voice audit: gender-correct Gemini voices for all dialogue speakers (398/982 were mismatched, mostly female achernar on male roles); recurring characters keep one voice course-wide; distinct voices within dialogues

Co-authored-by: Cursor <cursoragent@cursor.com>

book-11-lesson-2.module

@@ -6,40 +6,40 @@ HOME_LANG_G: en
 VOICE_DEFAULT: aoede | Clear, friendly American English narrator
 VOICE_PROMPT: gacrux | Questions and cues, read clearly
 VOICE_RESPONSE: schedar | Model answers, warm and clear
-VOICE: Carl | achernar | Male student driver
+VOICE: Carl | umbriel | Male student driver
 VOICE: Mr_Ford | schedar | Male driving instructor
-VOICE: Kathy | gacrux | Female
-VOICE: Kevin | achernar | Male
+VOICE: Kathy | leda | Female
+VOICE: Kevin | orus | Male
 VOICE: Sally | gacrux | Female
-VOICE: Steve | achernar | Male
-VOICE: Maria | gacrux | Female
-VOICE: David | achernar | Male
-VOICE: Janet | gacrux | Female
-VOICE: Jason | achernar | Male
-VOICE: Alice | gacrux | Female
-VOICE: Larry | achernar | Male
+VOICE: Steve | iapetus | Male
+VOICE: Maria | callirrhoe | Female
+VOICE: David | alnilam | Male
+VOICE: Janet | kore | Female
+VOICE: Jason | achird | Male
+VOICE: Alice | achernar | Female
+VOICE: Larry | algieba | Male
 VOICE: Jan | gacrux | Female
-VOICE: Bob | achernar | Male
-VOICE: Tom | achernar | Male
-VOICE: Ann | gacrux | Female
-VOICE: Keith | achernar | Male
-VOICE: Frank | achird | Male
+VOICE: Bob | achird | Male
+VOICE: Tom | schedar | Male
+VOICE: Ann | kore | Female
+VOICE: Keith | puck | Male
+VOICE: Frank | charon | Male
 VOICE: Roommate | gacrux | Female
 VOICE: Anne | aoede | Female
-VOICE: Carol | aoede | Female
-VOICE: Greg | achernar | Male
-VOICE: Sam | schedar | Male
-VOICE: Alan | achird | Male
+VOICE: Carol | kore | Female
+VOICE: Greg | achird | Male
+VOICE: Sam | charon | Male
+VOICE: Alan | schedar | Male
 VOICE: Lynn | aoede | Female speaker
-VOICE: Instructor | achird | Male speaker
-VOICE: Waiter | achernar | Male speaker
+VOICE: Instructor | charon | Male speaker
+VOICE: Waiter | iapetus | Male speaker
 VOICE: Martin | achird | Male speaker
-VOICE: Martha | aoede | Female speaker
-VOICE: Morton | achernar | Male speaker
+VOICE: Martha | achernar | Female speaker
+VOICE: Morton | charon | Male speaker
 VOICE: Marian | aoede | Female speaker
-VOICE: James | achernar | Male speaker
-VOICE: Ralph | achird | Male speaker
-VOICE: StudentA | achernar | Male speaker
+VOICE: James | achird | Male speaker
+VOICE: Ralph | alnilam | Male speaker
+VOICE: StudentA | achird | Male speaker
 VOICE: StudentB | aoede | Female speaker
 VOICE: ID | achernar | speaker (auto)
 VOICE: Narrator | achird | speaker (auto)