Release v3.40.0

[3.40.0] - 2026-01-13

• Add settings search functionality to quickly find and navigate to specific settings (PR #10619 by @mrubens)
• Improve settings search UI with better styling and usability (PR #10633 by @brunobergher)
• Add standardized stop button for improved task cancellation visibility (PR #10639 by @brunobergher)
• Display edit_file errors in UI after consecutive failures for better debugging feedback (PR #10581 by @daniel-lxs)
• Improve error display styling and visibility in chat messages (PR #10692 by @brunobergher)
• Improve stop button visibility and streamline error handling (PR #10696 by @brunobergher)
• Fix: Omit parallel_tool_calls when not explicitly enabled to prevent API errors (#10553 by @Idlebrand, PR #10671 by @daniel-lxs)
• Fix: Encode hyphens in MCP tool names before sanitization (#10642 by @pdecat, PR #10644 by @pdecat)
• Fix: Correct Gemini 3 thought signature injection format via OpenRouter (PR #10640 by @daniel-lxs)
• Fix: Sanitize tool_use IDs to match API validation pattern (PR #10649 by @daniel-lxs)
• Fix: Use placeholder for empty tool result content to fix Gemini API validation (PR #10672 by @daniel-lxs)
• Fix: Return empty string from getReadablePath when path is empty (PR #10638 by @daniel-lxs)
• Optimize message block cloning in presentAssistantMessage for better performance (PR #10616 by @ArchimedesCrypto)