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/user.py

@@ -0,0 +1,71 @@
+# -*- 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/>.
+
+
+"""Figure out the user."""
+
+
+import getpass
+import os
+import pwd
+
+
+class UserUtils:
+    @staticmethod
+    def get_user():
+        """Try to find the user who called sudo/pkexec."""
+        try:
+            return os.getlogin()
+        except OSError:
+            # failed in some ubuntu installations and in systemd services
+            pass
+
+        try:
+            user = os.environ["USER"]
+        except KeyError:
+            # possibly the systemd service. no sudo was used
+            return getpass.getuser()
+
+        if user == "root":
+            try:
+                return os.environ["SUDO_USER"]
+            except KeyError:
+                # no sudo was used
+                pass
+
+            try:
+                pkexec_uid = int(os.environ["PKEXEC_UID"])
+                return pwd.getpwuid(pkexec_uid).pw_name
+            except KeyError:
+                # no pkexec was used or the uid is unknown
+                pass
+
+        return user
+
+    @staticmethod
+    def get_home(user):
+        """Try to find the user's home directory."""
+        return pwd.getpwnam(user).pw_dir
+
+    # An odd construct, but it can't really be helped because this was done as an
+    # afterthought, after I learned about proper object-oriented software architecture.
+    # TODO Eventually, UserUtils should be constructed and injected as a UserService,
+    #  which then initializes stuff.
+    user = get_user()
+    home = get_home(user)