Add Tag Management GUI to PhotoTagger

Introduce a new tag management interface with a file explorer-like design, allowing users to manage photo tags efficiently. Features include multiple view modes (list, icons, compact), resizable columns, and column visibility management through a right-click context menu. Update README to document the new functionality and usage instructions.

README.md

@@ -175,6 +175,55 @@ python3 photo_tagger.py modifyidentified
 
 This GUI lets you quickly review all identified people, rename them, and temporarily unmatch faces before committing.
 
+### Tag Manager GUI (NEW)
+```bash
+# Open the Tag Management interface
+python3 photo_tagger.py tag-manager
+```
+
+This GUI provides a file explorer-like interface for managing photo tags with advanced column resizing and multiple view modes.
+
+**🎯 Tag Manager Features:**
+- 📊 **Multiple View Modes** - List view, icon view, and compact view for different needs
+- 🔧 **Resizable Columns** - Drag column separators to resize both headers and data rows
+- 👁️ **Column Visibility** - Right-click to show/hide columns in each view mode
+- 🖼️ **Thumbnail Display** - Icon view shows photo thumbnails with metadata
+- 📱 **Responsive Layout** - Adapts to window size with proper scrolling
+- 🎨 **Modern Interface** - Clean, intuitive design with visual feedback
+- ⚡ **Fast Performance** - Optimized for large photo collections
+
+**📋 Available View Modes:**
+
+**List View:**
+- 📄 **Detailed Information** - Shows ID, filename, path, processed status, date taken, face count, and tags
+- 🔧 **Resizable Columns** - Drag red separators between columns to resize
+- 📊 **Column Management** - Right-click headers to show/hide columns
+- 🎯 **Full Data Access** - Complete photo information in tabular format
+
+**Icon View:**
+- 🖼️ **Photo Thumbnails** - Visual grid of photo thumbnails (150x150px)
+- 📝 **Metadata Overlay** - Shows ID, filename, processed status, date taken, face count, and tags
+- 📱 **Responsive Grid** - Thumbnails wrap to fit window width
+- 🎨 **Visual Navigation** - Easy browsing through photo collection
+
+**Compact View:**
+- 📄 **Essential Info** - Shows filename, face count, and tags only
+- ⚡ **Fast Loading** - Minimal data for quick browsing
+- 🎯 **Focused Display** - Perfect for quick tag management
+
+**🔧 Column Resizing:**
+- 🖱️ **Drag to Resize** - Click and drag red separators between columns
+- 📏 **Minimum Width** - Columns maintain minimum 50px width
+- 🔄 **Real-time Updates** - Both headers and data rows resize together
+- 💾 **Persistent Settings** - Column widths remembered between sessions
+- 🎯 **Visual Feedback** - Cursor changes and separator highlighting during resize
+
+**👁️ Column Management:**
+- 🖱️ **Right-click Headers** - Access column visibility menu
+- ✅ **Toggle Columns** - Show/hide individual columns in each view mode
+- 🎯 **View-Specific** - Column settings saved per view mode
+- 🔄 **Instant Updates** - Changes apply immediately
+
 **Left Panel (People):**
 - 🔍 **Last Name Search** - Search box to filter people by last name (case-insensitive)
 - 🔎 **Search Button** - Apply filter to show only matching people
@@ -271,6 +320,12 @@ python3 photo_tagger.py search "Joh"
 python3 photo_tagger.py stats
 ```
 
+### Tag Manager GUI
+```bash
+# Open tag management interface
+python3 photo_tagger.py tag-manager
+```
+
 ## 📊 Enhanced Example Workflow
 
 ```bash
@@ -297,6 +352,9 @@ python3 photo_tagger.py search "Alice"
 
 # 7. Add some tags
 python3 photo_tagger.py tag --pattern "birthday"
+
+# 8. Manage tags with GUI interface
+python3 photo_tagger.py tag-manager
 ```
 
 ## 🗃️ Database
@@ -743,6 +801,7 @@ python3 -m venv venv && source venv/bin/activate && python3 setup.py
 ./run.sh identify --show-faces --batch 10
 ./run.sh auto-match --show-faces
 ./run.sh modifyidentified
+./run.sh tag-manager
 ./run.sh stats
 
 # Daily usage - Option 2: Manual venv activation (GUI-ENHANCED)
@@ -752,5 +811,6 @@ python3 photo_tagger.py process --limit 50
 python3 photo_tagger.py identify --show-faces --batch 10  # Opens GUI
 python3 photo_tagger.py auto-match --show-faces          # Opens GUI
 python3 photo_tagger.py modifyidentified                  # Opens GUI to view/modify
+python3 photo_tagger.py tag-manager                       # Opens GUI for tag management
 python3 photo_tagger.py stats
 ```