feat: Migrate mockup assets (SVG references + generated PNGs).

[nedseb]

Description

Move the mockup assets from micropython-steami-tutorials.

Source

micropython-steami-tutorials/docs/mockups/ — 15 SVG references + generated PNGs + diff images + README gallery

Tasks

• Copy docs/mockups/ directory
• Verify all SVG files render correctly with cairosvg
• Regenerate all PNGs with python validate.py to confirm paths work
• Regenerate gallery README with python generate_report.py

Contents

Per tutorial:

• NN_name.svg — hand-drawn SVG reference
• NN_name_sim.png — simulator output (scale=3)
• NN_name_ref.png — rasterized SVG
• NN_name_diff.png — amplified difference (5x)

Dependencies

• feat: Migrate PC validation pipeline (validate.py). #4 — validate.py must be migrated
• feat: Migrate gallery report generator. #6 — generate_report.py must be migrated

Parent

• feat: Scaffold repo and migrate simulation/validation tools. #1 — Migration umbrella issue