feat: add user favorite Bible version preference system

- Add favoriteBibleVersion field to User schema in Prisma
- Create API endpoint (/api/user/favorite-version) to get/set favorite version
  - GET: retrieve user's favorite Bible version
  - POST: save/update user's favorite Bible version

- Enhance Bible reader functionality
  - Automatically load user's favorite version on mount (logged-in users)
  - Add star button (⭐) next to version selector to set current version as default
  - Display success message when favorite version is saved
  - Fall back to default version if no favorite is set

- Add Bible Preferences section to Settings page
  - Display user's current favorite Bible version in dropdown
  - Allow users to view and change favorite version
  - Load all Bible versions (removed 200 limit) to ensure favorite is found
  - Show confirmation message when version is selected
  - Add loading state while fetching versions

- Fix renderValue in Select component to properly display version names
- Add comprehensive debug logging for troubleshooting

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

prisma/schema.prisma

@@ -8,16 +8,17 @@ datasource db {
 }
 
 model User {
-  id              String    @id @default(uuid())
-  email           String    @unique
-  passwordHash    String
-  name            String?
-  role            String    @default("user") // "user", "admin", "moderator"
-  theme           String    @default("light")
-  fontSize        String    @default("medium")
-  createdAt       DateTime  @default(now())
-  updatedAt       DateTime  @updatedAt
-  lastLoginAt     DateTime?
+  id                    String    @id @default(uuid())
+  email                 String    @unique
+  passwordHash          String
+  name                  String?
+  role                  String    @default("user") // "user", "admin", "moderator"
+  theme                 String    @default("light")
+  fontSize              String    @default("medium")
+  favoriteBibleVersion  String?   // User's preferred Bible version ID
+  createdAt             DateTime  @default(now())
+  updatedAt             DateTime  @updatedAt
+  lastLoginAt           DateTime?
 
   sessions        Session[]
   bookmarks       Bookmark[]