feat(sessions): add getSession method to retrieve specific session

Implement session retrieval functionality in both hook and API client to enable fetching individual sessions by ID

src/renderer/src/api/agent.ts

@@ -12,6 +12,8 @@ import {
   CreateSessionResponseSchema,
   GetAgentResponse,
   GetAgentResponseSchema,
+  GetAgentSessionResponse,
+  GetAgentSessionResponseSchema,
   ListAgentSessionsResponse,
   ListAgentSessionsResponseSchema,
   type ListAgentsResponse,
@@ -154,4 +156,15 @@ export class AgentApiClient {
       throw processError(error, 'Failed to add session.')
     }
   }
+
+  public async getSession(agentId: string, sessionId: string): Promise<GetAgentSessionResponse> {
+    const url = this.getSessionPaths(agentId).withId(sessionId)
+    try {
+      const response = await this.axios.get(url)
+      const data = GetAgentSessionResponseSchema.parse(response.data)
+      return data
+    } catch (error) {
+      throw processError(error, 'Failed to get session.')
+    }
+  }
 }

src/renderer/src/hooks/agents/useSessions.ts

@@ -27,10 +27,19 @@ export const useSessions = (agent: AgentEntity) => {
     [agent.id, client, mutate, t]
   )
 
+  // TODO: including messages field
+  const getSession = useCallback(
+    async (id: string) => {
+      return data?.find((session) => session.id === id)
+    },
+    [data]
+  )
+
   return {
     sessions: data ?? [],
     error,
     isLoading,
-    createSession
+    createSession,
+    getSession
   }
 }