ChatSphere

## 2.2.1

### Added
- Multi-platform build (Architectury): **Fabric** support alongside NeoForge for Minecraft 1.21.1, plus a **Fabric 1.20.1** port
- Bare URLs in messages are auto-linkified and clickable, subject to the URL whitelist config
- Quoting an item-show message now displays the item name instead of the raw slot placeholder
- Server config: `voiceStorageMax` (voice retention cap, 16–10000)
- Voice history re-delivery: players who join receive recent voice messages from their conversations

### Changed
- Voice playback resolution is event-driven (audio arrival registers the playback directly) with a failure short-circuit — no per-frame reflection in the render loop
- Voice uploads deduplicated server-side: multiple recipients uploading the same message are recorded and relayed once
- Config screens debounce per-keystroke saves / config-update packets
- Bundled presets carry a version marker; stale or corrupt presets are reinstalled from the jar automatically
- Date formatters precompiled (removes per-frame allocations)
- Hardcoded UI strings moved to lang keys

### Fixed
- Server security: voice packets validated before history writes, private-channel join requires membership/invite, forged command-message UUIDs dropped, config-update ints range-checked, item NBT capped on the server and parsed with a size-limited `NbtAccounter` on the client
- Corrupted config JSON no longer crashes the game (backed up as `.corrupt`, defaults used)
- Server data files (channels/messages/voice index) written atomically (tmp + atomic move)
- Lock-order inversion between message history and channel state removed
- Theme `preset-stream.ctheme` had invalid 10-digit hex values in its light block, rejecting the whole theme
- Malformed voice frames rejected (frame length validated, no OOM)