.cursor/rules, Better Codebase Understanding, New Tab Model

• .cursor/rules: Users can write several repository-level rules to disk in the.cursor/rules directory. The Agent will automatically choose which rule to follow.
• Deepseek models: Deepseek R1 and Deepseek v3 are supported in 0.45 and 0.44. You can enable them in Settings > Models. We self-host these models in the US.
• Summarize Previous Composers: When conversations grow too long, you can start a new conversation while referencing the previous one.
• Agent sees recent changes: The agent can use a tool to see your recent changes. It also sees changes made between user messages.
• Better Codebase Understanding: We've trained a new model for Codebase Understanding. We'll be rolling it out to all users on 0.45 in the coming week.
• Fusion Model: We've trained a new Tab Model that is substantially better at jumps and long context. We'll also be rolling this out to users shortly.
• Optional Long Context: When tagging long files, users have the option to request a larger context window with premium models. This will use more fast requests.

UPDATE (0.45.1-0.45.11): Fixes issue with older agent conversations, indexing stability, downloading incorrect extension versions, missing package on windows, crash on opening long composer sessions, latency on pasting code.Also adds MCP support, team-configurable blocklists, fixes Composer stuck on generating issue for some windows builds, exit code 5 crashes, and improves MCP UI. Also several improvements to memory usage.

UPDATE (0.45.12-13): Update infrastructure improvements. The F1 > "Check for Updates" command should now work.

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Agent Improvements, Yolo Mode, Cursor Tab Update