Propagate default language

[kaftanati]

I’d like to discuss a possible improvement to folder default languages.

I use massCode with a cloud-synced local vault and automated local AI workflows. Snippets come from different sources, so some end up with an incorrect language or Plain Text.

Currently, a folder’s default language is applied only when creating new snippets in that folder. Existing snippets and nested folders keep their current language settings. This is manageable for a few entries, but becomes tedious when correcting many imported or generated snippets.

I initially expected the folder setting to propagate to its contents, but learned that it intentionally applies only to new snippets.

I implemented a possible opt-in bulk-update flow:

• When changing a folder’s default language, show a dialog if the folder contains nested folders or snippets.
• Optionally update the default language of all nested folders.
• Optionally update the language of all snippets in the selected folder and its descendants.

The selected folder’s own default language is always updated; propagation remains explicitly optional.

I find this useful for bulk correction and would appreciate feedback on whether this behavior would be appropriate for the main branch.