: merge remote main before push
• fix: add startup diagnostics and preserve usage on scan failures
• fix: guide recovery from usage data failures

Full Changelog: app-v5.5.0...app-v5.6.0