fix(resources): wire missing created_by and updated_by

src/application/dtos/favorites_dto.rs

@@ -127,6 +127,11 @@ pub struct FavoriteResourceRow {
     /// folder rows. Routes into `FileDto::content_hash` and feeds
     /// `File::compute_etag` to populate `FileDto::etag`.
     pub blob_hash: Option<String>,
+    /// §14 provenance — who created the row. `None` when the creator
+    /// was deleted (FK `ON DELETE SET NULL`).
+    pub created_by: Option<Uuid>,
+    /// §14 provenance — who last touched the row.
+    pub updated_by: Option<Uuid>,
     /// `true` when `owner_id == requesting user_id`.
     pub is_owner: bool,
     pub favorited_at: DateTime<Utc>,

src/application/dtos/folder_dto.rs

@@ -219,6 +219,13 @@ pub struct FolderResourceRow {
     /// on the REST `/api/folders/{id}/resources` listing so API
     /// consumers can issue conditional requests against listed files.
     pub blob_hash: Option<String>,
+    /// §14 provenance — who created the row. `None` when the creator was
+    /// deleted (FK `ON DELETE SET NULL`). Populates
+    /// `FileDto::created_by` / `FolderDto::created_by` on the listing so
+    /// the UI can render the owner column without a follow-up query.
+    pub created_by: Option<Uuid>,
+    /// §14 provenance — who last touched the row.
+    pub updated_by: Option<Uuid>,
     // Pre-computed sort fields — returned by the SQL for cursor construction.
     /// `LOWER(name)` used by `name`/`type` sorts.
     pub sort_str: String,

src/application/dtos/recent_dto.rs

@@ -112,6 +112,16 @@ pub struct RecentResourceRow {
     /// folder rows. Feeds `File::compute_etag` so this listing's
     /// `etag` matches GET/HEAD/PROPFIND for the same file.
     pub blob_hash: Option<String>,
+    /// §14 provenance — who created the row. `None` when the creator
+    /// was deleted (FK `ON DELETE SET NULL`). Powers the owner column
+    /// on the `/recent` UI (aligned with `/files` and `/favorites`
+    /// for cross-surface consistency, rather than the finer-grained
+    /// but noisier "who touched this last" signal).
+    pub created_by: Option<Uuid>,
+    /// §14 provenance — who last touched the row. Not currently
+    /// consumed by the UI but surfaced for API parity with the other
+    /// listing endpoints.
+    pub updated_by: Option<Uuid>,
     /// `true` when `owner_id == requesting user_id`.
     pub is_owner: bool,
     pub accessed_at: DateTime<Utc>,

src/application/dtos/trash_dto.rs

@@ -71,6 +71,12 @@ pub struct TrashResourceRow {
     /// same file (restorable trash items are conditional-request
     /// targets too).
     pub blob_hash: Option<String>,
+    /// §14 provenance — who created the row. `None` when the creator
+    /// was deleted (FK `ON DELETE SET NULL`).
+    pub created_by: Option<Uuid>,
+    /// §14 provenance — who last touched the row (includes the trash
+    /// action itself, which stamps `updated_by = caller_id`).
+    pub updated_by: Option<Uuid>,
     pub trashed_at: DateTime<Utc>,
     pub deletion_date: DateTime<Utc>,
     /// Original location path (for folders: `path`; for files: `parent.path || '/' || name`).

src/application/services/trash_service.rs

@@ -888,9 +888,8 @@ fn row_to_item_dto(row: TrashResourceRow) -> TrashResourceItemDto {
             icon_class: intern_display("fas fa-folder"),
             icon_special_class: intern_display("folder-icon"),
             category: intern_display("Folder"),
-            // §14 provenance not selected by the trash listing query.
-            created_by: None,
-            updated_by: None,
+            created_by: row.created_by,
+            updated_by: row.updated_by,
         };
         TrashResourceItemDto {
             resource_type: ResourceTypeDto::Folder,
@@ -932,9 +931,8 @@ fn row_to_item_dto(row: TrashResourceRow) -> TrashResourceItemDto {
             sort_date: None,
             content_hash,
             etag,
-            // §14 provenance not selected by the trash listing query.
-            created_by: None,
-            updated_by: None,
+            created_by: row.created_by,
+            updated_by: row.updated_by,
         };
         TrashResourceItemDto {
             resource_type: ResourceTypeDto::File,