Perf/p1 add zero alloc - #35
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AddComponent, the non-generic config path and AddTag resolved their destination through getNextArchetype with a one-element variadic slice, after boxing the component into ComponentInterface to read its id: two heap allocations per add (the variadic slice escapes because the multi-component branch may retain it as an archetype Type). They now read the id from the typed value and hop the archetype graph directly (archetypeAfterAdd). BenchmarkAddVolt (5800X): 6.27 ms/op, 200000 allocs/op → 4.0 ms/op, 0 allocs/op.
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Zero-allocation single-component add
AddComponent, the config-based add andAddTagresolved their destination archetype throughgetNextArchetype, whose variadic slice escapes to the heap (the multi-component branch may keep it as an archetype type). For a single component that function only forwards toarchetypeAfterAdd: call it directly.BenchmarkAddVolt(5800X): 6.40 ms, 200 000 allocs → 4.03 ms, 0 allocs.