Make line wrapping adapt to the terminal width

CHANGELOG.md

@@ -37,3 +37,9 @@ Initial implementation.
   run dies mid-flight.
 - The run summary (artifacts, journal path, harness error, final message)
   prints after the interactive monitor exits, not only in plain mode.
+- Line wrapping adapts to the terminal width everywhere. Monitor transcript
+  lines wrap (ANSI-aware) instead of truncating, and re-flow on resize;
+  the header and status bar clip to fit one line at any width; the report
+  browser rebuilds its table columns and re-renders its markdown at the
+  current width; plain (non-TTY) output and summary lines wrap to the
+  terminal width instead of a fixed 200 characters.

cmd/root.go

@@ -8,6 +8,7 @@ import (
 	"github.com/spf13/cobra"
 
 	"github.com/traust-security/traust-cli/internal/theme"
+	"github.com/traust-security/traust-cli/internal/tui"
 )
 
 // version is set at build time via -ldflags.
@@ -59,10 +60,15 @@ func section(title string) {
 	fmt.Println(theme.Default().Header.Render(title))
 }
 
-// kv prints a label/value line.
+// kv prints a label/value line, wrapping the value to the terminal width.
 func kv(label, value string) {
 	styles := theme.Default()
-	fmt.Printf("  %s %s\n", styles.Label.Render(pad(label)), styles.Value.Render(value))
+	const lead = 18 // "  " + 14-wide label + " "
+	width := tui.TerminalWidth() - lead
+	if width < 20 {
+		width = 20
+	}
+	fmt.Printf("  %s %s\n", styles.Label.Render(pad(label)), tui.Wrap(value, width))
 }
 
 func pad(s string) string {

cmd/run.go

@@ -216,7 +216,7 @@ func printRunSummary(res *runner.RunResult) {
 	if res.ResultText != "" {
 		fmt.Println()
 		fmt.Println(styles.Muted.Render("final message:"))
-		fmt.Println(indent(res.ResultText, "  "))
+		fmt.Println(indent(tui.Wrap(res.ResultText, tui.TerminalWidth()-4), "  "))
 	}
 }
 
@@ -240,35 +240,27 @@ func (plainSink) Progress(msg string) {
 	if strings.Contains(msg, "failed") || strings.Contains(msg, "refused") {
 		style = styles.Err
 	}
-	fmt.Println(style.Render("› " + msg))
+	fmt.Println(tui.Wrap(style.Render("› "+msg), tui.TerminalWidth()))
 }
 
 func (plainSink) Event(ev harness.Event) {
 	styles := theme.Default()
 	switch ev.Kind {
 	case harness.EventText:
-		fmt.Println(truncatePlain(ev.Text))
+		fmt.Println(tui.Wrap(ev.Text, tui.TerminalWidth()))
 	case harness.EventToolCall:
 		fmt.Println(styles.Accent.Render("→ " + ev.Tool))
 	case harness.EventResult:
 		// Result text is printed in the summary.
 	case harness.EventError:
-		fmt.Println(styles.Err.Render("✗ " + ev.Text))
+		fmt.Println(tui.Wrap(styles.Err.Render("✗ "+ev.Text), tui.TerminalWidth()))
 	}
 }
 
 func (plainSink) Raw(line string) {
 	if strings.TrimSpace(line) != "" {
-		fmt.Println(theme.Default().Muted.Render("  " + truncatePlain(line)))
+		fmt.Println(tui.Wrap(theme.Default().Muted.Render("  "+line), tui.TerminalWidth()))
 	}
 }
 
 func (plainSink) Done() {}
-
-func truncatePlain(s string) string {
-	s = strings.ReplaceAll(strings.ReplaceAll(s, "\r", ""), "\n", " ")
-	if len(s) > 200 {
-		return s[:199] + "…"
-	}
-	return s
-}

go.mod

@@ -8,8 +8,10 @@ require (
 	github.com/charmbracelet/glamour v1.0.0
 	github.com/charmbracelet/huh v1.0.0
 	github.com/charmbracelet/lipgloss v1.1.1-0.20250404203927-76690c660834
+	github.com/charmbracelet/x/ansi v0.11.6
 	github.com/spf13/cobra v1.10.2
 	github.com/traust-security/traust-sdk/go v0.22.1-0.20261014220305-ef1e2d991492
+	golang.org/x/term v0.36.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
@@ -20,7 +22,6 @@ require (
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/catppuccin/go v0.3.0 // indirect
 	github.com/charmbracelet/colorprofile v0.4.1 // indirect
-	github.com/charmbracelet/x/ansi v0.11.6 // indirect
 	github.com/charmbracelet/x/cellbuf v0.0.15 // indirect
 	github.com/charmbracelet/x/exp/slice v0.0.0-20250327172914-2fdc97757edf // indirect
 	github.com/charmbracelet/x/exp/strings v0.0.0-20240722160745-212f7b056ed0 // indirect
@@ -52,6 +53,5 @@ require (
 	github.com/yuin/goldmark-emoji v1.0.6 // indirect
 	golang.org/x/net v0.38.0 // indirect
 	golang.org/x/sys v0.47.0 // indirect
-	golang.org/x/term v0.36.0 // indirect
 	golang.org/x/text v0.39.0 // indirect
 )

internal/tui/monitor.go

@@ -138,7 +138,7 @@ func (m monitorModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		case itemEvent:
 			m.applyEvent(msg.ev)
 		case itemRaw:
-			m.pushLine(m.styles.Muted.Render("  " + truncateLine(msg.text, m.width-4)))
+			m.pushLine(m.styles.Muted.Render("  " + msg.text))
 		case itemProgress:
 			style := m.styles.Accent
 			if strings.HasPrefix(msg.text, "warning:") || strings.HasPrefix(msg.text, "note:") {
@@ -167,6 +167,7 @@ func (m monitorModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		m.width, m.height = msg.Width, msg.Height
 		m.viewport.Width = msg.Width - 2
 		m.viewport.Height = msg.Height - 8
+		m.rebuild()
 		return m, nil
 	case tea.KeyMsg:
 		switch msg.String() {
@@ -205,7 +206,7 @@ func (m monitorModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 func (m *monitorModel) applyEvent(ev harness.Event) {
 	switch ev.Kind {
 	case harness.EventText:
-		m.pushLine(truncateLine(ev.Text, m.width-4))
+		m.pushLine(ev.Text)
 	case harness.EventToolCall:
 		m.pushLine(m.styles.Accent.Render("→ " + ev.Tool))
 	case harness.EventUsage:
@@ -214,23 +215,45 @@ func (m *monitorModel) applyEvent(ev harness.Event) {
 		m.tokensIn, m.tokensOut = ev.TokensIn, ev.TokensOut
 		m.cost = ev.CostUSD
 		if ev.Text != "" {
-			m.pushLine(m.styles.OK.Render("✓ " + truncateLine(ev.Text, m.width-4)))
+			m.pushLine(m.styles.OK.Render("✓ " + ev.Text))
 		}
 	case harness.EventError:
 		m.failed = true
-		m.pushLine(m.styles.Err.Render("✗ " + truncateLine(ev.Text, m.width-4)))
+		m.pushLine(m.styles.Err.Render("✗ " + ev.Text))
 	case harness.EventNeedsInput:
 		m.failed = true
 		m.pushLine(m.styles.Err.Render("✗ the skill asked for interactive input — run it interactively in your harness"))
 	}
 }
 
+// pushLine stores a styled line UNWRAPPED and rebuilds the viewport at the
+// current width. Lines are wrapped, never truncated — the transcript stays
+// complete at any terminal size.
 func (m *monitorModel) pushLine(line string) {
-	m.lines = append(m.lines, line)
+	line = strings.ReplaceAll(line, "\r", "")
+	for _, l := range strings.Split(line, "\n") {
+		m.lines = append(m.lines, l)
+	}
 	if len(m.lines) > 1000 {
 		m.lines = m.lines[len(m.lines)-1000:]
 	}
-	m.viewport.SetContent(strings.Join(m.lines, "\n"))
+	m.rebuild()
+}
+
+// rebuild re-wraps every retained line at the current viewport width. This
+// is what makes a terminal resize actually take effect: previously pushed
+// lines re-flow instead of staying clipped to whatever the width was when
+// they arrived.
+func (m *monitorModel) rebuild() {
+	width := m.viewport.Width
+	if width < 4 {
+		width = 4
+	}
+	wrapped := make([]string, 0, len(m.lines))
+	for _, l := range m.lines {
+		wrapped = append(wrapped, Wrap(l, width))
+	}
+	m.viewport.SetContent(strings.Join(wrapped, "\n"))
 	m.viewport.GotoBottom()
 }
 
@@ -249,9 +272,11 @@ func (m monitorModel) View() string {
 		status = m.styles.Warn.Render("aborting…")
 	}
 	title := m.styles.App.Render(" traust ")
-	b.WriteString(lipgloss.JoinHorizontal(lipgloss.Left,
-		title,
-		m.styles.Header.Render(fmt.Sprintf(" %s · %s · %s · %s · %s", m.header.Skill, m.header.Harness, ellipsize(m.header.Model, 40), elapsed, status))))
+	head := m.styles.Header.Render(fmt.Sprintf(" %s · %s · %s · %s · %s", m.header.Skill, m.header.Harness, ellipsize(m.header.Model, 40), elapsed, status))
+	// The header must fit one line at any width: clip after assembly rather
+	// than letting the terminal hard-wrap it into the transcript frame.
+	head = Truncate(head, maxInt(m.width-lipgloss.Width(title), 10), "…")
+	b.WriteString(title + head)
 	b.WriteString("\n\n")
 
 	body := m.viewport.View()
@@ -274,10 +299,13 @@ func (m monitorModel) View() string {
 	}
 	var bar string
 	if m.header.BudgetCap > 0 {
-		bar = m.budgetBar(m.tokensOut, m.header.BudgetCap)
+		// The bar yields its cells to the text on narrow terminals.
+		barWidth := clampInt((m.width-lipgloss.Width(usage))/3, 8, 24)
+		bar = m.budgetBar(m.tokensOut, m.header.BudgetCap, barWidth)
 		usage = usage + "  " + bar
 	}
-	b.WriteString(m.styles.StatusBar.Render(usage))
+	// The status bar style adds one cell of padding on each side.
+	b.WriteString(m.styles.StatusBar.Render(Truncate(usage, maxInt(m.width-2, 20), "")))
 	b.WriteString("\n")
 
 	footer := "ctrl+c×2 abort"
@@ -295,8 +323,10 @@ func (m monitorModel) View() string {
 	return b.String()
 }
 
-func (m monitorModel) budgetBar(out, cap int64) string {
-	width := 24
+func (m monitorModel) budgetBar(out, cap int64, width int) string {
+	if width < 4 {
+		width = 4
+	}
 	ratio := 0.0
 	if cap > 0 {
 		ratio = float64(out) / float64(cap)
@@ -367,14 +397,6 @@ func RunMonitor(header MonitorHeader, cancel func(), runFn func(sink runner.Sink
 	}
 }
 
-func truncateLine(s string, n int) string {
-	s = strings.ReplaceAll(strings.ReplaceAll(s, "\r", ""), "\n", " ")
-	if len(s) > n {
-		return s[:n-1] + "…"
-	}
-	return s
-}
-
 func ellipsize(s string, n int) string {
 	if s == "" {
 		return "(default)"
@@ -385,6 +407,23 @@ func ellipsize(s string, n int) string {
 	return s
 }
 
+func clampInt(v, lo, hi int) int {
+	if v < lo {
+		return lo
+	}
+	if v > hi {
+		return hi
+	}
+	return v
+}
+
+func maxInt(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
 func human(n int64) string {
 	switch {
 	case n >= 1_000_000: