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

userbot/modules/loader.py

@@ -85,8 +85,8 @@ async def loadmod(_, message: Message):
             module_name = url.lower()
             try:
                 f = requests.get(
-                    'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/full.txt'
-                , timeout=10).text
+                    'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/full.txt', timeout=10
+                ).text
             except Exception:
                 return await message.edit('Failed to fetch custom modules list')
             modules_dict = {line.split('/')[-1].split()[0]: line.strip() for line in f.splitlines()}
@@ -97,8 +97,9 @@ async def loadmod(_, message: Message):
                 return
         else:
             modules_hashes = requests.get(
-                'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/modules_hashes.txt'
-            , timeout=10).text
+                'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/modules_hashes.txt',
+                timeout=10,
+            ).text
             resp = requests.get(url, timeout=10)
 
             if not resp.ok:
@@ -136,8 +137,8 @@ async def loadmod(_, message: Message):
             content = f.read()
 
         modules_hashes = requests.get(
-            'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/modules_hashes.txt'
-        , timeout=10).text
+            'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/modules_hashes.txt', timeout=10
+        ).text
 
         if hashlib.sha256(content).hexdigest() not in modules_hashes:
             os.remove(file_name)
@@ -214,7 +215,9 @@ async def load_all_mods(_, message: Message):
         os.mkdir(f'{BASE_PATH}/modules/custom_modules')
 
     try:
-        f = requests.get('https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/full.txt', timeout=10).text
+        f = requests.get(
+            'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/full.txt', timeout=10
+        ).text
     except Exception:
         return await message.edit('Failed to fetch custom modules list')
     modules_list = f.splitlines()
@@ -281,14 +284,17 @@ async def updateallmods(_, message: Message):
         if not module_name.endswith('.py'):
             continue
         try:
-            f = requests.get('https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/full.txt', timeout=10).text
+            f = requests.get(
+                'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/full.txt', timeout=10
+            ).text
         except Exception:
             return await message.edit('Failed to fetch custom modules list')
         modules_dict = {line.split('/')[-1].split()[0]: line.strip() for line in f.splitlines()}
         if module_name in modules_dict:
             resp = requests.get(
-                f'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/{modules_dict[module_name]}.py'
-            , timeout=10)
+                f'https://raw.githubusercontent.com/The-MoonTg-project/custom_modules/main/{modules_dict[module_name]}.py',
+                timeout=10,
+            )
             if not resp.ok:
                 modules_installed.remove(module_name)
                 continue