Add Themed SVG Studio concept demo

[AMDphreak]

The Products catalog now gives Themed SVG Studio a concrete public home while the native editor is being built. The concept keeps the scope honest: semantic theme tokens and bindings change, but SVG geometry does not.

What changed

• add Themed SVG Studio to the Products catalog with its approved product mark
• add an interactive /themed-svg-studio concept route
• demonstrate host, adaptive, and fixed previews, token editing, bindings, diagnostics, and export choices
• prerender the route and generate its GitHub Pages fallback
• record the addition in the site changelog

Screenshots

Verification

• production Vinxi build
• route fallback generation
• desktop and mobile interaction checks
• accessibility snapshot for controls and landmarks
• visual review of the concept route and catalog mark
• git diff --check

[cursor]

Documentation review — Themed SVG Studio concept demo

Solid concept demo with changelog coverage already in place. The implementation matches established patterns (resting-lanczos, stack-advisor): catalog entry, PageTrail, SPA fallback, prerender route, and accessible controls.

What the PR already documents well

• Changelog index + detailed entry (2026-09-09 - themed-svg-studio-site.adoc)
• Clear in-page copy that this is a concept (no geometry editing, no export)
• Product mark with accessibility metadata

Gaps addressed on companion branch

Pushed cursor/documentation-automation-system-090b (based on this branch) with:

Doc	Coverage
explanation/themed-svg-studio.adoc	Define → Bind → Review → Export workflow; host/adaptive/fixed modes; link to @dev-centr/themed-svg site diagrams
site-architecture.adoc	/themed-svg-studio route table row
index.adoc + nav.adoc	Docs map and navigation entry
Changelog cross-links	Index + detail page → maintainer guide
.github/workflows/ci.yml	Assert themed-svg-studio/index.html SPA artifact

Codepaths covered

• src/routes/themed-svg-studio.tsx — concept page
• src/lib/apps-catalog.ts — Products catalog entry
• scripts/spa-fallback.mjs + app.config.ts — GitHub Pages routing
• public/apps/logos/themed-svg-studio.svg — product mark

Suggested merge order

Cherry-pick or merge the doc commit from cursor/documentation-automation-system-090b into this branch before landing, so the Antora guide ships with the demo.

README.adoc already meets org standards (badges, TOC, AsciiDoc); no README change needed for this feature.

  

_{Sent by Cursor Automation: Generate docs}

[cursor]

SPA fallback is wired correctly. Companion branch cursor/documentation-automation-system-090b adds a CI assertion (test -f .output/public/themed-svg-studio/index.html) alongside the existing stack-advisor checks so a future regression cannot drop this route silently.

[cursor]

Changelog detail is accurate. The companion doc branch adds a Documented section cross-linking explanation/themed-svg-studio.adoc (workflow, preview modes, relationship to @dev-centr/themed-svg progressive diagrams) and the site-architecture route entry.