wrap url under OSC 8

Author: davidzhao

cmd/lk/agent_run.go

@@ -295,8 +295,14 @@ func runAgentDev(ctx context.Context, cmd *cli.Command) error {
 				// Delay briefly so the link prints after the agent's own startup
 				// logs rather than getting buried in them.
 				time.AfterFunc(time.Second, func() {
+					// Accent-colored, and a clickable OSC 8 hyperlink on terminals
+					// that support it (gated so the escape never leaks into pipes).
+					label := util.Accented(link)
+					if out.Interactive() {
+						label = util.Hyperlink(link, label)
+					}
 					out.Status("")
-					out.Statusf("Agent console: %s", link)
+					out.Statusf("Agent console: %s", label)
 				})
 			})
 		}

pkg/util/printer.go

@@ -55,6 +55,13 @@ func NewPrinter(out, err io.Writer, quiet bool) *Printer {
 	return &Printer{Out: out, Err: err, Quiet: quiet, interactive: isTerminal(err)}
 }
 
+// Interactive reports whether status output is going to a real terminal, so
+// callers can gate terminal-only escapes (e.g. OSC 8 hyperlinks) and avoid
+// leaking them into piped or redirected output.
+func (p *Printer) Interactive() bool {
+	return p != nil && p.interactive
+}
+
 // isTerminal reports whether w is a terminal-backed *os.File. Non-file writers
 // (bytes.Buffer in tests, pipes) are never terminals.
 func isTerminal(w io.Writer) bool {

pkg/util/theme.go

@@ -167,6 +167,14 @@ func Dimmed(text string) string {
 	return Theme.Focused.Description.Render(text)
 }
 
+// Hyperlink wraps label in an OSC 8 terminal hyperlink pointing at url. Terminals
+// that support OSC 8 render label as a clickable link; others ignore the escape
+// and show label unchanged. Gate calls on an interactive terminal (see
+// Printer.Interactive) so the escape never leaks into piped/redirected output.
+func Hyperlink(url, label string) string {
+	return "\x1b]8;;" + url + "\x1b\\" + label + "\x1b]8;;\x1b\\"
+}
+
 // Confirm is a yes/no select styled by the active theme.
 func Confirm() *huh.Select[bool] {
 	return huh.NewSelect[bool]().