feat: implement activity logging for user actions and create activities table

database/migrations/1782294801884_create_activities_table.ts

@@ -0,0 +1,25 @@
+import { BaseSchema } from '@adonisjs/lucid/schema';
+
+export default class extends BaseSchema {
+    protected tableName = 'activities';
+
+    async up() {
+        this.schema.createTable(this.tableName, (table) => {
+            table.increments('id');
+            table.string('type').notNullable().index(); // 'dataset.uploaded', 'auth.login'
+            table.integer('user_id').unsigned().nullable().references('id').inTable('accounts').onDelete('SET NULL');
+            table.string('subject_type').nullable(); // manual morph: model name
+            table.bigInteger('subject_id').unsigned().nullable();
+            table.string('description').notNullable();
+            table.json('properties').nullable();
+            table.timestamp('created_at');
+            table.timestamp('updated_at');
+            table.index(['subject_type', 'subject_id'])
+            table.index('created_at')
+        });
+    }
+
+    async down() {
+        this.schema.dropTable(this.tableName);
+    }
+}