[timkpaine]

• add Rust and Python Arrow interchange planning with exact, projection, compatible, and coerce schema policies
• add Arrow IPC, Parquet, CSV, and JSONL codecs with bounded lazy streaming and cancellation
• organize public documentation as tutorial, how-to, explanation, and API reference
• build an abi3 Python extension and exercise the Rust core in project checks

[github-actions]

Test Results

31 tests  +30   31 ✅ +30   0s ⏱️ ±0s
 1 suites ± 0    0 💤 ± 0 
 1 files   ± 0    0 ❌ ± 0 

Results for commit 1e550b2. ± Comparison against base commit b06643c.

This pull request removes 1 and adds 31 tests. Note that renamed tests count towards both.

fsspec_data.tests.test_all ‑ test_all

fsspec_data.tests.test_all ‑ test_arrow_codec_declares_capabilities
fsspec_data.tests.test_all ‑ test_arrow_codec_requires_schema_for_empty_stream
fsspec_data.tests.test_all ‑ test_arrow_ipc_round_trip_preserves_empty_stream_schema
fsspec_data.tests.test_all ‑ test_arrow_ipc_round_trip_preserves_schema_and_batch_boundaries
fsspec_data.tests.test_all ‑ test_coerce_applies_runtime_checked_cast
fsspec_data.tests.test_all ‑ test_coerce_checks_nullable_to_required_at_runtime
fsspec_data.tests.test_all ‑ test_coerce_rejects_unregistered_cast
fsspec_data.tests.test_all ‑ test_compatible_rejects_lossy_cast
fsspec_data.tests.test_all ‑ test_compatible_widens_type_and_nullability
fsspec_data.tests.test_all ‑ test_exact_rejects_nullability_widening
…

[codecov]

Codecov Report

❌ Patch coverage is 97.89157% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.08%. Comparing base (b06643c) to head (1e550b2).

Files with missing lines	Patch %	Lines
fsspec_data/interchange.py	95.00%	4 Missing and 3 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #45       +/-   ##
===========================================
+ Coverage   16.66%   91.08%   +74.41%     
===========================================
  Files           8        9        +1     
  Lines          30      359      +329     
  Branches        2       12       +10     
===========================================
+ Hits            5      327      +322     
- Misses         25       29        +4     
- Partials        0        3        +3     

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