style: reduce TUI minimum width from 91 to 76 columns

Shrink form width from 55 to 45 chars (content fits comfortably)
and preview minimum from 30 to 25 chars. Both panels now show
at 76+ columns (was 91). Preview hides below 76 columns.

Author: dangrondahl

internal/policywizard/model.go

@@ -10,7 +10,7 @@ import (
 	"github.com/kosli-dev/cli/internal/policy"
 )
 
-const formWidth = 55
+const formWidth = 45
 
 // fetchDoneMsg is sent when the async API fetch completes.
 type fetchDoneMsg struct {
@@ -151,7 +151,7 @@ func (m Model) View() string {
 	fw := formWidth
 	available := m.width - s.base.GetHorizontalFrameSize()
 	pw := available - fw - 2
-	if pw < 30 {
+	if pw < 25 {
 		pw = 0
 	}