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/adapters/poster-fetcher/src/lib.rs

@@ -4,7 +4,11 @@ pub use config::PosterFetcherConfig;
 use std::time::Duration;
 
 use async_trait::async_trait;
-use domain::{errors::DomainError, ports::PosterFetcherClient, value_objects::PosterUrl};
+use domain::{
+    errors::DomainError,
+    ports::{ImageFetcher, PosterFetcherClient},
+    value_objects::PosterUrl,
+};
 
 pub struct ReqwestPosterFetcher {
     client: reqwest::Client,
@@ -37,8 +41,32 @@ impl PosterFetcherClient for ReqwestPosterFetcher {
     }
 }
 
+#[async_trait]
+impl ImageFetcher for ReqwestPosterFetcher {
+    async fn fetch_image(&self, url: &str) -> Result<Vec<u8>, DomainError> {
+        let bytes = self
+            .client
+            .get(url)
+            .send()
+            .await
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))?
+            .error_for_status()
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))?
+            .bytes()
+            .await
+            .map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        Ok(bytes.to_vec())
+    }
+}
+
 pub fn create() -> anyhow::Result<std::sync::Arc<dyn domain::ports::PosterFetcherClient>> {
     Ok(std::sync::Arc::new(ReqwestPosterFetcher::new(
         PosterFetcherConfig::from_env(),
     )?))
 }
+
+pub fn create_image_fetcher() -> anyhow::Result<std::sync::Arc<dyn domain::ports::ImageFetcher>> {
+    Ok(std::sync::Arc::new(ReqwestPosterFetcher::new(
+        PosterFetcherConfig::from_env(),
+    )?))
+}