Port to Django 5.2 (#635)

* Port to Django 5.2

* Pin pluggy to 1.2.0

Any newer and the mystery importlib metadata error appears. Weird! >_>

* Update for premailer changed default

* Update view logic for is_ajax being changed to a template context processor

* Port a few more tests to pytest proper

Having two distinct test flavours is giving me a headache

* Version 1 dockerfile

Makes a VERY big image, I suspect we can optimise this a lot...

* Optimise dockerfile a little lot a bit

* fix(users): change logout link to POST request

* fix(tests): fix some syntax errors in test code

still got lots of failed tests :(

* fix: replace deprecated Django APIs

* ci: update Dockerfile

* ci: update Dockerfile

* fix(dependencies+tests): update EoL/vulnerable dependencies and improve test stability

* Upgrade Python from 3.10 to 3.12
* Update frontend dependencies, replace node-sass with sass

* chore(logging): ignore dangling obj reference warning from pypdf

* ci: update compose.yml for prod deployment

- Add Nginx as a reverse proxy
- Add cert-selfsign.sh for generating self-signed certificates
- Add certbot-issue.sh for Let's Encrypt certificate issuance and renewal
- Add cron-install.sh and cron-uninstall.sh for system cron management
- Add .env.example as an environment variable template

* style: reformat code

* ci: add more sleep trying to pass tests

* ci: ignore browser-based tests during ci testing

* fix: create home for the new user during Dockerfile building

* chore: remove heroku conf file

* fix: RIGS not franken anymore

* fix: restore is_ajax as a boolean and split out the context processor

* test: remove Selenium interaction tests and their CI workarounds

* fix: harden production settings (CSRF origins, env casts, ADMINS) and drop dead debug toolbar code

* deploy: serve static files from nginx, pin PGDATA, and make cert scripts loud on failure

* build: switch .dockerignore to an allowlist

* build: drop unused dependencies, soft-pin the rest and target Python 3.14

* build: move image to Python 3.14 / Node 24 and force DEBUG off

* ci: add dependabot config for uv, npm, docker and actions

* build: narrow Sass deprecation silencing to @import and require Node 24

* build: provide placeholder env for collectstatic now that DEBUG is off in the image

* deploy: add plain-HTTP nginx config for local development and use it in compose

* deploy: remove self-signed cert script

* build: make the image multi-arch with official node and python base images

* ci: lint and test on PRs, build the image on PRs and push it to GHCR on master

* docs: add local running and sample data instructions

* fix: report a form error instead of crashing when big power has no Power MIC

* fix: upgrade pypdf and urllib3 to patched releases

* fix: apply non-breaking npm audit fixes

* fix: strip whitespace in ALLOWED_HOSTS and drop misleading HSTS preload

* deploy: add a pyrigs healthcheck and make nginx wait for it

* build: pin the uv image version

* fix: correct the check-in person picker condition and use BeautifulSoup's string argument

* refactor: replace unique_together with UniqueConstraint

* build: replace pycodestyle with ruff and fix what it found

Removes unused imports and variables, and fixes a few real problems it
surfaced:
- EventCheckIn.active() referenced an undefined name and raised NameError;
  it now returns whether the check-in has no end time
- RIGS.admin defined EventChecklistAdmin twice; the second is now
  PowerTestRecordAdmin
- RIGS/tests/conftest.py used date/timedelta without importing them
- the signal-registering imports in apps.py are kept with noqa

pycodestyle config in setup.cfg is dropped.

* style: format the codebase with ruff

* style: normalise line endings, trailing whitespace and end-of-file newlines

* ci: run ruff and file hygiene through prek, and document it

---------

Co-authored-by: Hang <me@hangxu.me>
Co-authored-by: Joe Banks <joe@jb3.dev>

RIGS/management/commands/send_reminders.py

@@ -4,7 +4,7 @@ import datetime
 from django.template.loader import get_template
 from django.contrib.staticfiles import finders
 from django.conf import settings
-from django.core.management.base import BaseCommand, CommandError
+from django.core.management.base import BaseCommand
 from django.core.mail import EmailMultiAlternatives
 from django.utils import timezone
 from django.urls import reverse
@@ -13,17 +13,27 @@ from RIGS import models
 
 
 class Command(BaseCommand):
-    help = 'Sends email reminders as required. Triggered daily through heroku-scheduler in production.'
+    help = "Sends email reminders as required. Triggered daily through sys cron in production."
 
     def handle(self, *args, **options):
-        events = models.Event.objects.current_events().select_related('riskassessment')
+        events = models.Event.objects.current_events().select_related("riskassessment")
         for event in events:
-            earliest_time = event.earliest_time if isinstance(event.earliest_time, datetime.datetime) else timezone.make_aware(datetime.datetime.combine(event.earliest_time, datetime.time(00, 00)))
+            earliest_time = (
+                event.earliest_time
+                if isinstance(event.earliest_time, datetime.datetime)
+                else timezone.make_aware(datetime.datetime.combine(event.earliest_time, datetime.time(00, 00)))
+            )
             # 48 hours = 172800 seconds
-            if event.is_rig and not event.cancelled and not event.dry_hire and (earliest_time - timezone.now()).total_seconds() <= 172800 and not hasattr(event, 'riskassessment'):
+            if (
+                event.is_rig
+                and not event.cancelled
+                and not event.dry_hire
+                and (earliest_time - timezone.now()).total_seconds() <= 172800
+                and not hasattr(event, "riskassessment")
+            ):
                 context = {
                     "event": event,
-                    "url": "https://" + settings.DOMAIN + reverse('event_ra', kwargs={'pk': event.pk})
+                    "url": "https://" + settings.DOMAIN + reverse("event_ra", kwargs={"pk": event.pk}),
                 }
                 target = event.mic.email if event.mic else f"productions@{settings.DOMAIN}"
                 msg = EmailMultiAlternatives(
@@ -32,7 +42,11 @@ class Command(BaseCommand):
                     to=[target],
                     reply_to=[f"h.s.manager@{settings.DOMAIN}"],
                 )
-                css = finders.find('css/email.css')
-                html = premailer.Premailer(get_template("email/ra_reminder.html").render(context), external_styles=css).transform()
-                msg.attach_alternative(html, 'text/html')
+                css = finders.find("css/email.css")
+                html = premailer.Premailer(
+                    get_template("email/ra_reminder.html").render(context),
+                    external_styles=css,
+                    allow_loading_external_files=True,
+                ).transform()
+                msg.attach_alternative(html, "text/html")
                 msg.send()