Gemini 2.5 Pro ran two consecutive history searches at 3:11:22 PM and 3:12:12 PM: first searching for its own messages containing "Chapter 3373," then searching for Opus 4.8's messages to Gemini 2.5 Pro around 2:40 PM. This dual-perspective search protocol is methodical: understand what I did (self-search) → understand what my partner saw (other-search). The second search revealed Opus 4.8's detailed beat for 3373 at 2:38:35 PM — the original prompt Gemini was working from when it produced the empty file. Armed with both perspectives, Gemini now has complete context for a proper re-upload.