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/adapters/postgres-search/Cargo.toml

@@ -5,6 +5,7 @@ edition = "2021"
 
 [dependencies]
 domain      = { workspace = true }
+postgres    = { workspace = true }
 sqlx        = { workspace = true }
 uuid        = { workspace = true }
 chrono      = { workspace = true }

crates/adapters/postgres-search/src/lib.rs

@@ -1,26 +1,17 @@
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 
-fn visibility_from_str(s: &str) -> domain::models::thought::Visibility {
-    use domain::models::thought::Visibility;
-    match s {
-        "followers" => Visibility::Followers,
-        "unlisted" => Visibility::Unlisted,
-        "direct" => Visibility::Direct,
-        _ => Visibility::Public,
-    }
-}
-
 use domain::{
     errors::DomainError,
     models::{
         feed::{FeedEntry, PageParams, Paginated},
-        thought::Thought,
+        thought::{Thought, Visibility},
         user::User,
     },
     ports::SearchPort,
     value_objects::{Content, Email, PasswordHash, ThoughtId, UserId, Username},
 };
+use postgres::user::{UserRow, USER_SELECT};
 use sqlx::PgPool;
 
 pub struct PgSearchRepository {
@@ -88,7 +79,7 @@ fn row_to_entry(r: FeedRow) -> FeedEntry {
         in_reply_to_id: r.in_reply_to_id.map(ThoughtId::from_uuid),
         in_reply_to_url: r.in_reply_to_url,
         ap_id: r.t_ap_id,
-        visibility: visibility_from_str(&r.visibility),
+        visibility: Visibility::from_db_str(&r.visibility),
         content_warning: r.content_warning,
         sensitive: r.sensitive,
         local: r.t_local,
@@ -122,49 +113,6 @@ fn row_to_entry(r: FeedRow) -> FeedEntry {
     }
 }
 
-#[derive(sqlx::FromRow)]
-struct UserRow {
-    id: uuid::Uuid,
-    username: String,
-    email: String,
-    password_hash: String,
-    display_name: Option<String>,
-    bio: Option<String>,
-    avatar_url: Option<String>,
-    header_url: Option<String>,
-    custom_css: Option<String>,
-    local: bool,
-    ap_id: Option<String>,
-    inbox_url: Option<String>,
-    created_at: DateTime<Utc>,
-    updated_at: DateTime<Utc>,
-}
-
-impl From<UserRow> for User {
-    fn from(r: UserRow) -> Self {
-        User {
-            id: UserId::from_uuid(r.id),
-            username: Username::from_trusted(r.username),
-            email: Email::from_trusted(r.email),
-            password_hash: PasswordHash(r.password_hash),
-            display_name: r.display_name,
-            bio: r.bio,
-            avatar_url: r.avatar_url,
-            header_url: r.header_url,
-            custom_css: r.custom_css,
-            local: r.local,
-            ap_id: r.ap_id,
-            inbox_url: r.inbox_url,
-            created_at: r.created_at,
-            updated_at: r.updated_at,
-        }
-    }
-}
-
-const USER_SELECT: &str =
-    "SELECT id,username,email,password_hash,display_name,bio,avatar_url,header_url,\
-     custom_css,local,ap_id,inbox_url,created_at,updated_at FROM users";
-
 #[async_trait]
 impl SearchPort for PgSearchRepository {
     async fn search_thoughts(