add ocr pipeline

backend/repository/resources.go

@@ -433,6 +433,29 @@ func (r *Resources) UpdateNameByID(resourceID, name string) error {
 	return nil
 }
 
+// UpdatePhysical refreshes an existing file row's physical metadata
+// (size_bytes / mime_type / extension) after a targeted re-upload — used so a
+// resource created metadata-only (outbox create_resource) receives its bytes
+// for server-side OCR. Absent / not owned → ErrNotFound. Never renames or moves.
+func (r *Resources) UpdatePhysical(ownerID, resourceID string, size int64, mimeType, extension *string) error {
+	result, err := r.DB.Exec(
+		`UPDATE resources SET size_bytes = $3, mime_type = $4, extension = $5, updated_at = NOW()
+		 WHERE resource_id = $1 AND user_id = $2 AND type = 'file' AND deleted_at IS NULL`,
+		resourceID, ownerID, size, mimeType, extension,
+	)
+	if err != nil {
+		return err
+	}
+	affected, err := result.RowsAffected()
+	if err != nil {
+		return err
+	}
+	if affected == 0 {
+		return ErrNotFound
+	}
+	return nil
+}
+
 // SyncDelete soft-deletes a resource; absence is NOT an error (idempotent
 // terminal state for the outbox).
 func (r *Resources) SyncDelete(ownerID, resourceID string) error {