Installation error

Hello
Thanks for the effort with this snap. I could not test it yet since I get an installation error.

```
Run install hook of "dilyn-tubesync" snap if present |
error: cannot perform the following tasks:
- Run install hook of "dilyn-tubesync" snap if present (run hook "install":
-----
+ mkdir -p /var/snap/dilyn-tubesync/common/config/cache/pycache /var/snap/dilyn-tubesync/common/config/media /var/snap/dilyn-tubesync/common/config/tasks /var/snap/dilyn-tubesync/common/downloads/audio /var/snap/dilyn-tubesync/common/downloads/video
+ cp -rf /snap/dilyn-tubesync/12/fontawesome-free /snap/dilyn-tubesync/12/tubesync /var/snap/dilyn-tubesync/common
+ /var/snap/dilyn-tubesync/common/tubesync/manage.py migrate
Operations to perform:
Apply all migrations: admin, auth, common, contenttypes, sessions, sync
Running migrations:
Applying contenttypes.0001_initial... OK
Applying auth.0001_initial... OK
Applying admin.0001_initial... OK
Applying admin.0002_logentry_remove_auto_add... OK
Applying admin.0003_logentry_add_action_flag_choices... OK
Applying contenttypes.0002_remove_content_type_name... OK
Applying auth.0002_alter_permission_name_max_length... OK
Applying auth.0003_alter_user_email_max_length... OK
Applying auth.0004_alter_user_username_opts... OK
Applying auth.0005_alter_user_last_login_null... OK
Applying auth.0006_require_contenttypes_0002... OK
Applying auth.0007_alter_validators_add_error_messages... OK
Applying auth.0008_alter_user_username_max_length... OK
Applying auth.0009_alter_user_last_name_max_length... OK
Applying auth.0010_alter_group_name_max_length... OK
Applying auth.0011_update_proxy_permissions... OK
Applying auth.0012_alter_user_first_name_max_length... OK
Applying common.0001_initial... OK
Applying common.0002_taskhistory_elapsed_taskhistory_scheduled_at_and_more... OK
Applying common.0003_taskhistory_remove_duplicates... OK
Applying common.0004_alter_taskhistory_task_id...2026-07-08 09:28:21,737 [tubesync/INFO] TaskHistory rows: len(duplicates)=0
2026-07-08 09:28:21,737 [tubesync/INFO] TaskHistory rows: finished removing duplicates.
OK
Applying sessions.0001_initial... OK
Applying sync.0001_squashed_0030_alter_source_source_vcodec... OK
Applying sync.0031_squashed_metadata_metadataformat... OK
Applying sync.0032_metadata_transfer... OK
Applying sync.0033_alter_mediaserver_options_alter_source_source_acodec_and_more... OK
Applying sync.0034_source_target_schedule_and_more... OK
Applying sync.0035_alter_metadata_unique_together_metadata_source_and_more... OK
Applying sync.0036_alter_source_sponsorblock_categories... OK
+ /var/snap/dilyn-tubesync/common/tubesync/manage.py compilescss
Traceback (most recent call last):
File "/var/snap/dilyn-tubesync/common/tubesync/manage.py", line 18, in
main()
File "/var/snap/dilyn-tubesync/common/tubesync/manage.py", line 14, in main
execute_from_command_line(sys.argv)
File "/snap/dilyn-tubesync/12/lib/python3.10/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
utility.execute()
File "/snap/dilyn-tubesync/12/lib/python3.10/site-packages/django/core/management/__init__.py", line 436, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/snap/dilyn-tubesync/12/lib/python3.10/site-packages/django/core/management/__init__.py", line 275, in fetch_command
klass = load_command_class(app_name, subcommand)
File "/snap/dilyn-tubesync/12/lib/python3.10/site-packages/django/core/management/__init__.py", line 48, in load_command_class
module = import_module("%s.management.commands.%s" % (app_name, name))
File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1050, in _gcd_import
File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "/snap/dilyn-tubesync/12/lib/python3.10/site-packages/sass_processor/management/commands/compilescss.py", line 5, in
import sass
ModuleNotFoundError: No module named 'sass'

```

Start with the snap install hook and the manage.py compilescss entry point shown in the error. Reproduce the installation and inspect how the snap’s Python dependencies are provided; done means compilescss completes without ModuleNotFoundError for sass and the snap installation finishes.

Written by the indexing model from the issue text.