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/notify/subscriptions.rs

@@ -9,7 +9,7 @@ use uuid::Uuid;
 
 use super::util::clamp_limit_offset;
 
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, Deserialize, Serialize, utoipa::ToSchema)]
 pub struct CreateSubscriptionParams {
     pub workspace_id: Option<Uuid>,
     pub repo_id: Option<Uuid>,
@@ -20,7 +20,7 @@ pub struct CreateSubscriptionParams {
     pub level: SubscriptionLevel,
 }
 
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, Deserialize, Serialize, utoipa::ToSchema)]
 pub struct UpdateSubscriptionParams {
     pub event_types: Option<Vec<EventType>>,
     pub channels: Option<Vec<String>>,
@@ -89,10 +89,12 @@ impl NotificationService {
         let id = Uuid::now_v7();
         let now = Utc::now();
 
-        sqlx::query(
+        sqlx::query_as::<_, NotificationSubscription>(
             "INSERT INTO notification_subscription \
              (id, user_id, workspace_id, repo_id, target_type, target_id, event_types, channels, level, muted, muted_until, created_at, updated_at) \
-             VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, false, NULL, $10, $10)",
+             VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, false, NULL, $10, $10) \
+             RETURNING id, user_id, workspace_id, repo_id, target_type, target_id, event_types, \
+             channels, level, muted, muted_until, created_at, updated_at",
         )
         .bind(id)
         .bind(user_id)
@@ -104,15 +106,9 @@ impl NotificationService {
         .bind(&params.channels)
         .bind(params.level.as_str())
         .bind(now)
-        .execute(self.ctx.db.writer())
+        .fetch_one(self.ctx.db.writer())
         .await
-        .map_err(AppError::Database)?;
-
-        NotificationSubscription::find_by_id(self.ctx.db.reader(), id, user_id)
-            .await?
-            .ok_or(AppError::InternalServerError(
-                "failed to fetch created subscription".into(),
-            ))
+        .map_err(AppError::Database)
     }
 
     pub async fn update_subscription(