Fix fabro logs --pretty wrapping past terminal edge on assistant messages

Markdown was rendered at full terminal width then indented, pushing lines
past the right edge. Now wraps to terminal_width minus indent first.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/crates/fabro-util/src/terminal.rs

@@ -48,6 +48,25 @@ impl Styles {
         termimad::term_text(text).to_string()
     }
 
+    /// Render Markdown wrapped to a specific width (in columns).
+    /// Returns plain text when color is disabled.
+    #[must_use]
+    pub fn render_markdown_width(&self, text: &str, width: usize) -> String {
+        if !self.use_color {
+            return text.to_string();
+        }
+        termimad::MadSkin::default()
+            .text(text, Some(width))
+            .to_string()
+    }
+
+    /// Return the terminal width in columns, or 80 if it cannot be detected.
+    #[must_use]
+    pub fn terminal_width() -> usize {
+        let (w, _) = termimad::terminal_size();
+        w as usize
+    }
+
     /// Create styles based on whether stderr is a TTY.
     /// Respects `NO_COLOR` environment variable.
     #[must_use]

lib/crates/fabro-workflows/src/cli/logs.rs

@@ -294,7 +294,9 @@ pub fn format_event_pretty(line: &str, styles: &fabro_util::terminal::Styles) ->
                 styles.dim.apply_to(model),
             );
             let indent = "           ";
-            let rendered = styles.render_markdown(text);
+            let term_width = fabro_util::terminal::Styles::terminal_width();
+            let wrap_width = term_width.saturating_sub(indent.len());
+            let rendered = styles.render_markdown_width(text, wrap_width);
             let body: String = rendered
                 .lines()
                 .map(|l| format!("{indent}{l}"))