gerber-toolkit 0.4.4

gerber-toolkit 0.4.4

Version 0.4.4 improves large Gerber image composition, corrects a solder-mask
edge case for via-owned copper, and exposes the shared self-adjusting
computation runtime. The changes are structural and apply to every supported
Gerber project without source-specific rules.

Scalable copper composition

• Large copper operand batches are partitioned into transitive spatial
  components before polygon union, so disjoint artwork no longer accumulates
  through one ever-growing intermediate geometry.
• Bounds discovery preserves source order, treats touching bounds as connected,
  and retains conservative behavior when an operand cannot be classified.
• A bounded sweep-work budget falls back to the established chunked union for
  dense overlap instead of allowing quadratic partition work.
• Final geometry remains normalized through polygon-clipping, including
  closed rings and the library's existing malformed-input behavior.

Via mask semantics

• A copper flash whose area matches a drilled via is marked as via-owned on the
  corresponding surface and cannot open that surface by itself.
• A genuinely larger, opened host pad still exposes a via-in-pad surface.
• Side-specific tenting and authored solder-mask behavior remain unchanged.

Shared incremental runtime

• The root entrypoint re-exports SelfAdjustingComputation from
  circuitjson-toolkit 1.4.1.
• Consumers can retain dependency traces across edits while continuing to use
  the same parser, project, rendering, interaction, and scene contracts.

Verification

• Tests cover transitive overlap partitioning, stable disjoint components,
  large-batch normalization, dense-sweep fallback, malformed geometry,
  via-owned flash masking, and canonical runtime identity.
• Release gates include the complete package suite, formatter check, feature
  preservation audit, benchmark contract, and npm package dry run.