Improve NBT viewer graph selection workflows

[rollrat]

Summary

• fold RS latch feedback SCCs before logic graph extraction so latch NBT examples render
• expose raw/folded world graph views with tag toggles in the NBT viewer
• improve graph minimap, ctrl-wheel zoom, and dependency-cone selection highlighting
• add selected graph and selected NBT dialogs, including support/routed blocks for extracted NBT views

Verification

• cargo test --release
• npm.cmd run build:wasm
• npm.cmd run build
• browser verification on http://localhost:5174/