in der Roademap weitergemacht

CLAUDE.md

@@ -100,6 +100,19 @@ solution's ancestral branch highlighted and labelled with its id. Every solution
 running number (`Farm._NeueId`, `1..N`); the ancestry is not encoded in the id but recorded
 via each node's stored predecessor (parent id) and followed back along the highlighted branch.
 
+Pass `--seed <int>` to make a run fully reproducible: `platz.py` calls `random.seed()` with
+it before any GA action, so the same seed always yields the same seating (for support
+questions like "why is Aunt Erna seated there?" — rerun with the same seed to get the exact
+same plan). Reproducibility needs more than seeding the RNG: `Person` defines an Id-based
+`__hash__`/`__eq__` (each booking has a unique running integer Id) so that the `set()` of
+people in a `Gruppe` iterates/`pop()`s in a process-stable order — otherwise the order would
+hinge on object memory addresses (and, for string-keyed containers, `PYTHONHASHSEED`), leaving
+the run non-reproducible even with `--seed`. Integer Ids aren't affected by `PYTHONHASHSEED`,
+so no environment tweaking is required.
+
+`Farm.TopN(n)` returns the `n` best solutions (descending), clamped to `[0, len(Pool)]` — the
+list generalisation of `Farm.Bester()` (single best), for surfacing several good alternatives.
+
 Run the test suite with `bin/run_tests.bat` / `bin/run_tests.sh` (or directly: `python -m
 unittest discover -s tests -p "test_*.py" -v`). A stray global `PYTHONPATH` entry on this
 machine points at an unrelated project that also defines a `tests` package — this shadows