Adds the NetEvolve.Http.Correlation.Ulid.ByteAether provider, which generates correlation IDs via ByteAether.Ulid to guarantee strictly monotonic ordering for IDs created within the same millisecond — unlike the existing NetEvolve.Http.Correlation.Ulid package, whose IDs are randomly ordered inside a millisecond.

This supersedes #730 by @Seramis, whose commits are preserved here with original authorship. That PR could not be updated: "Allow edits by maintainers" is disabled on the source fork, so the review fixes below could not be pushed to it, and its workflow runs were additionally gated behind manual approval.

Changes

• New package src/NetEvolve.Http.Correlation.Ulid.ByteAether with an internal UlidCorrelationIdProvider and a WithUlidGenerator() builder extension mirroring the existing ULID package.
• ByteAether.Ulid 1.4.0 added to central package management.
• Unit tests covering provider registration, null-argument handling, uniqueness under Parallel.For, and sequential ordering across net8.0/9.0/10.0.
• Package README plus a new "Using ULID Provider" section in the root README documenting both providers as alternatives.

Review feedback from #730

Three findings from the automated review were adopted:

• The Basic Setup sample omitted using NetEvolve.Http.Correlation.Ulid.ByteAether;, the namespace declaring WithUlidGenerator(), so it could not compile as shown.
• The "No Coordination Required" benefit claimed distributed generation "without inter-node coordination or collisions". ByteAether's monotonicity derives from lock-free CAS over per-generator state, which establishes neither a total order across nodes nor collision-freedom. Reworded and scoped to a single process.
• Ordering assertions used TUnit's generic IsLessThan, which resolves through culture-sensitive string.CompareTo. ULID sortability is defined ordinally, so the test now asserts on string.CompareOrdinal.

Three were declined, with reasoning recorded in the #730 threads: splitting the root README snippet (exclusivity is already stated per import), extending the builder-contract test (would diverge from the identical test in NetEvolve.Http.Correlation.Ulid.Tests.Unit), and adding a clock seam for a same-millisecond monotonicity test (widens production API to assert a guarantee owned by the dependency).

Verification

• dotnet build: 0 errors, 0 warnings.
• 15/15 unit tests pass on net8.0, net9.0, and net10.0.

Notes

• Rebased onto current main, so it includes chore(deps): update dependency tunit to 1.62.0 #731 (TUnit 1.62.0) and feat: Replace NSubstitute with TUnit.Mocks in test suite #732 (TUnit.Mocks migration); feat(ulid): add NetEvolve.Http.Correlation.Ulid.ByteAether provider for monotonic event ordering #730 was based on a stale main.
• dotnet format reports a pre-existing CHARSET error on tests/NetEvolve.Http.Correlation.HttpClient.Tests.Unit/HttpCorrelationIdHandlerTests.cs (missing UTF-8 BOM). Present on main since chore(deps): update dependency netevolve.defaults to 2.4.0 #604 and unrelated to this change; needs a separate fix.