When running llm command, `Not Yet Implemented.`message is printed for every alternate invocation

[kracekumar]

Issue: Not Yet Implemented message is printed alternatively while using llm+ command.

Setup

1. OS: Mac OSX
2. Python: 3.12.8
3. Command: uv run litecli test.db
4. Terminal: Ghostty
5. Shell: fish

Trimmed Output

 uv run litecli /Users/kracekumar/code/mcp-chatbot/test.db
LiteCli: 0.1.dev429+g5be771e (SQLite: 3.47.1)
GitHub: https://github.com/dbcli/litecli
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "Suggest 2 ways to find duplicate rows in the people table"
LLM took 43.58 seconds.
...
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ models default codellama:latest
Not Yet Implemented.
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ models default codellama:latest
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "Suggest 2 ways to find duplicate rows in the people table"
LLM took 23.71 seconds.
...
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ models default codellama:qwen2.5:latest
Not Yet Implemented.
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ models default codellama:qwen2.5:latest
Error: Unknown model: codellama:qwen2.5:latest
Command llm failed with exit code 1.
...
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ models default qwen2.5:latest
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "Suggest 2 ways to find duplicate rows in the people table"
LLM took 25.18 seconds.
...
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "Suggest best way to find best record in the table"
Not Yet Implemented.
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "Suggest best way to find best record in the table"
LLM took 24.91 seconds.
...
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "select top 5 visited websites"
Not Yet Implemented.
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "select top 5 visited websites"
LLM took 12.11 seconds.
...
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "Write a sql to implement foreign key in the people table"
Not Yet Implemented.
/Users/kracekumar/code/mcp-chatbot/test.db> \llm+ "Write a sql to implement foreign key in the people table"
LLM took 30.67 seconds.

• LLM took 43.58 seconds.is only extra statement added to the handle_llm function

[kracekumar]

This PR #213 fixes the issue, so closing the issue.