72cfd8191a
Fix React hydration mismatch and clean up stale service workers
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- Pin formatDate to timeZone: 'UTC' so server and client produce
identical date strings (fixes React error #418 )
- Add one-shot service worker unregistration since SpiceBook doesn't
use one — clears phantom registrations from browser cache
2026-02-20 16:07:42 -07:00
c9116c5d86
Add SEO meta tags, OG image generation, and astro-icon integration
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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.
2026-02-14 13:15:52 -07:00
3f3ca58521
Add embeddable notebook viewer for Mims library integration
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New /embed/[id] route renders notebooks in a read-only, chromeless
layout for iframe embedding. Supports light/dark themes via URL
param and postMessage from the parent window.
- EmbedLayout: minimal HTML shell, no navbar/footer
- EmbedViewer: fetches notebook, runs simulations, syncs theme
- EmbedCell: read-only markdown + SPICE cell renderer
- SpiceEditor: added readOnly prop (EditorState.readOnly + editable.of)
- embed-theme.css: light mode CSS variable overrides
- Astro middleware: CSP frame-ancestors on /embed/* routes
- Backend: env-configurable CORS origins, CSP header middleware
Security hardening from review:
- postMessage origin validation (ALLOWED_MESSAGE_ORIGINS)
- markdown XSS fix: isSafeUrl() blocks javascript: URIs in links
- escapeHtml now covers single quotes
- Notebook ID validated against /^[a-zA-Z0-9_-]+$/
- Theme param normalized at Astro boundary
- classList.remove/add instead of className stomping
2026-02-13 15:46:37 -07:00
8abd7719bf
Initial SpiceBook MVP: notebook interface for circuit simulation
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Phase 1 implementation with ngspice backend and Astro/React frontend:
Backend (FastAPI):
- ngspice subprocess engine with custom .raw file parser
- Notebook CRUD with .spicebook JSON format (filesystem storage)
- Simulation endpoints (standalone + cell-in-notebook)
- SVG waveform export endpoint
- 18 REST API routes, 5 passing tests
Frontend (Astro 5 + React 19):
- Notebook editor as React island with Zustand state management
- CodeMirror 6 with custom SPICE language mode (syntax highlighting
for dot commands, components, engineering notation, comments)
- uPlot waveform viewer with transient and AC/Bode plot modes
- Markdown cells with edit/preview toggle
- Notebook list with card grid UI
- Dark theme, Tailwind CSS 4, Lucide icons
Infrastructure:
- Docker Compose with dev/prod targets
- Caddy-based frontend prod serving
- 3 example notebooks (RC filter, voltage divider, CE amplifier)
2026-02-13 01:44:38 -07:00
