Add password reset flow, attendee profile enhancements, and spec

- Add forgot_password and reset_password templates and routes
- Enhance profile.html with photo crop/zoom functionality
- Add attendee type management to edit_attendee.html
- Update templates styling and layout consistency
- Document database schema in SPEC.md
- Add CLAUDE.md project guidance

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

init_db.py

@@ -207,6 +207,8 @@ def create_tables():
         "ALTER TABLE attendees ADD COLUMN phone VARCHAR(50) DEFAULT ''",
         "ALTER TABLE attendees ADD COLUMN linkedin VARCHAR(255) DEFAULT ''",
         "ALTER TABLE attendees ADD COLUMN attendee_type_id INT DEFAULT NULL",
+        "ALTER TABLE organizers ADD COLUMN reset_token VARCHAR(64) DEFAULT NULL",
+        "ALTER TABLE organizers ADD COLUMN reset_token_expiry DATETIME DEFAULT NULL",
     ]
 
     try: