feat: Add debug logging for Flexible field diagnosis (#4)

[iamgerwin]

Summary

Added comprehensive debug logging to help diagnose why the dependency container is not working inside Flexible fields.

Debug Logs Added

The following console.log statements have been added (all prefixed with [NovaDependencyContainer]):

1. mounted(): Logs field configuration and dependencies
2. detectFlexibleContextOnMount(): Logs context detection attempts
3. watchDependentFields(): Logs event subscription
4. handleFieldChanged(): Logs received events with full details
5. checkDependencies(): Logs dependency evaluation and visibility result

How to Use

After updating to v1.0.9:

1. Open browser Developer Tools (F12)
2. Go to Console tab
3. Filter by NovaDependencyContainer
4. Change the Type field to "Contact Us"
5. Share the console output

Expected Console Output

When working correctly, you should see:

[NovaDependencyContainer] Mounted with field: {...}
[NovaDependencyContainer] Dependencies: [{field: 'type', value: 'Contact Us'}]
[NovaDependencyContainer] Watching for field-changed events
[NovaDependencyContainer] field-changed event received: {...}
[NovaDependencyContainer] Setting isVisible to: true

Fixes #4