fix(voice): Quote splitting based on single and double quotes

packages/voice/src/contractions.ts

@@ -0,0 +1,82 @@
+import { splitQuotes } from "./dehydration.js";
+
+/**
+ * Preprocessor that expands common contractions (e.g. "he's" -> "he is", "I'm" -> "I am")
+ * in non-quote segments of a text, keeping dialogue segments untouched.
+ */
+export function expandContractions(text: string): string {
+  if (!text) return "";
+
+  const contractionMap: Record<string, string> = {
+    "i'm": "I am",
+    "you're": "you are",
+    "he's": "he is",
+    "she's": "she is",
+    "it's": "it is",
+    "we're": "we are",
+    "they're": "they are",
+    "i've": "I have",
+    "you've": "you have",
+    "we've": "we have",
+    "they've": "they have",
+    "i'd": "I would",
+    "you'd": "you would",
+    "he'd": "he would",
+    "she'd": "she would",
+    "we'd": "we would",
+    "they'd": "they would",
+    "i'll": "I will",
+    "you'll": "you will",
+    "he'll": "he will",
+    "she'll": "she will",
+    "we'll": "we will",
+    "they'll": "they will",
+    "isn't": "is not",
+    "aren't": "are not",
+    "wasn't": "was not",
+    "weren't": "were not",
+    "haven't": "have not",
+    "hasn't": "has not",
+    "hadn't": "had not",
+    "won't": "will not",
+    "wouldn't": "would not",
+    "don't": "do not",
+    "doesn't": "does not",
+    "didn't": "did not",
+    "can't": "cannot",
+    "couldn't": "could not",
+    "shouldn't": "should not",
+    "mightn't": "might not",
+    "mustn't": "must not",
+  };
+
+  const segments = splitQuotes(text);
+  const processed = segments.map((seg) => {
+    if (seg.isQuote) {
+      return `"${seg.text}"`;
+    }
+
+    let chunk = seg.text;
+    Object.entries(contractionMap).forEach(([contraction, replacement]) => {
+      const escaped = contraction.replace("'", "'");
+      const regex = new RegExp(`\\b${escaped}\\b`, "gi");
+      chunk = chunk.replace(regex, (matched) => {
+        const isCapitalized = matched[0] === matched[0].toUpperCase();
+        let finalRep = replacement;
+        if (isCapitalized) {
+          finalRep = finalRep[0].toUpperCase() + finalRep.slice(1);
+        } else {
+          if (finalRep.startsWith("I ")) {
+            // Keep I capitalized
+          } else {
+            finalRep = finalRep[0].toLowerCase() + finalRep.slice(1);
+          }
+        }
+        return finalRep;
+      });
+    });
+    return chunk;
+  });
+
+  return processed.join("");
+}

packages/voice/src/dehydration.ts

@@ -14,13 +14,12 @@ export function splitQuotes(text: string): Segment[] {
 
   for (let i = 0; i < text.length; i++) {
     const char = text[i];
-    if ((char === '"' || char === "'") && (!inQuote || char === quoteChar)) {
+    if (char === '"') {
       if (current) {
         segments.push({ text: current, isQuote: inQuote });
         current = "";
       }
       inQuote = !inQuote;
-      quoteChar = inQuote ? char : "";
     } else {
       current += char;
     }

packages/voice/src/index.ts

@@ -1,2 +1,3 @@
 export * from "./dehydration.js";
 export * from "./hydration.js";
+export * from "./contractions.js";