DF8105: Devframe Already Mounted

Message

Devframe "{name}" (id "{id}") is already mounted on this hub

Cause

mountDevframe(ctx, def) was called with a devframe whose id already belongs to another devframe mounted on the same hub. Devframes are deduplicated by id, and the definition's duplicationStrategy is 'warn' (the default) or 'throw'.

Fix

Set duplicationStrategy on the definition to choose how duplicates are handled:

• 'warn' (default) — keep the first registration, drop the later one, and emit this warning.
• 'silent' — drop the later one without warning.
• 'throw' — surface duplicates as a thrown error.
• 'duplicate' — let every instance coexist under a disambiguated dock id (my-tool, my-tool-2, …).

Otherwise, remove the redundant mountDevframe call so each devframe is mounted once.

Source

• packages/hub/src/node/mount-devframe.ts — mountDevframe() emits this when a devframe sharing an already-mounted id is mounted and the strategy is not 'duplicate'.