fix(code-placeholders): skip continued newlines before comparison operands

Author: waleedlatif1

apps/sim/lib/execution/code-placeholders/shell.ts

@@ -583,6 +583,10 @@ function collectShellOccurrenceContexts<T extends ShellSpan>(
       frame.kind !== 'parameter'
     ) {
       if (frame.conditional) {
+        if (character === '\\' && code[index + 1] === '\n') {
+          index += 2
+          continue
+        }
         if ((character === '&' || character === '|') && code[index + 1] === character) {
           endConditionalOperand(frame, index)
         }

apps/sim/scripts/test-shell-placeholders-e2e.ts

@@ -70,6 +70,8 @@ async function compile(code: string, value: string): Promise<CompiledCodePlaceho
 
 try {
   const arithmetic = [
+    '[[ "{{KEY}}" \\\n  -eq 0 ]]',
+    '[[ \\\n  "{{KEY}}" -eq 0 ]]',
     'time -p [[ "{{KEY}}" -eq 0 ]]',
     'coproc [[ "{{KEY}}" -eq 0 ]]; wait',
     'coproc worker [[ "{{KEY}}" -eq 0 ]]; wait',
@@ -150,6 +152,7 @@ try {
   }
 
   const safePrograms = [
+    '[[ "{{KEY}}" < \\\n  -eq ]] || printf "%s\\n" ok',
     'time -p printf "%s\\n" "{{KEY}}" >/dev/null; printf "%s\\n" ok',
     'if (( BASH_VERSINFO[0] >= 4 )); then coproc printf "%s\\n" "{{KEY}}" [[ -eq 0 ]]; wait; fi; printf "%s\\n" ok',
     // biome-ignore lint/suspicious/noTemplateCurlyInString: shell parameter expansion