Files
biblical-guide.com/PARALLEL_BIBLE_VIEW_PLAN.md
Andrei 9b5c0ed8bb build: production build with Phase 1 2025 Bible Reader implementation complete
Includes all Phase 1 features:
- Search-first navigation with auto-complete
- Responsive reading interface (desktop/tablet/mobile)
- 4 customization presets + full fine-tuning controls
- Layered details panel with notes, bookmarks, highlights
- Smart offline caching with IndexedDB and auto-sync
- Full accessibility (WCAG 2.1 AA)

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

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-11 20:38:01 +00:00

26 KiB

Parallel Bible View - Implementation Plan

📋 Overview

Implement a side-by-side Bible reading experience allowing users to compare multiple translations simultaneously, perfect for Bible study, translation verification, and deep Scripture analysis.

Status: Planning Phase Priority: 🔴 High Estimated Time: 2 weeks (80 hours) Target Completion: TBD


🎯 Goals & Objectives

Primary Goals

  1. Enable simultaneous viewing of 2-3 Bible translations
  2. Provide synchronized scrolling across all panes
  3. Allow easy switching between versions
  4. Maintain responsive design for mobile devices
  5. Support independent highlighting per version

User Value Proposition

  • For Bible students: Compare translations to understand nuances
  • For scholars: Analyze textual differences
  • For language learners: See original and translated text
  • For teachers: Prepare lessons with multiple versions
  • For translators: Verify accuracy against source texts

Feature Specifications

1. Layout Configurations

type PaneLayout = '1-pane' | '2-pane-horizontal' | '2-pane-vertical' | '3-pane' | '4-pane'

interface LayoutConfig {
  layout: PaneLayout
  panes: PaneConfig[]
  syncScroll: boolean
  syncChapter: boolean // All panes show same chapter
  equalWidths: boolean
  showDividers: boolean
  compactMode: boolean // Reduce padding on mobile
}

interface PaneConfig {
  id: string
  versionId: string
  visible: boolean
  width: number // percentage (for horizontal layouts)
  locked: boolean // Prevent accidental changes
  customSettings?: {
    fontSize?: number
    theme?: 'light' | 'dark' | 'sepia'
    showVerseNumbers?: boolean
  }
}

2. Visual Layouts

Desktop Layouts

2-Pane Horizontal:
┌─────────────────┬─────────────────┐
│   KJV           │   ESV           │
│                 │                 │
│ Genesis 1:1     │ Genesis 1:1     │
│ In the          │ In the          │
│ beginning...    │ beginning...    │
│                 │                 │
└─────────────────┴─────────────────┘

3-Pane:
┌───────┬───────┬───────┐
│  KJV  │  ESV  │  NIV  │
│       │       │       │
│ Gen 1 │ Gen 1 │ Gen 1 │
│       │       │       │
└───────┴───────┴───────┘

2-Pane Vertical (Stacked):
┌─────────────────────────┐
│   KJV - Genesis 1       │
│                         │
│   1 In the beginning... │
└─────────────────────────┘
┌─────────────────────────┐
│   ESV - Genesis 1       │
│                         │
│   1 In the beginning... │
└─────────────────────────┘

Mobile Layout

Mobile (Stacked with Tabs):
┌─────────────────────────┐
│ [KJV] [ESV] [NIV]  [+]  │ ← Tab bar
├─────────────────────────┤
│   Genesis 1:1-31        │
│                         │
│   1 In the beginning... │
│   2 And the earth...    │
│                         │
│ ▼ Swipe to compare ▼    │
└─────────────────────────┘

3. Synchronized Scrolling

interface ScrollSyncConfig {
  enabled: boolean
  mode: 'verse' | 'pixel' | 'paragraph'
  leadPane: string | 'any' // Which pane controls scroll
  smoothness: number // 0-1, animation easing
  threshold: number // Minimum scroll delta to trigger sync
}

class ScrollSynchronizer {
  private panes: HTMLElement[]
  private isScrolling: boolean = false
  private scrollTimeout: NodeJS.Timeout | null = null

  constructor(private config: ScrollSyncConfig) {}

  syncScroll(sourcePane: HTMLElement, scrollTop: number): void {
    if (this.isScrolling) return
    this.isScrolling = true

    switch (this.config.mode) {
      case 'verse':
        this.syncByVerse(sourcePane, scrollTop)
        break
      case 'pixel':
        this.syncByPixel(sourcePane, scrollTop)
        break
      case 'paragraph':
        this.syncByParagraph(sourcePane, scrollTop)
        break
    }

    // Reset scrolling flag after brief delay
    clearTimeout(this.scrollTimeout)
    this.scrollTimeout = setTimeout(() => {
      this.isScrolling = false
    }, 100)
  }

  private syncByVerse(sourcePane: HTMLElement, scrollTop: number): void {
    // Find which verse is at the top of source pane
    const visibleVerse = this.getVisibleVerseNumber(sourcePane, scrollTop)

    // Scroll other panes to show the same verse at top
    this.panes.forEach(pane => {
      if (pane === sourcePane) return

      const targetVerse = pane.querySelector(`[data-verse="${visibleVerse}"]`)
      if (targetVerse) {
        pane.scrollTo({
          top: (targetVerse as HTMLElement).offsetTop - 100,
          behavior: 'smooth'
        })
      }
    })
  }

  private syncByPixel(sourcePane: HTMLElement, scrollTop: number): void {
    // Calculate scroll percentage
    const scrollHeight = sourcePane.scrollHeight - sourcePane.clientHeight
    const scrollPercent = scrollTop / scrollHeight

    // Apply same percentage to other panes
    this.panes.forEach(pane => {
      if (pane === sourcePane) return

      const targetScrollHeight = pane.scrollHeight - pane.clientHeight
      const targetScrollTop = targetScrollHeight * scrollPercent

      pane.scrollTo({
        top: targetScrollTop,
        behavior: 'smooth'
      })
    })
  }

  private getVisibleVerseNumber(pane: HTMLElement, scrollTop: number): number {
    const verses = Array.from(pane.querySelectorAll('[data-verse]'))
    const viewportTop = scrollTop + 100 // Offset for header

    for (const verse of verses) {
      const verseTop = (verse as HTMLElement).offsetTop
      if (verseTop >= viewportTop) {
        return parseInt(verse.getAttribute('data-verse') || '1')
      }
    }

    return 1
  }
}

4. Version Selector Per Pane

interface VersionSelectorProps {
  paneId: string
  currentVersionId: string
  onVersionChange: (versionId: string) => void
  position: 'top' | 'bottom'
  compact?: boolean
}

const VersionSelector: React.FC<VersionSelectorProps> = ({
  paneId,
  currentVersionId,
  onVersionChange,
  position,
  compact = false
}) => {
  const [versions, setVersions] = useState<BibleVersion[]>([])
  const [search, setSearch] = useState('')

  useEffect(() => {
    // Load available versions
    fetch('/api/bible/versions')
      .then(r => r.json())
      .then(data => setVersions(data.versions))
  }, [])

  const filteredVersions = versions.filter(v =>
    v.name.toLowerCase().includes(search.toLowerCase()) ||
    v.abbreviation.toLowerCase().includes(search.toLowerCase())
  )

  return (
    <Box className={`version-selector ${position}`}>
      <FormControl fullWidth size={compact ? 'small' : 'medium'}>
        <Select
          value={currentVersionId}
          onChange={(e) => onVersionChange(e.target.value)}
          renderValue={(value) => {
            const version = versions.find(v => v.id === value)
            return version?.abbreviation || 'Select Version'
          }}
        >
          <Box sx={{ p: 1 }}>
            <TextField
              placeholder="Search versions..."
              size="small"
              fullWidth
              value={search}
              onChange={(e) => setSearch(e.target.value)}
              onClick={(e) => e.stopPropagation()}
            />
          </Box>
          <Divider />
          {filteredVersions.map(version => (
            <MenuItem key={version.id} value={version.id}>
              <Box>
                <Typography variant="body2" fontWeight="600">
                  {version.abbreviation}
                </Typography>
                <Typography variant="caption" color="text.secondary">
                  {version.name} ({version.language})
                </Typography>
              </Box>
            </MenuItem>
          ))}
        </Select>
      </FormControl>
    </Box>
  )
}

5. Verse Alignment Highlighting

interface AlignmentConfig {
  enabled: boolean
  highlightMode: 'hover' | 'focus' | 'always' | 'none'
  color: string
  showConnectors: boolean // Lines between aligned verses
}

// Highlight same verse across all panes
const VerseAlignmentHighlighter: React.FC = () => {
  const { panes, alignmentConfig } = useParallelView()
  const [hoveredVerse, setHoveredVerse] = useState<number | null>(null)

  useEffect(() => {
    if (!alignmentConfig.enabled || alignmentConfig.highlightMode === 'none') {
      return
    }

    const handleVerseHover = (e: MouseEvent) => {
      const verseElement = (e.target as HTMLElement).closest('[data-verse]')
      if (verseElement) {
        const verseNum = parseInt(verseElement.getAttribute('data-verse') || '0')
        setHoveredVerse(verseNum)
      } else {
        setHoveredVerse(null)
      }
    }

    document.addEventListener('mouseover', handleVerseHover)
    return () => document.removeEventListener('mouseover', handleVerseHover)
  }, [alignmentConfig])

  useEffect(() => {
    if (hoveredVerse === null) {
      // Remove all highlights
      document.querySelectorAll('.verse-aligned').forEach(el => {
        el.classList.remove('verse-aligned')
      })
      return
    }

    // Highlight verse in all panes
    panes.forEach(pane => {
      const verseElements = document.querySelectorAll(
        `#pane-${pane.id} [data-verse="${hoveredVerse}"]`
      )
      verseElements.forEach(el => el.classList.add('verse-aligned'))
    })
  }, [hoveredVerse, panes])

  return null
}

// CSS
.verse-aligned {
  background-color: rgba(var(--primary-rgb), 0.1);
  border-left: 3px solid var(--primary-color);
  padding-left: 8px;
  margin-left: -11px;
  transition: all 0.2s ease;
}

6. Diff View for Text Differences

interface DiffConfig {
  enabled: boolean
  compareAgainst: string // Pane ID to use as reference
  diffMode: 'word' | 'phrase' | 'verse'
  highlightStyle: 'color' | 'underline' | 'background' | 'strikethrough'
  showSimilarity: boolean // Show % similarity score
}

// Simple word-level diff
function calculateDiff(text1: string, text2: string): DiffResult[] {
  const words1 = text1.split(/\s+/)
  const words2 = text2.split(/\s+/)

  const diff: DiffResult[] = []

  // Simple longest common subsequence approach
  let i = 0, j = 0
  while (i < words1.length || j < words2.length) {
    if (words1[i] === words2[j]) {
      diff.push({ type: 'same', text: words1[i] })
      i++
      j++
    } else {
      // Check if word exists ahead
      const indexInText2 = words2.slice(j).indexOf(words1[i])
      const indexInText1 = words1.slice(i).indexOf(words2[j])

      if (indexInText2 !== -1 && (indexInText1 === -1 || indexInText2 < indexInText1)) {
        // Word missing in text1
        diff.push({ type: 'added', text: words2[j] })
        j++
      } else if (indexInText1 !== -1) {
        // Word missing in text2
        diff.push({ type: 'removed', text: words1[i] })
        i++
      } else {
        // Different words
        diff.push({ type: 'changed', text1: words1[i], text2: words2[j] })
        i++
        j++
      }
    }
  }

  return diff
}

interface DiffResult {
  type: 'same' | 'added' | 'removed' | 'changed'
  text?: string
  text1?: string
  text2?: string
}

// Component to render diff
const DiffHighlightedVerse: React.FC<{
  verseText: string
  referenceText: string
  config: DiffConfig
}> = ({ verseText, referenceText, config }) => {
  if (!config.enabled) {
    return <span>{verseText}</span>
  }

  const diff = calculateDiff(referenceText, verseText)

  return (
    <span>
      {diff.map((part, index) => {
        if (part.type === 'same') {
          return <span key={index}>{part.text} </span>
        } else if (part.type === 'added') {
          return (
            <mark key={index} className="diff-added">
              {part.text}{' '}
            </mark>
          )
        } else if (part.type === 'removed') {
          return (
            <del key={index} className="diff-removed">
              {part.text}{' '}
            </del>
          )
        } else if (part.type === 'changed') {
          return (
            <mark key={index} className="diff-changed">
              {part.text2}{' '}
            </mark>
          )
        }
      })}
    </span>
  )
}

7. Quick Swap Versions

// Allow swapping versions between panes
const SwapVersionsButton: React.FC<{
  pane1Id: string
  pane2Id: string
}> = ({ pane1Id, pane2Id }) => {
  const { panes, updatePane } = useParallelView()

  const handleSwap = () => {
    const pane1 = panes.find(p => p.id === pane1Id)
    const pane2 = panes.find(p => p.id === pane2Id)

    if (pane1 && pane2) {
      updatePane(pane1Id, { versionId: pane2.versionId })
      updatePane(pane2Id, { versionId: pane1.versionId })
    }
  }

  return (
    <IconButton
      onClick={handleSwap}
      size="small"
      title="Swap versions"
      sx={{
        position: 'absolute',
        top: '50%',
        left: '50%',
        transform: 'translate(-50%, -50%)',
        bgcolor: 'background.paper',
        boxShadow: 2,
        '&:hover': { boxShadow: 4 }
      }}
    >
      <SwapHorizIcon />
    </IconButton>
  )
}

8. Column Width Adjustment

interface ResizablePane {
  id: string
  minWidth: number // percentage
  maxWidth: number
  currentWidth: number
}

// Draggable divider between panes
const PaneDivider: React.FC<{
  leftPaneId: string
  rightPaneId: string
}> = ({ leftPaneId, rightPaneId }) => {
  const { updatePane } = useParallelView()
  const [isDragging, setIsDragging] = useState(false)
  const [startX, setStartX] = useState(0)
  const [startWidths, setStartWidths] = useState<[number, number]>([50, 50])

  const handleMouseDown = (e: React.MouseEvent) => {
    setIsDragging(true)
    setStartX(e.clientX)

    const leftPane = document.getElementById(`pane-${leftPaneId}`)
    const rightPane = document.getElementById(`pane-${rightPaneId}`)

    if (leftPane && rightPane) {
      const leftWidth = (leftPane.offsetWidth / leftPane.parentElement!.offsetWidth) * 100
      const rightWidth = (rightPane.offsetWidth / rightPane.parentElement!.offsetWidth) * 100
      setStartWidths([leftWidth, rightWidth])
    }
  }

  useEffect(() => {
    if (!isDragging) return

    const handleMouseMove = (e: MouseEvent) => {
      const deltaX = e.clientX - startX
      const container = document.querySelector('.parallel-view-container')
      if (!container) return

      const deltaPercent = (deltaX / container.clientWidth) * 100

      const newLeftWidth = Math.max(20, Math.min(80, startWidths[0] + deltaPercent))
      const newRightWidth = Math.max(20, Math.min(80, startWidths[1] - deltaPercent))

      updatePane(leftPaneId, { width: newLeftWidth })
      updatePane(rightPaneId, { width: newRightWidth })
    }

    const handleMouseUp = () => {
      setIsDragging(false)
    }

    document.addEventListener('mousemove', handleMouseMove)
    document.addEventListener('mouseup', handleMouseUp)

    return () => {
      document.removeEventListener('mousemove', handleMouseMove)
      document.removeEventListener('mouseup', handleMouseUp)
    }
  }, [isDragging, startX, startWidths])

  return (
    <Box
      onMouseDown={handleMouseDown}
      className={`pane-divider ${isDragging ? 'dragging' : ''}`}
      sx={{
        width: '8px',
        cursor: 'col-resize',
        bgcolor: 'divider',
        position: 'relative',
        '&:hover': {
          bgcolor: 'primary.main',
          width: '12px'
        },
        '&.dragging': {
          bgcolor: 'primary.main',
          width: '12px'
        }
      }}
    />
  )
}

9. Independent Highlighting Per Version

// Each pane maintains its own highlights
interface PaneHighlights {
  paneId: string
  highlights: Highlight[]
}

// Store highlights per version in database
model Highlight {
  id         String   @id @default(cuid())
  userId     String
  versionId  String   // Link to specific Bible version
  book       String
  chapter    Int
  verse      Int
  color      String
  note       String?
  createdAt  DateTime @default(now())

  user       User     @relation(fields: [userId], references: [id])
  version    BibleVersion @relation(fields: [versionId], references: [id])

  @@index([userId, versionId, book, chapter])
}

// Load highlights per pane
const loadPaneHighlights = async (
  paneId: string,
  versionId: string,
  book: string,
  chapter: number
): Promise<Highlight[]> => {
  const response = await fetch(
    `/api/highlights?versionId=${versionId}&book=${book}&chapter=${chapter}`
  )
  return response.json()
}

🏗️ Technical Implementation

File Structure

/components/bible-reader/
├── parallel-view/
│   ├── ParallelViewProvider.tsx      # Context provider
│   ├── ParallelViewContainer.tsx     # Main container
│   ├── Pane.tsx                      # Individual pane
│   ├── PaneDivider.tsx               # Resizable divider
│   ├── VersionSelector.tsx           # Version picker per pane
│   ├── LayoutSelector.tsx            # Layout switcher
│   ├── ScrollSynchronizer.tsx        # Scroll sync logic
│   ├── VerseAlignmentHighlighter.tsx # Verse highlighting
│   ├── DiffView.tsx                  # Text difference view
│   ├── SwapControl.tsx               # Version swapping
│   └── hooks/
│       ├── useParallelView.ts        # Main hook
│       ├── useScrollSync.ts          # Scroll synchronization
│       ├── usePaneResize.ts          # Resize logic
│       └── useVerseAlignment.ts      # Alignment logic
└── reader.tsx                         # Updated main reader

Context Provider

// ParallelViewProvider.tsx
interface ParallelViewContextType {
  // State
  enabled: boolean
  layout: LayoutConfig
  panes: PaneConfig[]
  scrollSync: ScrollSyncConfig
  alignmentConfig: AlignmentConfig
  diffConfig: DiffConfig

  // Actions
  toggleParallelView: () => void
  addPane: (config: Partial<PaneConfig>) => void
  removePane: (paneId: string) => void
  updatePane: (paneId: string, updates: Partial<PaneConfig>) => void
  setLayout: (layout: PaneLayout) => void
  updateScrollSync: (config: Partial<ScrollSyncConfig>) => void
  swapVersions: (paneId1: string, paneId2: string) => void
}

export const ParallelViewProvider: React.FC<{
  children: React.ReactNode
}> = ({ children }) => {
  const [enabled, setEnabled] = useState(false)
  const [layout, setLayoutState] = useState<LayoutConfig>(defaultLayout)
  const [panes, setPanes] = useState<PaneConfig[]>([])
  const [scrollSync, setScrollSync] = useState<ScrollSyncConfig>(defaultScrollSync)

  // Load from localStorage
  useEffect(() => {
    const saved = localStorage.getItem('parallel-view-config')
    if (saved) {
      const config = JSON.parse(saved)
      setEnabled(config.enabled)
      setLayoutState(config.layout)
      setPanes(config.panes)
      setScrollSync(config.scrollSync)
    } else {
      // Initialize with default 2-pane view
      const defaultPanes = [
        { id: 'pane-1', versionId: 'kjv', visible: true, width: 50, locked: false },
        { id: 'pane-2', versionId: 'esv', visible: true, width: 50, locked: false }
      ]
      setPanes(defaultPanes)
    }
  }, [])

  // Save to localStorage
  useEffect(() => {
    localStorage.setItem('parallel-view-config', JSON.stringify({
      enabled,
      layout,
      panes,
      scrollSync
    }))
  }, [enabled, layout, panes, scrollSync])

  const addPane = (config: Partial<PaneConfig>) => {
    const newPane: PaneConfig = {
      id: `pane-${Date.now()}`,
      versionId: config.versionId || 'kjv',
      visible: true,
      width: 100 / (panes.length + 1),
      locked: false,
      ...config
    }

    // Adjust existing pane widths
    const adjustedPanes = panes.map(p => ({
      ...p,
      width: p.width * (panes.length / (panes.length + 1))
    }))

    setPanes([...adjustedPanes, newPane])
  }

  const removePane = (paneId: string) => {
    const updatedPanes = panes.filter(p => p.id !== paneId)
    // Redistribute widths
    const equalWidth = 100 / updatedPanes.length
    setPanes(updatedPanes.map(p => ({ ...p, width: equalWidth })))
  }

  const updatePane = (paneId: string, updates: Partial<PaneConfig>) => {
    setPanes(panes.map(p =>
      p.id === paneId ? { ...p, ...updates } : p
    ))
  }

  const swapVersions = (paneId1: string, paneId2: string) => {
    const pane1 = panes.find(p => p.id === paneId1)
    const pane2 = panes.find(p => p.id === paneId2)

    if (pane1 && pane2) {
      updatePane(paneId1, { versionId: pane2.versionId })
      updatePane(paneId2, { versionId: pane1.versionId })
    }
  }

  return (
    <ParallelViewContext.Provider value={{
      enabled,
      layout,
      panes,
      scrollSync,
      alignmentConfig,
      diffConfig,
      toggleParallelView: () => setEnabled(!enabled),
      addPane,
      removePane,
      updatePane,
      setLayout: setLayoutState,
      updateScrollSync: (config) => setScrollSync({ ...scrollSync, ...config }),
      swapVersions
    }}>
      {children}
    </ParallelViewContext.Provider>
  )
}

Main Container Component

// ParallelViewContainer.tsx
export const ParallelViewContainer: React.FC = () => {
  const { enabled, layout, panes, scrollSync } = useParallelView()
  const scrollSynchronizer = useRef(new ScrollSynchronizer(scrollSync))

  if (!enabled || panes.length === 0) {
    return null
  }

  const visiblePanes = panes.filter(p => p.visible)

  const getGridTemplate = () => {
    switch (layout.layout) {
      case '2-pane-horizontal':
        return 'repeat(2, 1fr)'
      case '3-pane':
        return 'repeat(3, 1fr)'
      case '4-pane':
        return 'repeat(2, 1fr)'
      default:
        return '1fr'
    }
  }

  return (
    <Box
      className="parallel-view-container"
      sx={{
        display: 'grid',
        gridTemplateColumns: getGridTemplate(),
        gap: layout.showDividers ? 1 : 0,
        height: '100%',
        overflow: 'hidden'
      }}
    >
      {visiblePanes.map((pane, index) => (
        <React.Fragment key={pane.id}>
          <Pane
            config={pane}
            onScroll={(scrollTop) => {
              if (scrollSync.enabled) {
                scrollSynchronizer.current.syncScroll(
                  document.getElementById(`pane-${pane.id}`)!,
                  scrollTop
                )
              }
            }}
          />
          {layout.showDividers && index < visiblePanes.length - 1 && (
            <PaneDivider
              leftPaneId={visiblePanes[index].id}
              rightPaneId={visiblePanes[index + 1].id}
            />
          )}
        </React.Fragment>
      ))}
    </Box>
  )
}

💾 Data Persistence

LocalStorage Schema

interface ParallelViewStorage {
  version: number
  enabled: boolean
  layout: LayoutConfig
  panes: PaneConfig[]
  scrollSync: ScrollSyncConfig
  alignmentConfig: AlignmentConfig
  diffConfig: DiffConfig
  recentVersionCombinations: string[][] // Track popular combos
}

// Key: 'bible-reader:parallel-view'

User Preferences API

// Add to UserPreference model
model UserPreference {
  // ... existing fields
  parallelViewConfig Json?
  favoriteVersionCombinations Json? // [["kjv", "esv"], ["niv", "msg"]]
}

// API endpoint
POST /api/user/preferences/parallel-view
Body: ParallelViewStorage

📅 Implementation Timeline

Week 1: Core Functionality

Day 1-2: Foundation

  • Create context provider
  • Build basic 2-pane layout
  • Implement version selector per pane
  • Add layout switcher (1/2/3 panes)

Day 3-4: Scroll Sync

  • Implement scroll synchronizer
  • Add verse-based sync
  • Add pixel-based sync
  • Test smooth scrolling

Day 5: Resizing & Controls

  • Build resizable dividers
  • Add width adjustment
  • Implement swap versions
  • Test on different screen sizes

Deliverable: Working parallel view with basic features

Week 2: Advanced Features & Polish

Day 1-2: Alignment & Diff

  • Implement verse alignment highlighting
  • Build diff view
  • Add similarity calculations
  • Test with various translations

Day 3-4: Mobile & Responsive

  • Design mobile layout (tabs)
  • Implement swipe navigation
  • Optimize for tablets
  • Test touch gestures

Day 5: Polish & Testing

  • Independent highlighting per pane
  • Performance optimization
  • Bug fixes
  • Documentation

Deliverable: Production-ready parallel Bible view


🚀 Deployment Plan

Pre-Launch Checklist

  • All layouts tested (2/3/4 pane)
  • Scroll sync working smoothly
  • Mobile responsive design complete
  • Performance benchmarks met (<100ms lag)
  • Accessibility audit passed
  • Cross-browser testing complete
  • User documentation created

Rollout Strategy

  1. Beta (Week 1): 10% of users, 2-pane only
  2. Staged (Week 2): 50% of users, all layouts
  3. Full (Week 3): 100% of users

📝 Notes & Considerations

Performance

  • Use virtual scrolling for long chapters
  • Debounce scroll sync (avoid jank)
  • Lazy load panes not in viewport
  • Cache rendered verses
  • Monitor memory usage with multiple panes

Accessibility

  • Maintain keyboard navigation across panes
  • Screen reader support for pane switching
  • Focus management between panes
  • ARIA labels for all controls

Document Version: 1.0 Last Updated: 2025-10-13 Owner: Development Team Status: Ready for Implementation