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…predecessor parameters - Replace container-based distances[uid]/predecessor[uid] params with function-based distance(g, uid) and predecessor(g, uid) across dijkstra_shortest_paths, dijkstra_shortest_distances, bellman_ford_shortest_paths, bellman_ford_shortest_distances, and prim (via mst.hpp) - Add new concepts to traversal_common.hpp: distance_function_for, predecessor_function_for, distance_fn_value_t type alias - Add _null_predecessor_fn / _null_predecessor for skipping predecessor tracking without a null container, and is_null_predecessor_fn_v<T> trait - Add container_value_fn<Container> CTAD function object adaptor bridging containers to the new function API (wraps c[uid] into fn(g, uid) -> auto&) - Update all test call sites to use container_value_fn(distance) / container_value_fn(predecessor) - Remove is_arithmetic_v<distance_fn_value_t<DistanceFn, G>> from all requires clauses; basic_edge_weight_function already constrains the arithmetic relationship via assignable_from
- Rename shortest_path_infinite_distance() -> infinite_distance()
- Rename shortest_path_zero() -> zero_distance()
- Rename concepts to use 'fn' consistently:
distance_function_for -> distance_fn_for
predecessor_function_for -> predecessor_fn_for
vertex_property_function_for -> vertex_property_fn_for
- Remove unused vertex_id_store_t alias and its static_asserts
- Update infinite_distance()/zero_distance() in dijkstra and
bellman_ford docstrings and inline examples
- Update all docs (dijkstra.md, bellman_ford.md, mst.md,
connected_components.md, label_propagation.md) to match
- Update graph_cpo.hpp comment for raw_vertex_id_t
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Replace range with function parameters in algorithms for greater versatility.