3D vectors for astrodynamics and rendering
Fix merlint lint warnings: missing docs, doc style, test inclusion
Resolve E400 (missing documentation), E410 (bad doc style), E615
(missing test suite), and E616 (use failf) across the monorepo.
Also fix test_timing to reference Requests.Timing instead of
non-existent Http.Timing.
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lib/vec3.mli
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lib/vec3.mli
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(** The zero vector. *)
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val add : t -> t -> t
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(** [add a b] is the component-wise sum of [a] and [b]. *)
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val sub : t -> t -> t
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(** [sub a b] is the component-wise difference [a - b]. *)
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val scale : float -> t -> t
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(** [scale s v] multiplies each component of [v] by the scalar [s]. *)
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val dot : t -> t -> float
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(** [dot a b] is the scalar (inner) product of [a] and [b]. *)
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val cross : t -> t -> t
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(** [cross a b] is the cross product [a × b]. *)
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val length : t -> float
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(** [length v] is the Euclidean norm of [v]. *)
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val normalize : t -> t
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(** [normalize v] is the unit vector in the direction of [v]. Returns [zero] if