Refactor database error handling across repositories to use IntoDbResult for improved error management

- Updated PgNotificationRepository to utilize IntoDbResult for error handling in various methods.
- Refactored PgRemoteActorRepository to replace manual error mapping with IntoDbResult.
- Modified PgRemoteActorConnectionRepository to implement IntoDbResult for error handling.
- Adjusted PgTagRepository to use IntoDbResult for consistent error management.
- Introduced test_helpers module for seeding users and thoughts in tests.
- Enhanced PgThoughtRepository to leverage IntoDbResult for error handling.
- Updated PgTopFriendRepository to utilize IntoDbResult for error management.
- Refactored PgUserRepository to implement IntoDbResult for error handling.
- Added constants for pagination defaults in requests.
- Introduced MAX_TOP_FRIENDS constant for top friends validation.
- Refactored JWT expiration time to use a constant.
- Improved rate limiter configuration with constants for better readability.
- Added utility methods for FollowState and Visibility enums for string conversions.
- Introduced maximum length constants for Username, Email, and Content value objects.
- Cleaned up test modules by removing redundant code and utilizing a shared testing state.

crates/bootstrap/src/factory.rs

@@ -1,3 +1,5 @@
+const JWT_TTL_SECS: i64 = 86_400 * 30;
+
 use async_trait::async_trait;
 use sqlx::PgPool;
 use std::sync::Arc;
@@ -107,7 +109,7 @@ pub async fn build(cfg: &Config) -> Infrastructure {
         search: Arc::new(postgres_search::PgSearchRepository::new(pool.clone())),
         auth: Arc::new(auth::JwtAuthService::new(
             cfg.jwt_secret.clone(),
-            86400 * 30,
+            JWT_TTL_SECS,
         )),
         hasher: Arc::new(auth::Argon2PasswordHasher),
         events: event_publisher,

crates/bootstrap/src/main.rs

@@ -1,6 +1,9 @@
 mod config;
 mod factory;
 
+const MS_PER_MINUTE: u64 = 60_000;
+const RATE_LIMITER_CLEANUP_INTERVAL_SECS: u64 = 60;
+
 use std::net::SocketAddr;
 use std::sync::Arc;
 use tower_http::cors::{AllowOrigin, CorsLayer};
@@ -46,7 +49,7 @@ async fn main() {
 
         // per_millisecond sets the token replenishment interval.
         // rate_limit = max requests/minute => replenish every (60000 / rate_limit) ms.
-        let ms = (60_000u64).saturating_div(rate_limit as u64).max(1);
+        let ms = MS_PER_MINUTE.saturating_div(rate_limit as u64).max(1);
         let governor_conf = Arc::new(
             GovernorConfigBuilder::default()
                 .per_millisecond(ms)
@@ -58,7 +61,9 @@ async fn main() {
 
         let limiter = governor_conf.limiter().clone();
         tokio::spawn(async move {
-            let mut interval = tokio::time::interval(std::time::Duration::from_secs(60));
+            let mut interval = tokio::time::interval(std::time::Duration::from_secs(
+                RATE_LIMITER_CLEANUP_INTERVAL_SECS,
+            ));
             loop {
                 interval.tick().await;
                 limiter.retain_recent();