ludic.ui: a rule's selector text is interned - {sel} was sel itself (a template of one string hole passes the string through) and lss_rule frees sel, so rules <id> named whatever reused the bytes; smoke.txt's tree order follows the document, and smoke.py runs the transcript

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/ludic.ui/style_rule.ludic

@@ -19,7 +19,7 @@ function lss_rule_add(f: UiFile, decls: UiRule, sel: string, err: []string, line
   let r = new UiRule
   r.keys = decls.keys
   r.vals = decls.vals
-  r.text = `{sel}`                     # a copy: the selector's text is given back below
+  r.text = intern(sel)                 # a copy: lss_rule frees sel (`{sel}` was sel itself, and dangled)
   r.at = `{f.path}:{line}`
   r.sel = sel_parse(sel, err)
   if r.sel != null {