Redirect PeerWeb ORC URLs to bittorrent handle

[cp89cyber]

Summary

• add a rewritePeerWebURL helper that turns peerweb.lol/?orc= links into bittorrent:// URLs, preserving other query params, fragments, and non-root paths
• wire the helper into Window.loadURL and webContents navigation events so both programmatic and user-driven navigation are rewritten before the page loads
• validate the bittorrent handler and include any necessary bt-protocol compatibility adjustments so rewritten URLs actually load
  fixes Get peerweb.lol sites loading as bittorrent:// #319

[RangerMauve]

Hey there, thanks for the PR. Mind also posting a screenshot of what it looks like? I haven't been able to get any peerweb sites to load 😅

[cp89cyber]

Updated per review feedback:

• Moved PeerWeb ORC rewrite into the UI rewrite path in src/ui/omni-box.js (submit, paste-and-go, URL suggestions, and nav item click).
• Removed main-process rewrite interception from src/window.js (will-navigate/loadURL rewrite behavior is gone).
• Removed the standalone rewrite helper/test files so scope stays in OmniBox.

On the earlier bt-protocol compat change: that was an attempt to normalize request shape for bt-fetch, but I’ve removed it from this PR to keep scope focused on the PeerWeb URL rewrite only.

https://peerweb.lol/?orc=<hash> now rewrites pre-navigation to bittorrent://<hash>/index.html (preserving non-orc query params and hash fragment).

I can’t attach a successful page screenshot from this environment because it’s headless (no desktop Electron window to capture), and the public PeerWeb demo hashes were not consistently seeded during verification, so there wasn’t a stable rendered page to screenshot.

[RangerMauve]

I'd rather not merge something we can't consistently load since it'd be a broken feature for anybody that tries it. Lets wait for peerweb to become more reliable or for some other fix.

[RangerMauve]

Would you be interested in taking a crack at #282 or #313 instead?