Remove useless code

diff --git a/AGENTS.md b/AGENTS.md
index ed7cc85..55f7432 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,5 +1,14 @@
 # Agent Instructions
 
+## Creating Migrations
+
+* Run `dotnet ef migrations add <migration-name>` to generate the migration.
+* Copy the attributes from the generated `.Designer.cs` file to the `.cs` migration file.
+* Remove the generated `.Designer.cs` file.
+* Remove the `Down()` method.
+* Do not use `migrationBuilder.IsNpgsql()`; assume PostgreSQL is used.
+* If a migration cannot be generated through `dotnet ef migrations`, add a migration file prefixed by date in the `Migrations` folder, for example `20260525115757_passkey.cs`, and use `migrationBuilder.Sql` to run raw SQL.
+
 ## Updating `Changelog.md`
 
 When asked to update or review the changelog, focus on user-visible changes and keep entries concise.
diff --git a/BTCPayServer.Data/Migrations/20231219031609_translationsmigration.cs b/BTCPayServer.Data/Migrations/20231219031609_translationsmigration.cs
index f8f752f..9d8f3e4 100644
--- a/BTCPayServer.Data/Migrations/20231219031609_translationsmigration.cs
+++ b/BTCPayServer.Data/Migrations/20231219031609_translationsmigration.cs
@@ -13,45 +13,42 @@ namespace BTCPayServer.Migrations
     {
         protected override void Up(MigrationBuilder migrationBuilder)
         {
-            if (migrationBuilder.IsNpgsql())
-            {
-                migrationBuilder.Sql("""
-CREATE TABLE lang_dictionaries (
-    dict_id TEXT PRIMARY KEY,
-    fallback TEXT DEFAULT NULL,
-    source TEXT DEFAULT NULL,
-    metadata JSONB DEFAULT NULL,
-    FOREIGN KEY (fallback) REFERENCES lang_dictionaries(dict_id) ON UPDATE CASCADE ON DELETE SET NULL
-);
-INSERT INTO lang_dictionaries(dict_id, source) VALUES ('English', 'Default');
+            migrationBuilder.Sql("""
+            CREATE TABLE lang_dictionaries (
+            dict_id TEXT PRIMARY KEY,
+            fallback TEXT DEFAULT NULL,
+            source TEXT DEFAULT NULL,
+            metadata JSONB DEFAULT NULL,
+            FOREIGN KEY (fallback) REFERENCES lang_dictionaries(dict_id) ON UPDATE CASCADE ON DELETE SET NULL
+            );
+            INSERT INTO lang_dictionaries(dict_id, source) VALUES ('English', 'Default');
 
-CREATE TABLE lang_translations (
-    dict_id TEXT NOT NULL,
-    sentence TEXT NOT NULL,
-    translation TEXT NOT NULL,
-    PRIMARY KEY (dict_id, sentence),
-    FOREIGN KEY (dict_id) REFERENCES lang_dictionaries(dict_id) ON UPDATE CASCADE ON DELETE CASCADE
-);
+            CREATE TABLE lang_translations (
+            dict_id TEXT NOT NULL,
+            sentence TEXT NOT NULL,
+            translation TEXT NOT NULL,
+            PRIMARY KEY (dict_id, sentence),
+            FOREIGN KEY (dict_id) REFERENCES lang_dictionaries(dict_id) ON UPDATE CASCADE ON DELETE CASCADE
+            );
 
-CREATE VIEW translations AS
-WITH RECURSIVE translations_with_paths AS (
-    SELECT d.dict_id, t.sentence, t.translation, ARRAY[d.dict_id] AS path FROM lang_translations t
-    INNER JOIN lang_dictionaries d USING (dict_id)
+            CREATE VIEW translations AS
+            WITH RECURSIVE translations_with_paths AS (
+            SELECT d.dict_id, t.sentence, t.translation, ARRAY[d.dict_id] AS path FROM lang_translations t
+            INNER JOIN lang_dictionaries d USING (dict_id)
 
-    UNION ALL
+            UNION ALL
 
-    SELECT d.dict_id, t.sentence, t.translation, d.dict_id || t.path FROM translations_with_paths t
-    INNER JOIN lang_dictionaries d ON d.fallback=t.dict_id
-),
-ranked_translations AS (
-    SELECT *,
-    ROW_NUMBER() OVER (PARTITION BY dict_id, sentence ORDER BY array_length(path, 1)) AS rn
-    FROM translations_with_paths
-)
-SELECT dict_id, sentence, translation, path FROM ranked_translations WHERE rn=1;
-COMMENT ON VIEW translations IS 'Compute the translation for all sentences for all dictionaries, taking into account fallbacks';
-""");
-            }
+            SELECT d.dict_id, t.sentence, t.translation, d.dict_id || t.path FROM translations_with_paths t
+            INNER JOIN lang_dictionaries d ON d.fallback=t.dict_id
+            ),
+            ranked_translations AS (
+            SELECT *,
+            ROW_NUMBER() OVER (PARTITION BY dict_id, sentence ORDER BY array_length(path, 1)) AS rn
+            FROM translations_with_paths
+            )
+            SELECT dict_id, sentence, translation, path FROM ranked_translations WHERE rn=1;
+            COMMENT ON VIEW translations IS 'Compute the translation for all sentences for all dictionaries, taking into account fallbacks';
+            """);
         }
 
         protected override void Down(MigrationBuilder migrationBuilder)
diff --git a/BTCPayServer.Data/Migrations/20260610081428_TranslationsFallbackRestrict.cs b/BTCPayServer.Data/Migrations/20260610081428_TranslationsFallbackRestrict.cs
index b0005f5..b16233d 100644
--- a/BTCPayServer.Data/Migrations/20260610081428_TranslationsFallbackRestrict.cs
+++ b/BTCPayServer.Data/Migrations/20260610081428_TranslationsFallbackRestrict.cs
@@ -15,25 +15,15 @@ namespace BTCPayServer.Migrations
         /// <inheritdoc />
         protected override void Up(MigrationBuilder migrationBuilder)
         {
-            if (migrationBuilder.IsNpgsql())
-            {
-                migrationBuilder.Sql(
-                    "ALTER TABLE lang_dictionaries DROP CONSTRAINT lang_dictionaries_fallback_fkey;");
-                migrationBuilder.Sql(
-                    "ALTER TABLE lang_dictionaries ADD CONSTRAINT lang_dictionaries_fallback_fkey FOREIGN KEY (fallback) REFERENCES lang_dictionaries(dict_id) ON UPDATE CASCADE ON DELETE RESTRICT;");
-            }
+            migrationBuilder.Sql(
+                "ALTER TABLE lang_dictionaries DROP CONSTRAINT lang_dictionaries_fallback_fkey;");
+            migrationBuilder.Sql(
+                "ALTER TABLE lang_dictionaries ADD CONSTRAINT lang_dictionaries_fallback_fkey FOREIGN KEY (fallback) REFERENCES lang_dictionaries(dict_id) ON UPDATE CASCADE ON DELETE RESTRICT;");
         }
 
         /// <inheritdoc />
         protected override void Down(MigrationBuilder migrationBuilder)
         {
-            if (migrationBuilder.IsNpgsql())
-            {
-                migrationBuilder.Sql(
-                    "ALTER TABLE lang_dictionaries DROP CONSTRAINT lang_dictionaries_fallback_fkey;");
-                migrationBuilder.Sql(
-                    "ALTER TABLE lang_dictionaries ADD CONSTRAINT lang_dictionaries_fallback_fkey FOREIGN KEY (fallback) REFERENCES lang_dictionaries(dict_id) ON UPDATE CASCADE ON DELETE SET NULL;");
-            }
         }
     }
 }