Document public API coverage

[ChrisRackauckas-Claude]

This PR should be ignored until reviewed by @ChrisRackauckas.

Summary

• Attach docstrings to public/exported APIs whose existing documentation blocks were not attached or missing.
• Render CorleoneOED API docs alongside the main Corleone API page.
• Add docstrings for benchmark helper exports.

Local verification

• git diff --check
• timeout 3600 /home/crackauc/.juliaup/bin/julia +1.10 -e 'using Runic; exit(Runic.main(ARGS))' -- --check .\n- timeout 3600 /home/crackauc/.juliaup/bin/julia +1.10 --project=. -e 'using Pkg; Pkg.test()'\n- timeout 3600 env GROUP=CorleoneOED /home/crackauc/.juliaup/bin/julia +1.10 --project=. -e 'using Pkg; Pkg.test()'\n- timeout 3600 env GROUP=OptimalControlBenchmarks /home/crackauc/.juliaup/bin/julia +1.10 --project=. -e 'using Pkg; Pkg.test()'\n- timeout 3600 /home/crackauc/.juliaup/bin/julia +1.10 --project=docs -e 'using Pkg; Pkg.develop([PackageSpec(path=pwd()), PackageSpec(path=joinpath(pwd(), "lib", "CorleoneOED"))]); Pkg.instantiate(); include("docs/make.jl")'\n- Public doc metadata checks for Corleone, CorleoneOED, and OptimalControlBenchmarks all reported missing docs: Symbol[].\n\nDocumenter emitted warnings about an existing citation urldate without url, navbar repo detection, and generated HTML/search index size warnings.

[ChrisRackauckas-Claude]

Scope correction follow-up pushed in 37ad79b.

I re-audited explicit export declarations in:

• Corleone: 12 exported names, missing docs: Symbol[]
• CorleoneOED: 13 exported names, missing docs: Symbol[]
• OptimalControlBenchmarks: 2 exported names, missing docs: Symbol[]

I also added OptimalControlBenchmarks to docs/Project.toml, docs/make.jl, and docs/src/api.md so its exported names are rendered via @autodocs, matching the corrected scope.

Additional local verification after the follow-up:

• timeout 3600 /home/crackauc/.juliaup/bin/julia +1.10 --project=docs -e 'using Pkg; Pkg.develop([PackageSpec(path=pwd()), PackageSpec(path=joinpath(pwd(), "lib", "CorleoneOED")), PackageSpec(path=joinpath(pwd(), "lib", "OptimalControlBenchmarks"))]); Pkg.instantiate(); using Corleone, CorleoneOED, OptimalControlBenchmarks; ...' reported missing docs: Symbol[] for all explicit exports.\n- timeout 3600 /home/crackauc/.juliaup/bin/julia +1.10 -e 'using Runic; exit(Runic.main(ARGS))' -- --check . passed.\n- git diff --check passed.\n- timeout 3600 /home/crackauc/.juliaup/bin/julia +1.10 --project=docs -e 'using Pkg; Pkg.develop([PackageSpec(path=pwd()), PackageSpec(path=joinpath(pwd(), "lib", "CorleoneOED")), PackageSpec(path=joinpath(pwd(), "lib", "OptimalControlBenchmarks"))]); Pkg.instantiate(); include("docs/make.jl")' passed with the same non-fatal Documenter warnings as before.