fix(downloads): a suspended user's queued jobs wait, and a clip too big for the space left says so

A suspension now blocks the user's downloads as quota.resolve already advised: the worker leaves
their queued jobs unclaimed until it is lifted (the confirm says so). A cut clip larger than the
remaining storage is refused with its own message (not "storage is full"), and a clip's quota
refusal reads as a clip's in both languages. The cancel poll compares to JobStatus.RUNNING.

backend/tests/test_clip.py

@@ -696,9 +696,10 @@ def test_a_clip_larger_than_what_its_owner_has_left_is_refused_and_not_placed(
     job = _clip(as_user(make_user()), source=source, ref=ref).json()
     monkeypatch.setattr(quota, "remaining_bytes", lambda _db, _uid: 3)  # the cut is 4 bytes
     job, asset = worker["run"](job)
+    # Not "full": there is room left, just not this much.
     assert (job.status, job.error, asset.status, asset.rel_path) == (
         "error",
-        dlerrors.QUOTA_FULL_MESSAGE,
+        dlerrors.CLIP_TOO_BIG_MESSAGE,
         "pending",
         None,
     )

backend/tests/test_download_errors.py

@@ -63,6 +63,7 @@ def test_our_own_worker_refusals_classify_as_themselves():
     # fragment of the text. Pinning message and rule together is what stops an edit to the wording
     # from silently orphaning the category — the UI would then fall back to "Download failed".
     assert classify(dlerrors.QUOTA_FULL_MESSAGE) == "quota_exceeded"
+    assert classify(dlerrors.CLIP_TOO_BIG_MESSAGE) == "quota_exceeded"
 
 
 def test_the_redacted_network_text_classifies_back_to_network():

backend/tests/test_download_limits.py

@@ -155,6 +155,25 @@ def test_unlimited_user_is_never_excluded(db):
     assert _claim_job() == q.id
 
 
+def test_a_suspended_users_queued_jobs_wait(db):
+    # Suspending a user blocks their downloads (quota.resolve's advice): a job they queued before
+    # stays queued, unclaimed, and runs once the suspension is lifted.
+    s = User(email="suspended@example.com", is_suspended=True)
+    o = User(email="other@example.com")
+    db.add_all([s, o])
+    db.flush()
+    waits = _job(db, s.id, queue_pos=1)
+    served = _job(db, o.id, queue_pos=2)
+    db.commit()
+    assert _claim_job() == served.id
+    assert _claim_job() is None
+    db.expire_all()
+    assert db.get(DownloadJob, waits.id).status == "queued"
+    db.get(User, s.id).is_suspended = False
+    db.commit()
+    assert _claim_job() == waits.id
+
+
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