I understand that but I am not asking a full integration, as it is, you already have rtf scan style, which inserts {Author name, title, year} please correct me if I am wrong,

The RTF-scan markers are explained here.

and the title there for identifying the which citation is going to be

It's not a title (as explained in the page I mentioned above), but yes, basically.

and as a result when you scan the document you get the list of references in (author name, title, year) and at the bottom the list of bibliography.

The citation style is configurable, but yes, basically.

why can you not get rid of the title while you scan it

The entire marker is replaced. What it gets replaced with depends on the citation style you choose.

or I also tried odf scan you are providing an identifier code within the {} marks and I believe these are the code files written by the zotero experts.

I don't know anyone who generates these by hand. The ODF-scan page explains how to insert these under the section Inserting Citation Markers.

they all works apparently. my questions is here why cant we have some thing combination of these two style that works with scrivener?

Combine in what way? Works with Scrivener in what way?

or to the point with any rtf documents?

Combine how?

and why do you need a full integration with scrivener?

I don't, but that's what this thread started off with.

I have read some where within your blogs someone saying that zotero works only with word, is that true?

No. Zotero works with Word and Libreoffice natively, and with bibtex toolchains for example.

in this case, I am an old fashion person, I used type writer for my thesis, did not use word or zotero either,

I doubt Zotero will be integrating with mechanical typewriters ;)

but if someone claims being open source

Which Zotero is

and public programming

I take it you mean by this that it's open source, so yes

making a little change in the style files should not be difficult to make

This has nothing to do with Zotero being open source, but this is where you introduce a new question it seems, but one that doesn't match the thread title "Zotero picker for Scrivener (Windows)". Here you ask about the CSL styles, but these are used by many programs, both open source and closed source. If you want a modified style (assuming what you want is not already available at the Zotero Style Repository), it'd be most efficient if you provide a sample with the description of what you'd want modified.

people benefit from the huge creation of Zotero..I always tried these open source softwares..always the successful and useful ones after gathered many followers sold to bigger companies either they changed name and re-released or completely disappears from earth.. here is my another question: is zotero came to this point?

No, and it's unlikely to end up there.

BTW, long, run-on sentences are really hard to read and make it harder to address your questions.