v5.0.0-alpha.10

• feat(proj4): Add experimental TypeScript engine and parity roadmap (#142)
• feat(proj4): Add parity inventory and common projection plugins (#143)
• feat(proj4): Integrate CRS and datum transforms (tranches 3–4) (#144)
• feat(proj4): Add projection catalogue (tranche 5) (#145)
• build(deps): Bump undici from 6.28.0 to 6.29.0 (#146)
• feat(proj4): Add horizontal datum grids (tranche 6) (#147)
• feat(proj4): Add typed-array batches and benchmarks (tranche 7) (#148)
• fix(proj4): Correct parity audit normalization errors (#149)
• feat(proj4): Expand structured CRS support and add native engine guide (#150)
• feat(website): Distinguish next release docs and validate both builds (#151)
• feat(proj4): Close corpus axis gaps and add lazy plugin entry points (#152)
• build(deps): Bump joi from 17.13.6 to 17.13.8 (#153)
• feat(proj4): Qualify named projections and real grids against native PROJ (#154)
• feat(proj4): Complete native accuracy and release qualification (#155)
• feat(proj4): Make TypeScript Projection the default with lazy loading and live benchmarks (#156)
• fix(website): Resolve CRS subpaths from source in clean builds (#157)
• feat(timezone): Add module with lazy geographic lookup (#158)
• feat(proj4): Strengthen benchmarks and compile transform constants (#159)
• feat(proj4): Add projection-specific batch kernels (tranche 10) (#160)
• feat(proj4): Qualify accuracy domains and refine numerical kernels (tranche 11) (#161)
• feat(timezone): Add local calendar and timezone transition utilities (#162)
• ci: Shorten PR browser qualification without reducing coverage (#163)
• feat(proj4): Add explicit vertical-grid height transformations (#164)