Lots of untested changes

server/migrations/0001_users_table.sql

@@ -1,5 +1,5 @@
 CREATE TABLE IF NOT EXISTS users (
-    id SERIAL PRIMARY KEY,
+    id INTEGER PRIMARY KEY,
     username TEXT NOT NULL,
     password TEXT NOT NULL,
     created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,

server/migrations/0002_posts_table.sql

@@ -1,6 +1,6 @@
 CREATE TABLE IF NOT EXISTS posts (
-    id SERIAL PRIMARY KEY,
-    user_id SERIAL NOT NULL,
+    id INTEGER PRIMARY KEY NOT NULL,
+    user_id INTEGER NOT NULL,
     content TEXT NOT NULL,
     upvotes INT NOT NULL DEFAULT 0,
     downvotes INT NOT NULL DEFAULT 0,