Adding gnommoeditor in the current version

backend/migrations/019_add_attribution_to_shared_assets.cjs

@@ -0,0 +1,15 @@
+// Attribution metadata for the shared asset library.
+// Covers provenance (where it came from), legal (license, rights holder),
+// and internal tracking (who uploaded it).
+exports.up = (pgm) => {
+  pgm.addColumns('shared_assets', {
+    license:          { type: 'varchar(200)' },    // e.g. "Pexels License", "CC BY 4.0", "CC0 1.0"
+    copyright_holder: { type: 'varchar(500)' },    // photographer / creator name
+    source_url:       { type: 'varchar(1000)' },   // page URL where asset was obtained
+    uploader:         { type: 'varchar(200)' },    // who added it to this system
+  });
+};
+
+exports.down = (pgm) => {
+  pgm.dropColumns('shared_assets', ['license', 'copyright_holder', 'source_url', 'uploader']);
+};