refactor(plex): the unit's tables move into plex/models

PlexLibrary, PlexShow, PlexSeason, PlexItem, PlexPerson, PlexCollection, PlexState, PlexLink,
PlexPlaylist and PlexPlaylistItem leave app/models.py for app/plex/models.py; app.tables registers
them. Every import is re-pointed; no schema change.

backend/app/plex/cards.py

@@ -5,7 +5,7 @@ router. Pure functions — no DB, no request state."""
 
 from typing import NamedTuple
 
-from app.models import PlexItem, PlexShow, PlexState
+from app.plex.models import PlexItem, PlexShow, PlexState
 
 
 class ShowState(NamedTuple):

backend/app/plex/imgcache.py

@@ -15,7 +15,7 @@ from fastapi import Response
 from sqlalchemy.orm import Session
 
 from app import logs
-from app.models import PlexCollection, PlexItem, PlexSeason, PlexShow
+from app.plex.models import PlexCollection, PlexItem, PlexSeason, PlexShow
 from app.plex.cache import CACHE_DIR
 from app.plex.lookups import by_rating_key
 

backend/app/plex/models.py

@@ -0,0 +1,463 @@
+"""Plex's tables: a self-contained catalog mirrored from a local Plex server — libraries, shows,
+seasons, items, people, collections, the server's playlists — and each user's private part of it:
+watch state, the account link, their own playlists. Only this unit writes them; another unit reads
+them along a declared edge, or asks this unit's service."""
+
+from datetime import datetime
+
+from sqlalchemy import (
+    BigInteger,
+    Boolean,
+    Computed,
+    Date,
+    DateTime,
+    Float,
+    ForeignKey,
+    Index,
+    Integer,
+    JSON,
+    String,
+    Text,
+    UniqueConstraint,
+)
+from sqlalchemy.dialects.postgresql import JSONB, TSVECTOR
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db import Base
+from app.models import TimestampMixin, UpdatedAtMixin
+
+
+# --- Plex integration (optional) -------------------------------------------------------------
+# A dedicated, self-contained catalog mirrored from a locally-reachable Plex server. Playback is
+# from the LOCAL physical file (Plex is metadata only); per-user watch state lives in plex_states
+# so it works for users without a Plex account. Mirrors the app's "shared catalog, private
+# per-user state" model. The weighted FTS search_vector uses the same unaccent_simple config as
+# `videos` (migrations 0031/0032).
+
+
+class PlexLibrary(Base, TimestampMixin, UpdatedAtMixin):
+    """A mirrored Plex library section. Only `enabled` sections are exposed in the feed.
+    `plex_key` is the section id on the Plex server."""
+
+    __tablename__ = "plex_libraries"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    plex_key: Mapped[str] = mapped_column(String(32), unique=True, index=True)
+    title: Mapped[str] = mapped_column(String(255))
+    kind: Mapped[str] = mapped_column(String(16))  # "movie" | "show"
+    enabled: Mapped[bool] = mapped_column(Boolean, default=True, server_default="true")
+    synced_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    # HU-overlay support. `metadata_lang` tags the section's metadata language. An OVERLAY
+    # library (overlay_of set) is the Hungarian-metadata twin of another section: it is never browsable
+    # on its own — its titles' HU fields are written onto the matched EN rows (paired by `guid`).
+    metadata_lang: Mapped[str] = mapped_column(String(8), default="en", server_default="en")
+    overlay_of: Mapped[int | None] = mapped_column(
+        ForeignKey("plex_libraries.id", ondelete="SET NULL"), index=True
+    )
+
+
+class PlexShow(Base, TimestampMixin, UpdatedAtMixin):
+    """A TV show (grandparent of episodes) — holds poster + summary for the drill-down page, plus
+    the same filterable metadata as movies (genres/rating/content_rating/studio/people) so the TV
+    grid can be filtered/sorted like the movie grid. All mirrored cheaply from the show listing."""
+
+    __tablename__ = "plex_shows"
+    __table_args__ = (
+        Index("ix_plex_shows_genres_gin", "genres", postgresql_using="gin"),
+        Index("ix_plex_shows_directors_gin", "directors", postgresql_using="gin"),
+        Index("ix_plex_shows_cast_gin", "cast_names", postgresql_using="gin"),
+        Index("ix_plex_shows_genres_hu_gin", "genres_hu", postgresql_using="gin"),
+        # ix_plex_shows_collections_gin already created with collections (migration 0047).
+    )
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    rating_key: Mapped[str] = mapped_column(String(32), unique=True, index=True)
+    library_id: Mapped[int] = mapped_column(
+        ForeignKey("plex_libraries.id", ondelete="CASCADE"), index=True
+    )
+    # Canonical external id (e.g. "tmdb:12345") — the key that pairs this EN row with its HU-overlay
+    # twin during sync. Indexed for the guid->row overlay match.
+    guid: Mapped[str | None] = mapped_column(String(64), index=True)
+    title: Mapped[str] = mapped_column(String(512))
+    summary: Mapped[str | None] = mapped_column(Text)
+    year: Mapped[int | None] = mapped_column(Integer)
+    thumb_key: Mapped[str | None] = mapped_column(
+        String(512)
+    )  # Plex thumb path (proxied, not stored)
+    art_key: Mapped[str | None] = mapped_column(String(512))
+    child_count: Mapped[int | None] = mapped_column(Integer)  # seasons
+    collection_keys: Mapped[list | None] = mapped_column(
+        JSONB(none_as_null=True)
+    )  # Plex collections this show is in
+    added_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), index=True)
+    # Filterable / orderable metadata mirrored from the show section listing (parallels PlexItem).
+    rating: Mapped[float | None] = mapped_column(Float, index=True)  # Plex audienceRating (~IMDb)
+    content_rating: Mapped[str | None] = mapped_column(String(16), index=True)
+    studio: Mapped[str | None] = mapped_column(String(255), index=True)  # network/studio
+    originally_available_at: Mapped[Date | None] = mapped_column(Date, index=True)  # first air date
+    # none_as_null: an empty tag list must persist as SQL NULL, not JSON `null`. Without it a Python
+    # None round-trips as a JSON scalar that jsonb_array_elements_text() can't unnest ("cannot extract
+    # elements from a scalar") — the trap a metadata-poor library sprang on /facets. Same on plex_items.
+    genres: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    directors: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    cast_names: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    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 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}]
+    # --- TMDB enrichment: see the identical block on plex_items for the full rationale. Additive;
+    #     served from the row; NULL until enriched. (`budget`/`revenue` stay NULL for shows — TV has none.) ---
+    tmdb_id: Mapped[int | None] = mapped_column(Integer)
+    tmdb_enriched_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    tmdb_rating: Mapped[float | None] = mapped_column(Float)  # TMDb vote_average (0–10)
+    tmdb_vote_count: Mapped[int | None] = mapped_column(Integer)
+    budget: Mapped[int | None] = mapped_column(BigInteger)
+    revenue: Mapped[int | None] = mapped_column(BigInteger)
+    keywords: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))  # [str]
+    crew: Mapped[list | None] = mapped_column(
+        JSONB(none_as_null=True)
+    )  # [{name, job, tmdb_id, thumb}]
+    studios: Mapped[list | None] = mapped_column(
+        JSONB(none_as_null=True)
+    )  # TMDB production companies [str]
+    production_countries: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))  # [str]
+    recommendations: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    backdrops: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    # Hungarian-metadata twin fields, written by the overlay sync. 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))
+    tagline_hu: Mapped[str | None] = mapped_column(Text)  # the HU overlay's tagline
+    summary_hu: Mapped[str | None] = mapped_column(Text)
+    genres_hu: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    search_vector: Mapped[object | None] = mapped_column(
+        TSVECTOR,
+        Computed(
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(title, '')), 'A') || "
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(people_text, '')), 'B') || "
+            "setweight(to_tsvector('public.unaccent_simple', left(coalesce(summary, ''), 1000)), 'C')",
+            persisted=True,
+        ),
+    )
+    search_vector_hu: Mapped[object | None] = mapped_column(
+        TSVECTOR,
+        Computed(
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(title_hu, '')), 'A') || "
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(people_text, '')), 'B') || "
+            "setweight(to_tsvector('public.unaccent_simple', left(coalesce(summary_hu, ''), 1000)), 'C')",
+            persisted=True,
+        ),
+    )
+
+
+class PlexSeason(Base, TimestampMixin, UpdatedAtMixin):
+    """A season under a show — used to order episodes for prev/next stepping."""
+
+    __tablename__ = "plex_seasons"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    rating_key: Mapped[str] = mapped_column(String(32), unique=True, index=True)
+    show_id: Mapped[int] = mapped_column(
+        ForeignKey("plex_shows.id", ondelete="CASCADE"), index=True
+    )
+    title: Mapped[str | None] = mapped_column(String(255))
+    season_number: Mapped[int | None] = mapped_column(Integer, index=True)
+    thumb_key: Mapped[str | None] = mapped_column(String(512))
+
+
+class PlexItem(Base, TimestampMixin, UpdatedAtMixin):
+    """A playable LEAF — a movie or a single episode. This is what the feed lists and the player
+    plays. Movies carry `library_id` and no parents; episodes carry show/season refs +
+    season/episode numbers. `file_path` is the Plex-side absolute path of the physical media,
+    mapped through `plex_path_map` to a local mount at playback time. `playable` is the
+    ffprobe-derived browser-compatibility class (direct | remux | transcode)."""
+
+    __tablename__ = "plex_items"
+    __table_args__ = (
+        Index("ix_plex_items_show_order", "show_id", "season_number", "episode_number"),
+        Index("ix_plex_items_genres_gin", "genres", postgresql_using="gin"),
+        Index("ix_plex_items_directors_gin", "directors", postgresql_using="gin"),
+        Index("ix_plex_items_cast_gin", "cast_names", postgresql_using="gin"),
+        Index("ix_plex_items_collections_gin", "collection_keys", postgresql_using="gin"),
+        Index("ix_plex_items_genres_hu_gin", "genres_hu", postgresql_using="gin"),
+    )
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    rating_key: Mapped[str] = mapped_column(String(32), unique=True, index=True)
+    library_id: Mapped[int] = mapped_column(
+        ForeignKey("plex_libraries.id", ondelete="CASCADE"), index=True
+    )
+    kind: Mapped[str] = mapped_column(String(16), index=True)  # "movie" | "episode"
+    # Canonical external id (e.g. "tmdb:12345") — pairs a MOVIE row with its HU-overlay twin during
+    # sync; indexed for the guid->row match. Episodes carry it too but it's unused for them.
+    guid: Mapped[str | None] = mapped_column(String(64), index=True)
+    show_id: Mapped[int | None] = mapped_column(
+        ForeignKey("plex_shows.id", ondelete="CASCADE"), index=True
+    )
+    season_id: Mapped[int | None] = mapped_column(
+        ForeignKey("plex_seasons.id", ondelete="CASCADE"), index=True
+    )
+    season_number: Mapped[int | None] = mapped_column(Integer)
+    episode_number: Mapped[int | None] = mapped_column(Integer)
+    title: Mapped[str] = mapped_column(String(512))
+    summary: Mapped[str | None] = mapped_column(Text)
+    year: Mapped[int | None] = mapped_column(Integer)
+    duration_s: Mapped[int | None] = mapped_column(Integer)
+    thumb_key: Mapped[str | None] = mapped_column(String(512))
+    art_key: Mapped[str | None] = mapped_column(String(512))
+    cast: Mapped[list | None] = mapped_column(JSON)  # [role names]
+    # Physical media (from the Plex Part).
+    file_path: Mapped[str | None] = mapped_column(Text)  # Plex-side absolute path
+    part_key: Mapped[str | None] = mapped_column(String(255))  # /library/parts/... (fallback fetch)
+    container: Mapped[str | None] = mapped_column(String(16))
+    codec_video: Mapped[str | None] = mapped_column(String(32))
+    codec_audio: Mapped[str | None] = mapped_column(String(32))
+    size_bytes: Mapped[int | None] = mapped_column(BigInteger)
+    # Browser-playability class from ffprobe: "direct" | "remux" | "transcode" (None = unprobed).
+    playable: Mapped[str | None] = mapped_column(String(12), index=True)
+    probed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    # Transcode HW-capability facet (the playback-class filter). NULL for non-transcode items; for a
+    # `playable="transcode"` item: True = the prod iGPU can hardware-transcode it (codec is HW-decodable
+    # AND the source is 8-bit SDR), False = software libx264 only (AV1/XviD, or a 10-bit/HDR source that
+    # breaks the VAAPI nv12 pipeline — see plex/stream.py). Derived by `plex.sync.transcode_hw_capable`:
+    # set codec-only at sync (bit depth unknown from the cheap listing), then refined by the bit-depth
+    # backfill (`_probe_media_batch`) which downgrades a 10-bit/HDR HEVC to False. The one filterable
+    # home of the invariant `_want_hw`'s source gate computes at play time — kept in sync via the shared
+    # classifier so the catalog facet and the runtime encoder choice never disagree by codec.
+    transcode_hw: Mapped[bool | None] = mapped_column(Boolean, index=True)
+    # Video bit depth (8/10/12…) from the Plex media Stream, filled by the bit-depth backfill. NULL =
+    # not yet probed. Surfaced on the info page (e.g. "HEVC · 10-bit") and feeds `transcode_hw`.
+    video_bit_depth: Mapped[int | None] = mapped_column(Integer)
+    # Watermark for the bit-depth backfill: when this item's media Stream was last probed for
+    # bit-depth/HDR. NULL = never (the backfill's work-list). Only HW-decodable transcode items are
+    # probed (the rest are SW-only by codec and need no bit-depth); see `_probe_media_batch`.
+    media_probed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    added_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), index=True)
+    # Filterable / orderable metadata mirrored from the Plex section listing (no extra API calls;
+    # `rating` = Plex audienceRating, which is ~the IMDb score). The arrays back genre/person/studio
+    # filters (GIN-indexed) and double as content signals for a future watch-habit recommender.
+    rating: Mapped[float | None] = mapped_column(Float, index=True)
+    content_rating: Mapped[str | None] = mapped_column(String(16), index=True)
+    studio: Mapped[str | None] = mapped_column(String(255), index=True)
+    originally_available_at: Mapped[Date | None] = mapped_column(Date, index=True)
+    genres: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    directors: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    cast_names: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    # rating_keys of the Plex collections this movie belongs to (GIN — filter + card-strip siblings).
+    collection_keys: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    # Cast + director names, space-joined — folded into search_vector (weight B) so the search box
+    # finds titles by a person's name (and ranks them above summary-only mentions).
+    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 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}]
+    # --- TMDB enrichment: matched by the canonical `guid` ("tmdb:12345"), filled by the TMDB
+    #     backfill job, SERVED FROM THIS ROW (never a live TMDB call). Additive — imdb_rating/rating
+    #     above stay Plex-sourced; `tmdb_rating` is the distinct TMDb community score. NULL until enriched;
+    #     `tmdb_enriched_at` is the "tried" watermark (stamped on a definitive no-match too, so an
+    #     unresolvable title isn't re-fetched every run; left NULL only on a transient fetch error). ---
+    tmdb_id: Mapped[int | None] = mapped_column(Integer)
+    tmdb_enriched_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    tmdb_rating: Mapped[float | None] = mapped_column(Float)  # TMDb vote_average (0–10)
+    tmdb_vote_count: Mapped[int | None] = mapped_column(Integer)
+    budget: Mapped[int | None] = mapped_column(BigInteger)  # USD (movies; TV has none)
+    revenue: Mapped[int | None] = mapped_column(BigInteger)
+    keywords: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))  # [str]
+    crew: Mapped[list | None] = mapped_column(
+        JSONB(none_as_null=True)
+    )  # [{name, job, tmdb_id, thumb}]
+    studios: Mapped[list | None] = mapped_column(
+        JSONB(none_as_null=True)
+    )  # TMDB production companies [str]
+    production_countries: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))  # [str]
+    # [{tmdb_id, title, poster, media_type}] — resolved to library rows (by guid) at serve time.
+    recommendations: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    backdrops: Mapped[list | None] = mapped_column(
+        JSONB(none_as_null=True)
+    )  # TMDB backdrop file_paths [str] (crossfade pool)
+    # Hungarian-metadata twin fields, written by the overlay sync. 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))
+    tagline_hu: Mapped[str | None] = mapped_column(Text)  # the HU overlay's tagline
+    summary_hu: Mapped[str | None] = mapped_column(Text)
+    genres_hu: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))
+    search_vector: Mapped[object | None] = mapped_column(
+        TSVECTOR,
+        Computed(
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(title, '')), 'A') || "
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(people_text, '')), 'B') || "
+            "setweight(to_tsvector('public.unaccent_simple', left(coalesce(summary, ''), 1000)), 'C')",
+            persisted=True,
+        ),
+    )
+    search_vector_hu: Mapped[object | None] = mapped_column(
+        TSVECTOR,
+        Computed(
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(title_hu, '')), 'A') || "
+            "setweight(to_tsvector('public.unaccent_simple', coalesce(people_text, '')), 'B') || "
+            "setweight(to_tsvector('public.unaccent_simple', left(coalesce(summary_hu, ''), 1000)), 'C')",
+            persisted=True,
+        ),
+    )
+
+
+class PlexPerson(Base, TimestampMixin, UpdatedAtMixin):
+    """A small cast/crew headshot cache, keyed by name, so person filter-chips (the cards for the
+    actors currently in the filter) can show a photo + count without a live per-card metadata fetch.
+    Populated opportunistically when an item's RICH metadata is fetched — the info-page view and the
+    periodic rich re-sync — since the cheap section listing that drives the main sync only carries the
+    top few cast. Rows whose name no longer appears in ANY item's cast_names/directors (a library
+    removal orphaned them) are pruned by the maintenance sweep, mirroring how Plex drops orphaned
+    metadata. The filterable cast lives in plex_items/plex_shows.cast_names (self-cleaning with the
+    row); this table is the people's own facts: the headshot link, the TMDB link and the TMDB bio
+    (the headshot FILE lives in the image cache, filled by the people_enrich job)."""
+
+    __tablename__ = "plex_people"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str] = mapped_column(String(255), unique=True, index=True)
+    photo_thumb: Mapped[str | None] = mapped_column(Text)  # proxied /person-image URL, or None
+    # TMDB person id, linked by name from a title's TMDB credits (the /person
+    # biography fetch builds on it). NULL until a TMDB-enriched title names this person.
+    tmdb_person_id: Mapped[int | None] = mapped_column(Integer)
+    # --- TMDB person enrichment: fetched from /person/{tmdb_person_id} by the people_enrich job,
+    #     or by the first person-page open the job hasn't reached, then SERVED FROM THE ROW. `tmdb_enriched_at` is the watermark (set even on a
+    #     no-op fetch so it isn't retried every open). `known_for` = top combined-credits [{tmdb_id,
+    #     media_type, title}], resolved to library rows by guid at serve time (like recommendations). ---
+    biography: Mapped[str | None] = mapped_column(Text)
+    # TMDB's Hungarian biography, from the same request's `translations`; a Hungarian reader is
+    # served it, and the instance-language `biography` when TMDB has none. Birthplace, aliases and
+    # keywords have no Hungarian on TMDB, so they stay in the instance language.
+    biography_hu: Mapped[str | None] = mapped_column(Text)
+    birthday: Mapped[str | None] = mapped_column(String(10))  # "YYYY-MM-DD", served as-is
+    deathday: Mapped[str | None] = mapped_column(String(10))
+    place_of_birth: Mapped[str | None] = mapped_column(Text)
+    known_for_department: Mapped[str | None] = mapped_column(String(64))
+    also_known_as: Mapped[list | None] = mapped_column(JSONB(none_as_null=True))  # [str]
+    known_for: Mapped[list | None] = mapped_column(
+        JSONB(none_as_null=True)
+    )  # [{tmdb_id, media_type, title}]
+    tmdb_enriched_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+
+
+class PlexCollection(Base, TimestampMixin, UpdatedAtMixin):
+    """A mirrored Plex collection (a grouping of movies or shows — franchises like Avatar, curated
+    sets like MCU, or auto/community lists like IMDb Top 250). Mirrored in full by the background
+    sync so reads never hit Plex's slow collection queries. Membership is stored as `collection_keys`
+    on the member movies (plex_items) / shows (plex_shows). `smart` = Plex's query-based flag;
+    `editable` = we may write changes back to Plex (default False = read-only; set for curated ones)."""
+
+    __tablename__ = "plex_collections"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    rating_key: Mapped[str] = mapped_column(String(32), unique=True, index=True)
+    library_id: Mapped[int] = mapped_column(
+        ForeignKey("plex_libraries.id", ondelete="CASCADE"), index=True
+    )
+    title: Mapped[str] = mapped_column(String(512))
+    summary: Mapped[str | None] = mapped_column(Text)
+    thumb_key: Mapped[str | None] = mapped_column(String(512))
+    child_count: Mapped[int | None] = mapped_column(Integer)
+    smart: Mapped[bool] = mapped_column(Boolean, default=False, server_default="false")
+    editable: Mapped[bool] = mapped_column(Boolean, default=False, server_default="false")
+    synced_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+
+
+class PlexState(Base, UpdatedAtMixin):
+    """Per-user watch state for a Plex item — mirrors VideoState. Lives in Siftlode's own DB so
+    it works for users WITHOUT a Plex account (the whole point of the access-layer design).
+    `synced_to_plex` marks whether this state was pushed back to a linked Plex account."""
+
+    __tablename__ = "plex_states"
+    __table_args__ = (UniqueConstraint("user_id", "item_id", name="uq_plex_user_item"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"))
+    item_id: Mapped[int] = mapped_column(
+        ForeignKey("plex_items.id", ondelete="CASCADE"), index=True
+    )
+    status: Mapped[str] = mapped_column(String(12), default="new", server_default="new")
+    position_seconds: Mapped[int] = mapped_column(
+        Integer, default=0, server_default="0", nullable=False
+    )
+    watched_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    progress_updated_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    synced_to_plex: Mapped[bool] = mapped_column(Boolean, default=False, server_default="false")
+
+
+class PlexLink(Base, UpdatedAtMixin):
+    """Links a Siftlode user to a Plex account for two-way watch-state sync (one row per user).
+
+    For the owner (the MVP scope) the row uses the server's admin token — `uses_admin=True`,
+    `plex_token_enc=None` — so no separate Plex login is needed; the admin token already reads/writes
+    the owner account's watch state. `plex_account_id` is that Plex account's numeric id, used to
+    filter the shared watch-history feed to this user (Phase C). Reserved for later: a friend can link
+    their OWN Plex account via PIN OAuth, storing a personal `plex_token_enc` (uses_admin=False) — the
+    sync loop then iterates link rows uniformly.
+
+    `initial_import_done` guards the one-time "Plex is master" import; `last_watch_sync_at` is the
+    high-water mark for the incremental Plex→Siftlode pass."""
+
+    __tablename__ = "plex_link"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    user_id: Mapped[int] = mapped_column(
+        ForeignKey("users.id", ondelete="CASCADE"), unique=True, index=True
+    )
+    uses_admin: Mapped[bool] = mapped_column(Boolean, default=True, server_default="true")
+    plex_token_enc: Mapped[str | None] = mapped_column(Text)  # P5b friend tokens (encrypted)
+    plex_account_id: Mapped[int | None] = mapped_column(Integer)
+    plex_username: Mapped[str | None] = mapped_column(String(255))
+    sync_enabled: Mapped[bool] = mapped_column(Boolean, default=False, server_default="false")
+    initial_import_done: Mapped[bool] = mapped_column(
+        Boolean, default=False, server_default="false"
+    )
+    last_watch_sync_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+    linked_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
+
+
+class PlexPlaylist(Base, TimestampMixin, UpdatedAtMixin):
+    """A per-user ORDERED watch-list of Plex items — Siftlode-native (lives in our own DB, works for
+    users WITHOUT a Plex account, like plex_states). Unlike collections (shared, library-level), a
+    playlist is owned by one user and its items are ordered. Optional Plex-direction sync is a later
+    phase (`plex_rating_key` set once pushed back to the owner's Plex account)."""
+
+    __tablename__ = "plex_playlists"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    title: Mapped[str] = mapped_column(String(512))
+    plex_rating_key: Mapped[str | None] = mapped_column(String(32))
+
+
+class PlexPlaylistItem(Base):
+    """One ordered entry in a playlist. `position` (0-based) orders playback."""
+
+    __tablename__ = "plex_playlist_items"
+    __table_args__ = (UniqueConstraint("playlist_id", "item_id", name="uq_plex_playlist_item"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    playlist_id: Mapped[int] = mapped_column(ForeignKey("plex_playlists.id", ondelete="CASCADE"))
+    item_id: Mapped[int] = mapped_column(
+        ForeignKey("plex_items.id", ondelete="CASCADE"), index=True
+    )
+    position: Mapped[int] = mapped_column(Integer, default=0, server_default="0", nullable=False)

backend/app/plex/overlay.py

@@ -13,7 +13,7 @@ from sqlalchemy import select
 from sqlalchemy.orm import Session
 
 from app import logs, sysconfig
-from app.models import PlexItem, PlexLibrary, PlexShow
+from app.plex.models import PlexItem, PlexLibrary, PlexShow
 from app.plex import sync as plex_sync
 from app.plex.client import PlexClient
 from app.plex.genres import hu_genres

backend/app/plex/people.py

@@ -15,7 +15,7 @@ from sqlalchemy.dialects.postgresql import insert as pg_insert
 from sqlalchemy.orm import Session
 
 from app import logs, sysconfig
-from app.models import PlexPerson
+from app.plex.models import PlexPerson
 from app.plex import imgcache
 from app.plex.client import PlexClient, PlexError, PlexNotConfigured
 

backend/app/plex/query.py

@@ -10,7 +10,7 @@ from sqlalchemy import and_, case, func, or_, select, type_coerce
 from sqlalchemy.dialects.postgresql import JSONB
 from sqlalchemy.orm import Session
 
-from app.models import PlexItem, PlexLibrary
+from app.plex.models import PlexItem, PlexLibrary
 from app.plex.genres import hu_genre
 
 TS_CONFIG = "public.unaccent_simple"

backend/app/plex/rollup.py

@@ -8,7 +8,7 @@ from datetime import datetime, timezone
 from sqlalchemy import and_, case, func, or_, select
 from sqlalchemy.orm import Session, aliased
 
-from app.models import PlexItem, PlexState
+from app.plex.models import PlexItem, PlexState
 from app.plex.cards import ShowState
 
 # Sort sentinel for a rail row whose timestamp is missing, so `key=lambda r: r[0] or NO_TS` reads the

backend/app/plex/stream.py

@@ -33,7 +33,7 @@ from sqlalchemy.orm import Session as DbSession
 from app import logs, sysconfig
 from app.config import settings
 from app.downloads.edit import encode_thread_cap
-from app.models import PlexItem
+from app.plex.models import PlexItem
 from app.plex import paths
 from app.plex.sync import HDR_TRANSFERS, HW_DECODABLE_CODECS
 

backend/app/plex/subtitles.py

@@ -47,7 +47,7 @@ from sqlalchemy.orm import Session
 
 from app import logs
 from app.db import SessionLocal
-from app.models import PlexItem
+from app.plex.models import PlexItem
 from app.plex import paths as plex_paths
 from app.plex.cache import CACHE_DIR
 from app.plex.client import PlexClient, PlexError

backend/app/plex/sync.py

@@ -21,7 +21,7 @@ from sqlalchemy import func, select
 from sqlalchemy.orm import Session
 
 from app import logs, sysconfig
-from app.models import PlexCollection, PlexItem, PlexLibrary, PlexSeason, PlexShow
+from app.plex.models import PlexCollection, PlexItem, PlexLibrary, PlexSeason, PlexShow
 from app.plex import detail, overlay, people
 from app.plex.client import PlexClient, PlexError, PlexNotConfigured
 from app.plex.genres import hu_genres

backend/app/plex/tmdb.py

@@ -22,7 +22,7 @@ from sqlalchemy.orm import Session
 
 from app import logs, sysconfig
 from app.config import settings
-from app.models import PlexItem, PlexPerson, PlexShow
+from app.plex.models import PlexItem, PlexPerson, PlexShow
 from app.plex.cards import display_title
 from app.plex.people import people_by_credits, warm_portraits
 

backend/app/plex/watch_sync.py

@@ -29,7 +29,7 @@ from sqlalchemy.orm import Session
 
 from app import logs, sysconfig
 from app.db import SessionLocal
-from app.models import PlexItem, PlexLibrary, PlexLink, PlexState
+from app.plex.models import PlexItem, PlexLibrary, PlexLink, PlexState
 from app.plex.client import PlexClient, PlexError, PlexNotConfigured
 from app.plex.sync import (
     _TYPE_EPISODE,