3D vectors for astrodynamics and rendering
Add missing READMEs; expand short ones
New READMEs for: ocaml-auth, ocaml-cose, ocaml-http, ocaml-osv,
ocaml-rego, ocaml-scitt, ocaml-sigstore, ocaml-vec3.
Expanded: ca-certs (7→40 lines), osrelease (8→45 lines).
Each includes: synopsis, installation, usage example, API overview,
and license. Skipped ocaml-cel and ocaml-chor (no code yet).
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README.md
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## vec3 -- 3D vectors for astrodynamics and rendering
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Minimal 3D vector library providing a shared type for astrodynamics,
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coordinate transforms, and rendering. Used as the common vector type across
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kepler, sgp4, globe, and coordinate packages.
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## Installation
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```
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opam install vec3
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```
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## Usage
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```ocaml
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let open Vec3 in
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let a = v 1.0 2.0 3.0 in
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let b = v 4.0 5.0 6.0 in
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let c = add a b in
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let d = cross a b in
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let len = length c in
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let unit = normalize d in
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Format.printf "%a (length: %f)\n" pp unit len
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```
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## API
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- `v x y z` -- create a vector
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- `zero` -- the zero vector
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- `add`, `sub`, `scale`, `negate` -- arithmetic
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- `dot`, `cross` -- products
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- `length`, `distance` -- metrics
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- `normalize` -- unit vector (returns `zero` if near-zero input)
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- `equal ?eps` -- approximate equality (default epsilon: 1e-12)
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- `pp` -- pretty-printer
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## License
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ISC