Fix Artifacts History

Session 2026-04-18

Summary: Implemented R1–R3 and R5 (artifact test file). Added ARTIFACTS section to FORGE.md (1,177 words, within budget), rewrote SKILL.md as pointer to per-type references, created 5 per-type reference files (html, svg, markdown, mermaid, react), trashed old Examples.md, ran /update-agents (6 variants updated), added sidebar entries, built successfully. Playwright testing (R4) blocked — need LibreChat login credentials. State changes: R1 complete, R2 complete (2a–2d), R3 complete (3a–3g), R4 blocked (4a, 4b), R5 partial (4c done, 4d unverified).

Session 2026-04-19

Summary: Closed out project. Deleted 3 failed Railway Sandpack Static Server services (from crashed agent + this session). Markdown artifact support requires wildcard DNS + dedicated static bundler + wildcard TLS — cost not justified for a text-rendering artifact type. Erik manually verified HTML, React, SVG, Mermaid artifacts all work. Project marked complete. State changes: 4a–4b skipped, 4d done (manual verification), status → Complete.