add: developer panel

crates/core/src/model/stacks.rs

@@ -60,7 +60,7 @@ impl UserStack {
     pub fn new(name: String, owner: usize, users: Vec<usize>) -> Self {
         Self {
             id: Snowflake::new().to_string().parse::<usize>().unwrap(),
-            created: unix_epoch_timestamp() as usize,
+            created: unix_epoch_timestamp(),
             owner,
             name,
             users,