47f0e674

By: ValentinHirschi <valentin.hirschi@gmail.com>

Modernize the subtracted qqbar to three-photon example

Add a single physical steering card for the imported UV- and IR-subtracted qqbar -> gamma gamma gamma one-loop amplitude. The card consolidates model loading, threshold-aware generation, runtime setup, and integration into the load/generate/integrate workflow, uses five-core graph-group Monte Carlo sampling with summed orientations and LMB channels, enables stability rotations, and stores integration output below the ignored state directory.

Provide shared collinear-limit inspection points together with detailed-event and weight-only command blocks. Make inspect honor the process generate_events setting so the compact block avoids generating, returning, and rendering event records while the detailed block continues to expose per-event and additional-weight cancellations.

Add the modernized 19-member grouped DOT input, retaining the physical graph and local/integrated UV and IR counterterm members while excluding the obsolete standalone triangle-normalization graph. Update imported graph metadata to the current format.

Ignore the legacy qq_aaa cards, backup DOT, editor files, generated states, and integration workspaces while explicitly tracking only the modern TOML and DOT inputs.

Validated with TOML parsing, a threshold-enabled generation and compact eight-point IR inspection smoke test, cargo fmt --check, cargo check -p gammaloop-api, and the inspect CLI parser unit test.