added features and fixes

cmd/migrate/main.go

@@ -103,6 +103,7 @@ CREATE TABLE IF NOT EXISTS messages (
 	author_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 	content TEXT NOT NULL,
 	edited_at TIMESTAMPTZ,
+	pinned BOOLEAN NOT NULL DEFAULT FALSE,
 	created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
 );
 
@@ -126,6 +127,8 @@ CREATE TABLE IF NOT EXISTS member_roles (
 CREATE INDEX IF NOT EXISTS idx_messages_channel_created ON messages(channel_id, created_at DESC);
 CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions(token);
 CREATE INDEX IF NOT EXISTS idx_members_server_user ON members(server_id, user_id);
+
+ALTER TABLE messages ADD COLUMN IF NOT EXISTS pinned BOOLEAN NOT NULL DEFAULT FALSE;
 `
 
 const downSQL = `