refactor: refactor compile-time schema declaration based on typed-arrow

[ethe]

Phase 1 of #468

• Typed adapters in place for compile-time records

  • #[tonbo::typed::record] is the single annotation; macro injects #[derive(typed_arrow::Record)] and encodes PK user indices under tonbo.primary_key_user_indices.
  • Legacy #[derive(tonbo_macros::Record)] path has been removed to simplify the surface (no backward-compat required for this branch).
  • Core adapters implemented: TonboTypedSchema<R, K>, TonboTypedBuilders<R>, and TonboTypedArrays<R, K>.

• Semantics parity for tombstones and projection

  • Tombstone rows preserve primary key value(s) in PK column(s) while _null = true indicates deletion.
  • Column projection applied correctly at read and in builder finish() paths, honoring USER_COLUMN_OFFSET.
  • Parquet metadata written: tonbo.primary_key_user_indices and tonbo.sorting_columns (order: _ts desc, PK asc, nulls first).

• Accounting and tests

  • written_size now includes _null bits, _ts values, and accumulated user payload bytes.
  • Re-enabled/adjusted tests for projection and size accounting; all tests green locally for the current workspace.

• Safety and hygiene

  • Replaced static mut + OnceCell patterns with safe OnceCell statics; removed several clippy warnings and unused macro helpers.
  • Remaining unsafes (e.g., a transmute used to shape record refs) are earmarked for removal in a follow-up.

• What’s next

  • Phase 3: Implement the runtime adapter on top of typed-arrow-dyn, replacing custom dynamic arrays while preserving Tonbo sentinels, PK rewrite on tombstones, sorting, and projection.
  • Composite PKs: extend adapters and macro metadata to support multi-column primary keys end-to-end (PK paths, sorting, rewrite).
  • Remove remaining unsafe in ref access paths by tightening lifetimes and using typed-arrow query helpers.
  • Add Parquet/DataFusion conformance tests for sorting and pushdown, and microbenches to validate perf parity.

[codecov]

Codecov Report

❌ Patch coverage is 77.45840% with 149 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/record/typed.rs	76.11%	91 Missing ⚠️
tonbo_macros/src/typed_codegen.rs	83.22%	26 Missing ⚠️
tonbo_macros/src/data_type.rs	11.11%	24 Missing ⚠️
tonbo_macros/src/lib.rs	88.88%	8 Missing ⚠️

📢 Thoughts on this report? Let us know!

[123789456ye]

Should be removed

[crwen]

Is this rewrite necessary? IMO, we don't need to care about the actual data if it is null.