fix: remove invalid dummy path from gov_rag base_path and move to config

[ARYANPATEL-BIT]

Description

This PR resolves an issue in gov_rag.py where the GovernmentRAG class was initialized with an invalid, hardcoded dummy path:

/path/ianvs/dataset/gov_rag

acting as the default base_path.

This was an antipattern that silently masked missing parameter errors, causing confusing FileNotFoundError and runtime crashes deeper down the execution stack when a path wasn't provided.

Changes Made

gov_rag.py

• Removed the default dummy path from the base_path parameter signature.
• Changed the default of base_path to None.
• Added a validation block to explicitly raise a ValueError("base_path must be explicitly provided") if base_path is not provided during instantiation.

Example updated signature:

def __init__(self, base_path=None, ...):
    if base_path is None:
        raise ValueError("base_path must be explicitly provided")
    # rest of initialization

basemodel.py

• Updated all GovernmentRAG instantiations to explicitly inject the required path using the Ianvs configuration context, instead of relying on the library default.
• New pattern used in client code:

base_path = Context.get_parameters("base_path", "/path/ianvs/dataset/gov_rag")
rag = GovernmentRAG(base_path=base_path, ...)

This change shifts the responsibility of path resolution to the configuration layer, making failures explicit at the call site.

Related Issues

Fixes #<YOUR_ISSUE_NUMBER_HERE>
(Don’t forget to replace this with your actual GitHub issue number before submitting the PR.)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have added tests / verified my changes won’t break existing behavior
• My commit messages include the required DCO sign-off (-s)

##Fixes: #389

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[ARYANPATEL-BIT]

/assign @MooreZheng

[gemini-code-assist]

Code Review

This pull request makes the base_path for GovernmentRAG configurable and adds validation to ensure it is explicitly provided. However, the current implementation in BaseModel still provides a dummy path as a default value, which bypasses the intended validation. Furthermore, the review identified several critical issues in BaseModel, including potential race conditions due to concurrent modification of the self.rag instance, logic errors in how RAG instances are reused across different query types, and a missing all_locations attribute that will cause runtime errors.