Both model-download call sites built the User-Agent string separately:
recognition_manager used a hardcoded literal while settings_dialog
interpolated APP_ID. Add app_identity.user_agent() and use it in both,
with a test pinning the shared definition.
Fixes#17
The fork takes its own name everywhere a user can see it: binaries
(voculinux, voculinux-gui), desktop entry, autostart, tray, D-Bus
namespace (com.voculinux.Voculinux, no alias for the old name),
config/data/cache dirs, single-instance lock, IBus engine identity,
tray icons, resource prefixes, VOCULINUX_* environment names, and the
update-checker user agent. The internal Python module stays vocalinux
and the distribution metadata keeps the upstream URLs as provenance.
On first run a previous Vocalinux install's config.json, custom
dictionary, and portal restore token are copied once into the new
locations (new config always wins, no merge, no write-back); models
re-resolve through the pinned-checksum download path. An offline
naming-sweep test proves no old-name strings remain on user-visible
surfaces outside the allowlist.
Refs #18
Single app_identity module owns APP_NAME/APP_ID, D-Bus names,
desktop/icon/IBus names and related surfaces; 16 consumers import
from it with zero value changes. Deliberately excludes
settings_about and dictation_pad literals pinned by existing tests.
Refs #17
soubarnak