collapse 20 pass-through use cases; handlers call ports directly

delete get/list/list_by_owner channels, get_settings/activity_log admin,
get_item/get_sync_status/list_collections/list_seasons/list_shows/list_genres library,
get/list/delete providers, get/list/patch_label config_snapshots,
get_active/list_history/delete_after schedule — all single-delegation.

remove ChannelQueryDeps, LibraryQueryDeps, deleted query/command structs.
add direct port fields to AppState. update MCP crate accordingly.

crates/application/src/admin/activity_log.rs

@@ -1,12 +0,0 @@
-use domain::models::ActivityEvent;
-use domain::DomainResult;
-
-use super::deps::AdminDeps;
-use super::queries::GetActivityLogQuery;
-
-pub async fn execute(
-    deps: &AdminDeps,
-    query: GetActivityLogQuery,
-) -> DomainResult<Vec<ActivityEvent>> {
-    deps.activity_query.recent(query.limit).await
-}

crates/application/src/admin/get_settings.rs

@@ -1,15 +0,0 @@
-use domain::DomainResult;
-
-use super::deps::AdminDeps;
-use super::queries::GetSettingsQuery;
-
-pub async fn execute(
-    deps: &AdminDeps,
-    _query: GetSettingsQuery,
-) -> DomainResult<Vec<(String, String)>> {
-    deps.settings_repo.get_all().await
-}
-
-#[cfg(test)]
-#[path = "tests/get_settings.rs"]
-mod tests;

crates/application/src/admin/mod.rs

@@ -1,10 +1,6 @@
-pub mod activity_log;
 pub mod commands;
 pub mod deps;
-pub mod get_settings;
-pub mod queries;
 pub mod update_settings;
 
 pub use commands::UpdateSettingsCommand;
 pub use deps::AdminDeps;
-pub use queries::{GetActivityLogQuery, GetSettingsQuery};

crates/application/src/admin/queries.rs

@@ -1,5 +0,0 @@
-pub struct GetSettingsQuery;
-
-pub struct GetActivityLogQuery {
-    pub limit: u32,
-}

crates/application/src/admin/tests/get_settings.rs

@@ -1,46 +0,0 @@
-use std::sync::Arc;
-
-use domain::testing::{InMemoryActivityLog, InMemoryAppSettings};
-
-use crate::admin::commands::UpdateSettingsCommand;
-use crate::admin::deps::AdminDeps;
-use crate::admin::queries::GetSettingsQuery;
-use crate::admin::{get_settings, update_settings};
-
-fn make_deps() -> AdminDeps {
-    AdminDeps {
-        settings_repo: Arc::new(InMemoryAppSettings::new()),
-        activity_query: Arc::new(InMemoryActivityLog::new()),
-    }
-}
-
-#[tokio::test]
-async fn get_empty_settings() {
-    let deps = make_deps();
-    let settings = get_settings::execute(&deps, GetSettingsQuery).await.unwrap();
-    assert!(settings.is_empty());
-}
-
-#[tokio::test]
-async fn get_returns_stored_settings() {
-    let deps = make_deps();
-
-    update_settings::execute(
-        &deps,
-        UpdateSettingsCommand {
-            settings: vec![
-                ("a".into(), "1".into()),
-                ("b".into(), "2".into()),
-            ],
-        },
-    )
-    .await
-    .unwrap();
-
-    let settings = get_settings::execute(&deps, GetSettingsQuery).await.unwrap();
-    assert_eq!(settings.len(), 2);
-
-    let keys: Vec<&str> = settings.iter().map(|(k, _)| k.as_str()).collect();
-    assert!(keys.contains(&"a"));
-    assert!(keys.contains(&"b"));
-}