feat: Implement Modify Identified workflow for person management

This commit introduces the Modify Identified workflow, allowing users to edit person information, view associated faces, and unmatch faces from identified people. The API has been updated with new endpoints for unmatching faces and retrieving faces for specific persons. The frontend includes a new Modify page with a user-friendly interface for managing identified persons, including search and edit functionalities. Documentation and tests have been updated to reflect these changes, ensuring reliability and usability.

tests/test_exif_extraction.py

@@ -0,0 +1,115 @@
+#!/usr/bin/env python3
+"""
+Test script to debug EXIF date extraction from photos.
+Run this to see what EXIF data is available in your photos.
+"""
+
+import sys
+import os
+from pathlib import Path
+from PIL import Image
+from datetime import datetime
+
+# Add src to path
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from src.web.services.photo_service import extract_exif_date
+
+
+def test_exif_extraction(image_path: str):
+    """Test EXIF extraction from a single image."""
+    print(f"\n{'='*60}")
+    print(f"Testing: {image_path}")
+    print(f"{'='*60}")
+    
+    if not os.path.exists(image_path):
+        print(f"❌ File not found: {image_path}")
+        return
+    
+    # Try to open with PIL
+    try:
+        with Image.open(image_path) as img:
+            print(f"✅ Image opened successfully")
+            print(f"   Format: {img.format}")
+            print(f"   Size: {img.size}")
+            
+            # Try getexif()
+            exifdata = None
+            try:
+                exifdata = img.getexif()
+                print(f"✅ getexif() worked: {len(exifdata) if exifdata else 0} tags")
+            except Exception as e:
+                print(f"❌ getexif() failed: {e}")
+            
+            # Try _getexif() (deprecated)
+            old_exif = None
+            try:
+                if hasattr(img, '_getexif'):
+                    old_exif = img._getexif()
+                    print(f"✅ _getexif() worked: {len(old_exif) if old_exif else 0} tags")
+                else:
+                    print(f"⚠️  _getexif() not available")
+            except Exception as e:
+                print(f"❌ _getexif() failed: {e}")
+            
+            # Check for specific date tags
+            date_tags = {
+                306: "DateTime",
+                36867: "DateTimeOriginal",
+                36868: "DateTimeDigitized",
+            }
+            
+            print(f"\n📅 Checking date tags:")
+            found_any = False
+            
+            if exifdata:
+                for tag_id, tag_name in date_tags.items():
+                    try:
+                        if tag_id in exifdata:
+                            value = exifdata[tag_id]
+                            print(f"   ✅ {tag_name} ({tag_id}): {value}")
+                            found_any = True
+                        else:
+                            print(f"   ❌ {tag_name} ({tag_id}): Not found")
+                    except Exception as e:
+                        print(f"   ⚠️  {tag_name} ({tag_id}): Error - {e}")
+            
+            # Try EXIF IFD
+            if exifdata and hasattr(exifdata, 'get_ifd'):
+                try:
+                    exif_ifd = exifdata.get_ifd(0x8769)
+                    if exif_ifd:
+                        print(f"\n📋 EXIF IFD found: {len(exif_ifd)} tags")
+                        for tag_id, tag_name in date_tags.items():
+                            if tag_id in exif_ifd:
+                                value = exif_ifd[tag_id]
+                                print(f"   ✅ {tag_name} ({tag_id}) in IFD: {value}")
+                                found_any = True
+                except Exception as e:
+                    print(f"   ⚠️  EXIF IFD access failed: {e}")
+            
+            if not found_any:
+                print(f"   ⚠️  No date tags found in EXIF data")
+            
+            # Try our extraction function
+            print(f"\n🔍 Testing extract_exif_date():")
+            extracted_date = extract_exif_date(image_path)
+            if extracted_date:
+                print(f"   ✅ Extracted date: {extracted_date}")
+            else:
+                print(f"   ❌ No date extracted")
+                
+    except Exception as e:
+        print(f"❌ Error opening image: {e}")
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("Usage: python test_exif_extraction.py <image_path>")
+        print("\nExample:")
+        print("  python test_exif_extraction.py /path/to/photo.jpg")
+        sys.exit(1)
+    
+    image_path = sys.argv[1]
+    test_exif_extraction(image_path)
+