maj00r c337866c58 Add v6 node-class markers (Stage 2 foundation for progressive loading) ...

Each top-level node is wrapped in a marker carrying its class (infrastructure vs
visual) and byte span, so the reader can serve or skip a whole node per load pass
without knowing its terminator token. The bake recognizes nodes by the "node"
keyword + type token (map type->terminator confirmed against the deserializers)
and classifies them; the writer buffers a node's entries and emits the marker.
The reader gains a pass selector (all / infrastructure / visual) and skips nodes
not in the pass by advancing past their byte span.

This is the foundation only: the default pass is "all", so loading is identical
to v5 (markers are transparent) -- verified by loading td.scn to the same point.
The eager/visual split is wired up by the upcoming loader/driver integration.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-22 20:09:09 +02:00

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