8630ff8b

By: Elijah Cavan <eli_cavan@live.ca>

oneloop: fix workspace test build and nix-ci oneloop test wiring

Two CI failures on a8455a07d, both from the previous commit.

1. `gammaloop-check` / `gammaloop-clippy` (E0063). The `reduce` field added
   to `Save::Dot` was threaded through `save.rs`'s own unit test but not
   through `tests/tests/test_runs/smoke.rs`, the only other construction of
   that struct literal in the workspace. CI runs `cargo check --locked
   --workspace --all-targets`, which builds the `gammaloop-integration-tests`
   member; the per-package checks run locally did not. Adds `reduce: None`.

2. `gammaloop-nextest-oneloop` (missing SYMBOLICA_LICENSE, 70 ms). `nix-ci.nix`
   carries three hand-maintained lists, not one. The previous commit updated
   `nextestPackageGroups` but not `doNotBuild` or the `test` block, so the
   oneloop group was scheduled as an ordinary secret-less build and tripped
   the license guard at flake.nix:2926 instead of running as a test job with
   the secret injected. Every other group has both entries; this adds the
   matching ones for oneloop, plus the two archive-dependency entries.

Verified: `cargo check --locked --workspace --all-targets` with the CI feature
set is clean apart from a pre-existing `pyo3-stub-gen` failure from the local
Python toolchain (identical on main); `cargo check -p gammaloop-integration-tests
--all-targets` clean; `cargo fmt --all -- --check` clean. The nix-ci scheduling
change cannot be verified locally — nix is not installed — so it needs the CI
run to confirm.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Lgs5exR1ZjgEDpd9w3xVqs
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