New agent settings screen

Available parameters:

• Remember previous conversations — enables or disables memory of past chats with the same contact.
• Conversation memory range — how many previous conversations the agent can access (0 to 10, default 1).
• Maximum message count — message limit per previous conversation the agent considers (0 to 100, default 50). Helps control token usage.
• Use function parallelism per interaction — allows the agent to run multiple functions simultaneously before generating a response.
• Timeout exit ends the thread — if enabled, a function timeout closes the conversation. The conversation restarts from the beginning when returning to the agent.
• Error exit ends the thread — if enabled, an execution error closes the conversation. Useful to prevent the conversation from continuing after critical failures.
• Maximum recursions per interaction — limit on chained function executions before the agent responds (1 to 50, default 10). Prevents loops.