* feat: add browser pane element picker
Port the browser pane from PR #198 and route picked elements through workspace attachments so the context follows every agent composer in a workspace.
Co-authored-by: Jason Kneen <jason.kneen@bouncingfish.com>
* docs: document electron platform overlays
* fix: harden browser pane navigation
* fix: polish browser tab interactions
* fix: route browser pane focus shortcuts
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Co-authored-by: Jason Kneen <jason.kneen@bouncingfish.com>