Group Chat

Second public release. Everything since the pre-repo 1.0 is now in git — this is a big one.

✨ Highlights

Group History (last 5) — never lose context. Every group message is now remembered per-player per-group (history.json) and you can pull it anytime. Try /group history, /gmsg history or /group mySquad history 3. Works with gm/gmoffline aliases too.

Toggle Chat Mode — lock your chat to a group. /group toggle mySquad (or /gmsg toggle) routes every message you type straight to that group until you toggle off, type cancel, or disconnect. No more prefixing every line.

Smarter multi-group handling — in 2+ groups? Running /group history or /group toggle without a name now asks you interactively in chat: “type the name of one of the groups to select it” — just type the name or cancel. Single-group players can just omit the name entirely.

Fabric persistence fixed — Fabric saves now correctly go to FabricLoader.getGameDir()/groupchat (with migration from old locations). No more groups vanishing after a restart on certain launchers.

Hardened & polished — atomic saves, corrupt JSON backup, 500-char / 200-message caps, § sanitization, 30-day prunes, /unread page/clear pagination, permission nodes, audit logging, and much more.

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Added

• Per-group history (FIFO 5, timestamps oldest→newest) — /group history, /group <group> history [1-5], /gmsg history, /gm history, /gmoffline history + group-first variants. Single-group shorthand when you’re in exactly 1 group.
• Toggle chat — /group toggle [group], /gmsg toggle [group] (and gm/gmoffline variants), ToggleSession in-memory, cleared on quit/disconnect/cancel.
• Interactive selection for both toggle & history when in multiple groups (pending chat-selection).
• Startup logging — both Paper and Fabric now log GroupChat data folder: <abs> and Loaded <n> groups from …/groups.json.

Fixed

• Fabric: persistence after restart (canonical getGameDir() + migration + absolute path logging).
• Paper: now mirrors Fabric’s loaded-count logging via plugin logger.

Security

• Atomic tmp+ATOMIC_MOVE writes, corrupt .corrupt.<ts> backups, entry validation (^[A-Za-z0-9_]{2,24}$, owner-in-members).
• Mailbox DoS caps (500 chars / 200 msgs, reject newest), § stripping, expired/oversized prune on load.
• /unread [page|clear] pagination (Paper + Fabric).
• Access control: /group members requires membership, invite dedupe, groupchat.use (default true) gates on all Paper commands, groupchat.admin (op) reserved.
• PaperPlatformBridge ConcurrentHashMap name↔UUID cache.
• Pin paper-api 26.3.build.8-alpha.

Changed

• Targets Minecraft 26.3, JDK 26, Loom 1.18.2, Loader 0.19.5, Fabric API 0.160.6+26.3.
• plugin.yml usages updated for new syntax.

Full technical changelog + commit hashes: https://github.com/ThermedWolf/group-chat/releases/tag/v2.0.0

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