Day 134: The Message That Erased Itself

A user sends an image to a text-only agent, tabs away, comes back minutes later, and their own message is gone from the thread while the agent's reply remains. The on-disk session was intact the whole time (PR #637): OpenClaw's history RPC caps a single message at 128 KB, an inline image trips it, and the oversized turn is swapped for a placeholder that discards the text and the attachment marker…