Splits the three heavy paths across scoped threads and reports the
speedup and the efficiency against the thread count, with the serial time
taken as the fastest of several runs so a scheduling hiccup cannot inflate
the reference every number is divided by.
Constellation propagation and access search are embarrassingly parallel and
scale as expected until the thread count passes eight, where the machine
stops gaining. Topology construction does not scale at all, and the split
line shows why: the geometric visibility test is two milliseconds while
folding the visible pairs into the graph is four hundred, because each
insertion scans the edges already stored.
bench_scale sweeps the input size over four paths and reports time per
unit, so growth is visible even when absolute times move with the machine.
It shows SGP4 propagation and access search are flat per satellite, while
topology construction is quadratic and planning is quadratic in the number
of tasks.
The README said library code never uses expect, but twelve call sites do,
each guarded by a check on the line above or by construction. Allow that
case explicitly and record each site with its guard in the design notes.
The facade crate enables nothing by default, so cargo check and cargo
clippy without --all-features skipped almost all of its code and every
example. A deliberate mistake placed in feature gated facade code was
invisible to the old commands and caught by the new ones.
Running rustdoc with -D warnings found nine broken links: a misspelt
WGS84, links to methods and constants that are private or in a crate that
is not a dependency, and three redundant explicit targets. Fix each and add
a documentation step to CI so a doc comment cannot drift away from the code
it describes without the build noticing.
README stated that a crate may only depend on layers to its left, but
nothing checked it, and the wording was self contradicting: the example
given for a cross layer jump was a reverse dependency. Clarify the rule,
add scripts/check-layers.sh to enforce it, run it in CI, and record the
boundary cases in docs/design/layers.md.
The cross-layer integration checks were examples containing assertions
that cargo test never ran, so a break in one layer's assumptions about
another could pass CI. Run them explicitly.
The benches/ and tests/ directories were empty placeholders that a virtual
workspace does not compile, and benches/criterion named a third party crate
this workspace forbids. Remove both and add a real zero dependency
benchmark as a facade example.