Simply Speakers 0.8.3

Changed

• Centralized Server Playback Management: Listener tracking and range scanning moved out of SpeakerBlockEntity and ProxySpeakerBlockEntity into a new ServerPlaybackManager driven by ServerSpeakerRegistry, closing issue #10.
• Persistent Emitter Snapshots: The registry now retains ServerEmitter descriptors (position, network key, range, volume, dropoff, proxy flag, active intent) that survive chunk unloads, so speaker lifecycle is decoupled from chunk loading state.
• Central Subscription Indexes: The manager maintains bidirectional player-to-emitter and emitter-to-player mappings and dispatches PlayAudioPacketS2C/StopAudioPacketS2C directly, with the shared ServerPlaybackPlanner (backed by ListenerRangePolicy) deciding every subscription transition.
• Dimension-Transition Safety: Scans iterate all online players and compare dimensions, so moving between dimensions cleanly stops subscriptions instead of leaving orphaned audio.
• Sable Compatibility Preserved: The 1.21.1 manager resolves emitter and listener positions through SpeakerSpatialResolver.resolveLogical, so moving plot bodies with speakers keep working.

Fixed

• Unloaded Speaker Chunk Continuity: A speaker whose vanilla chunk unloads while players remain in range no longer strands listeners; the centralized scan keeps playing and, crucially, sends StopAudioPacketS2C when those listeners eventually leave range.
• Orphaned Listener Lifecycle: Listener exit no longer depends on a ticking block entity, fixing stuck audio when speaker chunks unload on servers with large (128–512 block) speaker ranges.
• Natural EOF While Unloaded: Non-looping audio now ends server-side in the centralized scan even when the speaker's chunk is unloaded, instead of playing indefinitely.
• Clean Player Disconnects: Disconnecting players are purged from all subscription indexes immediately, preventing stale hysteresis state across reconnects.

Development

• Pure Decision Core: Added ServerPlaybackPlanner and ServerEmitter to version-independent common code, with unit tests covering unloaded-chunk continuity, exit hysteresis, dimension changes, disconnects, and emitter shutdown (issue #10 roadmap item 6).
• Structural Wiring Tests: Added ServerPlaybackManagerWiringTest verifying manager/registry/loader wiring across all supported versions, and updated existing BE wiring tests to enforce delegation to the central manager.
• Block Entity Simplification: SpeakerBlockEntity and ProxySpeakerBlockEntity no longer hold listeningPlayers sets or per-BE scan loops; they only publish emitter snapshots and delegate stop dispatch.