Update compatibility guide to include SQLAlchemy 2.0.35+ fix for Python 3.14

PYTHON_314_COMPATIBILITY.md

@@ -14,13 +14,17 @@ All dependencies have been updated to ensure full Python 3.14 compatibility. Her
    - Old version: No Python 3.14 prebuilt wheels, compilation failed
    - Fix: PyMuPDF 1.24.0+ has prebuilt wheels for Python 3.14
 
+3. **SQLAlchemy** `2.0.23` → `>=2.0.35`
+   - Old version: Has TypingOnly assertion errors with Python 3.14
+   - Fix: SQLAlchemy 2.0.35+ includes Python 3.14 compatibility fixes
+
 ### Additional Improvements:
 
-3. **email-validator** `2.1.0` → `>=2.1.1`
+4. **email-validator** `2.1.0` → `>=2.1.1`
    - Old version: Was yanked from PyPI due to incorrect Python version metadata
    - Fix: Use 2.1.1 or higher
 
-4. **gunicorn** → **waitress**
+5. **gunicorn** → **waitress**
    - Issue: Gunicorn doesn't work on Windows (Unix-only)
    - Fix: Replaced with waitress, a proper Windows-compatible WSGI server
 
@@ -76,7 +80,7 @@ If you encounter any problems:
 | Flask | 3.0.0 | >=3.0.0 | ✅ Yes |
 | Werkzeug | 3.0.1 | >=3.0.0 | ✅ Yes |
 | Flask-SQLAlchemy | 3.1.1 | >=3.1.1 | ✅ Yes |
-| SQLAlchemy | 2.0.23 | >=2.0.23 | ✅ Yes |
+| **SQLAlchemy** | **2.0.23** | **>=2.0.35** | ✅ **FIXED** |
 | Flask-Login | 0.6.3 | >=0.6.3 | ✅ Yes |
 | Flask-Bcrypt | 1.0.1 | >=1.0.1 | ✅ Yes |
 | Flask-WTF | 1.2.1 | >=1.2.1 | ✅ Yes |