style: formater le depot avec ruff format

QUA-002, premiere moitie. **Ce commit ne fait que reformater** : aucun
changement de comportement, aucune ligne de logique touchee. 72 fichiers,
4 restaient deja conformes. Il est isole exprès, pour que `git log -p` sur
les commits voisins reste lisible.

`quote-style = "preserve"` etait deja pose dans pyproject.toml, ce qui
evite le brassage guillemets simples / doubles : le diff porte sur les
retours a la ligne, l indentation des appels longs et les virgules
finales, pas sur le style de chaine.

Verification : 263 tests passent avant et apres, ruff check propre.

L activation en CI arrive dans le commit suivant, separement, pour que ce
diff-ci ne contienne rien d autre.

Co-Authored-By: Claude Opus 5 <[email protected]>

app/supporting_scripts/backup.py

@@ -53,6 +53,7 @@ class BackupError(Exception):
 # Connection handling
 # ---------------------------------------------------------------------------
 
+
 def parse_database_url(url):
     """Split a SQLAlchemy/PostgreSQL URL into pg_dump connection settings.
 
@@ -110,14 +111,19 @@ def build_dump_command(conn, output_path):
     """
     return [
         PG_DUMP,
-        '--host', conn['host'],
-        '--port', conn['port'],
-        '--username', conn['user'],
-        '--dbname', conn['dbname'],
+        '--host',
+        conn['host'],
+        '--port',
+        conn['port'],
+        '--username',
+        conn['user'],
+        '--dbname',
+        conn['dbname'],
         '--format=custom',
         '--no-owner',
         '--no-privileges',
-        '--file', output_path,
+        '--file',
+        output_path,
     ]
 
 
@@ -133,6 +139,7 @@ def dump_environment(conn):
 # Backup steps
 # ---------------------------------------------------------------------------
 
+
 def create_backup_dir():
     """Create the backup directory if it doesn't exist."""
     os.makedirs(BACKUP_DIR, exist_ok=True)
@@ -201,7 +208,9 @@ def verify_backup(backup_path):
     try:
         result = subprocess.run(
             [PG_RESTORE, '--list', backup_path],
-            capture_output=True, text=True, timeout=300,
+            capture_output=True,
+            text=True,
+            timeout=300,
         )
     except FileNotFoundError:
         print(f'[WARNING] {PG_RESTORE} not found: archive left unverified.')
@@ -214,8 +223,7 @@ def verify_backup(backup_path):
         print(f'[ERROR] Archive is not readable: {result.stderr.strip()}')
         return False
 
-    table_count = sum(1 for line in result.stdout.splitlines()
-                      if ' TABLE DATA ' in line)
+    table_count = sum(1 for line in result.stdout.splitlines() if ' TABLE DATA ' in line)
     if table_count == 0:
         print('[ERROR] Archive contains no table data.')
         return False
@@ -282,6 +290,7 @@ def cleanup_old_backups():
 # Entry point
 # ---------------------------------------------------------------------------
 
+
 def main(argv=None):
     """Run the full backup process.
 
@@ -290,8 +299,9 @@ def main(argv=None):
         previous version returned 0 even when it had backed up nothing.
     """
     parser = argparse.ArgumentParser(description='Team Tryouts backup')
-    parser.add_argument('--verify-only', metavar='ARCHIVE',
-                        help='Verify an existing archive and exit')
+    parser.add_argument(
+        '--verify-only', metavar='ARCHIVE', help='Verify an existing archive and exit'
+    )
     args = parser.parse_args(argv)
 
     if args.verify_only: