feat(core,meta,app,android,ios,cli): TVmaze for the shows AniList does not have

With AniList chosen, a title AniList has no match for is now searched on
TVmaze, keyless, before it is given up on. One provider for the whole library
left live-action shows in a share of anime unmatched, and switching to TMDB
would have dropped every AniList match, chain and shelf.

The service holds a chain of providers. A match is stored under the provider
that gave it, and enrichment and refreshes go to that provider; a miss is
stored under the last provider asked, and is_fresh only trusts a miss from the
end of the chain, so AniList misses stored before this are asked again at once.
A provider failure still ends the lookup instead of falling through.

The hand matcher searches every provider in the chain and labels each result
with its source. TVmaze is never offered in the settings and is not asked
about titles known to be films.

crates/pstr-android/src/lib.rs

@@ -304,6 +304,9 @@ pub enum TitleType {
 pub enum MetadataProvider {
     AniList,
     Tmdb,
+    /// Never chosen in the settings: what AniList hands a show it does not
+    /// have. Seen on a [`MatchRecord`] from a hand search.
+    TvMaze,
 }
 
 /// A palette family. The shared `pstr_core::appearance::Flavor`.
@@ -1746,7 +1749,7 @@ impl AndroidEngine {
         spawned(&runtime, async move {
             let service = self.metadata_service()?;
             let metadata = title_metadata(found);
-            if metadata.provider != service.provider() {
+            if !service.chain().contains(&metadata.provider) {
                 return Err(BridgeError::Failure {
                     reason: "match came from a different metadata provider".to_owned(),
                 });
@@ -1762,7 +1765,7 @@ impl AndroidEngine {
             if let Some(enrichment) = &outcome.enrichment {
                 let stored = self.catalog.lock().set_enrichment(
                     &title_key,
-                    service.provider(),
+                    outcome.provider,
                     now(),
                     enrichment,
                 );
@@ -2363,21 +2366,13 @@ impl AndroidEngine {
     /// behaviour.
     async fn match_titles_inner(&self, force: bool) -> Result<MatchSummary, BridgeError> {
         let service = Arc::new(self.metadata_service()?);
-        let provider = service.provider();
         let (titles, stored) = self.titles_and_metadata()?;
         let enriched = self
             .catalog
             .lock()
             .enrichment_ages()
             .map_err(BridgeError::from_display)?;
-        let pending = pstr_meta::service::plan(
-            titles,
-            &stored,
-            &enriched,
-            provider,
-            service.has_details(),
-            force,
-        );
+        let pending = pstr_meta::service::plan(titles, &stored, &enriched, &service.chain(), force);
 
         let permits = Arc::new(tokio::sync::Semaphore::new(LOOKUP_CONCURRENCY));
         let mut lookups = tokio::task::JoinSet::new();
@@ -2409,7 +2404,7 @@ impl AndroidEngine {
                         summary.episodes += enrichment.episodes.len() as u32;
                         let stored = self.catalog.lock().set_enrichment(
                             &outcome.title_key,
-                            provider,
+                            outcome.provider,
                             now(),
                             enrichment,
                         );
@@ -3685,6 +3680,7 @@ fn metadata_provider(provider: ProviderId) -> MetadataProvider {
     match provider {
         ProviderId::AniList => MetadataProvider::AniList,
         ProviderId::Tmdb => MetadataProvider::Tmdb,
+        ProviderId::TvMaze => MetadataProvider::TvMaze,
     }
 }
 
@@ -3692,6 +3688,7 @@ fn provider_id(provider: MetadataProvider) -> ProviderId {
     match provider {
         MetadataProvider::AniList => ProviderId::AniList,
         MetadataProvider::Tmdb => ProviderId::Tmdb,
+        MetadataProvider::TvMaze => ProviderId::TvMaze,
     }
 }