v2.8.5

Documentation follow-up to v2.8.4.

tap({ duration }) shipped with only the tool's own description updated. Every other surface that teaches the tool still described a tap that cannot hold — including get_usage_guide(topic: "interact"), which ships in the package and is where agents are pointed for workflows.

Long press is now documented in the interact guide, the README, the tool reference, the device-interact skill, and CLAUDE.md: what duration does, what longPress.handlerFound's true/false/null mean, and that elements wired only for onLongPress are deliberately invisible to an ordinary tap. android_long_press is described as the no-React-Native coordinate escape hatch rather than as the way to long press.

No behaviour changes.