feat: a status pane, like lazygit's: version, updates, accounts, files and links

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/panes/fields.go

@@ -19,10 +19,13 @@ type Fields struct {
 }
 
 // Field is a row: a value under a label. Info rows (loading, errors)
-// can't be copied; Err ones are errors.
+// can't be copied; Err ones are errors. A row can also be opened: URL in
+// the browser (o), Path in the editor (e), or Provider signed in to (L).
 type Field struct {
 	Label, Value string
 	Info, Err    bool
+
+	URL, Path, Provider string
 }
 
 func NewFields() Fields {