Changes in version 0.1.0                        

Initial release.

Parsing and validation

  - parse_pipeline() parses any valid gdal vector pipeline command line:
    step splitting (!), nested pipelines ([ ... ], --tee-pipeline),
    flag/value/positional/short argument forms, quoting, and @file
    arguments.
  - read_gdalg() accepts raw pipeline strings, GDALG (.gdalg.json)
    files, pipeline text files, and pasted multiline bash / PowerShell
    scripts (continuations, heredocs/here-strings, and PowerShell \"
    quoting are normalized automatically). parse_script() /
    read_script() handle explicit script input.
  - Pipeline-level options (--config, --progress) parse into
    pipeline_options, including when the first step follows them without
    a ! separator.
  - lint_pipeline() / validate_pipeline() check pipelines against GDAL's
    own --json-usage contract: unknown steps/arguments, missing required
    arguments, boolean/value mismatches, invalid enum choices, and
    mutually exclusive argument groups (mutual_exclusion_group).
  - gdalviz_contract() loads the bundled contract snapshot (steps,
    argument metadata, and pipeline-level arguments);
    gdalviz_refresh_contract() regenerates the snapshot from the
    installed GDAL CLI.

Graph model

  - pipeline_graph() builds a renderer-agnostic dataflow graph: semantic
    categories, plain-language descriptions, structured arguments, docs
    URLs, and feature-stream state propagation (CRS, geometry type,
    fields, validity, ordering) with "what changed" edge badges.
  - Runtime configuration renders as a dedicated node feeding the
    source; GDALG pipelines with an omitted write gain an implicit
    streamed sink; runs of 3+ consecutive identical steps merge into one
    stacked node (merge_repeated = TRUE).

Rendering

  - render_reactflow(): interactive React Flow htmlwidget (bundled, no
    node toolchain needed) with card-style nodes, dagre layout, minimap,
    controls, category legend, light/dark themes, and a click-to-open
    inspector showing step code, arguments, stream state, and GDAL docs
    links. Shiny bindings via pipelineFlowOutput() /
    renderPipelineFlow().
  - render_diagrammer() / pipeline_dot(): static-capable Graphviz path.
  - render_g6(): AntV G6 alternative renderer.

Serialization

  - render_command_line() round-trips pipelines to canonical GDALG
    command lines; render_script() formats bash / PowerShell scripts
    (optionally reflowing SQL into heredocs); as_gdalg() / write_gdalg()
    emit GDALG JSON specifications.