Remove ReasoningSearch integration from agent

Eliminates the ReasoningSearch module and all related search augmentation logic from ReasoningAgentTemplate. This simplifies the agent by removing Azure AI Search dependencies and associated resource management.

Author: Fr4nc3

src/backend/v4/magentic_agents/reasoning_agent.py

@@ -19,7 +19,6 @@
 
 from v4.magentic_agents.common.lifecycle import MCPEnabledBase
 from v4.magentic_agents.models.agent_models import MCPConfig, SearchConfig
-from v4.magentic_agents.reasoning_search import ReasoningSearch, create_reasoning_search
 from v4.config.agent_registry import agent_registry
 
 
@@ -73,8 +72,6 @@ def __init__(
         self._credential: Optional[DefaultAzureCredential] = None
         self._client: Optional[AzureAIAgentClient] = None
 
-        # Search integration
-        self.reasoning_search: Optional[ReasoningSearch] = None
 
         self.logger = logging.getLogger(__name__)
 
@@ -100,16 +97,6 @@ async def _after_open(self) -> None:
                 self.model_deployment_name
             )
 
-            # Initialize search capabilities if configured
-            if self.search_config:
-                self.reasoning_search = await create_reasoning_search(self.search_config)
-                if self.reasoning_search.is_available():
-                    self.logger.info(
-                        "Initialized Azure AI Search with index '%s'",
-                        self.search_config.index_name
-                    )
-                else:
-                    self.logger.warning("Azure AI Search initialization failed or incomplete config")
 
             # Initialize MCP tools (called after stack is ready)
             await self._prepare_mcp_tool()
@@ -153,10 +140,6 @@ async def _after_open(self) -> None:
     async def close(self) -> None:
         """Close all resources."""
         try:
-            # Close reasoning search
-            if self.reasoning_search:
-                await self.reasoning_search.close()
-                self.reasoning_search = None
 
             # Unregister from registry
             try:
@@ -169,55 +152,6 @@ async def close(self) -> None:
             self._client = None
             self._credential = None
 
-    async def _augment_with_search(self, prompt: str) -> str:
-        """
-        Augment the prompt with relevant search results.
-        
-        Args:
-            prompt: Original user prompt
-            
-        Returns:
-            Augmented instructions including search results
-        """
-        instructions = self.base_instructions
-        
-        if not self.reasoning_search or not self.reasoning_search.is_available():
-            return instructions
-
-        if not prompt.strip():
-            return instructions
-
-        try:
-            # Fetch relevant documents
-            docs = await self.reasoning_search.search_documents(
-                query=prompt,
-                limit=self.max_search_docs
-            )
-            
-            if docs:
-                # Format documents for inclusion
-                doc_context = "\n\n".join(
-                    f"[Document {i+1}]\n{doc}" 
-                    for i, doc in enumerate(docs)
-                )
-                
-                # Append to instructions
-                instructions = (
-                    f"{instructions}\n\n"
-                    f"**Relevant Reference Documents:**\n{doc_context}\n\n"
-                    f"Use the above documents only if they help answer the user's question. "
-                    f"Do not mention the documents unless directly relevant."
-                )
-                
-                self.logger.debug(
-                    "Augmented prompt with %d search documents",
-                    len(docs)
-                )
-        except Exception as ex:
-            self.logger.warning("Search augmentation failed: %s", ex)
-
-        return instructions
-
     def _prepare_tools(self) -> list:
         """
         Prepare tools for reasoning model invocation.