a421d1d688
The constant and its MCP tool name ("allow" → "egress-allow") were the
only supervise tools without an egress-scoped identifier, despite the
tool being egress-only (routes.yaml payload, COMPONENT_FOR_TOOL maps
it to "egress", always grouped with TOOL_EGRESS_BLOCK). The rename
brings it in line with TOOL_EGRESS_BLOCK and TOOL_EGRESS_TOKEN_ALLOW,
and adds TOOL_EGRESS_ALLOW and TOOL_EGRESS_BLOCK to __all__ (both were
previously absent).