feat(EE): full-text search in attachments (#1502)

* feat(EE): fulltext search in attachments

* feat: global search
- search filters
- attachments search ui
- and more

* fix import

* fix import

* rename migration

* add GIN index

* fix table name

* sanitize

apps/server/src/database/migrations/20250901T184612-attachments-search.ts

@@ -0,0 +1,29 @@
+import { type Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('attachments')
+    .addColumn('text_content', 'text', (col) => col)
+    .addColumn('tsv', sql`tsvector`, (col) => col)
+    .execute();
+
+  await db.schema
+    .createIndex('attachments_tsv_idx')
+    .on('attachments')
+    .using('GIN')
+    .column('tsv')
+    .execute();
+}
+
+export async function down(db: Kysely<any>): Promise<void> {
+  await db.schema
+    .alterTable('attachments')
+    .dropIndex('attachments_tsv_idx')
+    .execute();
+
+  await db.schema
+    .alterTable('attachments')
+    .dropColumn('text_content')
+    .dropColumn('tsv')
+    .execute();
+}