refactor: fix HIGH+MEDIUM architectural violations from code review

HIGH: fix watch_medium data-loss bug, standardize error handling on
ApiError, fix dep direction (rss/template-askama no longer dep on
application), extract ImageFetcher port (remove reqwest from app layer),
move event construction from save_review to use case, extract
infra-wiring crate (DbPool/EventBusBackend dedup), deduplicate
presentation helpers (encode_error, export streaming, multipart parsing)

MEDIUM: split LocalApContentQuery god-trait 10→3 methods, dedup movie
resolution orchestration, add RemoteActorDto/PersonDto mappers, move
AppConfig to infra-wiring, fix SocialQueryPort Uuid→UserId, replace
stringly-typed api-types with domain enums, move count_reviews_in_year
to StatsRepository, dedup event publisher cfg blocks, extract
should_enrich, move group_by_month to application, dedup
count_local_posts, add FederationFlags Default, TUI input helper +
ShowError rename + typed auth errors, api-types cleanup
(UserSettingsDto/UserProfileBase/PreviewRowData)

102 files changed, -681 lines net

crates/domain/src/testing/fakes.rs

@@ -191,7 +191,24 @@ impl DiaryRepository for FakeDiaryRepository {
 
 // ── FakeStatsRepository ─────────────────────────────────────────────────────
 
-pub struct FakeStatsRepository;
+pub struct FakeStatsRepository {
+    review_counts: Mutex<HashMap<(Uuid, u16), u32>>,
+}
+
+impl FakeStatsRepository {
+    pub fn new() -> Arc<Self> {
+        Arc::new(Self {
+            review_counts: Mutex::new(HashMap::new()),
+        })
+    }
+
+    pub fn set_review_count(&self, user_id: Uuid, year: u16, count: u32) {
+        self.review_counts
+            .lock()
+            .unwrap()
+            .insert((user_id, year), count);
+    }
+}
 
 #[async_trait]
 impl StatsRepository for FakeStatsRepository {
@@ -211,6 +228,11 @@ impl StatsRepository for FakeStatsRepository {
             max_director_count: 0,
         })
     }
+
+    async fn count_reviews_in_year(&self, user_id: &UserId, year: u16) -> Result<u32, DomainError> {
+        let counts = self.review_counts.lock().unwrap();
+        Ok(counts.get(&(user_id.value(), year)).copied().unwrap_or(0))
+    }
 }
 
 // ── FakePersonQuery ─────────────────────────────────────────────────────────