feat(service): expand service layer with new domain operations

- Add IM service modules: audit, channel roles, custom emojis, forum
  tags, integrations, invitations, repo links, slash commands, stages,
  voice, webhooks
- Add PR service modules: review requests, templates
- Add repo service modules: contributors, release assets, git extras
  (archive, branch rename, commit extras, diff/merge, tag, tree)
- Add user service: social (follow/block)
- Add internal auth service
- Update existing service modules with expanded functionality
- Remove deleted IM modules: articles, delivery trace, drafts,
  follows, messages, polls, presence, reactions, threads

service/workspace/billing.rs

@@ -7,7 +7,7 @@ use crate::models::workspaces::{Workspace, WorkspaceBilling};
 use crate::service::WorkspaceService;
 use crate::session::Session;
 
-use super::util::merge_optional_text;
+use super::util::{merge_optional_text, set_local_user_id};
 
 #[derive(Deserialize, Serialize, Clone, Debug, utoipa::ToSchema)]
 pub struct UpdateBillingParams {
@@ -51,8 +51,7 @@ impl WorkspaceService {
             .begin()
             .await
             .map_err(|_| AppError::TxnError)?;
-        sqlx::query("SET LOCAL app.current_user_id = $1")
-            .bind(user_uid)
+        sqlx::query(set_local_user_id(user_uid))
             .execute(&mut *txn)
             .await
             .map_err(AppError::Database)?;