fix(plex): the rails' Restart comes from the one rollup; plain text decodes whole entity names only

Both Continue-watching rails built a show's card state inline; they now take it from rollup.show_state, so a show part watched with nothing to resume offers Play alone there too. A named reference counts only when its whole name is an HTML5 entity: html.unescape still decoded the legacy "&not" inside "&notice;". Tests cover the grid's in-progress-but-not-resumable case through its SQL and both rails.

backend/tests/test_plex_discover.py

@@ -165,6 +165,30 @@ def test_continue_watching_movies_and_shows(db, monkeypatch, override_dep):
     assert "m1" not in ids
 
 
+def test_a_continue_watching_show_says_whether_it_has_an_episode_to_resume(
+    db, monkeypatch, override_dep
+):
+    # Both in-progress rails (Discover's and Home's) take a show's card state from the one rollup:
+    # a show part watched with nothing to resume offers Play alone, not Continue + Restart.
+    from app.discover.queries import plex_in_progress
+
+    user = _seed(db)
+
+    def rails():
+        d = _get(db, user, monkeypatch, override_dep, "/api/plex/discover?scope=both").json()
+        home = {c["id"]: c for _, c in plex_in_progress(db, user.id, lang="en")}
+        return {c["id"]: c for c in d["continue_watching"]}["sh1"], home["sh1"]
+
+    assert [c["resumable"] for c in rails()] == [True, True]
+    ep1 = db.execute(select(PlexItem).where(PlexItem.rating_key == "sh1e1")).scalar_one()
+    st = db.execute(
+        select(PlexState).where(PlexState.user_id == user.id, PlexState.item_id == ep1.id)
+    ).scalar_one()
+    st.status, st.position_seconds = "watched", 0
+    db.commit()
+    assert [(c["status"], c["resumable"]) for c in rails()] == [("in_progress", False)] * 2
+
+
 def test_continue_watching_null_status_in_hidden_out(db, monkeypatch, override_dep):
     # A started movie whose PlexState.status is NULL is still "in progress": `NULL NOT IN (...)` is NULL
     # (not TRUE), so a bare notin_ would wrongly drop it — the or_(is_(None), notin_) branch keeps it.

backend/tests/test_plex_plaintext.py

@@ -33,6 +33,8 @@ HU_SUMMARY = "<p>A műsorban minden p&aacute;rosnak stoppal kell eljutnia.</p>"
         ("a < b and 1 <3 you", "a < b and 1 <3 you"),
         # Only a reference with its semicolon is one: an ampersand in prose stays as written.
         ("AT&notice, R&copy and H&M", "AT&notice, R&copy and H&M"),
+        # ...and only a whole entity name: a legacy one at its start ("&not", "&amp") is not.
+        ("AT&notice; and &ampx;", "AT&notice; and &ampx;"),
         ("&#233;t&#xE9; &copy;", "été ©"),
         ("Plain summary.", "Plain summary."),
         ("  padded  ", "padded"),

backend/tests/test_plex_query_conversion.py

@@ -220,15 +220,18 @@ class TestRollup:
             for i in _get(db, user, monkeypatch, override_dep, "/api/plex/library").json()["items"]
         }
         assert cards["s1"]["resumable"] is True
+        # e1 finished, e2 untouched: in progress, but nothing to resume
+        e1 = db.execute(select(PlexItem).where(PlexItem.rating_key == "e1")).scalar_one()
         db.execute(
-            delete(PlexState).where(PlexState.user_id == user.id, PlexState.position_seconds > 0)
+            delete(PlexState).where(PlexState.user_id == user.id, PlexState.item_id == e1.id)
         )
+        db.add(PlexState(user_id=user.id, item_id=e1.id, status="watched"))
         db.commit()
         cards = {
             i["id"]: i
             for i in _get(db, user, monkeypatch, override_dep, "/api/plex/library").json()["items"]
         }
-        assert cards["s1"]["resumable"] is False
+        assert (cards["s1"]["status"], cards["s1"]["resumable"]) == ("in_progress", False)
 
 
 def _fake_paginate(by_type):