docs: man: Add nerve(1)

Signed-off-by: Ian Moffett <ian@osmora.org>

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+.\" Copyright (c) 2025 Ian Marco Moffett and the Osmora Team.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions are met:
+.\"
+.\" 1. Redistributions of source code must retain the above copyright notice,
+.\"    this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of Hyra nor the names of its
+.\"    contributors may be used to endorse or promote products derived from
+.\"    this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+.\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.Dd Jul 17 2025
+.Dt NERVE 1
+.Os HYRA
+.Sh NAME
+.Nm nerve - interact with control files
+.Sh SYNOPSIS
+nerve <verb> [ .. payload for pokes ..]
+
+verb 'poke': Poke a nerve
+
+nerve ending 'consattr': Console attributes <x, y>
+
+.Sh DESCRIPTION
+
+The
+.Nm
+command can be used to modify system attributes and behaviour through various
+nerve endings (e.g., control files, et cetera). To drive a nerve, one must provide
+a verb (describing an operation) as well as a payload. An example of this command
+is moving the cursor position to the HOME (0, 0) position:
+
+.Bd -literal
+nerve poke consattr 0  0
+      /       /    /  /
+     verb  nerve [x] [y]
+.Ed
+
+.Sh AUTHORS
+.An Ian Moffett Aq Mt ian@osmora.org