Claude requires tool_result in the IMMEDIATELY next message after tool_use.
Existing fixToolPairs() checks global ID presence but not adjacency —
keeping tool_use blocks whose tool_result exists later in the array but
not in the next message, causing 400 errors.
Add fixToolAdjacency() that runs after fixToolPairs() to remove tool_use
blocks where the next message has no matching tool_result.
Pipeline: fixToolPairs → fixToolAdjacency → stripTrailingAssistantOrphanToolUse
Closes#2382
Co-Authored-By: OpenClaude (mimo-v2.5-pro) <openclaude@gitlawb.com>
