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-9-lesson-4.module

@@ -8,43 +8,43 @@ VOICE_DEFAULT: aoede | Clear, friendly American English narrator
 VOICE_INTRO: aoede | Warm, lightly witty narrator
 VOICE_PROMPT: gacrux | Questions and cues, read clearly
 VOICE_RESPONSE: schedar | Model answers, warm and clear
-VOICE: Alex | achernar | Male
-VOICE: Rita | gacrux | Female
+VOICE: Alex | achird | Male
+VOICE: Rita | achernar | Female
 VOICE: Man | achird | Male
-VOICE: Lady | schedar | Female
-VOICE: Clerk | achird | Male
-VOICE: Jimmy | achernar | Male speaker
-VOICE: Freddy | achird | Male speaker
-VOICE: Customer | achernar | Male speaker
-VOICE: Waiter | achird | Male speaker
-VOICE: Chuck | achernar | Male speaker
-VOICE: Tony | achird | Male speaker
-VOICE: Dan | achernar | Male speaker
-VOICE: Tom | achird | Male speaker
-VOICE: Sam | schedar | Male speaker
-VOICE: Jim | achernar | Male speaker
-VOICE: Don | achird | Male speaker
-VOICE: Kim | aoede | Female speaker
-VOICE: Pat | schedar | Female speaker
+VOICE: Lady | achernar | Female
+VOICE: Clerk | charon | Male
+VOICE: Jimmy | alnilam | Male speaker
+VOICE: Freddy | charon | Male speaker
+VOICE: Customer | achird | Male speaker
+VOICE: Waiter | iapetus | Male speaker
+VOICE: Chuck | alnilam | Male speaker
+VOICE: Tony | umbriel | Male speaker
+VOICE: Dan | orus | Male speaker
+VOICE: Tom | schedar | Male speaker
+VOICE: Sam | charon | Male speaker
+VOICE: Jim | iapetus | Male speaker
+VOICE: Don | umbriel | Male speaker
+VOICE: Kim | kore | Female speaker
+VOICE: Pat | leda | Female speaker
 VOICE: Sue | aoede | Female speaker
 VOICE: Bob | achird | Male speaker
-VOICE: Tim | achernar | Male speaker
-VOICE: Pam | aoede | Female speaker
-VOICE: Ann | aoede | Female speaker
-VOICE: Kevin | achird | Male speaker
+VOICE: Tim | puck | Male speaker
+VOICE: Pam | achernar | Female speaker
+VOICE: Ann | kore | Female speaker
+VOICE: Kevin | orus | Male speaker
 VOICE: Linda | aoede | Female speaker
-VOICE: Alan | achernar | Male speaker
-VOICE: Paul | achird | Male speaker
-VOICE: Mike | achernar | Male speaker
-VOICE: Sara | aoede | Female speaker
-VOICE: Bill | achird | Male speaker
-VOICE: Jeff | achernar | Male speaker
-VOICE: Lori | aoede | Female speaker
-VOICE: Waitress | aoede | Female speaker
-VOICE: Mr_Allen | achernar | Male speaker
-VOICE: Mr_Simms | achird | Male speaker
-VOICE: Mr_Rogers | achernar | Male speaker
-VOICE: Carla | aoede | Female speaker
+VOICE: Alan | schedar | Male speaker
+VOICE: Paul | rasalgethi | Male speaker
+VOICE: Mike | algieba | Male speaker
+VOICE: Sara | achernar | Female speaker
+VOICE: Bill | charon | Male speaker
+VOICE: Jeff | orus | Male speaker
+VOICE: Lori | kore | Female speaker
+VOICE: Waitress | leda | Female speaker
+VOICE: Mr_Allen | charon | Male speaker
+VOICE: Mr_Simms | alnilam | Male speaker
+VOICE: Mr_Rogers | achird | Male speaker
+VOICE: Carla | achernar | Female speaker
 VOICE: ID | achernar | speaker (auto)
 VOICE: Narrator | achird | speaker (auto)