refactor: remove obsolete Entity type erasure

[cdc-as81]

Summary

• Remove the unused Any supertrait from Entity.
• Remove Entity::as_any, Entity::as_any_mut, and BxEntity.
• Retain the explicit 'static bound required by TypeId.
• Update macro-generated and manual Entity implementations and tests.
• Leave unrelated type-erasure mechanisms in entity storage, property storage,
  networks, and value-change counters unchanged.

Breaking changes

This intentionally removes the following public API:

• Entity: Any
• Entity::as_any
• Entity::as_any_mut
• BxEntity

No compatibility shims or replacement aliases are included.

[github-actions]

Benchmark Results

Hyperfine

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
large_sir::baseline	2.4 ± 0.1	2.3	2.8	1.00 ± 0.06
large_sir::baseline_households	2.4 ± 0.1	2.3	2.7	1.00
large_sir::entities	4.4 ± 0.2	4.2	4.7	1.82 ± 0.11
large_sir::households	4.3 ± 0.2	4.1	4.6	1.78 ± 0.10

Criterion

Regressions (slower)

Group	Bench	Param	Change	CI Lower	CI Upper
large_dataset	bench_query_population_derived_property_entities		12.750%	11.870%	13.488%
sample_entity	sample_entity_multi_property_indexed	10000	8.393%	7.167%	9.648%
sample_entity	sample_entity_multi_property_indexed	100000	8.101%	7.103%	9.216%
sample_entity	sample_entity_multi_property_indexed	1000	7.564%	5.883%	9.284%
large_dataset	bench_query_population_multi_indexed_entities		6.896%	6.523%	7.261%
large_dataset	bench_query_population_indexed_property_entities		5.842%	5.414%	6.209%
indexing	query_people_indexed_multi-property_entities		3.459%	2.807%	4.129%
indexing	query_people_count_single_indexed_property_entities		2.485%	1.994%	2.879%

Improvements (faster)

Group	Bench	Param	Change	CI Lower	CI Upper
sample_entity	sample_entity_single_property_unindexed	10000	-11.838%	-16.368%	-6.956%
sample_entity	sample_entity_whole_population	100000	-6.180%	-8.803%	-3.578%
algorithm_benches	algorithm_sampling_single_l_reservoir		-5.711%	-6.667%	-4.727%
large_dataset	bench_query_population_multi_unindexed_entities		-5.084%	-6.959%	-3.321%
algorithm_benches	algorithm_sampling_multiple_known_length		-4.282%	-4.966%	-3.642%
algorithm_benches	algorithm_sampling_single_rand_reservoir		-3.926%	-4.649%	-3.247%
sampling	sampling_single_known_length_entities		-3.552%	-4.128%	-2.908%
examples	example-basic-infection		-3.515%	-4.118%	-2.948%
algorithm_benches	algorithm_sampling_multiple_l_reservoir		-3.102%	-4.092%	-2.102%
sampling	count_and_sampling_single_unindexed_concrete_plus_derived_entiti		-3.025%	-3.544%	-2.525%
indexing	query_people_count_multiple_individually_indexed_properties_enti		-2.656%	-2.872%	-2.384%
counts	single_property_unindexed_entities		-2.510%	-3.984%	-1.135%
sampling	count_and_sampling_single_known_length_entities		-2.130%	-2.457%	-1.778%
indexing	query_people_multiple_individually_indexed_properties_entities		-1.974%	-2.120%	-1.832%
examples	example-births-deaths		-1.822%	-2.108%	-1.505%
sampling	sampling_multiple_known_length_entities		-1.429%	-1.710%	-1.165%

Unchanged / inconclusive (CI crosses 0%)

Group	Bench	Param	Change	CI Lower	CI Upper
counts	reindex_after_adding_more_entities		1.794%	0.831%	2.786%
sample_entity	sample_entity_single_property_unindexed	1000	-1.607%	-4.674%	1.207%
counts	single_property_indexed_entities		-1.455%	-2.560%	-0.375%
counts	index_after_adding_entities		-1.382%	-2.365%	-0.362%
large_dataset	bench_query_population_property_entities		1.322%	0.141%	2.694%
sample_entity	sample_entity_single_property_indexed	1000	-0.918%	-1.524%	-0.293%
sampling	sampling_single_l_reservoir_entities		-0.901%	-1.230%	-0.597%
algorithm_benches	algorithm_sampling_single_known_length		0.797%	0.149%	1.421%
sampling	sampling_multiple_unindexed_entities		0.696%	0.248%	1.115%
sampling	sampling_multiple_l_reservoir_entities		0.676%	0.512%	0.837%
large_dataset	bench_filter_unindexed_entity		0.595%	-2.374%	3.446%
counts	multi_property_indexed_entities		-0.581%	-1.874%	0.655%
indexing	query_people_count_indexed_multi-property_entities		0.440%	-0.046%	0.897%
sample_entity	sample_entity_single_property_indexed	100000	-0.428%	-0.951%	0.220%
large_dataset	bench_match_entity		-0.309%	-0.796%	0.069%
indexing	with_query_results_single_indexed_property_entities		0.263%	-0.260%	1.026%
indexing	with_query_results_indexed_multi-property_entities		-0.244%	-0.748%	0.201%
sampling	sampling_single_unindexed_entities		-0.195%	-0.272%	-0.124%
sample_entity	sample_entity_single_property_unindexed	100000	-0.185%	-0.631%	0.156%
sample_entity	sample_entity_whole_population	1000	0.182%	-0.308%	0.604%
sampling	sampling_single_unindexed_concrete_plus_derived_entities		-0.176%	-0.308%	-0.059%
sample_entity	sample_entity_whole_population	10000	-0.153%	-0.542%	0.293%
sample_entity	sample_entity_single_property_indexed	10000	-0.152%	-0.745%	0.309%
counts	multi_property_unindexed_entities		-0.124%	-1.124%	0.871%
counts	concrete_plus_derived_unindexed_entities		-0.121%	-0.974%	0.786%
indexing	query_people_single_indexed_property_entities		0.115%	-0.020%	0.276%
large_dataset	bench_filter_indexed_entity		0.081%	-1.753%	1.827%
indexing	with_query_results_multiple_individually_indexed_properties_enti		-0.077%	-0.312%	0.112%

Not Compared (no baseline yet)

Group	Bench	Reason
(none)

[RobertJacobsonCDC]

Simple enough! Rebase before merging.

[github-actions]

Benchmark Results

Hyperfine

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
large_sir::baseline	2.7 ± 0.1	2.6	2.9	1.00 ± 0.03
large_sir::baseline_households	2.7 ± 0.1	2.6	2.9	1.00
large_sir::entities	5.0 ± 0.2	4.8	6.0	1.84 ± 0.08
large_sir::households	4.9 ± 0.1	4.7	5.1	1.81 ± 0.05

Criterion

Regressions (slower)

Group	Bench	Param	Change	CI Lower	CI Upper
sample_entity	sample_entity_multi_property_indexed	10000	38.973%	37.974%	39.881%
sample_entity	sample_entity_multi_property_indexed	100000	38.581%	37.308%	39.800%
sample_entity	sample_entity_multi_property_indexed	1000	37.525%	36.327%	38.680%
sample_entity	sample_entity_single_property_indexed	10000	3.931%	3.493%	4.261%
sample_entity	sample_entity_single_property_indexed	1000	3.664%	3.137%	4.145%
sample_entity	sample_entity_single_property_indexed	100000	2.778%	2.131%	3.460%
counts	multi_property_indexed_entities		2.766%	2.018%	3.580%

Improvements (faster)

Group	Bench	Param	Change	CI Lower	CI Upper
large_dataset	bench_query_population_multi_indexed_entities		-23.703%	-24.282%	-23.044%
sample_entity	sample_entity_single_property_unindexed	1000	-18.135%	-19.432%	-16.717%
large_dataset	bench_query_population_derived_property_entities		-6.089%	-6.643%	-5.501%
sample_entity	sample_entity_single_property_unindexed	10000	-5.625%	-8.729%	-2.552%
sample_entity	sample_entity_whole_population	1000	-3.970%	-4.811%	-3.148%
sampling	sampling_single_known_length_entities		-3.230%	-4.254%	-2.210%
indexing	query_people_multiple_individually_indexed_properties_entities		-1.776%	-1.945%	-1.590%
sample_entity	sample_entity_whole_population	100000	-1.728%	-2.026%	-1.445%
sampling	sampling_multiple_known_length_entities		-1.681%	-2.100%	-1.349%
indexing	query_people_count_multiple_individually_indexed_properties_enti		-1.601%	-1.756%	-1.482%
sample_entity	sample_entity_whole_population	10000	-1.548%	-1.914%	-1.047%

Unchanged / inconclusive (CI crosses 0%)

Group	Bench	Param	Change	CI Lower	CI Upper
large_dataset	bench_filter_unindexed_entity		-1.840%	-5.164%	1.566%
sampling	sampling_single_l_reservoir_entities		1.384%	0.995%	1.856%
sampling	count_and_sampling_single_known_length_entities		-1.364%	-2.494%	-0.337%
examples	example-births-deaths		-1.271%	-1.636%	-0.840%
sample_entity	sample_entity_single_property_unindexed	100000	1.166%	0.618%	1.810%
large_dataset	bench_query_population_multi_unindexed_entities		-1.097%	-1.326%	-0.890%
indexing	query_people_single_indexed_property_entities		-1.073%	-1.546%	-0.573%
algorithm_benches	algorithm_sampling_single_rand_reservoir		-0.998%	-1.895%	-0.349%
indexing	with_query_results_single_indexed_property_entities		-0.973%	-1.423%	-0.447%
counts	reindex_after_adding_more_entities		0.957%	0.519%	1.538%
counts	index_after_adding_entities		0.936%	0.479%	1.491%
large_dataset	bench_query_population_indexed_property_entities		-0.573%	-0.922%	-0.291%
sampling	sampling_single_unindexed_concrete_plus_derived_entities		-0.553%	-0.745%	-0.266%
indexing	with_query_results_multiple_individually_indexed_properties_enti		0.533%	0.202%	0.967%
large_dataset	bench_match_entity		0.493%	-0.665%	1.613%
counts	single_property_indexed_entities		0.470%	0.217%	0.728%
counts	single_property_unindexed_entities		0.463%	-0.265%	1.261%
large_dataset	bench_filter_indexed_entity		-0.400%	-1.626%	0.966%
indexing	with_query_results_indexed_multi-property_entities		-0.391%	-0.629%	-0.132%
indexing	query_people_indexed_multi-property_entities		-0.318%	-0.579%	-0.077%
algorithm_benches	algorithm_sampling_multiple_known_length		-0.232%	-0.473%	0.034%
indexing	query_people_count_single_indexed_property_entities		0.225%	-0.133%	0.701%
counts	concrete_plus_derived_unindexed_entities		0.180%	-0.130%	0.721%
algorithm_benches	algorithm_sampling_single_l_reservoir		-0.167%	-0.725%	0.374%
large_dataset	bench_query_population_property_entities		0.158%	-0.288%	0.685%
indexing	query_people_count_indexed_multi-property_entities		-0.142%	-0.269%	0.037%
sampling	sampling_multiple_l_reservoir_entities		0.101%	-0.213%	0.449%
algorithm_benches	algorithm_sampling_single_known_length		0.083%	-0.242%	0.484%
examples	example-basic-infection		-0.063%	-1.573%	1.930%
sampling	sampling_multiple_unindexed_entities		0.032%	-0.072%	0.143%
sampling	sampling_single_unindexed_entities		0.027%	-0.098%	0.150%
sampling	count_and_sampling_single_unindexed_concrete_plus_derived_entiti		-0.017%	-0.103%	0.080%
algorithm_benches	algorithm_sampling_multiple_l_reservoir		-0.011%	-0.490%	0.419%
counts	multi_property_unindexed_entities		-0.004%	-0.290%	0.441%

Not Compared (no baseline yet)

Group	Bench	Reason
(none)