feat: add keyword search fallback for memory queries

feat: integrate memory search into chat command

fix: format tool responses as functionResponse for Gemini

feat: implement Gemini native function calling

fix: Google OAuth credential detection for nested npm packages

fix: remove tool execution spam from chat output

fix: resolve false-positive command failures and Google API 400 errors

feat: transfer Cody's soul from OpenClaw to Nexus

feat: integrate OpenClaw personality into Nexus

feat: OpenClaw memory migration tool

fix: send logs to stderr when --json mode is active

fix: auto-create providers and fallback to plaintext when keyring unavailable

feat: Google Code Assist OAuth integration with dynamic model detection

fix: use generative-language scope for Gemini API OAuth

fix: use correct minimal OAuth scope for free Gemini API