fix: BUG-025/026/027/028/029 implementations and ruff/mypy refinements

BUG-025: send_channel_message retry logic on no_event_received
BUG-026: split_text_into_chunks and chunked dispatch in message_handler
BUG-027: test_weekly_on_wrong_day_does_not_run patch uses fake_now
BUG-028: byte_data = b"" initialised before try in decode_meshcore_packet
BUG-029: app.py db_path via self._config_base; realtime.html socket race
  fixed; base.html forceNew removed; ping_timeout 5 to 20s

Additional: ruff and mypy refinements across all modules; discord bridge,
telegram bridge, rate limiter, and service plugin updates

modules/commands/cmd_command.py

@@ -33,7 +33,7 @@ class CmdCommand(BaseCommand):
         super().__init__(bot)
         self.cmd_enabled = self.get_config_value('Cmd_Command', 'enabled', fallback=True, value_type='bool')
 
-    def can_execute(self, message: MeshMessage) -> bool:
+    def can_execute(self, message: MeshMessage, skip_channel_check: bool = False) -> bool:
         """Check if this command can be executed with the given message.
 
         Args:
@@ -135,7 +135,7 @@ class CmdCommand(BaseCommand):
             return ', '.join(command_names)
 
         # Build list within length limit
-        result = []
+        result: list[str] = []
         prefix = "Available commands: "
         current_length = len(prefix)