v0.9.0

The daemon is unchanged from 0.8.0; all changes are in the GNOME Shell extension.

Changed

• App exclusion is enforced before a copy is sent to the daemon, instead of
  storing the item and deleting it afterward. Excluded content no longer
  reaches the database, and the focused app is checked at copy time.
• The D-Bus client follows the GJS guide: signals are handled through the proxy
  (connectSignal) and D-Bus errors are stripped of their GDBus.Error prefix
  before logging.
• shell-version declares GNOME Shell 50 only, the version the extension is
  tested on. Installs on older releases are no longer offered.
• The daemon-missing notification points to the project page for install
  instructions.

Fixed

• The initial history load retries on the next daemon connection if the first
  fetch fails, instead of leaving the panel empty until it is reopened.
• The D-Bus proxy callback is ignored when the extension was disabled (or
  re-enabled) while the proxy was still being created.
• disable() disconnects the panel indicator signal and drops pending idle
  callbacks, so nothing runs against a torn-down extension.

Internal

• Extension logging goes through one helper per file. Removed dead fields,
  stale comments, and leftover narration flagged by the EGO review guidelines
  and the shexli static analyzer.