Open the Iris chat when Show me is clicked on the nudge banner

[Predixx]

Observed

Clicking Show me on the nudge banner in the Artemis view reveals the hint, but the Iris chat view does not open. The student has to open the chat manually to read the full hint.

Expected

Show me is the student's explicit request to see the hint. The click should open (or focus) the Iris chat and scroll to the delivered message, on both banner moments (active announcement and offer).

Notes

Seen on the Extension Development Host while capturing thesis screenshots (Hard Java Exercise, proactive level More).

[Predixx]

Fixed via #361 (squash-merged into feat/struggle-v3-integration). The active-announcement banner already opened the chat; the fix wires the same chat focus for the offer banner's accept action ("Show me" / "I need more help"), so both banner moments now open the Iris chat. Reaches dev/main with the rest of the struggle branch via #335.