Fix all lint issues: Dockerfiles (DL3015/DL3013/DL4006) + Ruff (173→0 errors)

Dockerfile fixes:
- edu_master/phpsessid-bot: add --no-install-recommends, pin pip versions
- edu_master/webinar-checker: pin pip versions with --no-cache-dir
- userbot: add SHELL with pipefail for pipe operations

Ruff fixes (173 → 0):
- W293/W291/W292: whitespace clean via ruff format
- N806: camelCase → snake_case (anilist, safone, hearts, flux, etc.)
- ARG001/ARG002: prefix unused params with _
- SIM115: use context managers for file I/O
- SIM117: combine nested with statements
- S608: noqa on SQL f-strings (module name is validated)
- E402/N812/N817: import fixes
- B023: pass loop variable as argument
- I001: auto-sorted imports
- syntax: fixed = vs == in dtek_notif/main.py

edu_master/phpsessid-bot/bot.py

@@ -7,12 +7,10 @@ import redis
 import requests
 
 # Configure logging
-logging.basicConfig(
-    level=logging.INFO,
-    format='%(asctime)s - %(levelname)s - %(message)s'
-)
+logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
 logger = logging.getLogger(__name__)
 
+
 # Load configuration (adapted to .env keys)
 def _env(key, default=None):
     v = os.getenv(key, default)
@@ -20,40 +18,46 @@ def _env(key, default=None):
         return v[1:-1]
     return v
 
+
 LOGIN = _env('KEEPER_LOGIN')
 PASSWORD = _env('KEEPER_PASSWORD')
 
 EDU_BASE = _env('EDU_URL_BASE', 'https://edu.edu.vn.ua')
 EDU_LOGIN_PATH = _env('EDU_URL_LOGIN', '/user/login')
 EDU_COURSES_PATH = _env('EDU_URL_COURSES', '/course/userlist')
-URL_LOGIN = f"{EDU_BASE.rstrip('/')}/{EDU_LOGIN_PATH.lstrip('/')}"
-URL_VERIFY = f"{EDU_BASE.rstrip('/')}/{EDU_COURSES_PATH.lstrip('/')}"
+URL_LOGIN = f'{EDU_BASE.rstrip("/")}/{EDU_LOGIN_PATH.lstrip("/")}'
+URL_VERIFY = f'{EDU_BASE.rstrip("/")}/{EDU_COURSES_PATH.lstrip("/")}'
 
 INTERVAL = int(_env('KEEPER_INTERVAL', 10))
-USER_AGENT = _env('USER_AGENT', 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36')
+USER_AGENT = _env(
+    'USER_AGENT',
+    'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36',
+)
 REDIS_HOST = _env('REDIS_HOST', 'redis')
 REDIS_PORT = int(_env('REDIS_PORT', 6379))
 
 SUCCESS_FILE = '/tmp/last_success'  # noqa: S108
 
+
 def touch_success_file():
     """Updates the timestamp of the success file for healthchecks."""
     try:
         with open(SUCCESS_FILE, 'w') as f:
             f.write(str(datetime.now().timestamp()))
     except Exception as e:
-        logger.error(f"Failed to touch success file: {e}")
+        logger.error(f'Failed to touch success file: {e}')
+
 
 def main():
-    logger.info("Starting Session Keeper Bot")
+    logger.info('Starting Session Keeper Bot')
 
     # Connect to Redis
     try:
         redis_client = redis.Redis(host=REDIS_HOST, port=REDIS_PORT, decode_responses=True)
         redis_client.ping()
-        logger.info(f"Connected to Redis at {REDIS_HOST}:{REDIS_PORT}")
+        logger.info(f'Connected to Redis at {REDIS_HOST}:{REDIS_PORT}')
     except Exception as e:
-        logger.error(f"Failed to connect to Redis: {e}")
+        logger.error(f'Failed to connect to Redis: {e}')
         return
 
     session = requests.Session()
@@ -73,19 +77,16 @@ def main():
         'Sec-Ch-Ua-Mobile': '?0',
         'Sec-Ch-Ua-Platform': '"Linux"',
         'Accept-Encoding': 'gzip, deflate, br',
-        'Priority': 'u=0, i'
+        'Priority': 'u=0, i',
     }
     session.headers.update(headers)
 
     while True:
         try:
-            logger.info("Attempting login...")
+            logger.info('Attempting login...')
 
             # Login payload
-            payload = {
-                'login': LOGIN,
-                'password': PASSWORD
-            }
+            payload = {'login': LOGIN, 'password': PASSWORD}
 
             # Perform Login
             # Note: The user request shows a POST to /user/login with form data
@@ -94,17 +95,17 @@ def main():
 
             login_response = session.post(URL_LOGIN, data=payload, allow_redirects=True)
 
-            logger.info(f"Login Response Status: {login_response.status_code}")
-            logger.info(f"Cookies after login: {session.cookies.get_dict()}")
+            logger.info(f'Login Response Status: {login_response.status_code}')
+            logger.info(f'Cookies after login: {session.cookies.get_dict()}')
 
             # Verify Session
-            logger.info("Verifying session...")
+            logger.info('Verifying session...')
             verify_response = session.get(URL_VERIFY, allow_redirects=False)
 
-            logger.info(f"Verify Response Status: {verify_response.status_code}")
+            logger.info(f'Verify Response Status: {verify_response.status_code}')
 
             if verify_response.status_code == 200:
-                logger.info("Session verification SUCCESS (200 OK).")
+                logger.info('Session verification SUCCESS (200 OK).')
                 touch_success_file()
 
                 # Save PHPSESSID to Redis
@@ -112,19 +113,20 @@ def main():
                 if phpsessid:
                     try:
                         redis_client.set('EDU_PHPSESSID', phpsessid)
-                        logger.info(f"Saved PHPSESSID to Redis: {phpsessid}")
+                        logger.info(f'Saved PHPSESSID to Redis: {phpsessid}')
                     except Exception as e:
-                        logger.error(f"Failed to save PHPSESSID to Redis: {e}")
+                        logger.error(f'Failed to save PHPSESSID to Redis: {e}')
             elif verify_response.status_code == 302:
-                logger.warning("Session verification FAILED (302 Redirect). Session might be invalid.")
+                logger.warning('Session verification FAILED (302 Redirect). Session might be invalid.')
             else:
-                logger.warning(f"Session verification returned unexpected status: {verify_response.status_code}")
+                logger.warning(f'Session verification returned unexpected status: {verify_response.status_code}')
 
         except Exception as e:
-            logger.error(f"An error occurred: {e}")
+            logger.error(f'An error occurred: {e}')
 
-        logger.info(f"Sleeping for {INTERVAL} minutes...")
+        logger.info(f'Sleeping for {INTERVAL} minutes...')
         time.sleep(INTERVAL * 60)
 
-if __name__ == "__main__":
+
+if __name__ == '__main__':
     main()