PlayerDataSyncReloaded 26.10-ALPHA.001 — Paper / Spigot

Alpha build. Compiles and passes the unit tests; not yet exercised on a live network. Test on a staging server first.

The Paper jar no longer embeds bundled/*.jar. Velocity and Fabric are separate downloads (PlayerDataSyncReloaded-Velocity-26.10-ALPHA.001.jar, PlayerDataSyncReloaded-Fabric-<mc>-26.10-ALPHA.001.jar).

Save on shutdown and reload: Paper disables plugins before it kicks players, so PlayerQuitEvent never reached the plugin on /stop and everything since the last autosave was lost. onDisable and /pds reload now save every online player and wait for the writes.
Proxy save acknowledgement: when the Velocity bridge sends save:, the plugin answers saved:<uuid> on pds:sync once the write has landed. The proxy holds the server switch until then, so the destination server never reads a stale profile.
/pds info <player>: shows whether the stored data has been applied, whether a load is in flight or queued, and the timestamps of the applied record and the last save.

/pds reload refused all saves: the reload created a fresh sync manager that did not know online players already had their data applied.
Health 0 killed the player on the next server: quitting on the death screen saved health = 0, which was applied on join. Health is only applied when it is above 0.
The "Syncing your data..." message is no longer sent again on proxy/Redis reloads of an already-synced player.

Redis auto-reconnect: the subscriber ran on a common-pool thread and died silently when the connection dropped, so other servers stopped receiving reload notifications. It now runs on its own thread and reconnects every 5 s.
Encryption failure no longer writes plaintext: if CryptoUtil.encrypt throws, the save fails instead of storing unencrypted JSON (SQL and Mongo).
Exact unchanged-check: skipping a save because "nothing changed" now compares the full serialized inventory instead of String#hashCode, so a hash collision can no longer drop a changed inventory.
SyncManager#handleQuit returns a CompletableFuture that completes when the write is done; new saveAll and markLoaded for shutdown/reload handling.
Includes the 26.9 ordering fixes: loads are serialized per player, saves are refused until the stored profile has been applied, a record that is already applied is not re-applied, and failed SQL writes are counted and retried instead of being cached as "unchanged".

Paper, Spigot, Purpur or Folia — Minecraft 1.20 to 26.2 (Java 21+, Java 25 for 26.x)
MySQL, MariaDB, PostgreSQL or MongoDB
Optional: Redis, Velocity bridge 26.10-ALPHA.001, Vault + economy plugin

PlayerDataSync