docs(ecosystem): add opencode-chrome-annotation

[eagleeyejack]

Adds opencode-chrome-annotation to the Plugins table.

It connects a Chrome tab to a local OpenCode session from a side panel: you click an element on the live page, write what should change, and the agent receives the cropped screenshot, the element's exact selector/tag/role/ARIA metadata, and your instruction. Multiple annotations can be queued and sent in one go. Everything runs over 127.0.0.1 to the user's own OpenCode instance - nothing leaves the machine.

The agent side is an npm plugin (opencode-annotate - fork of JodusNodus's opencode-chrome-annotation, renamed and published independently); the extension is GPL-3.0 and a credited fork. Not affiliated with the OpenCode team (note included in the READMEs).

Distinction for review: @plannotator/opencode covers reviewing agent output (plans, diffs); this one annotates the live running UI, which nothing else in the table does today.

Demo: screen recording

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The following comment was made by an LLM, it may be inaccurate:

Potential Duplicate Found

PR #48955: docs(ecosystem): add opencode-chrome-annotation plugin
#48955

This is the exact same plugin being added to the ecosystem plugins table. The current PR (#49478) appears to be a duplicate of PR #48955, which was already opened to add the opencode-chrome-annotation extension to the documentation.

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