Patterns / Agent

Transcript

Expand apps/gallery/src/patterns/transcript.rs

scroll::follow pins it to the newest line, widgets::Takeover runs each turn's work zone, widgets::step_row draws the tool calls, and markdown::markdown renders the answers — which is why this page could not be honest until that crate existed.

The screen it was ported from is 943 lines and produced no library code. That was the prediction, and the measurement is that its three reducers are all standard library:

• Turns — a question and the answer it drew — are chunk_by: start a chunk at every question.
• The zone split is rposition. The answer is the prose after the last tool call; everything before it is interim. That one sentence is the entire rule, and it is what stops a model's thinking-out-loud from being presented as its reply.
• A run of adjacent tool calls is chunk_by again, and the Verb · N fold inside it is the same chunk_by the tool calls page uses.

What is left of the 943 lines is IPC, project lookups, sticky-scroll measurement and error parsing — an app's job, all of it.

The beat type is page-local and deliberately not a library type: step_row takes strings, so bezel never learns what a tool call is.

The source is at apps/gallery/src/patterns/transcript.rs. Copy the file.