v5.0.0-alpha.12

• feat(core): Share qualified spheroid conversion kernels (#190)
• feat(sun): Add optional bright-star catalog, long-term motion and deck.gl data helpers (#189)
• feat(sun): Add shared sky snapshots, daylight Moon visibility and globe coordinates (#188)
• fix(projection): Qualify spheroid inverse boundaries and allocation costs (#187)
• feat(sun): Add sunlight color, intensity, and cloud-aware skylight (#183)
• feat(sun): Add planet sky data and twilight visibility (#186)
• perf(projection): Reuse grid scratch and expand batch qualification (#185)
• feat(sun): Add moon lighting and star-field orientation (#184)
• feat(geospatial): Prepare ellipsoid and projection convergence (#182)
• perf(projection): Accelerate kinematic Helmert coordinate buffers (#181)
• perf(projection): Accelerate static Helmert coordinate buffers (#180)
• feat(proj4): Select reviewed coordinate operations (#179)
• perf(projection): Specialize numeric batches and reuse bulk scratch (#178)
• feat(proj4): Add caller-owned scalar outputs (#177)
• perf(projection): Reduce grid and coordinate allocations (#176)
• chore: Rename projection module and standardize SPDX source headers (#175)
• feat(polygon): Refine projected triangle meshes with attribute provenance (#167)
• feat(polygon): Add adaptive polyline subdivision through coordinate transforms (#166)
• feat(proj4): Propagate coordinate epochs with prepared velocity models (#174)
• perf(proj4): Reduce mixed-epoch allocations and benchmark pipelines (#173)
• feat(proj4): Add coordinate epochs and kinematic Helmert (tranche 12C1) (#172)
• feat(proj4): Complete typed pipeline operators (tranche 12B3) (#171)