[iFurySt]

Virtual displays add a system monitor and can alter an existing display arrangement. Add virtualDisplay.enabled, default false, with OPEN_COMPUTER_USE_VIRTUAL_DISPLAY_ENABLED as an explicit environment override.

When disabled, native MCP omits window_placement, JS guidance omits windowPlacement, and covered-window hints stop recommending parking. Stale calls are rejected before app lookup and at the display-creation boundary. Existing restoration and turn/connection cleanup remain available. Windows/Linux omit the unsupported parameter. Standalone plugin installs include the new JS configuration dependency.

Enable with ocu config set virtualDisplay.enabled true; reconnect MCP clients to refresh cached tool schemas. Invalid environment values disable creation.

Validation:

• 381 native tests passed (7 opt-in tests skipped).
• 48 Node REPL/config/CLI and 4 repository Node tests passed, including staged plugin import.
• Native MCP subprocess smoke verified default/false/true schema visibility and rejection of disabled calls without creating displays.
• Windows Go suite and affected Linux schema tests passed; the complete Linux suite fails on macOS identically on unmodified main because its bridge requires Linux.
• make check-docs and git diff --check passed. make check-repo reports governance files already missing from main; no unrelated files or gates were changed.