Streaming markdown at thousands of tokens a second. Zero layout shift.

Most chat interfaces re-parse the whole message on every token, which is why they flicker and why long conversations get slow. ORACLE parses incrementally: block boundaries are detected as the stream arrives, only the open block is ever touched, and inline formatting is applied the moment its closing delimiter shows up. Finished blocks are never revisited.

Code blocks are highlighted by a tokenizer that carries its state (inside a string, inside a comment) across chunks, so it only ever looks at the new characters. The transcript is virtualized: messages outside the viewport are swapped for fixed-height spacers, so the DOM stays small no matter how long the session runs. Scrolling anchors to the bottom until you scroll up, and never jumps.

The panel at the top measures the real thing: tokens per second delivered, DOM operations per frame, and cumulative layout shift, which stays at zero.