Closes the Phase 5 audit partial: the inline card's prop interface now
matches SamplingRequestPanel's, accepting an optional CreateMessageResult
draft instead of a flat scalar. Lets future hook-layer wiring share a
single draft store between the inline card and the full panel.
Rendering:
- No draft → existing layout (request preview, model hints, action
buttons), with the readonly placeholder textarea removed.
- Text draft → 2-line preview of draftResult.content.text (lineClamp 2).
- Image / audio draft → "[Image content]" / "[Audio content]" label,
matching the ContentViewer fallback convention.
Updates the three consumer stories that threaded responseText="" through
(PendingClientRequests, ToolsScreen) — no callback signatures changed.
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>