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/ipc/shared_dict.py

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+# -*- 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/>.
+
+
+"""Share a dictionary across processes."""
+
+
+import atexit
+import multiprocessing
+import select
+from typing import Optional, Any
+
+from inputremapper.logging.logger import logger
+
+
+class SharedDict:
+    """Share a dictionary across processes."""
+
+    # because unittests terminate all child processes in cleanup I can't use
+    # multiprocessing.Manager
+    def __init__(self):
+        """Create a shared dictionary."""
+        super().__init__()
+
+        # To avoid blocking forever if something goes wrong. The maximum
+        # observed time communication takes was 0.001 for me on a slow pc
+        self._timeout = 0.02
+
+        self.pipe = multiprocessing.Pipe()
+        self.process = None
+        atexit.register(self._stop)
+
+    def start(self):
+        """Ensure the process to manage the dictionary is running."""
+        if self.process is not None and self.process.is_alive():
+            logger.debug("SharedDict process already running")
+            return
+
+        # if the manager has already been running in the past but stopped
+        # for some reason, the dictionary contents are lost.
+        logger.debug("Starting SharedDict process")
+        self.process = multiprocessing.Process(target=self.manage)
+        self.process.start()
+
+    def manage(self):
+        """Manage the dictionary, handle read and write requests."""
+        logger.debug("SharedDict process started")
+        shared_dict = {}
+        while True:
+            message = self.pipe[0].recv()
+            logger.debug("SharedDict got %s", message)
+
+            if message[0] == "stop":
+                return
+
+            if message[0] == "set":
+                shared_dict[message[1]] = message[2]
+
+            if message[0] == "clear":
+                shared_dict.clear()
+
+            if message[0] == "get":
+                self.pipe[0].send(shared_dict.get(message[1]))
+
+            if message[0] == "ping":
+                self.pipe[0].send("pong")
+
+    def _stop(self):
+        """Stop the managing process."""
+        self.pipe[1].send(("stop",))
+
+    def _clear(self):
+        """Clears the memory."""
+        self.pipe[1].send(("clear",))
+
+    def get(self, key: str):
+        """Get a value from the dictionary.
+
+        If it doesn't exist, returns None.
+        """
+        return self[key]
+
+    def is_alive(self, timeout: Optional[int] = None):
+        """Check if the manager process is running."""
+        self.pipe[1].send(("ping",))
+        select.select([self.pipe[1]], [], [], timeout or self._timeout)
+        if self.pipe[1].poll():
+            return self.pipe[1].recv() == "pong"
+
+        return False
+
+    def __setitem__(self, key: str, value: Any):
+        self.pipe[1].send(("set", key, value))
+
+    def __getitem__(self, key: str):
+        self.pipe[1].send(("get", key))
+
+        select.select([self.pipe[1]], [], [], self._timeout)
+        if self.pipe[1].poll():
+            return self.pipe[1].recv()
+
+        logger.error("select.select timed out")
+        return None
+
+    def __del__(self):
+        self._stop()