tui: drop redundant leading blanks in live tool overlay

renderToolCall used to prepend a blank line at the top of each of
its three branches (streaming-with-body, finished-no-result,
finished-with-result) so the live box wouldn't sit flush against
the prose / previous tool block above it. That made sense before
each tool result owned its own complete box \u2014 back then the
assistant message also injected a blank before its embedded top
edge, and the two paths matched.

After the box-ownership refactor the transcript path no longer
emits a leading blank (Build()'s natural inter-message separator
provides one), but renderToolCall still did, so a streaming tool
sat two blank rows below the previous content while the same
call, once finalised, sat only one. The visible "snap tighter"
when streaming ended was the doubled gap collapsing.

Drop the three leading blanks. Build()'s inter-message blank is
the single source of vertical spacing now, so streaming and
finalised forms have identical gaps.

commit: 37eb752cb29f784f57e95f0e1afa20f10dc16ab9
author: patriceckhart · 5mo ago · 2026-04-27 15:24 UTC
parent: 48d22c4
signature: unsigned
refs: tag: v0.1.30

1 file · +6 -6

M internal/tui/view.go +6 -6


@@ -598,9 +598,12 @@ func (v *View) renderToolCall(tc ToolCallView, width int) []string {
598	598		}
599	599		label := tc.Name + " " + arg
600	600
601		-	// Every box is preceded by a blank line so it doesn't sit
602		-	// flush against the prose / previous tool block above it.
603		-	// Matches the transcript-side framing in renderMessage.
	601	+	// No leading blank: Build()'s inter-message separator already
	602	+	// places one blank row between the previous transcript content
	603	+	// and the live overlay, matching the spacing the same call has
	604	+	// once it finalises into a transcript box. Adding another blank
	605	+	// here would double the gap during streaming and visibly tighten
	606	+	// when the overlay disappears.
604	607
605	608		// Streaming body (write/edit): top edge with the label, body
606	609		// rows wrapped with vertical edges, bottom edge to close the

@@ -608,7 +611,6 @@ func (v *View) renderToolCall(tc ToolCallView, width int) []string {
608	611		// the same frame the transcript renders the closed box, so
609	612		// there's no visible hop.
610	613		if tc.Streaming && tc.Result == "" {
611		-	lines = append(lines, "")
612	614		lines = append(lines, toolBoxTop(v.Theme, label, width))
613	615		lines = append(lines, toolBoxSide(v.Theme, "", width))
614	616		if body := v.renderLiveToolBody(tc, width); len(body) > 0 {

@@ -623,7 +625,6 @@ func (v *View) renderToolCall(tc ToolCallView, width int) []string {
623	625		// directly closed by the bottom. Avoids a blank interior row
624	626		// for no-output tools.
625	627		if tc.Result == "" {
626		-	lines = append(lines, "")
627	628		lines = append(lines, toolBoxTop(v.Theme, label, width))
628	629		lines = append(lines, toolBoxBottom(v.Theme, width))
629	630		return lines

@@ -634,7 +635,6 @@ func (v *View) renderToolCall(tc ToolCallView, width int) []string {
634	635		// vertical edges; bottom edge closes the box. Blank interior
635	636		// rows after the top and before the bottom give the body a bit
636	637		// of breathing room from the corners.
637		-	lines = append(lines, "")
638	638		lines = append(lines, toolBoxTop(v.Theme, label, width))
639	639		lines = append(lines, toolBoxSide(v.Theme, "", width))
640	640		color := v.Theme.ToolOut

 	}
 	label := tc.Name + " " + arg
-	// Every box is preceded by a blank line so it doesn't sit
+	// No leading blank: Build()'s inter-message separator already
-	// flush against the prose / previous tool block above it.
+	// places one blank row between the previous transcript content
-	// Matches the transcript-side framing in renderMessage.
+	// and the live overlay, matching the spacing the same call has
+	// once it finalises into a transcript box. Adding another blank
+	// here would double the gap during streaming and visibly tighten
+	// when the overlay disappears.
 	// Streaming body (write/edit): top edge with the label, body
 	// rows wrapped with vertical edges, bottom edge to close the
 	// the same frame the transcript renders the closed box, so
 	// there's no visible hop.
 	if tc.Streaming && tc.Result == "" {
-		lines = append(lines, "")
 		lines = append(lines, toolBoxTop(v.Theme, label, width))
 		lines = append(lines, toolBoxSide(v.Theme, "", width))
 		if body := v.renderLiveToolBody(tc, width); len(body) > 0 {
 	// directly closed by the bottom. Avoids a blank interior row
 	// for no-output tools.
 	if tc.Result == "" {
-		lines = append(lines, "")
 		lines = append(lines, toolBoxTop(v.Theme, label, width))
 		lines = append(lines, toolBoxBottom(v.Theme, width))
 		return lines
 	// vertical edges; bottom edge closes the box. Blank interior
 	// rows after the top and before the bottom give the body a bit
 	// of breathing room from the corners.
-	lines = append(lines, "")
 	lines = append(lines, toolBoxTop(v.Theme, label, width))
 	lines = append(lines, toolBoxSide(v.Theme, "", width))
 	color := v.Theme.ToolOut