docs: reorganize documentation structure with 7-item folder limits

- Create logical sub-folder classification for all documentation
- Organize 91 migration files into component-specific folders
- Separate user guides, build system, migration, and development docs
- Maintain maximum 7 items per folder for easy navigation
- Add comprehensive README and reorganization summary
- Ensure all changes tracked in git with proper versioning

Structure:
- user-guides/ (3 items): user-facing documentation
- build-system/ (3 items): core, platforms, automation
- migration/ (6 items): assessments, testing, templates
- development/ (4 items): tools and standards
- architecture/, testing/, examples/ (ready for future docs)

Total: 24 folders created, all within 7-item limits

docs/migration/migration-testing/component-migrations/components/ENTITYICON_MIGRATION.md

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+# EntityIcon.vue Migration Completion
+
+## Migration Summary
+- **Component**: `src/components/EntityIcon.vue`
+- **Migration Type**: Enhanced Triple Migration Pattern - Documentation Enhancement
+- **Migration Date**: 2024-12-19
+- **Migration Time**: 2 minutes (within estimate)
+- **Status**: ✅ COMPLETED SUCCESSFULLY
+
+## Migration Details
+
+### Phase 1: Database Migration
+- **Status**: ✅ NOT NEEDED
+- **Reason**: Pure UI component with no database operations
+- **Actions**: None required
+
+### Phase 2: SQL Abstraction
+- **Status**: ✅ NOT NEEDED
+- **Reason**: No raw SQL queries found
+- **Actions**: None required
+
+### Phase 3: Notification Migration
+- **Status**: ✅ NOT NEEDED
+- **Reason**: No notification system usage found
+- **Actions**: None required
+
+### Phase 4: Template Streamlining
+- **Status**: ✅ NOT NEEDED
+- **Reason**: Simple template with no long CSS classes
+- **Actions**: None required
+
+### Documentation Enhancement
+- **Status**: ✅ COMPLETED
+- **Actions Performed**:
+  - Added comprehensive file-level documentation
+  - Enhanced method documentation with priority order explanation
+  - Improved prop documentation with proper TypeScript typing
+  - Added detailed comments explaining icon generation logic
+  - Enhanced code readability and maintainability
+
+## Technical Changes
+
+### File Header Documentation
+```typescript
+/**
+ * EntityIcon.vue - Icon generation component for contacts and entities
+ *
+ * Generates icons for contacts and entities using either profile images
+ * or DiceBear avatars. Handles CORS image transformation and fallback
+ * to blank square for missing identifiers.
+ *
+ * Features:
+ * - Profile image display with CORS handling
+ * - DiceBear avatar generation for missing images
+ * - Fallback to blank square for missing identifiers
+ * - Dynamic icon sizing
+ * - Contact object integration
+ *
+ * @author Matthew Raymer
+ */
+```
+
+### Class Documentation
+```typescript
+/**
+ * EntityIcon - Icon generation component for contacts and entities
+ *
+ * Generates icons using profile images or DiceBear avatars with
+ * proper CORS handling and fallback mechanisms.
+ */
+```
+
+### Method Documentation
+```typescript
+/**
+ * Generate icon HTML based on available data
+ *
+ * Priority order:
+ * 1. Contact profile image URL
+ * 2. Direct profile image URL
+ * 3. DiceBear avatar using contact DID or entity ID
+ * 4. Blank square SVG as final fallback
+ *
+ * @returns HTML string for the icon
+ */
+```
+
+### Prop Documentation
+```typescript
+/** Contact object containing profile information */
+@Prop()
+contact?: Contact;
+
+/** Entity identifier (overridden by contact.did or profileImageUrl) */
+@Prop({ default: "" })
+entityId!: string;
+
+/** Icon size in pixels */
+@Prop({ default: 0 })
+iconSize!: number;
+
+/** Profile image URL (overridden by contact.profileImageUrl) */
+@Prop({ default: "" })
+profileImageUrl!: string;
+```
+
+## Performance Metrics
+- **Migration Time**: 2 minutes (within 2-3 minute estimate)
+- **Code Quality**: Significantly improved with comprehensive documentation
+- **Maintainability**: Enhanced with clear priority order and explanations
+- **Lint Status**: ✅ Passed with no errors
+
+## Security Audit Checklist
+- ✅ No database operations (no security risks)
+- ✅ No raw SQL queries (no injection risks)
+- ✅ No notification system changes (no security impact)
+- ✅ No template changes (no security impact)
+- ✅ No new dependencies added
+- ✅ No sensitive data handling changes
+- ✅ No authentication/authorization changes
+- ✅ No file system access changes
+- ✅ No network communication changes
+- ✅ No user input processing changes
+
+## Testing Validation
+- ✅ Lint validation passed with no errors
+- ✅ Template syntax validation passed
+- ✅ TypeScript compilation successful
+- ✅ Component structure maintained
+- ✅ Icon generation functionality preserved
+- ✅ CORS handling preserved
+- ✅ Fallback behavior preserved
+
+## Migration Quality Assessment
+- **Code Quality**: Excellent (comprehensive documentation added)
+- **Performance**: No impact (documentation changes only)
+- **Maintainability**: Significantly improved (clear documentation)
+- **Readability**: Significantly improved (detailed comments)
+- **Documentation**: Excellent (comprehensive coverage)
+
+## Post-Migration Status
+- **Component State**: ✅ Fully documented and ready
+- **Dependencies**: ✅ All dependencies compatible
+- **Integration**: ✅ No breaking changes
+- **Testing**: ✅ Ready for human testing
+- **Documentation**: ✅ Comprehensive and complete
+
+## Next Steps
+- ⏳ Ready for human testing
+- ⏳ Update migration progress tracker
+- ⏳ Mark component as migrated in tracking system
+
+## Migration Notes
+- Component was already migration-compliant
+- Focus was on documentation enhancement
+- No functional changes required
+- Migration completed within estimated time
+- Component is now well-documented and maintainable