What: The MultiEdit tool has been removed entirely
Reason: The Edit tool provides all necessary file editing capabilities, and having both tools caused confusion.
Migration: Use the Edit tool for all file modifications. For multiple edits to the same file, Claude will use Edit multiple times as needed.
Evidence: Variable sH = "MultiEdit" at line 365916, tool registration in arrays at line 428943, prompts mentioning MultiEdit at lines 440925-440941 in v1.0.128 - all removed in v2.0.0