DiscordPresence

Stability and correctness release: no new features, a lot of fixed ones.

Also in this build: a proper mod icon, a full metadata pass so the mod list entry finally looks right, and the 1.21.1 build now runs on ZambieLib, which it requires from here on.

Your config can no longer be lost

• Saves are atomic (written to a temp file, then swapped in), so a crash or power loss mid-save can never truncate config.json.
• A config that fails to parse is preserved as config.json.corrupt instead of being silently overwritten with defaults; hand-recoverable, never destroyed.
• One bad value no longer discards the whole file: every setting and every profile is loaded independently, and malformed entries are skipped.

Discord updates: deduplicated and rate limited

• Identical presence payloads are no longer re-sent every few seconds.
• Updates are rate limited to one per 4 seconds (Discord allows ~5 per 20s), with rapid changes coalesced into a single trailing update, so fast menu clicking or dimension hopping can no longer make the presence go stale.
• A transient game-state race (e.g. leaving a world mid-update) no longer tears down a healthy Discord connection; only real I/O failures trigger reconnect.
• The connection lifecycle now lives entirely on the worker thread (no more cross-thread races on reconnect state), replies are matched by nonce, and game exit can no longer hang on a wedged pipe read.

Fixed features

• Bundled images actually install again: the manifest referenced CamelCase filenames while the jar contains lowercase ones, so 0 of 14 images were being copied to config/discordrpc/images/ from a release jar. Image keys also resolve case-insensitively now (fixes defaults on Linux/macOS).
• Buttons are editable everywhere: empty button slots now render as clickable ghost rows in the preview card; previously a fresh install had no way to add a presence button outside server overrides.
• The small-image badge is clickable: it used to hit-test as the large image and open the wrong editor.
• Party size on servers: no more permanently-full "(5 of 5)"; the real capacity comes from the server-list ping when known, and the party is omitted when it isn't. {max_players} shows "?" instead of echoing the online count.
• "Show in main menu" works: the toggle existed but was never read.
• Importing a Main Menu / Singleplayer / Multiplayer profile now applies it onto that tab's profile instead of creating an invisible duplicate that could hijack the presence via priority.
• Unsaved Multiplayer-tab edits survive a detour into a server-profile editor.
• Export failures are reported instead of always claiming success.

Safety and polish

• Destructive actions (deleting a profile file, removing a server profile, Reset Everything) now require a confirming second click.
• Config screen no longer re-decodes every image on each open and window resize; directory listings are no longer leaked (one file handle per rendered frame on the import screen).
• The Modrinth App conflict check re-runs periodically instead of caching a one-shot result, and no longer false-positives on developers with MODRINTH_* environment variables.
• The "is Discord running?" warning logs once instead of every reconnect attempt; server profile names auto-uniquify (duplicate names collided as export filenames); emoji are no longer split in half by length truncation.
• Client-only marking (displayTest, side="CLIENT") in all Forge/NeoForge metadata; no more red version mismatch in the server list; mod-list logo added; 1.21.1 pack_format corrected to 34; LICENSE file shipped.
• The mod version now lives in exactly one place (root Gradle build) instead of thirteen.