feat(db): store poster, backdrop and rating on titles

§9.6 keeps rich detail out of the database except for the three fields
pure-SQL views need. Adds poster_path, backdrop_path and vote_average to
movies and series, written by the daily metadata refresh in both lanes
and filled at add time from the TMDB response the create flows already
fetch.

crates/arr-meta/src/model.rs

@@ -41,7 +41,9 @@ impl MovieSearchResult {
 }
 
 /// A movie as TMDB describes it, reduced to what this project uses.
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+///
+/// `vote_average` is the one float, so this is `PartialEq` only.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct Movie {
     /// TMDB's own id.
     pub tmdb_id: u32,
@@ -77,6 +79,11 @@ pub struct Movie {
     pub overview: Option<String>,
     /// Path fragment, not a URL.
     pub poster_path: Option<String>,
+    /// Path fragment, not a URL. §9.6 stores this on the row alongside
+    /// [`Movie::poster_path`] and `vote_average`.
+    pub backdrop_path: Option<String>,
+    /// TMDB's rating, out of 10. Stored with the artwork (§9.6).
+    pub vote_average: f64,
 }
 
 impl Movie {
@@ -114,7 +121,9 @@ impl SeriesSearchResult {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+/// TMDB's slice for series. `vote_average` is the one float, so this is
+/// `PartialEq` only.
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct Series {
     pub tmdb_id: u32,
     pub tvdb_id: Option<u32>,
@@ -124,6 +133,11 @@ pub struct Series {
     pub status: String,
     pub overview: Option<String>,
     pub poster_path: Option<String>,
+    /// §9.6 stores this on the row alongside `poster_path` and
+    /// [`Series::vote_average`].
+    pub backdrop_path: Option<String>,
+    /// TMDB's rating, out of 10. Stored with the artwork (§9.6).
+    pub vote_average: f64,
     pub seasons: Vec<SeasonSummary>,
 }
 
@@ -318,6 +332,10 @@ pub(crate) struct RawSeries {
     #[serde(default)]
     poster_path: Option<String>,
     #[serde(default)]
+    backdrop_path: Option<String>,
+    #[serde(default)]
+    vote_average: f64,
+    #[serde(default)]
     seasons: Vec<RawSeasonSummary>,
     #[serde(default)]
     external_ids: Option<RawExternalIds>,
@@ -353,6 +371,8 @@ impl From<RawSeries> for Series {
             status: raw.status,
             overview: non_empty(raw.overview),
             poster_path: non_empty(raw.poster_path),
+            backdrop_path: non_empty(raw.backdrop_path),
+            vote_average: raw.vote_average,
             seasons: raw
                 .seasons
                 .into_iter()
@@ -478,6 +498,10 @@ pub(crate) struct RawMovie {
     #[serde(default)]
     poster_path: Option<String>,
     #[serde(default)]
+    backdrop_path: Option<String>,
+    #[serde(default)]
+    vote_average: f64,
+    #[serde(default)]
     release_dates: Option<RawReleaseDates>,
 }
 
@@ -537,6 +561,8 @@ impl From<RawMovie> for Movie {
             status: raw.status,
             overview: non_empty(raw.overview),
             poster_path: non_empty(raw.poster_path),
+            backdrop_path: non_empty(raw.backdrop_path),
+            vote_average: raw.vote_average,
         }
     }
 }