fix: remove sqlx from API layer, read TTL from TranscodeManager, init local_files from DB on startup

k-tv-backend/api/src/routes/files.rs

@@ -256,17 +256,10 @@ async fn get_transcode_settings(
     State(state): State<AppState>,
     CurrentUser(_user): CurrentUser,
 ) -> Result<Json<TranscodeSettingsResponse>, ApiError> {
-    let pool = state.sqlite_pool.read().await.clone()
-        .ok_or_else(|| ApiError::not_implemented("sqlite not available"))?;
-
-    let (ttl,): (i64,) =
-        sqlx::query_as("SELECT cleanup_ttl_hours FROM transcode_settings WHERE id = 1")
-            .fetch_one(&pool)
-            .await
-            .map_err(|e| ApiError::internal(e.to_string()))?;
-
+    let tm = state.transcode_manager.read().await.clone()
+        .ok_or_else(|| ApiError::not_implemented("TRANSCODE_DIR not configured"))?;
     Ok(Json(TranscodeSettingsResponse {
-        cleanup_ttl_hours: ttl as u32,
+        cleanup_ttl_hours: tm.get_cleanup_ttl(),
     }))
 }