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

modules/anime/anilist.py

@@ -43,22 +43,22 @@ async def anime_search(client: Client, message: Message):
 
         result = response.json()
 
-        averageScore = result['averageScore']
+        average_score = result['average_score']
         try:
-            coverImage_url = result['imageUrl']
-            coverImage = requests.get(url=coverImage_url, timeout=10).content
+            cover_image_url = result['imageUrl']
+            cover_image = requests.get(url=cover_image_url, timeout=10).content
             async with aiofiles.open('coverImage.jpg', mode='wb') as f:
-                await f.write(coverImage)
+                await f.write(cover_image)
 
         except Exception:
-            coverImage = None
+            cover_image = None
 
         title = result['title']['english']
         trailer = result['trailer']['id']
         description = result['description']
         episodes = result['episodes']
         genres = ', '.join(result['genres'])
-        isAdult = result['isAdult']
+        is_adult = result['is_adult']
         status = result['status']
         studios = ', '.join(result['studios'])
 
@@ -68,7 +68,7 @@ async def anime_search(client: Client, message: Message):
             [
                 InputMediaPhoto(
                     'coverImage.jpg',
-                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{averageScore}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Episodes:</b> <code>{episodes}</code>\n<b>Is Adult:</b> <code>{isAdult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
+                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{average_score}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Episodes:</b> <code>{episodes}</code>\n<b>Is Adult:</b> <code>{is_adult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
                 )
             ],
         )
@@ -81,7 +81,7 @@ async def anime_search(client: Client, message: Message):
             [
                 InputMediaPhoto(
                     'coverImage.jpg',
-                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{averageScore}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Episodes:</b> <code>{episodes}</code>\n<b>Is Adult:</b> <code>{isAdult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
+                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{average_score}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Episodes:</b> <code>{episodes}</code>\n<b>Is Adult:</b> <code>{is_adult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
                 )
             ],
         )
@@ -109,22 +109,22 @@ async def manga_search(client: Client, message: Message):
 
         result = response.json()
 
-        averageScore = result['averageScore']
+        average_score = result['average_score']
         try:
-            coverImage_url = result['imageUrl']
-            coverImage = requests.get(url=coverImage_url, timeout=10).content
+            cover_image_url = result['imageUrl']
+            cover_image = requests.get(url=cover_image_url, timeout=10).content
             async with aiofiles.open('coverImage.jpg', mode='wb') as f:
-                await f.write(coverImage)
+                await f.write(cover_image)
 
         except Exception:
-            coverImage = None
+            cover_image = None
 
         title = result['title']['english']
         trailer = result['trailer']['id']
         description = result['description']
         chapters = result['chapters']
         genres = ', '.join(result['genres'])
-        isAdult = result['isAdult']
+        is_adult = result['is_adult']
         status = result['status']
         studios = ', '.join(result['studios'])
 
@@ -134,7 +134,7 @@ async def manga_search(client: Client, message: Message):
             [
                 InputMediaPhoto(
                     'coverImage.jpg',
-                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{averageScore}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Chapters:</b> <code>{chapters}</code>\n<b>Is Adult:</b> <code>{isAdult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
+                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{average_score}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Chapters:</b> <code>{chapters}</code>\n<b>Is Adult:</b> <code>{is_adult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
                 )
             ],
         )
@@ -147,7 +147,7 @@ async def manga_search(client: Client, message: Message):
             [
                 InputMediaPhoto(
                     'coverImage.jpg',
-                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{averageScore}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Chapters:</b> <code>{chapters}</code>\n<b>Is Adult:</b> <code>{isAdult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
+                    caption=f"<b>Title:</b> <code>{title}</code>\n<b>Average Score:</b> <code>{average_score}</code>\n<b>Status:</b> <code>{status}</code>\n<b>Genres:</b> <code>{genres}</code>\n<b>Chapters:</b> <code>{chapters}</code>\n<b>Is Adult:</b> <code>{is_adult}</code>\n<b>Studios:</b> <code>{studios}</code>\n<b>Description:</b> <code>{description}</code>\n<b>Trailer:</b> <a href='https://youtu.be/{trailer}'>Click Here</a>",
                 )
             ],
         )
@@ -176,13 +176,13 @@ async def character(client: Client, message: Message):
         result = response.json()
 
         try:
-            coverImage_url = result['image']['large']
-            coverImage = requests.get(url=coverImage_url, timeout=10).content
+            cover_image_url = result['image']['large']
+            cover_image = requests.get(url=cover_image_url, timeout=10).content
             async with aiofiles.open('coverImage.jpg', mode='wb') as f:
-                await f.write(coverImage)
+                await f.write(cover_image)
 
         except Exception:
-            coverImage = None
+            cover_image = None
 
         age = result['age']
         description = result['description']