Add new SDK methods and enhance documentation

[Adityav369]

No description provided.

[jazzberry-ai]

Bug Report

Name	Severity	Example test case	Description
Potential Injection Vulnerability in search_documents	High	Call search_documents with query '; DROP TABLE documents; --'	The search_documents method might be vulnerable to injection if the query parameter is not properly sanitized, potentially leading to unauthorized data access or modification.

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