No way to filter the application list by status or company

The entire point of tracking applications through applied -> interview -> offer/rejected is to be able to answer "what do I need to follow up on right now?" -- which for anyone with more than a handful of applications means filtering to just the ones at a given stage, or just the ones at a specific company. Today there is no way to do that: GET /api/applications/ always returns everything, paginated 20 at a time, and a user with 60 applications has to page through all of them to find the three currently at interview. This directly limits how useful the product is to its heaviest users -- the ones actively job-searching across many companies at once, which is exactly the audience this tool is for.

ApplicationViewSet.get_queryset() filters only by the requesting user; it never reads self.request.query_params. A request like GET /api/applications/?status=interview is accepted (DRF doesn't reject unknown query params) but silently has no effect -- every application the user owns comes back regardless of status.

No dedicated shell repro in the ticket doc -- the effect is that a status/company

filter is silently ignored:

curl -s "http://127.0.0.1:8000/api/applications/?status=interview"
-H "Authorization: Token $TOKEN"

-> returns every application the user owns, not just the ones at "interview"

This has to live in get_queryset(), not in the serializer, because it's a "which rows do I return" concern applied before pagination, not a per-object shape concern -- pagination (PAGE_SIZE = 20) has to operate on the already-filtered set, or a user filtering to "interview" would still see unrelated applications mixed into the first page.

self.request.query_params is where DRF exposes the query string on a ViewSet. You'll conditionally chain additional .filter(...) calls onto the existing owner-scoped queryset based on which of status/company are actually present -- look at how Django's ORM expresses a case-insensitive "contains" lookup for a CharField.