chore(repo): baseline du fork input-remapper (upstream v2.2.1)

Le dépôt ne contenait que README.md ; ajout de l'intégralité du code
fonctionnel du fork comme socle stable de la branche de release.
L'état runtime d'orchestration (.ideai/) est exclu du suivi.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

inputremapper/injection/numlock.py

@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+# input-remapper - GUI for device specific keyboard mappings
+# Copyright (C) 2025 sezanzeb <b8x45ygc9@mozmail.com>
+#
+# This file is part of input-remapper.
+#
+# input-remapper is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# input-remapper is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with input-remapper.  If not, see <https://www.gnu.org/licenses/>.
+
+
+"""Functions to handle numlocks.
+
+For unknown reasons the numlock status can change when starting injections,
+which is why these functions exist.
+"""
+
+
+import re
+import subprocess
+
+from inputremapper.logging.logger import logger
+
+
+def is_numlock_on():
+    """Get the current state of the numlock."""
+    try:
+        xset_q = subprocess.check_output(
+            ["xset", "q"],
+            stderr=subprocess.STDOUT,
+        ).decode()
+        num_lock_status = re.search(r"Num Lock:\s+(.+?)\s", xset_q)
+
+        if num_lock_status is not None:
+            return num_lock_status[1] == "on"
+
+        return False
+    except (FileNotFoundError, subprocess.CalledProcessError):
+        # tty
+        return None
+
+
+def set_numlock(state):
+    """Set the numlock to a given state of True or False."""
+    if state is None:
+        return
+
+    value = {True: "on", False: "off"}[state]
+
+    try:
+        subprocess.check_output(["numlockx", value])
+    except subprocess.CalledProcessError:
+        # might be in a tty
+        pass
+    except FileNotFoundError:
+        # doesn't seem to be installed everywhere
+        logger.debug("numlockx not found")
+
+
+def ensure_numlock(func):
+    """Decorator to reset the numlock to its initial state afterwards."""
+
+    def wrapped(*args, **kwargs):
+        # for some reason, grabbing a device can modify the num lock state.
+        # remember it and apply back later
+        numlock_before = is_numlock_on()
+
+        result = func(*args, **kwargs)
+
+        set_numlock(numlock_before)
+
+        return result
+
+    return wrapped