Fix context size reporting

[kovtcharov]

Fix the following error, example workflow here.

tests/test_summarizer.py::TestSummarizer::test_invalid_style_raises [2026-01-24 02:26:35] | WARNING | gaia.llm.lemonade_manager.ensure_ready | lemonade_manager.py:207 | Lemonade running with 0 tokens, but 32768 requested. Restart with: lemonade-server serve --ctx-size 32768
PASSED
⚠️  Context size below recommended.
   Current: 0 tokens, Required: 32768 tokens
   To fix this issue:
   1. Stop the Lemonade server (if running)
   2. Restart with: lemonade-server serve --ctx-size 32768