Fix clangd choosing CMakeLists.txt or Makefile as the project root in C and C++ workspaces

Improvements

• CoreAdd permission prompts for GitLab Duo Workflow tool calls instead of auto-running them.@vglafirov
• CoreHide unsupported variants for Big Pickle models.
• TerminalShow an OpenCode Go subscribe prompt when free usage limits are reached.
• TerminalSimplify provider labels in the model and provider pickers.
• DesktopFix terminal connections in same-origin desktop and web app setups.@OpeOginni
• DesktopFix session review and change lists when diff data arrives in inconsistent shapes.
• SDKFix the generated SDK and OpenAPI types for /providers and session shell responses.
• TerminalFix subagents not being clickable until finished
• DesktopRemoved the forced loading delay while the app connects