Context manager bug

[skallonis]

1. In backend/core/agentpress/context_manager.py
   line 1380
   I believe

            # Recursive call - will handle its own last_usage update
            return await self.compress_messages(
                result, llm_model, max_tokens, 
                token_threshold // 2, max_iterations - 1, 
                compressed_total, system_prompt, thread_id=thread_id
            )

must change to

            # Recursive call - will handle its own last_usage update
            result = await self.compress_messages(
                result, llm_model, max_tokens, 
                token_threshold // 2, max_iterations - 1, 
                compressed_total, system_prompt, thread_id=thread_id
            )

in order to make possible compressed messages to be stored to db in each recursion beacause original_content_by_id is recalculated and loose previous original_content_by_id.

2. Also in count_tokens, tool_calls and native tools desctiptions are not calculated.

[linear]

SUNA-1084