Add RockSniffer queue sync

[Jamesllllllllll]

Summary

Adds a RockSniffer addon integration that can keep the current playlist song in sync with the song that just started in Rocksmith, and documents a one-command local HTTPS tunnel for OAuth and local testing.

What Changed

• Added a RockSniffer relay token, dashboard setup card, downloadable addon package, and local addon launch guidance in settings.
• Added RockSniffer relay endpoints and addon release metadata, including safer current-song handoff when a different song is already marked as playing.
• Added the packaged RockSniffer addon assets and version-aware update checks.
• Added a cross-platform npm run tunnel helper for the repo-local Cloudflare tunnel.
• Reduced catalog search query variable pressure so broader filtered searches stay reliable.
• Bumped the release to 0.10.0 and added release notes.

How To Test

1. Run npm run check:ship.
2. Open the dashboard settings page and confirm the RockSniffer addon card shows the relay URL, download button, and local addon page link.
3. Download the addon package, extract rocklist_live_connector into RockSniffer's addons folder, start RockSniffer, then open http://127.0.0.1:9938/addons/rocklist_live_connector/rocklist_live_connector.html.
4. Save the relay URL in the addon and verify the addon reports setup state and version status.
5. Start a song in Rocksmith that matches a queued playlist item and confirm RockList.Live updates the current song.
6. If a different queued song is already marked as playing, start a matching Rocksmith song and confirm the previous current item is marked played before the new match becomes current.
7. Run a broader filtered song search and confirm search results still load normally.
8. Run npm run tunnel -- --help and confirm the local tunnel helper prints the repo-local defaults.

Screenshots Or UI Notes

• Dashboard settings now include a RockSniffer addon setup card with the relay URL, addon download, and a direct local addon page link.
• The RockSniffer addon now runs from RockSniffer's local web server instead of by opening the HTML file directly.
• The addon only automates syncing the current song when a match is confident. End-of-song marking remains manual.

Checklist

• I tested the change locally
• I updated docs or examples if needed
• I called out any follow-up work or known limitations

[github-actions]

Preview deployment updated.

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