Replace i32 with u32 for database columns

We never expect to return signed integers and so we shouldn't use
a signed type. I think this was a limitation of sqlx.

crates/collab/src/db/project.rs

@@ -8,7 +8,7 @@ pub struct Model {
     pub id: ProjectId,
     pub room_id: RoomId,
     pub host_user_id: UserId,
-    pub host_connection_id: i32,
+    pub host_connection_id: u32,
 }
 
 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]

crates/collab/src/db/project_collaborator.rs

@@ -7,7 +7,7 @@ pub struct Model {
     #[sea_orm(primary_key)]
     pub id: ProjectCollaboratorId,
     pub project_id: ProjectId,
-    pub connection_id: i32,
+    pub connection_id: u32,
     pub user_id: UserId,
     pub replica_id: ReplicaId,
     pub is_host: bool,

crates/collab/src/db/room_participant.rs

@@ -8,12 +8,12 @@ pub struct Model {
     pub id: RoomParticipantId,
     pub room_id: RoomId,
     pub user_id: UserId,
-    pub answering_connection_id: Option<i32>,
-    pub location_kind: Option<i32>,
+    pub answering_connection_id: Option<u32>,
+    pub location_kind: Option<u32>,
     pub location_project_id: Option<ProjectId>,
     pub initial_project_id: Option<ProjectId>,
     pub calling_user_id: UserId,
-    pub calling_connection_id: i32,
+    pub calling_connection_id: u32,
 }
 
 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]

crates/collab/src/db/tests.rs

@@ -430,7 +430,7 @@ async fn test_fuzzy_search_users() {
             false,
             NewUserParams {
                 github_login: github_login.into(),
-                github_user_id: i as i32,
+                github_user_id: i as u32,
                 invite_count: 0,
             },
         )

crates/collab/src/db/user.rs

@@ -8,11 +8,11 @@ pub struct Model {
     #[sea_orm(primary_key)]
     pub id: UserId,
     pub github_login: String,
-    pub github_user_id: Option<i32>,
+    pub github_user_id: Option<u32>,
     pub email_address: Option<String>,
     pub admin: bool,
     pub invite_code: Option<String>,
-    pub invite_count: i32,
+    pub invite_count: u32,
     pub inviter_id: Option<UserId>,
     pub connected_once: bool,
     pub metrics_id: Uuid,

crates/collab/src/db/worktree.rs

@@ -1,18 +1,17 @@
+use super::{ProjectId, WorktreeId};
 use sea_orm::entity::prelude::*;
 
-use super::ProjectId;
-
 #[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
 #[sea_orm(table_name = "worktrees")]
 pub struct Model {
     #[sea_orm(primary_key)]
-    pub id: i32,
+    pub id: WorktreeId,
     #[sea_orm(primary_key)]
     pub project_id: ProjectId,
     pub abs_path: String,
     pub root_name: String,
     pub visible: bool,
-    pub scan_id: i64,
+    pub scan_id: u32,
     pub is_complete: bool,
 }