v0.2.2

Changes\n\n- Use Ollama /api/tags as the sole model discovery catalog source.\n- Remove unreliable HTML cloud catalog fetching.\n- Keep model-picker selections aligned with the current draft catalog.\n- Apply selections by replacing the catalog instead of appending duplicates.\n- Preserve current-only models in the picker.\n\n验证：105 个测试、构建和 package check 通过。