Add AI chat feature for verse explanations and fix login redirect handling

Bible Reader Enhancements:
- Add chat icon to each verse for AI explanations
- Implement handleVerseChat function with pre-filled contextual messages
- Chat opens with message: "Explain in depth this verse [text] from [version], [book] [chapter:verse] and its meaning"
- Visible to all users, redirects to login for unauthenticated users
- Fix copy message translation from 'bible.copied' to 'copied'

Login System Improvements:
- Fix redirect parameter handling in login pages
- Users are now properly redirected to /bible page after successful login
- Preserve redirect URL parameters through login flow
- Add Suspense boundaries for useSearchParams compliance
- Ensure verse/chapter context is maintained after login

Technical Changes:
- Add Chat icon import from Material-UI
- Implement floating chat event dispatch system
- Fix Next.js 15 build warnings with proper Suspense wrapping
- Maintain existing UX patterns (visible to all, functional for authenticated users)

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

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

app/[locale]/bible/reader.tsx

@@ -68,7 +68,8 @@ import {
   ExpandMore,
   MenuBook,
   Visibility,
-  Speed
+  Speed,
+  Chat
 } from '@mui/icons-material'
 
 interface BibleVerse {
@@ -664,11 +665,32 @@ export default function BibleReaderNew() {
     navigator.clipboard.writeText(text).then(() => {
       setCopyFeedback({
         open: true,
-        message: t('bible.copied')
+        message: t('copied')
       })
     })
   }
 
+  const handleVerseChat = (verse: BibleVerse) => {
+    // If user is not authenticated, redirect to login
+    if (!user) {
+      router.push(`/${locale}/login?redirect=${encodeURIComponent(`/${locale}/bible?version=${selectedVersion}&book=${selectedBook}&chapter=${selectedChapter}&verse=${verse.verseNum}`)}`)
+      return
+    }
+
+    const versionName = versions.find(v => v.id === selectedVersion)?.name || selectedVersion
+    const bookName = currentBook?.name || 'Unknown Book'
+
+    const initialMessage = `Explain in depth this verse "${verse.text}" from ${versionName}, ${bookName} ${selectedChapter}:${verse.verseNum} and its meaning`
+
+    // Dispatch event to open floating chat with the pre-filled message
+    window.dispatchEvent(new CustomEvent('floating-chat:open', {
+      detail: {
+        initialMessage: initialMessage,
+        fullscreen: false
+      }
+    }))
+  }
+
   const getThemeStyles = () => {
     switch (preferences.theme) {
       case 'dark':
@@ -765,6 +787,13 @@ export default function BibleReaderNew() {
             >
               <ContentCopy fontSize="small" />
             </IconButton>
+            <IconButton
+              size="small"
+              onClick={() => handleVerseChat(verse)}
+              sx={{ color: 'action.active' }}
+            >
+              <Chat fontSize="small" />
+            </IconButton>
           </Box>
         )}
       </Box>