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/audits/HIDDENDIDDIALOG_PRE_MIGRATION_AUDIT.md

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+# HiddenDidDialog.vue Pre-Migration Audit
+
+## Component Overview
+- **File**: `src/components/HiddenDidDialog.vue`
+- **Purpose**: Dialog component for displaying hidden DID information and sharing options
+- **Complexity**: Medium (190 lines)
+- **Migration Priority**: High (Components category)
+
+## Current State Analysis
+
+### Phase 1: Database Migration Assessment
+- **Status**: ✅ NOT NEEDED
+- **Evidence**: No database operations found, only uses passed-in data
+- **Actions Required**: None
+
+### Phase 2: SQL Abstraction Assessment
+- **Status**: ✅ NOT NEEDED
+- **Evidence**: No raw SQL queries found
+- **Actions Required**: None
+
+### Phase 3: Notification Migration Assessment
+- **Status**: ⏳ NEEDS MIGRATION
+- **Issues Found**:
+  - Direct `$notify` call in `copyToClipboard` method
+  - Hardcoded notification message and timeout
+  - No notification helpers initialized
+
+### Phase 4: Template Streamlining Assessment
+- **Status**: ⏳ NEEDS MIGRATION
+- **Issues Found**:
+  - Long CSS class `"bg-blue-500 text-white px-4 py-2 rounded hover:bg-blue-600"` in template
+  - Complex conditional logic that could be extracted
+  - Header comment formatting needs improvement
+
+## Technical Analysis
+
+### Database Operations
+```typescript
+// No database operations found
+// Component only uses passed-in data from props
+```
+
+### Notification Operations
+```typescript
+// Direct $notify call found
+this.$notify(
+  {
+    group: "alert",
+    type: "toast",
+    title: "Copied",
+    text: (name || "That") + " was copied to the clipboard.",
+  },
+  2000,
+);
+```
+
+### Template Complexity
+- **Lines**: 85 lines
+- **Conditionals**: 6 v-if statements
+- **Long CSS Classes**: 1 repeated class pattern
+- **Complex Logic**: DID visibility and sharing logic
+
+### Script Complexity
+- **Lines**: 105 lines
+- **Methods**: 6 methods
+- **Computed Properties**: 0 (opportunity for template streamlining)
+- **Data Properties**: 9 properties
+
+## Migration Plan
+
+### Phase 3: Notification Migration
+1. **Add Notification Helpers**
+   - Initialize notification helpers in `created()`
+   - Replace direct `$notify` call with helper method
+   - Use notification constants for messages
+
+2. **Update Notification Patterns**
+   - Extract notification message to constants
+   - Use timeout constants instead of hardcoded values
+
+### Phase 4: Template Streamlining
+1. **Extract Long CSS Classes**
+   - Extract button styling to computed property
+   - Ensure consistent styling across component
+
+2. **Improve Documentation**
+   - Fix header comment formatting
+   - Enhance method documentation
+
+3. **Template Optimization**
+   - Review conditional logic for potential extraction
+   - Ensure proper class binding usage
+
+## Estimated Migration Time
+- **Phase 3**: 2-3 minutes
+- **Phase 4**: 2-3 minutes
+- **Total Time**: 4-6 minutes
+
+## Risk Assessment
+- **Low Risk**: Pure UI component with no database changes
+- **No Breaking Changes**: Notification and template improvements only
+- **No Performance Impact**: Cosmetic and notification changes only
+
+## Success Criteria
+- [ ] Notification helpers properly initialized
+- [ ] Direct $notify call replaced with helper method
+- [ ] Notification constants used for messages
+- [ ] Long CSS classes extracted to computed properties
+- [ ] Header comment formatting improved
+- [ ] Template readability enhanced
+- [ ] Linting passes with no errors
+- [ ] Component functionality preserved
+
+## Migration Notes
+- Component is well-structured but needs notification modernization
+- Template streamlining will improve maintainability
+- No functional changes required beyond notification improvements
+
+---
+
+**Audit Date**: 2024-12-19
+**Auditor**: Migration System
+**Status**: Ready for Phase 3 & 4 migration