refactor: ♻️ Store instance federation protocol in database, refactor fetcher

drizzle/migrations/0028_unique_fat_cobra.sql

@@ -0,0 +1,2 @@
+ALTER TABLE "Challenges" ALTER COLUMN "expires_at" SET NOT NULL;--> statement-breakpoint
+ALTER TABLE "Instances" ADD COLUMN "protocol" text DEFAULT 'lysand' NOT NULL;

drizzle/migrations/meta/_journal.json

@@ -197,6 +197,13 @@
             "when": 1718327596823,
             "tag": "0027_peaceful_whistler",
             "breakpoints": true
+        },
+        {
+            "idx": 28,
+            "version": "7",
+            "when": 1719726234826,
+            "tag": "0028_unique_fat_cobra",
+            "breakpoints": true
         }
     ]
 }

drizzle/schema.ts

@@ -348,6 +348,10 @@ export const Instances = pgTable("Instances", {
     disableAutomoderation: boolean("disable_automoderation")
         .default(false)
         .notNull(),
+    protocol: text("protocol")
+        .notNull()
+        .$type<"lysand" | "activitypub">()
+        .default("lysand"),
 });
 
 export const OpenIdAccounts = pgTable("OpenIdAccounts", {