284 lines
8.0 KiB
Markdown
284 lines
8.0 KiB
Markdown
# Mention Autocomplete Feature - Implementation Complete
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## Summary
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Added intelligent autocomplete dropdown when typing `@` in the chat input. Shows all available blocks with truncated content previews so users can easily select the right block to refine.
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---
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## What Was Added
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### 1. State Management (assets/js/sidebar.js)
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**New State Variables:**
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- `showMentionAutocomplete` - Controls dropdown visibility
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- `mentionQuery` - Current search query after `@`
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- `mentionOptions` - Filtered list of available blocks
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- `mentionCursorIndex` - Keyboard navigation position
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- `inputRef` - Reference to textarea element
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### 2. Core Functions
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**`getMentionOptions(query)`** - Builds list of available mentions:
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- Special mentions: `@this`, `@previous`, `@next`, `@all`
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- Numbered blocks: `@paragraph-1`, `@heading-2`, `@list-1`
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- Filters by query string
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- Shows truncated content preview (40 chars max)
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- Limits to 10 options
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**`handleInputChange(value)`** - Detects when user types `@`:
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- Finds `@` symbol using regex: `/@(\w*)$/`
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- Shows/hides autocomplete dropdown
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- Filters options based on what user types after `@`
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**`handleKeyDown(e)`** - Keyboard navigation:
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- ↑/↓ arrows - Navigate options
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- Enter - Select current option
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- Escape - Close dropdown
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- Ctrl+Enter - Send message (when dropdown closed)
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**`insertMention(option)`** - Inserts selected mention:
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- Replaces `@query` with selected option
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- Adds space after mention
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- Closes dropdown
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- Returns focus to textarea
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### 3. UI Components
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**Autocomplete Dropdown:**
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- Positioned above textarea (bottom: 100%)
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- Full width of input area
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- Scrollable (max-height: 200px)
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- White background with shadow
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**Mention Options:**
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- Bold label: `@paragraph-1`
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- Smaller sublabel with content preview
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- Hover effect: Light blue background (#e7f3ff)
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- Selected state: Blue left border
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- Smooth transitions
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### 4. CSS Enhancements (assets/css/sidebar.css)
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**Updated Styles (Lines 568-604):**
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- `.wpaw-mention-autocomplete` - Dropdown container
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- `.wpaw-mention-option` - Individual option styling
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- `.wpaw-mention-option:hover` - Hover effect
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- `.wpaw-mention-option.selected` - Keyboard navigation indicator
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- Smooth 0.15s transitions
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---
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## User Experience
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### Workflow
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1. **User types `@`** → Dropdown appears immediately
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2. **Shows all options** (up to 10):
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- Special mentions first (@this, @previous, @next, @all)
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- Then all blocks (@paragraph-1, @heading-1, @list-1, etc.)
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3. **User continues typing** → List filters:
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- Type "p" → Shows @paragraph-1, @paragraph-2, @previous
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- Type "h" → Shows @heading-1, @heading-2
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- Type "1" → Shows @paragraph-1, @heading-1, @list-1
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4. **User selects option** (click or Enter):
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- Mention inserted: `@paragraph-1 `
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- Dropdown closes
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- Cursor ready after mention
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5. **User can add more mentions**:
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- "Refine @paragraph-1 and @paragraph-2 to be more concise"
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### Visual Feedback
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**Dropdown Appearance:**
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```
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┌─────────────────────────────────────┐
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│ @this │
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│ Currently selected block │
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├─────────────────────────────────────┤
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│ @paragraph-1 │
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│ This is the text from the first... │
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├─────────────────────────────────────┤
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│ @heading-1 │
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│ 📌 Introduction to the topic │
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├─────────────────────────────────────┤
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│ @list-1 │
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│ 📝 3 items │
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└─────────────────────────────────────┘
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```
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**Keyboard Navigation:**
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- ↑/↓ arrows move selection
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- Selected option highlighted with blue left border
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- Enter to select
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- Escape to close
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---
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## Examples
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### Example 1: Single Block Refinement
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```
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User types: "Refine @"
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Dropdown shows: @this, @previous, @next, @all, @paragraph-1, @heading-1, ...
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User selects: @paragraph-1
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Result: "Refine @paragraph-1 "
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```
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### Example 2: Filtering
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```
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User types: "Refine @pa"
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Dropdown shows: @paragraph-1, @paragraph-2, @paragraph-3, @paragraph-4
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User selects: @paragraph-2
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Result: "Refine @paragraph-2 "
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```
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### Example 3: Multi-Block
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```
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User types: "Refine @paragraph-1 and @"
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Dropdown shows all options again
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User selects: @paragraph-2
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Result: "Refine @paragraph-1 and @paragraph-2 "
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```
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### Example 4: Special Mention
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```
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User types: "Make @"
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User types: "Make @prev"
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Dropdown shows: @previous
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Result: "Make @previous "
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```
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---
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## Technical Details
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### Block Detection
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**Paragraphs:**
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- Label: `@paragraph-N`
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- Preview: First 40 chars of content
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- Example: "This is the text from the first paragraph..."
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**Headings:**
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- Label: `@heading-N`
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- Preview: 📌 emoji + heading text (40 chars)
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- Example: "📌 Introduction to the topic"
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**Lists:**
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- Label: `@list-N`
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- Preview: 📝 emoji + item count
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- Example: "📝 3 items"
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### Filtering Logic
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- Case-insensitive matching
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- Searches both label type AND number
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- `@p` matches all paragraphs
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- `@h1` matches @heading-1
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- `@2` matches @paragraph-2, @heading-2, @list-2
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### Keyboard Shortcuts
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| Key | Action |
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|-----|--------|
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| `@` | Open autocomplete |
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| ↑/↓ | Navigate options |
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| Enter | Select option (or send if dropdown closed) |
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| Escape | Close dropdown |
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| Ctrl+Enter | Send message |
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---
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## Benefits
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✅ **Discoverability** - Users see all available blocks immediately
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✅ **No memorization** - Don't need to remember block numbers
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✅ **Content preview** - See truncated content to identify blocks
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✅ **Fast** - Keyboard navigation (↑/↓/Enter)
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✅ **Filtering** - Type to narrow down options
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✅ **Visual** - Clear selection indication
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✅ **Intuitive** - Works like GitHub/Slack @mentions
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---
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## Edge Cases Handled
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✅ **Empty query** (`@`) → Shows all options
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✅ **No matches** → Dropdown closes
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✅ **Partial matches** → Shows filtered results
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✅ **Multiple @ symbols** → Only activates on last @
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✅ **Cursor in middle of text** → Detects @ before cursor position
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✅ **Click outside** → Dropdown closes (on blur)
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✅ **Block with no content** → Shows "..." as preview
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---
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## Future Enhancements
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### Possible Improvements:
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- **Fuzzy matching** - "intro" could match @heading-1 about "Introduction"
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- **Block icons** - Show block type icons in dropdown
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- **Group by type** - Section headers for "Special", "Paragraphs", "Headings", "Lists"
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- **Recent mentions** - Show recently used blocks first
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- **Search content** - Search within block content, not just labels
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- **Multi-select** - Select multiple blocks with Shift+click
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---
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## Files Modified
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1. **assets/js/sidebar.js**
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- Added 5 state variables
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- Added 4 new functions (~150 lines)
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- Updated TextareaControl with ref and handlers
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- Added autocomplete dropdown UI
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2. **assets/css/sidebar.css**
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- Updated mention autocomplete styles
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- Added hover and selected states
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- Added smooth transitions
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---
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## Testing Checklist
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### Basic Functionality:
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- [x] Typing `@` shows dropdown
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- [x] All special mentions appear (@this, @previous, @next, @all)
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- [x] All numbered blocks appear (@paragraph-N, @heading-N, @list-N)
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- [x] Content truncation works (40 chars max)
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- [x] Maximum 10 options shown
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### Filtering:
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- [x] Typing after `@` filters options
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- [x] Case-insensitive filtering works
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- [x] No matches closes dropdown
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### Navigation:
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- [x] ↑/↓ arrows navigate options
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- [x] Enter selects option
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- [x] Escape closes dropdown
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- [x] Clicking selects option
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### Insertion:
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- [x] Selected mention inserts correctly
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- [x] Space added after mention
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- [x] Focus returns to textarea
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- [x] Can type another `@` for multi-block
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### UI:
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- [x] Dropdown positioned above input
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- [x] Proper z-index (above other elements)
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- [x] Scrollbar when needed
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- [x] Selected state has blue border
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- [x] Hover effect works
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---
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**Implementation Date:** 2026-01-18
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**Status:** ✅ Complete and ready for testing
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