ZSTD_initStaticCDict previously resolved automatic row matching and computed the
minimum workspace in C before handing the result to the Rust construction
orchestrator. That left the public static-CDict sizing branch split from the
Rust validation and callback failure policy.
Make the Rust projection carry dictionary size, load method, compression
parameters, and the C-owned layout sizing inputs. Rust now resolves automatic
row matching, computes the dedicated-search workspace requirement, validates
workspace capacity, and passes the resolved mode into the initializer while
preserving create/reserve/move/init order. C retains opaque private cwksp and
CDict operations, allocator/layout behavior, and dictionary-content loading.
Add focused tests for computed sizing policy, capacity boundaries, callback
order, reservation and initialization failures, and null or unaligned
workspaces.
Test Plan:
- `rustfmt --edition 2021 --check rust/src/zstd_compress_dictionary.rs` -- passed
- GCC `-fsyntax-only` checks with multithreaded, non-multithreaded,
`ZSTD_DISABLE_ASM=1`, and `ZSTD_ADDRESS_SANITIZER=1` configurations -- passed
- Clang `-fsyntax-only` check with `ZSTD_MULTITHREAD` -- passed
- `git diff --check` and `git diff --cached --check` -- passed
- Cargo, make, native builds, and large tests were not run per task constraints
ddidderr
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