An assistant turn is now ONE ordered parts[] (text/reasoning/tool) instead of a
flat string, so tool calls render INLINE between text blocks rather than dumped
as separate rows below (spec §7 — the "dump-below" bug opencode's sync-v2 avoids).
- logic/store.ts: Part discriminated union + reducer rework. message.delta
appends to the open text part (or opens one); tool.start pushes a running tool
part; tool.complete matches by tool_id and updates that part IN PLACE (state,
envelope-stripped resultText, summary, error, lineCount); reasoning.delta
accumulates a reasoning part. User/system rows stay flat text; settled/resumed
assistant rows fall back to text.
- logic/toolOutput.ts: ported pure helpers — stripToolEnvelope (unwrap
{output,exit_code}, append [exit N]/[error] suffix) + collapseToolOutput +
truncate.
- view/messageLine.tsx: <For>+<Switch> dispatch by part.type with stable id keys.
- view/toolPart.tsx: two-tier render — inline one-liner (≤1 output line) or a
capped left-bar block (TOOL_MAX_LINES, "… +N more", click-to-expand) keyed off
the theme; reactive width via useTerminalDimensions.
Verified: bun run check green (23 tests / 5 files / 64 expects) — store
interleave/in-place/reasoning, a frame test asserting the tool renders inline +
envelope stripped, and toolOutput unit tests. Live tmux: a terminal-tool prompt
rendered "⚡ terminal" with its alpha/beta output inline between the assistant's
text parts; Ctrl+C clean, no orphan. Smoke P2b + parity matrix updated. Native
<markdown> for text parts is the next slice (2b-ii).
59fbc05031