A small client-side Fabric mod for people who restart their dev server twenty times an hour.

It adds two buttons to the vanilla **disconnected** screen:

Button	What it does
`Reconnect`	Rejoins the last server immediately.
`Auto-Reconnect: ON / OFF`	Persistent toggle. While it is on and the disconnected screen is open, the mod checks every few seconds whether the server is back up, and starts the normal join cycle the moment it is.

A status line under the buttons shows what it is doing (`Checking again in 3s (attempt 4)`, `Server is up - joining!`, …).

So the plugin workflow becomes: `/stop` → rebuild → start server → you are already back in the world.

## Behaviour

- **Only runs on the disconnected screen.** Pressing the vanilla button, hitting Escape or going anywhere else cancels the retry loop instantly. Nothing runs in the background while you are in a menu or in another world.
- **The check is a real Server List Ping**, the same handshake the multiplayer server list uses, so a server whose port is open but which is still starting up is not counted as ready. DNS `SRV` records and the client's blocked-server list are resolved exactly like a normal join.
- **The server it retries is captured while you are still connected**, because Minecraft clears the current server entry during disconnect. Direct Connect and LAN servers work; Realms is skipped, since Realms addresses are temporary.
- Checks run on their own daemon thread, so a hanging DNS lookup or a firewalled host never freezes the game.
- Being kicked is not treated differently from a crash: if you were kicked, the server is up, so it will rejoin. Turn the toggle off, or set `maxAttempts`, if that is not what you want.

## Settings

`config/autojoin.json`, written on first launch:

```json
{
"autoReconnect": false,
"pingIntervalSeconds": 3,
"maxAttempts": 0,
"pingTimeoutMillis": 3000,
"requireStatusResponse": true,
"playSoundOnReconnect": true
}
```

- `autoReconnect` — same value the in-game button toggles.
- `pingIntervalSeconds` — delay between checks, minimum 1.
- `maxAttempts` — `0` keeps retrying forever.
- `pingTimeoutMillis` — connect/read timeout for a single check.
- `requireStatusResponse` — when `false`, an open TCP port is enough. Only useful behind a proxy that accepts connections before it can answer a status request; it can make the client rejoin too early.
- `playSoundOnReconnect` — small ping sound when the rejoin fires, so you notice while alt-tabbed.

AutoRejoin