Bug fixes and broader site coverage.

Amazon: "5 star", "4 star", and other review-filter links now navigate to the
filtered reviews page correctly (previously broken). "Reviews", "More product
details", and other in-page section anchors now jump to the section instead of
reloading the page. "See all sellers" / offer-listing links preserve the
seller filter. Address bars on reviews and offer-listing pages now clean up to
the right page instead of bouncing you to the bare product page.

Spotify: "Share at this moment" timestamps for podcast episodes and tracks
(?t=) are now preserved in the cleaned URL.

Reddit: subreddit front pages (/r/<sub>/) now get their tracking params
stripped too, preserving sort + timeframe (?sort=, ?t=). User-profile post
permalinks (/user/<u>/comments/...) are now recognized.

Facebook: 5 additional URL forms now get cleaned — /<page>/videos/,
/<user>/photos/, /groups/<gid>/permalink/, /events/, and /marketplace/item/.

TikTok: the /share/video/<id> canonical share form is now recognized.

Hotel sites: listing URLs with a trailing slash are now recognized.

Performance: the Amazon content script no longer runs on the AWS console,
sellercentral, advertising console, music.amazon, or developer.amazon —
nothing for it to do there. The background polling on social and hotel sites
pauses when a tab is in the background.