There are probably already IDE integrations so you can make Jira-like strings clickable to the appropriate task, or show a tooltip to hover.

It doesn't even need fucking AI, just regexp and just a configuration, e.g. if your Jira project is called NAI, any word that has the format NAI-[0-9]* should be such a link to https://jira.lookatmenotusingfancyai.com/task/NAI-xx

Edit: then again, Jira tasks can end up being a place for long discussions. If the AI can summarize the end-result/the decisions taken, it would be useful.. but also as a Jira plugin.