Method splashLines

internal/tui/render.go:273–300

splashLines builds the identity block for tea.Println. Below wordmarkWidth the ASCII art soft-wraps into garbage, so collapse to plain text.

()

		styleDim.Render(strings.Repeat("─", max(m.width-1, 1))),
		m.ta.View(),
		m.renderStatusBar(),
	)
	return strings.Join(pieces, "\n")
}

// noPosixShell: tools.Bash runs every command through /bin/sh, which a native
// Windows host does not have, so every tool call there fails - a new user's
// first turn would be a confusing five-failure streak ending in a nudge. Say
// it once, up front. Computed once at init: splashLines re-runs on every
// resize, and main's pre-TUI screen wipe erases anything printed earlier.
var noPosixShell = func() bool {
	if runtime.GOOS != "windows" {
		return false
	}
	_, err := os.Stat("/bin/sh")
	return err != nil
}()

// posixShellWarning is the one-line splash warning for noPosixShell hosts.
const posixShellWarning = "  ⚠ no POSIX shell: the bash tool needs /bin/sh and will fail every call - run codehamr inside WSL2 or a devcontainer."

// splashLines builds the identity block for tea.Println. Below wordmarkWidth
// the ASCII art soft-wraps into garbage, so collapse to plain text.
func (m Model) splashLines() []string {
	const wordmarkWidth = 70 // cells needed for CODE+HAMR side-by-side
	if m.width >= wordmarkWidth {
		lines := []string{""}
		for i := range splashCode {
			lines = append(lines, "  "+styleDim.Render(splashCode[i])+styleHamr.Render(splashHamr[i]))
		}
		lines = append(lines,