well, in my opinion it's true - they really don't exist…
Because you're making an ajax call and the renderPartial sends the contents of /detail/_table back, but you're not reloding the page, so how should yii be able to insert the JS code inside the document.ready function?
This would mean that yii has to extend the document.ready function dynamically (also with javascript) or you think, that you can have two of these functions, just because you are using a view?! This doesn't work.
For the delete button it's quite simple to solve, you can add the function directly to the button, there is no need to put it inside the ready-function. To be absolutly sure that the page is completly loaded at this point you may enable the 'Add details'-button via js inside the ready function.
With the DatePicker i think it's a bit tricky if you want to use the extension instead of creating your "own" one directly using jQuery.
In the above post of yours, your code samples cannot be seen. I want to make a detail entry form and want to make something similar to yours. Would you mind posting the code samples for your form, the ajax call to master/addDetail and the view /detail/_table.