feat(abs): add snapcraft dbus reference call.

apparmor.d/abstractions/bus/session/io.snapcraft.Launcher

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+# apparmor.d - Full set of apparmor profiles
+# Copyright (C) 2025 Alexandre Pujol <alexandre@pujol.io>
+# SPDX-License-Identifier: GPL-2.0-only
+
+# Allow use of snapd's internal xdg-open
+
+  abi <abi/4.0>,
+
+  dbus send bus=session path=/
+      interface=com.canonical.SafeLauncher
+      member=OpenURL
+      peer=(name=@{busname}, label=snap),
+
+  dbus send bus=session path=/io/snapcraft/Launcher
+       interface=io.snapcraft.Launcher
+       member={OpenURL,OpenFile}
+       peer=(name=@{busname}, label=snap),
+
+  include if exists <abstractions/bus/session/io.snapcraft.Launcher.d>
+
+# vim:syntax=apparmor

apparmor.d/abstractions/bus/session/io.snapcraft.PrivilegedDesktopLauncher

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+# apparmor.d - Full set of apparmor profiles
+# Copyright (C) 2023-2024 Alexandre Pujol <alexandre@pujol.io>
+# SPDX-License-Identifier: GPL-2.0-only
+
+# Can identify and launch other snaps.
+
+  abi <abi/4.0>,
+
+  dbus send bus=session path=/io/snapcraft/PrivilegedDesktopLauncher
+       interface=io.snapcraft.PrivilegedDesktopLauncher
+       member=OpenDesktopEntry
+       peer=(name=io.snapcraft.Launcher, label=snap),
+
+  include if exists <abstractions/bus/session/io.snapcraft.PrivilegedDesktopLauncher.d>
+
+# vim:syntax=apparmor

apparmor.d/abstractions/bus/session/io.snapcraft.Settings

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+# apparmor.d - Full set of apparmor profiles
+# Copyright (C) 2025 Alexandre Pujol <alexandre@pujol.io>
+# SPDX-License-Identifier: GPL-2.0-only
+
+# Allow use of snapd's internal 'xdg-settings'
+
+  abi <abi/4.0>,
+
+  dbus send bus=session path=/io/snapcraft/Settings
+       interface=io.snapcraft.Settings
+       member={Check,CheckSub,Get,GetSub,Set,SetSub}
+       peer=(name=io.snapcraft.Settings, label=snap),
+
+  include if exists <abstractions/bus/session/io.snapcraft.Settings.d>
+
+# vim:syntax=apparmor