Fix: Update Perplexity package and client implementation

requirements.txt

@@ -23,4 +23,4 @@ anthropic>=0.18.1
 duckduckgo-search>=4.4.3
 orjson>=3.9.15
 python-dotenv>=1.0.0
-git+https://github.com/perplexity-ai/perplexity-python.git 
+perplexity>=0.3.0 

src/agents.py

@@ -3,7 +3,7 @@ from typing import Optional
 import openai
 import anthropic
 from duckduckgo_search import DDGS
-from perplexity import Client
+from perplexity.client import PerplexityClient
 
 class Agent:
     def __init__(self, base_model: str = "gpt-3.5-turbo", search_engine: str = "duckduckgo"):
@@ -16,7 +16,7 @@ class Agent:
         elif "claude" in base_model:
             self.claude = anthropic.Anthropic(api_key=os.getenv("ANTHROPIC_API_KEY"))
         elif "sonar" in base_model:
-            self.perplexity = Client(api_key=os.getenv("PERPLEXITY_API_KEY"))
+            self.perplexity = PerplexityClient(api_key=os.getenv("PERPLEXITY_API_KEY"))
 
     def execute(self, message: str, project_name: str) -> Optional[str]:
         try:
@@ -72,7 +72,7 @@ class Agent:
         # Use the mapped model or default to sonar
         model = model_mapping.get(self.base_model, "sonar")
         
-        response = self.perplexity.chat.create_completion(
+        response = self.perplexity.chat.create(
             model=model,
             messages=[{"role": "user", "content": message}]
         )