v0.2.1

Fixed

• Freestanding wall/fence edge runs and pillar cells now render (they always blocked light; now they're visible — #62, found by an agent dogfooding the MCP server)
• Vocabulary facet defaults are honored: a bare campfire glows at its stdlib light=20ft, and derived words (hearth : campfire) keep their base's glyph and light on both cell and footprint placements; footprint stairs show treads (#64)
• legend: on renders the spec 07 §4 generated legend — terrain swatches, path/barrier styles, feature glyphs from the words actually used (#63)

Added

• @chartdown/mcp — MCP server giving agents the full authoring loop: chartdown_spec (the digest), chartdown_check (fail-loud validation citing spec sections), chartdown_render (PNG image by default via pure-WASM rasterization with a vendored font — no browser, no native binaries; SVG on request), chartdown_uvtt (VTT geometry). ADR 0011 records the runtime-dependency boundary.
• LLM discoverability: the site serves /llms.txt and /llms-full.txt (the spec digest verbatim); @chartdown/core ships digest.md inside the tarball; READMEs signpost the agent bootstrap path.