chore: update opencode commit to 86ffe1ef03d228a21618fd7a35862148fc3d… #401

Job	Run time
Marketplace Packer Validate	7s
Build (macos-latest)	3m 28s
Cargo Package Verify	3m 36s
Format Check	17s
Docker Context Guard	5m 1s
Build (ubuntu-latest)	4m 13s
CLI Parity Tests	0s
	16m 42s

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