Gemini CLI web search. Added provider-native Google Search support with search indicators and source citations, so Gemini CLI results display grounded links in the UI.

Codex web search compatibility. Added tool wiring and status indicators so Codex CLI web search shows up cleanly in chat output.

Provider-aware tool UI. Tool selection now adapts to Gemini CLI (search-only) and clarifies Copilot tool availability.

Improved math rendering. Better inline LaTeX handling for typical model output using single-dollar delimiters.