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-9-lesson-1.module

@@ -6,42 +6,41 @@ 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: Mark | achernar | Male customer
+VOICE: Mark | achird | Male customer
 VOICE: Woman | gacrux | Female bank clerk
 VOICE: Student | achird | Student
-VOICE: Jack | achernar | Male speaker
+VOICE: Jack | achird | Male speaker
 VOICE: Fred | achird | Male speaker
-VOICE: Mike | achernar | Male speaker
+VOICE: Mike | schedar | Male speaker
 VOICE: Lou | achird | Male speaker
-VOICE: Jim | achernar | Male speaker
+VOICE: Jim | schedar | Male speaker
 VOICE: Ray | achird | Male speaker
-VOICE: Brad | achernar | Male speaker
+VOICE: Brad | achird | Male speaker
 VOICE: John | achird | Male speaker
 VOICE: Teller | aoede | Female bank teller
-VOICE: Mrs_Morris | schedar | Female customer
-VOICE: Lt_Andrews | achernar | Male speaker
+VOICE: Mrs_Morris | gacrux | Female customer
+VOICE: Lt_Andrews | achird | Male speaker
 VOICE: Capt_Miles | achird | Male speaker
-VOICE: Tom | achernar | Male speaker
+VOICE: Tom | charon | Male speaker
 VOICE: Stan | achird | Male speaker
-VOICE: Pat | schedar | Female speaker
+VOICE: Pat | aoede | Female speaker
 VOICE: Tim | achird | Male speaker
-VOICE: Ted | achernar | Male speaker
+VOICE: Ted | schedar | Male speaker
 VOICE: Nancy | aoede | Female speaker
-VOICE: Ellen | schedar | Female speaker
+VOICE: Ellen | achernar | Female speaker
 VOICE: Bob | achird | Male speaker
-VOICE: Lt_Sands | achernar | Male speaker
+VOICE: Lt_Sands | charon | Male speaker
 VOICE: Lt_Reed | achird | Male speaker
 VOICE: Rita | aoede | Female speaker
-VOICE: Lori | schedar | Female speaker
-VOICE: Allen | achernar | Male speaker
+VOICE: Lori | achernar | Female speaker
+VOICE: Allen | schedar | Male speaker
 VOICE: Roger | achird | Male speaker
-VOICE: Peter | achernar | Male speaker
+VOICE: Peter | achird | Male speaker
 VOICE: Harry | achird | Male speaker
-VOICE: Kevin | achernar | Male speaker
+VOICE: Kevin | achird | Male speaker
 VOICE: Lt_Jones | achird | Male speaker
-VOICE: Capt_Smith | achernar | Male speaker
+VOICE: Capt_Smith | schedar | Male speaker
 VOICE: Ed | achird | Male speaker
-VOICE: ID | achernar | speaker (auto)
 VOICE: Narrator | achird | speaker (auto)
 
 $SESSION 1-1: At the Bank — Words and Conversations