Merge origin/master into web-ui-mcp
Resolve conflicts keeping MCP tool support:
- CMakeLists.txt: keep server-ws/mcp-stdio sources
- server-models: adopt master's host+port proxy API, add scheme_host_port overload for MCP HTTPS
- webui: take master's restructured components, re-integrate MCP tool calling in chat store
- eslint/vite/utils/settings: merge both sides' additions
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
