structural refactor and codebase improvements

crates/application/src/import/deps.rs

@@ -29,3 +29,35 @@ pub struct SaveProfileDeps {
     pub import_session: Arc<dyn ImportSessionRepository>,
     pub import_profile: Arc<dyn ImportProfileRepository>,
 }
+
+pub struct GetMappingStageDeps {
+    pub import_session: Arc<dyn ImportSessionRepository>,
+}
+
+pub struct GetPreviewStageDeps {
+    pub import_session: Arc<dyn ImportSessionRepository>,
+}
+
+pub struct GetSessionStateDeps {
+    pub import_session: Arc<dyn ImportSessionRepository>,
+}
+
+pub struct DeleteImportProfileDeps {
+    pub import_profile: Arc<dyn ImportProfileRepository>,
+}
+
+pub struct ListImportProfilesDeps {
+    pub import_profile: Arc<dyn ImportProfileRepository>,
+}
+
+/// Backs `apply_profile_and_map`, which internally drives `apply_profile::execute`
+/// then `apply_mapping::execute` — these fields are exactly the union of
+/// `ApplyProfileDeps` and `ApplyMappingDeps`'s fields, cloned once here and used to
+/// build each nested deps struct inline at the call site (see that file's doc
+/// comment for why: no use-case signature changes, per this task's constraints).
+pub struct ApplyProfileAndMapDeps {
+    pub import_profile: Arc<dyn ImportProfileRepository>,
+    pub import_session: Arc<dyn ImportSessionRepository>,
+    pub document_parser: Arc<dyn DocumentParser>,
+    pub movie_query: Arc<dyn MovieQuery>,
+}