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feat(INT-OBJECT-01F): execute finite type and metaclass protocols - #255
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October 27, 2026 02:12
This was referenced Oct 27, 2026
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Adds canonical adopted value types, nested tuple isinstance/issubclass with short-circuit/error order, native ancestry, three-argument type and finite type-derived metaclasses. Metaclass selection/conflicts, new/init/call, descriptor precedence and class-cell propagation run through owned callbacks; type.new retains notification and outer destinations. Class syntax gains the verified additive class-meta opcode in bytecode 5.
Custom namespace preparation/mappings, extra class keywords, callable factories, builtin instance layouts and additional metaclass special slots remain explicit refusals. No-argument dict() is available only in classes-source/1; populated forms remain deferred.
Validation: all 385 Node tests pass, including callback collection/cancel/close, actual OOM, recursion/work limits and eight unchanged composed resource baselines. All 113 source/reference cases pass in Node/Chromium drain/step; the 39-class and 121-probe inventory matrices pass. The 60-test Python run had one optional-runtime skip and one sandbox loopback error; the affected HTTP test passed when rerun with local access. Engine lock and whitespace checks pass.
Depends on #254. Closes #250.