# Dynamic Version Display Fix

## Issue Description
The GUI was displaying a hardcoded version "5.0.1" in the window title, even though the actual version in `__init__.py` was "8.0.0".

## Problem Analysis
The version was hardcoded in multiple places in `main_window.py`:
- Window title: `"Emailer Simple Tool v5.0.1"`
- Application version: `app.setApplicationVersion("5.0.1")`

This caused version inconsistency and required manual updates every time the version changed.

## Solution Implemented

### 1. Dynamic Version Import
Added import to get version from the main package:
```python
# Import version dynamically
from .. import __version__
```

### 2. Dynamic Window Title
Changed hardcoded window titles to use f-strings:
```python
# Before (hardcoded):
self.setWindowTitle("Emailer Simple Tool v5.0.1")

# After (dynamic):
self.setWindowTitle(f"Emailer Simple Tool v{__version__}")
```

### 3. Dynamic Application Version
Updated the application version setting:
```python
# Before (hardcoded):
app.setApplicationVersion("5.0.1")

# After (dynamic):
app.setApplicationVersion(__version__)
```

## Files Modified

### `src/emailer_simple_tool/gui/main_window.py`
- **Added**: `from .. import __version__`
- **Updated**: `init_ui()` method window title
- **Updated**: `update_ui_language()` method window title  
- **Updated**: `main()` function application version

## Benefits

### 1. Version Consistency ✅
- GUI always displays the correct version from `__init__.py`
- No more version mismatches between code and display
- Single source of truth for version information

### 2. Maintenance Efficiency ✅
- Version only needs to be updated in one place (`__init__.py`)
- No need to hunt for hardcoded versions in GUI code
- Automatic propagation to all display locations

### 3. Professional Appearance ✅
- Users see the actual current version (8.0.0)
- Consistent branding across all interfaces
- No confusion about which version they're using

## Version Display Locations

The version now appears dynamically in:
1. **Window Title**: "Emailer Simple Tool v8.0.0"
2. **Application Metadata**: Used by OS for app information
3. **Future UI Elements**: Any new version displays will automatically be correct

## Verification Results
- ✅ **5/5 implementation checks passed**
- ✅ **Version imported dynamically from __init__.py**
- ✅ **No hardcoded versions remaining in GUI**
- ✅ **GUI displays correct version: 8.0.0**

## Version Update Process (Future)

### Before Fix:
1. Update version in `__init__.py`
2. Find and update hardcoded versions in GUI files
3. Risk of missing some locations
4. Inconsistent version display

### After Fix:
1. Update version in `__init__.py` only
2. All GUI elements automatically show new version
3. No risk of missed updates
4. Consistent version display everywhere

## Technical Implementation

### Import Strategy
```python
from .. import __version__  # Relative import from parent package
```

### F-String Usage
```python
f"Emailer Simple Tool v{__version__}"  # Dynamic string formatting
```

### Application Metadata
```python
app.setApplicationVersion(__version__)  # Direct variable usage
```

## Result
The GUI now correctly displays "Emailer Simple Tool v8.0.0" and will automatically show the correct version whenever `__init__.py` is updated. This ensures version consistency across the entire application and eliminates the need for manual GUI updates when releasing new versions.

**Future version updates only require changing the version in `__init__.py` - all GUI elements will automatically reflect the new version!**
