Docs: Add documentation for the vapor mode feature

content/2.how-to guides/vapor-mode.md

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+---
+title: "Vapor Mode: Temporary Chat Sessions"
+description: Perfect for short-term interactions, allows for private, one-off conversations
+---
+
+Vapor Mode is designed for users who need quick, temporary interactions with the AI without the concern of data retention. This feature addresses privacy concerns by ensuring that no personal information or conversation history is saved after the session concludes. Whether you’re seeking immediate answers, testing concepts, or just need a brief interaction, Vapor Mode offers a secure and efficient solution for short-term use.
+
+To enable the vapor mode, toggle the vapor mode from the new chat options or using the shortcut for vapor mode.
+
+::image-plain{src="/how-to/vapor-mode/vapor-mode-toggle.png" alt="Vapor Mode Enabled" }
+::
+
+Start chatting in vapor mode where the conversations will not be saved in history and will disappear on disabling the vapor mode.
+
+::image-plain{src="/how-to/vapor-mode/vapor-mode-chat.png" alt="Chat In Vapor Mode" }
+::