Endless v0.9

Embeddium / Oculus compatibility (Forge 1.20.1):

• Supply sparse terrain, block entities and light snapshots with bounded camera-following section registration.
• Preserve fractional camera movement for initial transparent mesh sorting and later re-sorts at extreme heights.
• Use exact destruction-position keys for block-entity mining overlays.
• Refresh visible skylight when distant sparse roof pages arrive or are removed.
• Add native rendering regressions and a packaged client-mixin/runtime-selector gate.
• Refresh sparse Embeddium skylight after dense-core block/light updates, and invalidate the snapshot halo above and below the render window.
• Batch overlapping dense skylight refreshes once per render frame, including shared Oculus passes; add repeated-edit and cached skylight value regressions.

What's Changed

• Fix Forge 1.20.1 Embeddium and Oculus expanded-height rendering by @UpperMoon0 in #20
• Release Endless 0.9 with Embeddium/Oculus changelog by @UpperMoon0 in #21

Full Changelog: v0.8...v0.9