WorldLink

WORLDLINK 0.2.0
===============

FIRST PUBLIC RELEASE

PORTALS
- Added configurable WorldLink portals.
- Added 2x2 portal interiors.
- Added Blackstone portal frame support.
- Frame corners are optional.
- Portals can be activated with flint and steel.
- Breaking required frame blocks collapses the portal.
- Added animated green portal rendering.
- Added layered portal visual effects.
- Added portal particles.
- Added Nether-portal-style ambient sound.
- Added portal destination configuration.
- Added local-world and remote-server destinations.

TRAVEL
- Added travel between independent local Minecraft saves.
- Added travel to remote multiplayer servers.
- Added portal countdown and transition handling.
- Added arrival protection and portal rearming.
- Added creative-mode instant activation.
- Added cold-login protection against accidental portal activation.
- Added horizontal-intent detection before a portal may rearm.
- Added remote transition locking and completion handling.

PLAYER DATA TRANSFER
- Added optional player-data transfer during WorldLink travel.
- Added PLAYER_DATA_TRANSFER and TRAVEL_ONLY travel modes.
- Added persistent pending-transfer storage.
- Added verified transactional player-data restoration.
- Added ownership validation.
- Added transfer expiration and retention handling.
- Added authenticated CLIENT_RELAY support for remote-server travel.
- Added persistent client recovery state.
- Added commit acknowledgement and cleanup.
- Added fail-closed behavior when a transactional transfer is incomplete.
- Added direct completion for remote TRAVEL_ONLY arrivals without creating
  unnecessary transfer transactions.

COMPATIBILITY
- Added the WorldLink public player-data compatibility API.
- Added Project MMO player-data integration.
- Added isolation for failing third-party compatibility handlers.
- A failing compatibility handler aborts transfer preparation rather than
  allowing a partial player-data snapshot.

ADMINISTRATION
- Added player-data transfer policy commands.
- Added pending-transfer inspection.
- Added transfer inspection tools.
- Added administrative recovery of retained pending transfers.
- Recovery verifies the intended player before restoration.
- Recovery consumes a pending transfer only after restoration and
  verification succeed.

RECOVERY & SAFETY
- Pending transfers remain recoverable during their configured retention
  period.
- Successful transfers are moved into consumed storage.
- Failed administrative recovery leaves the pending transfer intact.
- Added persistent portal registry loading across dedicated-server restarts.
- Added safeguards against duplicate, partial, or unintended restoration.

TESTING
- Verified local-world travel.
- Verified dedicated remote-server travel.
- Verified TRAVEL_ONLY travel.
- Verified PLAYER_DATA_TRANSFER travel.
- Verified inventory restoration.
- Verified Sophisticated Backpacks data survived real remote travel.
- Verified Project MMO restoration and verification.
- Verified administrative recovery lifecycle.
- Verified portal rearming and arrival protection.
- Verified dedicated-server restart and portal-registry persistence.