Deduplicate unsafe-chain scan results

[rbitr]

Currently duplicate unsafe chains will often be detected, example below. The tool should only report the longest such chain

Location: ../demo_scans/GenAI-Showcase/apps/local-rag-pdf/rag_module.py:181
Message: Untrusted input 'query' flows to LLM API call without proper sanitization
Tags: security, sanitization, prompt-engineering
Suggestion: Implement input validation or sanitization before passing untrusted input to LLM. Consider using an allow-list approach.
Context:
  source: query
  sink: llm_call_181
  path: query -> retrieved_docs -> formatted_input -> llm_call_181

Issue #11: chain-unsafe-input (high)
Location: ../demo_scans/GenAI-Showcase/apps/local-rag-pdf/rag_module.py:181
Message: Untrusted input 'question' flows to LLM API call without proper sanitization
Tags: security, sanitization, prompt-engineering
Suggestion: Implement input validation or sanitization before passing untrusted input to LLM. Consider using an allow-list approach.
Context:
  source: question
  sink: llm_call_181
  path: question -> retrieved_docs -> formatted_input -> llm_call_181

Issue #12: chain-unsafe-input (high)
Location: ../demo_scans/GenAI-Showcase/apps/local-rag-pdf/app.py:61
Message: Untrusted input 'user_input' flows to LLM API call without proper sanitization
Tags: security, sanitization, prompt-engineering
Suggestion: Implement input validation or sanitization before passing untrusted input to LLM. Consider using an allow-list approach.
Context:
  source: user_input
  sink: llm_call_61
  path: user_input -> llm_call_61

Issue #13: chain-unsafe-input (high)
Location: ../demo_scans/GenAI-Showcase/apps/local-rag-pdf/app.py:61
Message: Untrusted input 'user_input' flows directly to LLM API call without proper sanitization
Tags: security, sanitization, prompt-engineering
Suggestion: Implement input validation or sanitization before passing untrusted input to LLM. Consider using an allow-list approach.
Context:
  source: user_input
  sink: llm_call_61
  path: user_input -> llm_call_61