Fix Gemini voice genders in books 9-12 (achernar is a female voice)

Male-described speakers were mapped to the female voice achernar (and a few
females to schedar) — 210 VOICE swaps across the four regenerated books.
Also: book-11 'Two Letters' now labeled Jane:/Ann: with female voices
instead of one Narrator (Yana's report), and junk auto-declared 'VOICE: ID'
lines dropped.

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

book-10-lesson-3.module

@@ -8,61 +8,60 @@ VOICE_DEFAULT: aoede | Clear, friendly American English narrator
 VOICE_PROMPT: gacrux | For stimulus/prompt audio
 VOICE_RESPONSE: schedar | Model answers, warm and clear
 VOICE: Judy | gacrux | Female
-VOICE: July | achernar | Male
+VOICE: July | schedar | Male
 VOICE: Mrs_Adams | gacrux | Female
-VOICE: Mr_Wilson | achernar | Male
-VOICE: Flight_Attendant | schedar | Female
+VOICE: Mr_Wilson | achird | Male
+VOICE: Flight_Attendant | gacrux | Female
 VOICE: Mary | gacrux | Female
 VOICE: Ann | aoede | Female
-VOICE: Clerk | achernar | Male
+VOICE: Clerk | achird | Male
 VOICE: Customer | achird | Male
 VOICE: Kim | gacrux | Female
-VOICE: Ken | achernar | Male
+VOICE: Ken | charon | Male
 VOICE: Jan | aoede | Female
 VOICE: Mom | gacrux | Female
 VOICE: Sue | aoede | Female
-VOICE: Dan | achernar | Male
+VOICE: Dan | achird | Male
 VOICE: Instructor | schedar | Male
 VOICE: Lt_Fuller | achird | Male
-VOICE: Sgt_Jones | achernar | Male
+VOICE: Sgt_Jones | achird | Male
 VOICE: Sam | achird | Male
-VOICE: Mike | achernar | Male
+VOICE: Mike | schedar | Male
 VOICE: David | achird | Male
-VOICE: Gloria | schedar | Female
+VOICE: Gloria | aoede | Female
 VOICE: Peggy | aoede | Female
-VOICE: Liz | schedar | Female
-VOICE: Roger | achernar | Male
-VOICE: Jim | achernar | Male
+VOICE: Liz | gacrux | Female
+VOICE: Roger | charon | Male
+VOICE: Jim | schedar | Male
 VOICE: Bob | achird | Male
-VOICE: Sgt_Burns | achernar | Male
+VOICE: Sgt_Burns | charon | Male
 VOICE: Sgt_Marsh | achird | Male
-VOICE: Walt | achernar | Male
+VOICE: Walt | schedar | Male
 VOICE: Tim | achird | Male
-VOICE: Carl | achernar | Male
+VOICE: Carl | achird | Male
 VOICE: Ted | achird | Male
-VOICE: Lt_Anders | achernar | Male
+VOICE: Lt_Anders | achird | Male
 VOICE: Lt_Ashly | achird | Male
 VOICE: Larry | achird | Male
 VOICE: Janet | aoede | Female
-VOICE: Vince | achernar | Male
-VOICE: Adam | achernar | Male
+VOICE: Vince | schedar | Male
+VOICE: Adam | achird | Male
 VOICE: Jack | achird | Male
 VOICE: Rita | aoede | Female
-VOICE: Fran | schedar | Female
+VOICE: Fran | achernar | Female
 VOICE: Anna | aoede | Female
-VOICE: Bill | achernar | Male
-VOICE: Student1 | achernar | Male
+VOICE: Bill | schedar | Male
+VOICE: Student1 | charon | Male
 VOICE: Student2 | achird | Male
 VOICE: Capt_Moreno | achird | Male
-VOICE: Sgt_Kline | achernar | Male
+VOICE: Sgt_Kline | achird | Male
 VOICE: Sgt_Anderson | achird | Male
-VOICE: Dad | achernar | Male
+VOICE: Dad | charon | Male
 VOICE: Freddy | achird | Male
 VOICE: Susie | aoede | Female
-VOICE: Maj_Jones | achernar | Male
+VOICE: Maj_Jones | schedar | Male
 VOICE: Ms_Rogers | aoede | Female
 VOICE: Mr_Thompson | achird | Male
-VOICE: ID | achernar | speaker (auto)
 
 $SESSION 3-1: Flat Tires — Bicycles and Cars