feat:phase 10 - LLM guardails (input + output protection)

[DevDoshi19]

Question
   ↓
[input_guardrail]  → blocked? → return warning immediately
   ↓
[classify]
   ↓
[retrieve]
   ↓
[context_guard]
   ↓
[generate]
   ↓
[output_guardrail] → flagged? → replace with safe response
   ↓
[confidence]
   ↓
Answer

[DevDoshi19]

Solving The RAGAS version Error with LangChain