3.3.0

ObserverLauncher 3.3.0

3.3.0 is a feature release. You can now check on a server from another device, keep your
plugins/mods/datapacks up to date from inside the app, and the World Map is smoother to pan. Nothing
about your existing setup changes — no migration, same settings.

This is the plain-English release note. Developers: see the full technical changelog in CHANGELOG.md.

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Check on your server from another device

New in Settings → Remote access (off by default). Turn it on and you get a small, private web
address you can open from your phone or another PC to see a running server — without opening any
port on your router.

• It can read: server status, the console, who is online, and the list of your servers.
• It can send one console command — but only if you switch Read-only OFF. Read-only is ON by
  default.
• It can never install, edit or delete anything. Those stay in the app.
• Access is protected by a long token (stored encrypted on your PC) and, if you want, a list of
  allowed IP addresses.

The safe way to reach it from outside your home is Tailscale (a free private network between your
own devices). The app links you to a short step-by-step guide. There is also an advanced Bind
option if you prefer to point it at a specific address yourself.

If you run more than one server, you can target any of them — the address accepts ?instance=<id>,
and there is a /instances list to find the ids.

Keep your content up to date

The Content tab now shows the version of each plugin/mod/datapack and a Check updates
button. When a newer build exists, that row gets an Update button — one click installs it over the
old file (the old file is backed up first).

You can also Enable / Disable a plugin or mod without deleting it: disabling renames the file to
….disabled, so it stays on disk and you can turn it back on anytime. (The server ignores disabled
files.)

The same three actions are available to an AI assistant over MCP (check_updates, update_content,
toggle_content) — so a whole batch can be checked and updated in one go.

Datapacks are easier to manage

• .mcfunction and .snbt files are now editable in the built-in editor (most folder datapacks
  are made of these).
• Extract a .zip datapack into a folder in one step (folder datapacks are easier to edit).
• Validate a datapack before you start the server: the app reads its pack.mcmeta and warns you if
  the pack is built for a different Minecraft version (a common cause of a datapack that silently does
  nothing or crashes the world). If the version is too new to know, it says so honestly instead of
  guessing.
• Unzipped datapacks now show up in the list and can be deleted normally (before, a folder
  datapack was invisible).

The World Map is lighter

• Panning is smoother — the map no longer re-computes colours for every cell on every frame, and
  it draws large same-coloured areas in one go.
• The small overview map refreshes a few times a second instead of on every frame, and scales to big
  worlds.
• Less memory: the map releases its biome/colour caches when you leave the tab.

Recovering from a mistake

When an AI assistant (over MCP) writes or edits a file for you, the app now keeps a backup copy of
the previous file first — so an unwanted change can be recovered, just like the player-data editor
already did.

Smaller things

• The background status check asks the server for TPS less often when everything is healthy, and
  immediately when it is not — a little less work for a busy server.
• Cleaned up unused text strings (no visible change).

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Upgrade note: your settings and servers are untouched — there is no migration in this release.
Just install 3.3.0 over 3.2.5 as usual.