fix: handle escaped backslashes before quotes in JSONC parser

The previous check only looked at one preceding character, failing
for cases like "test\\" where \\ is an escaped backslash and
the final " is the real closing quote.

Now counts consecutive backslashes - even count means quote is real,
odd count means quote is escaped.

Author: MohMaya

src/services/jsonc.ts

@@ -14,8 +14,19 @@ export function stripJsoncComments(content: string): string {
     const nextChar = content[i + 1];
 
     if (!inSingleLineComment && !inMultiLineComment) {
-      if (char === '"' && (i === 0 || content[i - 1] !== "\\")) {
-        inString = !inString;
+      if (char === '"') {
+        // Count consecutive backslashes before this quote
+        let backslashCount = 0;
+        let j = i - 1;
+        while (j >= 0 && content[j] === "\\") {
+          backslashCount++;
+          j--;
+        }
+        // Quote is escaped only if preceded by ODD number of backslashes
+        // e.g., \" = escaped, \\" = not escaped (escaped backslash + quote)
+        if (backslashCount % 2 === 0) {
+          inString = !inString;
+        }
         result += char;
         i++;
         continue;