Pulsar Lighting Engine

Changed

• Resolve sky source-face exclusions once per queue entry, retaining the encoded direction order and all sided/contextual/fluid behavior.

• Specialize block propagation through verified plain air, avoiding generic absorption, emission and sided-flag work after the existing level guards.

• Keep a just-active shared worker available for a bounded 5 microseconds for rapid follow-up work, without holding dispatcher or queue monitors.

• Claim paired same-chunk light work after the first lane finishes, so later notifications can join the queued partner batch while the existing 5x5 reservation remains held.

• Introduce managed Pulsar Config Version 2. Missing or mismatched versions regenerate the whole config with current defaults before settings are loaded; matching versions retain custom settings.

• Default server lighting configs to automatic shared-pool sizing (-1), including migration from older configs, and document restart requirements.

• Expose dedicated-worker batch time, unload lighting wait time, idle engine cache size and statistics log interval with bounded values and config comments.

• Optimize light propagation, source scanning, skylight updates and chunk-map lookups to reduce allocation and redundant work.

• Track contextual TileEntity light changes each tick, keeping Mod callbacks on the world thread.

• Coalesce client render updates (features.coalesceClientRenderUpdates) and alternate sky/block tasks within a shared soft budget (features.clientLightBudgetMs, default 2 ms).

• Add a configurable shared server lighting pool (features.experimentalServerLightThreads, default -1 selects CPU/3 workers), with nearby-task exclusion and paired sky/block scheduling.

• Add opt-in shared-pool range relighting (experimentalRangeRelight, default off), with world-wide job exclusion and generation-safe publication.

• Update lighting statistics once per world tick, with dimension IDs and more detailed task, client and contextual-sampling timings.

• Share a 10 ms lighting wait allowance across chunk unloads per world tick; unfinished lighting is invalidated for the next load.

Fixed

• Fix stale or incorrect skylight after dense edits and changes to opaque or shaped blocks, including across chunk boundaries.
• Preserve block light in absent sections when sending full or partial chunks.
• Recheck light-relevant block changes and include the center chunk's Fluidlogged capability during initial lighting.
• Prevent light-array publication after chunk unload and exclude unfinished lighting from cache saves. Lighting cache version is now 12; older caches are relit when their chunks next load.

Removed

• Remove the Pulsar Colored Lighting Addon backend API and integration hooks. Pulsar now uses its built-in scalar engines.

Full Changelog: https://github.com/Sumire-Labs/Pulsar/compare/0.4.0...0.5.0