Replace the tall portrait README ingestion SVG with two landscape
diagrams — "1 · Ingestion" (build the context layer) and "2 · Serving"
(agents query it through MCP) — wired in as transparent 2x PNGs that
read on GitHub light and dark.
Add docs-site/diagram-studio: a static React Flow page with custom
themed nodes and the inlined ktx mascot that renders both diagrams and
exports them to PNG via html-to-image (the diagrams' reproducible
source). Remove the superseded ingestion-flow SVGs.
Bumps font sizes across the in-app React Flow diagram and the README's
SVG so block titles, stage names, body copy, and chip labels are easier
to read. Widens stage cards and updates the SVG layout so every stage
body wraps to two lines, and resizes every badge rect to fit its text
with even 12px padding on both sides (notably the PostgreSQL chip).
Also includes a pre-existing README addition noting that KTX runs with
the user's own LLM keys or a Claude Pro/Max subscription.