v0.56.0

Added

• tilebox-datasets: Added dataset field annotations for source JSON pointers, queryable fields, JSON Schema references,
  and semantic roles, including STAC mappings for well-known dataset fields.

Changed

• tilebox-workflows: Reduced import-time overhead for release runners by lazily loading optional heavy dependencies
  such as datasets, pandas, cloud SDKs, notebook widgets, and runtime/observability modules until they are needed.
• tilebox-datasets: Reduced import-time overhead by lazily exporting the root and async client APIs and deferring
  pandas/xarray imports in time interval parsing until parsing requires them.
• tilebox-storage: Reduced startup overhead by lazily exporting sync storage clients and deferring geospatial,
  notebook, object-store, cloud SDK, HTTP, and progress-display dependencies until storage operations require them.

Fixed

• tilebox-workflows: Allow task execute() methods to use a -> None return annotation when postponed annotation
  evaluation is enabled.
• tilebox-datasets and tilebox-workflows: Generate validation-blind protobuf messages without vendoring
  buf.validate, avoiding duplicate descriptor conflicts when applications use their own generated validation rules.