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/exceptions.py

@@ -0,0 +1,65 @@
+# -*- 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/>.
+
+
+"""Exceptions specific to inputremapper."""
+
+
+class Error(Exception):
+    """Base class for exceptions in inputremapper.
+
+    We can catch all inputremapper exceptions with this.
+    """
+
+
+class UinputNotAvailable(Error):
+    """If an expected UInput is not found (anymore)."""
+
+    def __init__(self, name: str):
+        super().__init__(f"{name} is not defined or unplugged")
+
+
+class EventNotHandled(Error):
+    """For example mapping to BTN_LEFT on a keyboard target."""
+
+    def __init__(self, event):
+        super().__init__(f"Event {event} can not be handled by the configured target")
+
+
+class MappingParsingError(Error):
+    """Anything that goes wrong during the creation of handlers from the mapping."""
+
+    def __init__(self, msg: str, *, mapping=None, mapping_handler=None):
+        self.mapping_handler = mapping_handler
+        self.mapping = mapping
+        super().__init__(msg)
+
+
+class InputEventCreationError(Error):
+    """An input-event failed to be created due to broken factory/constructor calls."""
+
+    def __init__(self, msg: str):
+        super().__init__(msg)
+
+
+class DataManagementError(Error):
+    """Any error that happens in the DataManager."""
+
+    def __init__(self, msg: str):
+        super().__init__(msg)