feat(plex): S5b persist rich detail + serve item/show detail from DB

Persist the info-page rich fields that were previously read LIVE from plex.metadata() on every view —
imdb_rating (IMDb-specific, vs `rating`=audienceRating), imdb_id, tagline, and full_cast
([{name,role,thumb}]) — onto plex_items/plex_shows, and serve the detail endpoints from the row.

- migration 0065: ADD imdb_rating/imdb_id/tagline/full_cast (nullable → no rewrite/lock, unlike 0064);
  NULL people_enriched_at on movie/show rows so the existing cast backfill re-fetches each once and
  fills the new columns.
- new app/plex/detail.py: rich_detail(meta) (moved out of browse._rich_meta so sync + serve share one
  parser) + apply_rich_detail(row, meta); wired into _enrich_people_batch and the info-page lazy fill.
- item_detail: movies serve cast/IMDb/tagline/genres from the row and keep plex.metadata(markers=True)
  ONLY for markers + audio/subtitle streams (so detail survives a live-Plex outage); episodes (never
  enriched) still parse detail from that live meta.
- show_detail: serves cast/IMDb from the row; `related` stays live best-effort and also lazily fills a
  not-yet-enriched show.
- tests: rich_detail/apply_rich_detail parsing + persistence, backfill stamping, item_detail
  outage-resilience + lazy fill + episode-live, show_detail row serving. Full suite 285 pass / 2 skip;
  migration verified reversible (up→down→up).

Precondition for S6's pure-DB language-aware serving.

backend/alembic/versions/0065_plex_detail_fields.py

@@ -0,0 +1,45 @@
+"""plex rich-detail item/show columns (E5 S5b)
+
+On plex_items and plex_shows: the fields that were previously read LIVE from plex.metadata() on every
+info-page view — `imdb_rating` (the IMDb-specific score, distinct from `rating` = audienceRating),
+`imdb_id` (tt…), `tagline`, and `full_cast` (ordered [{name, role, thumb}]). Persisting them lets the
+detail endpoints serve from the DB row instead of a live Plex call (outage-resilient, and the
+precondition for S6's pure-DB language-aware serving).
+
+These are filled by the same rich backfill that already fills the full cast (`_enrich_people_batch`),
+so the data step below resets `people_enriched_at` to NULL on movie/show rows: the backfill re-fetches
+each once (60/run, self-throttled) and stamps the new columns. ADD-only, all nullable → no table
+rewrite, no generated column, no ACCESS EXCLUSIVE lock (unlike 0064).
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+revision: str = "0065_plex_detail_fields"
+down_revision: Union[str, None] = "0064_plex_hu_overlay_cols"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+_TABLES = ("plex_items", "plex_shows")
+
+
+def upgrade() -> None:
+    for t in _TABLES:
+        op.add_column(t, sa.Column("imdb_rating", sa.Float(), nullable=True))
+        op.add_column(t, sa.Column("imdb_id", sa.String(16), nullable=True))
+        op.add_column(t, sa.Column("tagline", sa.Text(), nullable=True))
+        op.add_column(t, sa.Column("full_cast", postgresql.JSONB(), nullable=True))
+    # Force a one-time re-enrich so already-enriched rows gain the new columns (episodes are never
+    # enriched, so their NULL people_enriched_at is unaffected; they keep serving detail live).
+    op.execute("UPDATE plex_items SET people_enriched_at = NULL WHERE kind = 'movie'")
+    op.execute("UPDATE plex_shows SET people_enriched_at = NULL")
+
+
+def downgrade() -> None:
+    for t in _TABLES:
+        op.drop_column(t, "full_cast")
+        op.drop_column(t, "tagline")
+        op.drop_column(t, "imdb_id")
+        op.drop_column(t, "imdb_rating")

backend/app/models.py

@@ -1048,6 +1048,12 @@ class PlexShow(Base, TimestampMixin, UpdatedAtMixin):
     people_text: Mapped[str | None] = mapped_column(Text)  # cast+directors, folded into search_vector
     # Set once the show's FULL cast has been rich-fetched by the backfill; NULL = still the listing top-3.
     people_enriched_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    # Rich-fetch-only detail fields, persisted by the same backfill that fills the full cast (E5 S5b) so
+    # the info page serves from this row instead of a live plex.metadata() call. NULL until enriched.
+    imdb_rating: Mapped[float | None] = mapped_column(Float)  # IMDb-specific score (vs `rating` = audienceRating)
+    imdb_id: Mapped[str | None] = mapped_column(String(16))  # tt… → the clickable IMDb link
+    tagline: Mapped[str | None] = mapped_column(Text)
+    full_cast: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))  # ordered [{name, role, thumb}]
     # Hungarian-metadata twin fields, written by the overlay sync (E5 S5). NULL = no HU twin matched,
     # so serving falls back to the EN columns. `people_text` is language-neutral, reused for both vectors.
     title_hu: Mapped[str | None] = mapped_column(String(512))
@@ -1159,6 +1165,12 @@ class PlexItem(Base, TimestampMixin, UpdatedAtMixin):
     people_text: Mapped[str | None] = mapped_column(Text)
     # Set once the movie's FULL cast has been rich-fetched by the backfill; NULL = still the listing top-3.
     people_enriched_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    # Rich-fetch-only detail fields, persisted by the same backfill that fills the full cast (E5 S5b) so
+    # the info page serves from this row instead of a live plex.metadata() call. NULL until enriched.
+    imdb_rating: Mapped[float | None] = mapped_column(Float)  # IMDb-specific score (vs `rating` = audienceRating)
+    imdb_id: Mapped[str | None] = mapped_column(String(16))  # tt… → the clickable IMDb link
+    tagline: Mapped[str | None] = mapped_column(Text)
+    full_cast: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))  # ordered [{name, role, thumb}]
     # Hungarian-metadata twin fields, written by the overlay sync (E5 S5). NULL = no HU twin matched
     # (serving falls back to the EN columns). `people_text` is language-neutral, reused for both vectors.
     title_hu: Mapped[str | None] = mapped_column(String(512))

backend/app/plex/detail.py

@@ -0,0 +1,61 @@
+"""Parse the "info page" rich metadata out of a full Plex metadata dict, and persist the subset that
+the detail endpoints serve from the DB row (E5 S5b).
+
+Shared by the live info-page path (routes.plex.browse) and the background rich re-sync (plex.sync) so
+the two never diverge — the same one-parser rule that keeps `people.py`'s cast handling consistent.
+`rich_detail` is the pure parser; `apply_rich_detail` writes the rich-ONLY fields onto a movie/show row
+(genres/directors/studio/content_rating already land from the cheap listing at `_apply_facet_fields`)."""
+
+from app.plex import people
+
+
+def rich_detail(meta: dict) -> dict:
+    """Pull the info-page extras out of a full Plex metadata dict: an IMDb score + link, content
+    rating, genres, director(s), studio, tagline, and cast (name/role/photo). Best-effort — any
+    missing field is just omitted."""
+    # Rating: prefer the explicit IMDb entry in the Rating array, else the generic audienceRating.
+    imdb_rating = None
+    for r in meta.get("Rating") or []:
+        if str(r.get("image") or "").startswith("imdb://"):
+            try:
+                imdb_rating = round(float(r.get("value")), 1)
+            except (TypeError, ValueError):
+                pass
+            break
+    if imdb_rating is None:
+        try:
+            imdb_rating = round(float(meta.get("audienceRating") or meta.get("rating")), 1)
+        except (TypeError, ValueError):
+            imdb_rating = None
+    # IMDb id (tt…) from the Guid list → a clickable link.
+    imdb_id = None
+    for g in meta.get("Guid") or []:
+        gid = str(g.get("id") or "")
+        if gid.startswith("imdb://"):
+            imdb_id = gid.split("imdb://", 1)[1]
+            break
+    return {
+        "imdb_rating": imdb_rating,
+        "imdb_id": imdb_id,
+        "imdb_url": f"https://www.imdb.com/title/{imdb_id}/" if imdb_id else None,
+        "content_rating": meta.get("contentRating"),
+        "genres": [g.get("tag") for g in (meta.get("Genre") or []) if g.get("tag")][:8],
+        "directors": [
+            d.get("tag") for d in (meta.get("Director") or []) if d.get("tag")
+        ][:4],
+        "studio": meta.get("studio"),
+        "tagline": meta.get("tagline"),
+        "cast": people.cast_from_meta(meta),
+    }
+
+
+def apply_rich_detail(row, meta: dict) -> None:
+    """Persist the rich-ONLY detail fields onto a movie/show row so the info page serves them from the
+    DB instead of a live Plex call. Call wherever a rich metadata dict is fetched (the cast backfill +
+    the info-page lazy enrich). Empty cast persists as SQL NULL (none_as_null), so an EN fallback and
+    the `full_cast IS NULL` "not yet enriched" signal stay meaningful."""
+    d = rich_detail(meta)
+    row.imdb_rating = d["imdb_rating"]
+    row.imdb_id = d["imdb_id"]
+    row.tagline = d["tagline"]
+    row.full_cast = d["cast"] or None

backend/app/plex/sync.py

@@ -17,7 +17,7 @@ from sqlalchemy.orm import Session
 
 from app import sysconfig
 from app.models import PlexCollection, PlexItem, PlexLibrary, PlexSeason, PlexShow
-from app.plex import people
+from app.plex import detail, people
 from app.plex.client import PlexClient, PlexError, PlexNotConfigured
 from app.plex.lookups import by_rating_key
 
@@ -258,6 +258,7 @@ def _enrich_people_batch(db: Session, plex: PlexClient, limit: int = _ENRICH_BAT
             log.debug("Plex people enrich fetch failed for %s: %s", row.rating_key, e)
             continue  # leave people_enriched_at NULL so it's retried on a later run
         people.enrich_row_people(db, row, people.cast_from_meta(meta))
+        detail.apply_rich_detail(row, meta)  # imdb/tagline/full_cast → served from the row, not live
         row.people_enriched_at = now
         n += 1
     db.commit()

backend/app/routes/plex/browse.py

@@ -39,6 +39,7 @@ from app.models import (
     PlexState,
     User,
 )
+from app.plex import detail as plex_detail
 from app.plex import people as plex_people
 from app.plex import rollup, subtitles
 from app.plex import sync as plex_sync
@@ -1392,31 +1393,28 @@ def show_detail(
         all_cards.append(card)
     show_roll = rollup.rollup(all_cards)
 
-    # Cast + IMDb (best-effort live metadata; same shape as the movie/episode info page). The two live
-    # Plex calls are cached per-show + fetched in parallel by _show_enrichment; the per-user shaping
-    # (_related_show_cards adds this user's watch-state) stays out of the shared cache.
-    rich: dict = {}
+    # Cast + IMDb + tagline are served from the DB row (persisted by the cast backfill, E5 S5b). The one
+    # remaining live call is `related` — a Plex recommendation hub we don't mirror — which also carries
+    # the metadata used to lazily fill a not-yet-enriched show. Any live failure just drops `related` and
+    # the lazy fill; the row-served detail below still renders (outage-resilient).
     related: list[dict] = []
     try:
         meta, related_raw = _show_enrichment(db, sh.rating_key)
-        rich = _rich_meta(meta)
         related = _related_show_cards(db, user.id, related_raw, exclude=sh.id)
+        if sh.people_enriched_at is None and meta:
+            plex_people.enrich_row_people(db, sh, plex_people.cast_from_meta(meta))
+            plex_detail.apply_rich_detail(sh, meta)  # imdb/tagline/full_cast for future views
+            sh.people_enriched_at = datetime.now(timezone.utc)
+            try:
+                db.commit()
+            except Exception:
+                db.rollback()
     except Exception:
-        # Best-effort enrichment only — the local episode list is already assembled, so any live-Plex
-        # failure (not configured, HTTP/JSON shape, _rich_meta parse error) must degrade, not 500.
+        # Best-effort only — the local episode list is already assembled, so any live-Plex failure
+        # (not configured, HTTP/JSON shape) must degrade, not 500.
         pass
 
-    # Lazy enrichment: persist the show's full cast so its cast members become filterable (same as the
-    # movie info page — the sync only stored the listing's top ~3), and stamp people_enriched_at so the
-    # backfill skips it. Best-effort.
-    if rich.get("cast"):
-        plex_people.enrich_row_people(db, sh, rich["cast"])
-        sh.people_enriched_at = datetime.now(timezone.utc)
-        try:
-            db.commit()
-        except Exception:
-            db.rollback()
-
+    imdb_id = sh.imdb_id
     return {
         "show": {
             "id": sh.rating_key,
@@ -1431,10 +1429,10 @@ def show_detail(
             "genres": sh.genres or [],
             "studio": sh.studio,
             "season_count": sh.child_count,
-            "imdb_rating": rich.get("imdb_rating"),
-            "imdb_id": rich.get("imdb_id"),
-            "imdb_url": rich.get("imdb_url"),
-            "cast": rich.get("cast", []),
+            "imdb_rating": sh.imdb_rating,
+            "imdb_id": imdb_id,
+            "imdb_url": f"https://www.imdb.com/title/{imdb_id}/" if imdb_id else None,
+            "cast": sh.full_cast or [],
             # Show-level rollup for the hero action buttons.
             "status": show_roll["status"],
             "resume": show_roll["resume"],
@@ -1495,48 +1493,6 @@ def _related_show_cards(
     return out
 
 
-def _rich_meta(meta: dict) -> dict:
-    """Pull the "info page" extras out of a full Plex metadata dict: an IMDb score + link, content
-    rating, genres, director(s), studio, tagline, and cast (name/role/photo). Best-effort — any
-    missing field is just omitted."""
-    # Rating: prefer the explicit IMDb entry in the Rating array, else the generic audienceRating.
-    imdb_rating = None
-    for r in meta.get("Rating") or []:
-        if str(r.get("image") or "").startswith("imdb://"):
-            try:
-                imdb_rating = round(float(r.get("value")), 1)
-            except (TypeError, ValueError):
-                pass
-            break
-    if imdb_rating is None:
-        try:
-            imdb_rating = round(
-                float(meta.get("audienceRating") or meta.get("rating")), 1
-            )
-        except (TypeError, ValueError):
-            imdb_rating = None
-    # IMDb id (tt…) from the Guid list → a clickable link.
-    imdb_id = None
-    for g in meta.get("Guid") or []:
-        gid = str(g.get("id") or "")
-        if gid.startswith("imdb://"):
-            imdb_id = gid.split("imdb://", 1)[1]
-            break
-    return {
-        "imdb_rating": imdb_rating,
-        "imdb_id": imdb_id,
-        "imdb_url": f"https://www.imdb.com/title/{imdb_id}/" if imdb_id else None,
-        "content_rating": meta.get("contentRating"),
-        "genres": [g.get("tag") for g in (meta.get("Genre") or []) if g.get("tag")][:8],
-        "directors": [
-            d.get("tag") for d in (meta.get("Director") or []) if d.get("tag")
-        ][:4],
-        "studio": meta.get("studio"),
-        "tagline": meta.get("tagline"),
-        "cast": plex_people.cast_from_meta(meta),
-    }
-
-
 def _content_libs(db: Session) -> tuple[list[int], list[int]]:
     """The BROWSABLE content libraries, partitioned into (movie_lib_ids, show_lib_ids) — the single
     source of the browse scope. Excludes HU overlay libraries (`overlay_of` set): those are never
@@ -1767,14 +1723,16 @@ def item_detail(
         )
     ).scalars().first()
 
-    rich: dict = {}
+    # Markers + audio/subtitle streams are file-specific, so they stay LIVE; the rich detail (cast/IMDb/
+    # tagline/genres) is served from the DB row for movies (persisted below / by the backfill) and only
+    # parsed from this live meta for episodes (never enriched — not in the grid, no HU overlay).
+    meta: dict = {}
     markers: list[dict] = []
     audio_streams: list[dict] = []
     subtitle_streams: list[dict] = []
     try:
         with PlexClient(db) as plex:
             meta = plex.metadata(it.rating_key, markers=True) or {}
-        rich = _rich_meta(meta)
         for m in meta.get("Marker") or []:
             if m.get("type") in ("intro", "credits"):
                 markers.append(
@@ -1814,20 +1772,39 @@ def item_detail(
                     }
                 )
     except Exception:
-        pass  # metadata extras are best-effort; any live-Plex failure must degrade, not 500 — playback works without them
+        pass  # live extras (markers/streams) are best-effort; any live-Plex failure must degrade, not 500 — playback works without them
 
-    # Lazy enrichment: the rich fetch above carries the FULL cast (the sync only stored the listing's
-    # top ~3), so persist it onto this movie so every cast member shown here becomes filterable, and
-    # stamp people_enriched_at so the backfill skips it. Movie only — episodes aren't in the grid; a
-    # show's cast is enriched from /show. Best-effort.
-    if it.kind == "movie" and rich.get("cast"):
-        plex_people.enrich_row_people(db, it, rich["cast"])
+    # Lazy enrichment (movies only): the live fetch above carries the FULL cast + rich detail (the sync
+    # only stored the listing's top ~3), so fill a not-yet-enriched movie — its cast becomes filterable
+    # and future views serve from the row. Episodes aren't enriched; a show's cast is filled from /show.
+    if it.kind == "movie" and it.people_enriched_at is None and meta:
+        cast = plex_people.cast_from_meta(meta)
+        if cast:
+            plex_people.enrich_row_people(db, it, cast)
+        plex_detail.apply_rich_detail(it, meta)
         it.people_enriched_at = datetime.now(timezone.utc)
         try:
             db.commit()
         except Exception:
             db.rollback()
 
+    # Movies serve rich detail from the DB row; episodes from the live meta just fetched.
+    if it.kind == "movie":
+        _imdb_id = it.imdb_id
+        rich = {
+            "cast": it.full_cast or [],
+            "imdb_rating": it.imdb_rating,
+            "imdb_id": _imdb_id,
+            "imdb_url": f"https://www.imdb.com/title/{_imdb_id}/" if _imdb_id else None,
+            "content_rating": it.content_rating,
+            "genres": it.genres or [],
+            "directors": it.directors or [],
+            "studio": it.studio,
+            "tagline": it.tagline,
+        }
+    else:
+        rich = plex_detail.rich_detail(meta)
+
     prev_id, next_id = _episode_nav(db, it)
     show = db.get(PlexShow, it.show_id) if it.kind == "episode" and it.show_id else None
     return {

backend/tests/test_plex_detail.py

@@ -0,0 +1,253 @@
+"""Regression (E5 S5b): the info-page rich detail (IMDb score/id, tagline, full cast) is persisted at
+rich-fetch time and served from the DB row instead of a live plex.metadata() call.
+
+- `rich_detail`/`apply_rich_detail` are pure — parse + persist the rich-only fields.
+- `_enrich_people_batch` (the cast backfill) now also stamps those fields.
+- `item_detail` serves a MOVIE's detail from the row (survives a live-Plex outage) while keeping
+  markers/streams live; an EPISODE (never enriched) still parses detail from the live meta.
+- `show_detail` serves from the row; `related` stays live best-effort.
+
+The endpoint tests use the DB lane (`db` fixture) — skipped when no Postgres is reachable.
+"""
+from types import SimpleNamespace
+
+from fastapi.testclient import TestClient
+
+import app.routes.plex.browse as browse
+import app.state as state
+from app.auth import current_user
+from app.db import get_db
+from app.main import app
+from app.models import PlexItem, PlexLibrary, PlexShow, User
+from app.plex import detail
+from app.plex.sync import _enrich_people_batch
+
+# A full Plex metadata dict: an explicit IMDb Rating entry (must win over audienceRating), an IMDb Guid,
+# a tagline, and a two-person cast (one with a CDN headshot → proxied, one without → thumb None).
+RICH_META = {
+    "Rating": [
+        {"image": "imdb://image.rating.imdb", "value": 8.7},
+        {"image": "themoviedb://image.rating", "value": 7.0},
+    ],
+    "audienceRating": 9.9,  # ignored: the imdb Rating entry is preferred
+    "Guid": [{"id": "tmdb://238"}, {"id": "imdb://tt0068646"}],
+    "contentRating": "R",
+    "Genre": [{"tag": "Crime"}, {"tag": "Drama"}],
+    "Director": [{"tag": "Francis Ford Coppola"}],
+    "studio": "Paramount",
+    "tagline": "An offer you can't refuse.",
+    "Role": [
+        {"tag": "Marlon Brando", "role": "Vito Corleone", "thumb": "https://metadata-static.plex.tv/b.jpg"},
+        {"tag": "Al Pacino", "role": "Michael"},
+    ],
+}
+
+
+# ---- pure parse/persist --------------------------------------------------------------------------
+
+def test_rich_detail_prefers_imdb_entry_and_builds_link():
+    d = detail.rich_detail(RICH_META)
+    assert d["imdb_rating"] == 8.7  # the imdb Rating entry, not audienceRating (9.9)
+    assert d["imdb_id"] == "tt0068646"
+    assert d["imdb_url"] == "https://www.imdb.com/title/tt0068646/"
+    assert d["tagline"] == "An offer you can't refuse."
+    assert [c["name"] for c in d["cast"]] == ["Marlon Brando", "Al Pacino"]
+    assert d["cast"][0]["role"] == "Vito Corleone"
+    assert d["cast"][0]["thumb"] and d["cast"][0]["thumb"].startswith("/api/plex/person-image")
+    assert d["cast"][1]["thumb"] is None  # no CDN headshot → not proxied
+
+
+def test_rich_detail_falls_back_to_audience_rating():
+    d = detail.rich_detail({"audienceRating": 7.25})
+    assert d["imdb_rating"] == 7.2  # rounded to 1dp
+    assert d["imdb_id"] is None and d["imdb_url"] is None
+
+
+def test_apply_rich_detail_writes_only_rich_fields():
+    row = SimpleNamespace(imdb_rating=None, imdb_id=None, tagline=None, full_cast=None)
+    detail.apply_rich_detail(row, RICH_META)
+    assert row.imdb_rating == 8.7
+    assert row.imdb_id == "tt0068646"
+    assert row.tagline == "An offer you can't refuse."
+    assert [c["name"] for c in row.full_cast] == ["Marlon Brando", "Al Pacino"]
+
+
+def test_apply_rich_detail_empty_cast_persists_null():
+    row = SimpleNamespace(imdb_rating=1.0, imdb_id="x", tagline="t", full_cast=[{"name": "stale"}])
+    detail.apply_rich_detail(row, {})  # a poor/empty meta must clear to NULL, not keep stale data
+    assert row.full_cast is None
+    assert row.imdb_rating is None and row.imdb_id is None and row.tagline is None
+
+
+# ---- backfill persistence (DB lane) --------------------------------------------------------------
+
+class _StubClient:
+    """Stand-in for PlexClient: `_enrich_people_batch` calls plex.metadata(rating_key); item_detail
+    uses it as a context manager and passes markers=True. `raise_` simulates a Plex outage."""
+
+    def __init__(self, meta: dict | None = None, raise_: bool = False):
+        self._meta = meta or {}
+        self._raise = raise_
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *a):
+        return False
+
+    def metadata(self, rating_key, markers=False):
+        if self._raise:
+            raise RuntimeError("plex unavailable")
+        return self._meta
+
+
+def test_enrich_people_batch_persists_detail(db):
+    lib = PlexLibrary(plex_key="1", title="Movies", kind="movie", enabled=True)
+    db.add(lib)
+    db.flush()
+    mv = PlexItem(rating_key="m1", library_id=lib.id, kind="movie", title="The Godfather")
+    db.add(mv)
+    db.commit()
+    assert mv.people_enriched_at is None and mv.full_cast is None
+
+    n = _enrich_people_batch(db, _StubClient(RICH_META))
+    assert n == 1
+    db.refresh(mv)
+    assert mv.imdb_rating == 8.7
+    assert mv.imdb_id == "tt0068646"
+    assert mv.tagline == "An offer you can't refuse."
+    assert [c["name"] for c in mv.full_cast] == ["Marlon Brando", "Al Pacino"]
+    assert mv.cast_names == ["Marlon Brando", "Al Pacino"]  # people enrich still runs alongside
+    assert mv.people_enriched_at is not None  # stamped so the backfill skips it next run
+
+
+# ---- item_detail serving (DB lane) ---------------------------------------------------------------
+
+def _get(db, user, monkeypatch, path):
+    monkeypatch.setattr(state, "_configured_cache", True)  # pass the request gate
+    app.dependency_overrides[get_db] = lambda: db
+    app.dependency_overrides[current_user] = lambda: user
+    try:
+        return TestClient(app).get(path)
+    finally:
+        app.dependency_overrides.clear()
+
+
+def _user(db, email):
+    u = User(email=email)
+    db.add(u)
+    db.flush()
+    return u
+
+
+def test_item_detail_movie_serves_from_row_despite_live_outage(db, monkeypatch):
+    """An enriched movie serves cast/IMDb/tagline from the DB row even when the live Plex call raises —
+    only markers/streams (which need the live meta) degrade."""
+    lib = PlexLibrary(plex_key="1", title="Movies", kind="movie", enabled=True)
+    db.add(lib)
+    db.flush()
+    from datetime import datetime, timezone
+    mv = PlexItem(
+        rating_key="m1", library_id=lib.id, kind="movie", title="The Godfather",
+        genres=["Crime", "Drama"], directors=["Francis Ford Coppola"], studio="Paramount",
+        content_rating="R", imdb_rating=8.7, imdb_id="tt0068646",
+        tagline="An offer you can't refuse.",
+        full_cast=[{"name": "Marlon Brando", "role": "Vito Corleone", "thumb": None}],
+        people_enriched_at=datetime.now(timezone.utc),
+    )
+    db.add(mv)
+    db.commit()
+    user = _user(db, "outage@example.com")
+    db.commit()
+
+    monkeypatch.setattr(browse, "PlexClient", lambda db: _StubClient(raise_=True))
+    resp = _get(db, user, monkeypatch, "/api/plex/item/m1")
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["imdb_rating"] == 8.7
+    assert body["imdb_id"] == "tt0068646"
+    assert body["imdb_url"] == "https://www.imdb.com/title/tt0068646/"
+    assert body["tagline"] == "An offer you can't refuse."
+    assert [c["name"] for c in body["cast"]] == ["Marlon Brando"]
+    assert body["genres"] == ["Crime", "Drama"]
+    assert body["markers"] == []  # live fetch failed → markers degrade, but detail survived
+
+
+def test_item_detail_movie_lazy_fills_when_unenriched(db, monkeypatch):
+    """A not-yet-enriched movie is filled from the live meta on view (and persisted for next time)."""
+    lib = PlexLibrary(plex_key="1", title="Movies", kind="movie", enabled=True)
+    db.add(lib)
+    db.flush()
+    mv = PlexItem(rating_key="m1", library_id=lib.id, kind="movie", title="The Godfather")
+    db.add(mv)
+    db.commit()
+    user = _user(db, "lazy@example.com")
+    db.commit()
+
+    monkeypatch.setattr(browse, "PlexClient", lambda db: _StubClient(RICH_META))
+    resp = _get(db, user, monkeypatch, "/api/plex/item/m1")
+    assert resp.status_code == 200, resp.text
+    assert resp.json()["imdb_id"] == "tt0068646"
+    db.refresh(mv)
+    assert mv.imdb_id == "tt0068646"  # persisted
+    assert mv.people_enriched_at is not None
+    assert [c["name"] for c in mv.full_cast] == ["Marlon Brando", "Al Pacino"]
+
+
+def test_item_detail_episode_serves_rich_from_live(db, monkeypatch):
+    """Episodes are never enriched (not in the grid, no HU overlay), so their detail is parsed from the
+    live meta the endpoint fetches for markers/streams."""
+    lib = PlexLibrary(plex_key="2", title="Shows", kind="show", enabled=True)
+    db.add(lib)
+    db.flush()
+    show = PlexShow(rating_key="s1", library_id=lib.id, title="A Show")
+    db.add(show)
+    db.flush()
+    ep = PlexItem(
+        rating_key="e1", library_id=lib.id, kind="episode", title="Pilot", show_id=show.id
+    )
+    db.add(ep)
+    db.commit()
+    user = _user(db, "ep@example.com")
+    db.commit()
+
+    monkeypatch.setattr(browse, "PlexClient", lambda db: _StubClient(RICH_META))
+    resp = _get(db, user, monkeypatch, "/api/plex/item/e1")
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["imdb_id"] == "tt0068646"  # from the live meta, not the (NULL) row
+    assert [c["name"] for c in body["cast"]] == ["Marlon Brando", "Al Pacino"]
+    db.refresh(ep)
+    assert ep.full_cast is None  # episodes are not persisted/enriched
+
+
+def test_show_detail_serves_from_row(db, monkeypatch):
+    """A show serves cast/IMDb from the DB row; `related` failing (Plex down) must not drop the detail."""
+    lib = PlexLibrary(plex_key="2", title="Shows", kind="show", enabled=True)
+    db.add(lib)
+    db.flush()
+    from datetime import datetime, timezone
+    show = PlexShow(
+        rating_key="s1", library_id=lib.id, title="A Show", genres=["Drama"],
+        imdb_rating=9.1, imdb_id="tt0903747",
+        full_cast=[{"name": "Bryan Cranston", "role": "Walter White", "thumb": None}],
+        people_enriched_at=datetime.now(timezone.utc),
+    )
+    db.add(show)
+    db.commit()
+    user = _user(db, "show@example.com")
+    db.commit()
+
+    # _show_enrichment raises → related degrades to []; the row-served detail must still render.
+    def _boom(db_, rk):
+        raise RuntimeError("plex unavailable")
+
+    monkeypatch.setattr(browse, "_show_enrichment", _boom)
+    resp = _get(db, user, monkeypatch, "/api/plex/show/s1")
+    assert resp.status_code == 200, resp.text
+    body = resp.json()["show"]
+    assert body["imdb_rating"] == 9.1
+    assert body["imdb_id"] == "tt0903747"
+    assert body["imdb_url"] == "https://www.imdb.com/title/tt0903747/"
+    assert [c["name"] for c in body["cast"]] == ["Bryan Cranston"]
+    assert resp.json()["related"] == []