[xtofalex]

Summary

• Schematic.export_svg(path=None, callback=None): the notebook can now get the schematic as SVG (what File > Export Schematic as SVG... saves). New export_svg push → the viewer answers with an svg_exported notification once its schematic shows something (AppState::svgExportRequested). ViewerSession keeps it in svg and calls one-shot callbacks. A pending export is asked again after each root_response, so an export requested before the view rendered isn't lost.
• colab_test.ipynb → getting_started.ipynb, rewritten as a walkthrough around an RGB LED dimmer in SystemVerilog (shared 8-bit counter + 3 PWM channels, ~250 gates). "Trace to Driver" on a channel flop's D pin draws the 8-bit comparator cone across the hierarchy. New SVG export section.
• tinyrocket.ipynb: tinyrocket moved to its own notebook. najaeda holds one design at a time, so with Run all every view showed tinyrocket.
• Bump to 0.1.8.

Test plan

• pytest python/tests: 107 passed, including both notebooks run by nbclient and new export tests
• Native and WASM module builds
• Ran the notebook in JupyterLab with the local bundle: with Run all, the SVG appears under the export cell and the file is written
• RGB design loads with najaeda 0.7.25 (oldest supported) and latest
• reuse lint passes
• The colab job fails until 0.1.8 is on PyPI: the notebook uses the new export_svg API. Expected; it passes after the v0.1.8 tag.

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