Preserve reverse dictionary iterator fixes and the 3.15 frame imports. Keep library refreshes separate pending the runtime dependency sequencing decision.

Assisted-by: OpenAI Codex:model identifier unavailable

Index conditional test classes and methods without crossing namespaces, reject ambiguous targets, and preserve inherited override indentation. Add hash-pinned whole-test copying that verifies execution context and exact source bytes, with focused Python fixtures.

Assisted-by: OpenAI Codex:model identifier unavailable

Import exact-final copy.py with update_lib; defer Mapping ABC registration to the later library stage. Generate only proven marker corrections, retain observed debug recursion-limit expected failures, and copy the complete canonical builtin-doc discovery test using hash-pinned update_lib copy-test.

Assisted-by: OpenAI Codex:model identifier unavailable

Reject differing decorator source blocks even when their ASTs match. Cover inline and multiline marker comments, guarded async methods, and CLI no-write behavior.

Assisted-by: OpenAI Codex:model identifier unavailable

Keep descriptor acquisition and export retention under the bytearray read lock, and recheck exports after acquiring a resize lock. Guard initializer and sequence deletion writes, preserve zero-index initialization callbacks, and match RawIOBase.read buffer ownership without bypassing export checks.

Add bounded Python export-lifetime and concurrent decode/memoryview regression coverage.

Assisted-by: OpenAI Codex:model identifier unavailable

Share exact-TypeError rewriting between dict and frozendict without attaching a cause. Propagate string and repr callback failures using final BaseException argument formatting, leaving global diagnostic behavior unchanged. Add bounded Python coverage for context, identity, and formatting failures.

Assisted-by: OpenAI Codex:model identifier unavailable

Reset initializer storage before zero-count callbacks and returns. Validate integer deletion indices with a nonblocking snapshot before export rejection where possible, then revalidate under the resize guard. Preserve fast export rejection when contended to avoid codec callback deadlocks.

Add Python regressions for exported-empty rejection, initializer capacity release, callback ordering, and ordinary deletion error precedence.

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Acquire both operand exports before borrowing their bytes and release them in CPython order. Cover reentrant initialization, mutable callbacks and export cleanup through public concatenation APIs.

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Keep operation-specific export and release ordering for comparisons, searches, affix tuples and translation. Resolve padding arguments before borrowing the receiver, and retain buffer owners through computation without holding bytearray locks across Python callbacks.

Add bounded Python regressions for callback mutation, reentrant initialization, lazy affixes, subclass protocols and ordered cleanup.

Assisted-by: OpenAI Codex:model identifier unavailable

Preserve all existing regression bodies and coverage while following the requested snippet organization.

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Preserve option validation and initial export rejection, then avoid a redundant resize guard and storage swap when no source was provided. Keep zero-count callback behavior and all existing regressions.

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Combine the reviewed mapping prerequisite and bytearray buffer prerequisite used by compiler candidate 2759621. This branch is a temporary review base, not a mainline merge.

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Source-only integration checkpoint; new validation remains pending.

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Integrate verified source-less initialization fix 108171d and its published ancestors. No separate comparison optimization is included. Source-only integration checkpoint; new validation remains pending.

Assisted-by: OpenAI Codex:model identifier unavailable