This update rolls up everything since 3.13.

Themes
- Seven themes to choose from in the settings cog: Dark, Light, Catppuccin
Mocha, Tokyo Night, Everforest, Paper, and Rose Pine Dawn.
- Contrast pass across every theme, so muted text stays readable.
- Per-user nickname colours are now adjusted to stay legible on light themes.

Cameras
- Rebuilt cam gallery: cameras are packed into a justified layout that fills
the available space instead of a rigid grid.
- Focused-camera mode rebuilt. Frames hug the real video aspect ratio,
thumbnails move to their own column, and secondary cameras are no longer
cropped off the bottom of the panel.
- Broadcast timer on active cams, and cams automatically restart after a
dropped feed.
- Firefox camera switching fixed: the camera you pick in the broadcaster panel
is now the one that actually goes out.
- Hidden cams still persist across refreshes and are listed in a collapsible
section of the user list.

Chat
- Consecutive joins and leaves collapse into a single counted row instead of
flooding the log.
- Chat history is retained when the room clears.
- Links preview inline: images embed directly, other links get a compact
Open Graph card.
- Timestamps keep their seconds and refresh as time passes; empty rows that
showed nothing but a timestamp are removed.
- Mention sound and highlight when your name comes up.
- GIF and emote picker with search plus an emoji tab, and ":name"
tab-completion in the chat box.
- Chat now uses the bundled Hanken Grotesk font.

User list
- Density and layout pass, karma tiers, year badges, and per-user colours.
- The filter searches active users and hidden cams at the same time.

Private messages
- Unread badge and pulse on inactive tabs, drag and resize, and per-conversation
history that survives closing the panel.

Interface
- Floating overlay scrollbars that do not take up layout space.
- Frosted chat input bar.
- Redesigned Go Live panel.

Performance
- Long-session fixes: the live chat log is capped and a number of listener,
timer and localStorage leaks were fixed, so the page no longer gets
progressively slower the longer it stays open.