Add program caches (in-memory, sqlite, filestream)#1912

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cpcloud wants to merge 17 commits intoNVIDIA:mainfrom

cpcloud:persistent-program-cache-178

Commits on Apr 24, 2026

feat(core.utils): add program caches (in-memory, sqlite, filestream)
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refactor(core): unify Program source retention into _code field
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fix(core.utils): treat no_source_include as truthy-only in cache key guard
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refactor(core): extract _raw_compile seam on Program
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feat(core): add Program.compile(cache=...) convenience wrapper
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test(core): cover Program.compile(cache=...) behavior and error paths
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fix(core): use self._code for NVVM pointer so bytearray input compiles
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test(core): regression test for Program(bytearray, 'nvvm') input
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test(core): integration tests for Program.compile(cache=...)
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docs(core): note Program.compile(cache=...) in api reference
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style(core): silence ruff ARG005 on unused lambda args in cache tests
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fix(core): move cache-wrapper compile seam to module level for monkeypatching
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fix(core.utils): drop foreign entries table when schema_meta is absent
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fix(core.utils): treat empty schema_meta as unknown-version for entries rebuild
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test(core): use local ProgramOptions for cache-key derivation (Program._options is C-level)
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style(core.utils): apply ruff format to _program_cache.py
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fix(core.utils): reject bytearray in NVRTC name_expressions cache keys
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