The automatic context microcompaction system now produces visible boundary messages when it operates. When tool results are cleared to save context space, a "Context microcompacted" system message is inserted with metadata including token counts saved, number of tool results compacted, and images cleared. Old tool results are replaced with "[Old tool result content cleared]" markers that point to saved files on disk.
Evidence
Microcompaction boundaries (search for "Context microcompacted" and "[Old tool result content cleared]")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
