duplicated file ref tags when mentioning the same file

[felixzsh]

Description

when the user mentions the same file multiple times in the same prompt (at least i use to do this), the visible ref tags left by the sent prompts shows are duplicated for the same file.

Plugins

No response

OpenCode version

No response

Steps to reproduce

mention the same file multiple times with @ in the prompt box and sent it to see it in the chat with duplicated tag

Screenshot and/or share link

Operating System

omarchy

Terminal

ghostty

[rekram1-node]

/oc dedup them in the tui

[felixzsh]

i actually already have a pr haha im trying to publish it

[opencode-agent]

Created PR #8300

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