Lataa OpenFang 0.3.42

Fix Gemini tool schema rejection (#483) + temperature fix + OpenRouter free models + Claude Code CLI fix
Gemini schema fix (#483):
Gemini rejects JSON Schema fields like $defs, $ref, additionalProperties, default, title, $id, $comment, examples. The schema normalizer now strips all of these and resolves $ref references by inlining definitions from $defs. This fixes "400 INVALID_ARGUMENT" errors on Gemini agent turns with tools/MCP enabled. 3 new tests.
Temperature fix (v0.3.41):
Reasoning models (gpt-5-mini, o1, o3, o4) reject custom temperature. Driver now omits it for these models with runtime fallback retry. 11 new tests.
OpenRouter free models (v0.3.41):
Added 6 free model variants to the catalog: gemma-2-9b-it:free, llama-3.1-8b-instruct:free, qwen-2.5-7b-instruct:free, mistral-7b-instruct:free, zephyr-7b-beta:free, deepseek-r1:free.
Claude Code CLI fix (v0.3.40):
Replaced env_clear() with targeted env_remove() so Node.js runtime works. Removed --dangerously-skip-permissions. Actionable error messages.
Tool schema fix (#481, v0.3.39):
String/null/non-object input_schema values now parsed or defaulted to valid empty schemas.
All live tested with real Groq LLM calls.