didericis 367b5adc71 Add source-dual cut experiment with chained entry points ...

Reads the chained medial tire cut off as a source-dual cut (planar dual of
G with the cut edges removed), as in seed59_min5_dual_cut_1.png, and counts
the missing dual edges around each dual face (vertex of G).

Four chained entry points, broad to narrow control:
  - random_dual_cut: random min-degree-5 maximal planar graph -> ...
  - dual_cut_random_source: random level source -> ...
  - dual_cut_random_entry: random root entry tooth -> ...
  - medial_tire_dual_cut: worker chaining the walk-depth labelling/cut.

Refactor _label_treads to accept an optional root_entry_edge (default
preserves the arbitrary-up-tooth behaviour) so the worker can pin the entry.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-15 10:33:15 -04:00

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