Notebook cards now show schematic SVG thumbnails (on Mims green background)
and description snippets extracted from the first markdown cell. The backend
extracts both from already-loaded notebook data at zero additional I/O cost.
New ResistorColorGuide section between the pipeline strip and featured
notebooks explains the 4-band color code with an annotated zigzag diagram
and reference table using the same BAND_HEX colors from the schematic renderer.
Also switches docker-compose.dev.yml from direct port mapping to Caddy labels,
matching the production routing pattern and avoiding port conflicts.
Astro scopes <style> block imports to the authoring component.
Since OscilloscopeDisplay.astro is a child of index.astro, the
scoped selectors didn't match. Move the CSS import into the
component itself with is:global.
Port the OscilloscopeDisplay from mcltspice docs — Web Audio API
renders stereo audio as Lissajous patterns on a canvas with teal
phosphor persistence. 6 tracks from Jerobeam Fenderson, volume
knob, skin switcher (465/545A), and the Outer Limits easter egg.
Audio: CC BY-NC-SA 4.0, oscilloscopemusic.com
Visual: Nick Watton (codepen.io/2Mogs), rsp2k
Restructure the homepage to lead with visuals instead of text:
- Hero: split layout with animated Tektronix 465 oscilloscope showing
RC step response (CSS+SVG, zero JS) that links to the notebook
- Pipeline strip: 3-step Write → Simulate → Visualize with code/terminal
previews and inline waveform SVG
- Featured notebooks: 3 curated circuits (RC, 555, common emitter) with
pre-rendered waveform thumbnails
- Gallery cards: decorative graticule header strip, color-coded by engine
- Footer: updated copy with clearer call to action
All new sections are server-rendered Astro components. Total new client
JavaScript: zero bytes.
SSR the notebook list in Astro frontmatter (eliminating the client-side
loading spinner). Add hero section with oscilloscope graticule background,
4-column feature highlights, and a React island gallery with category
filter pills, tag search, and grouped/flat view modes.
Wire astro-seo-meta for OG, Twitter Card, and canonical tags on all
pages. Add Satori + resvg dynamic OG image endpoints at /og/[id].png
with branded dark-theme cards. Replace inline SVGs with zero-JS
astro-icon rendering. SSR fetches use 5s AbortController timeout and
shared ID validation across all dynamic routes.
Switch from query-param routing (/notebook/?id=X) to Astro dynamic
routes (/notebook/rc-lowpass-filter). Add @astrojs/node adapter with
output: 'server' for on-demand route handling.
Fix formatEng/formatAxisValue crash on null values passed by uPlot
axis tick formatters. Add CORS origin for port 4322.
