Refactor handlers and OpenAPI documentation for improved readability and consistency

- Reorganized imports in health, notifications, social, thoughts, and users handlers for clarity.
- Updated function signatures in handlers to improve readability by aligning parameters.
- Enhanced JSON response formatting in notifications and thoughts handlers.
- Improved error handling in user-related functions.
- Refactored OpenAPI documentation to maintain consistent formatting and structure.
- Cleaned up unnecessary code and comments across various files.
- Ensured consistent use of `Arc` for shared state in AppState and WorkerHandlers.

crates/domain/src/models/social.rs

@@ -1,5 +1,5 @@
+use crate::value_objects::{BoostId, LikeId, ThoughtId, UserId};
 use chrono::{DateTime, Utc};
-use crate::value_objects::{UserId, ThoughtId, LikeId, BoostId};
 
 #[derive(Debug, Clone)]
 pub struct Like {
@@ -20,13 +20,25 @@ pub struct Boost {
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
-pub enum FollowState { Pending, Accepted, Rejected }
+pub enum FollowState {
+    Pending,
+    Accepted,
+    Rejected,
+}
 impl FollowState {
     pub fn from_str(s: &str) -> Self {
-        match s { "pending" => Self::Pending, "rejected" => Self::Rejected, _ => Self::Accepted }
+        match s {
+            "pending" => Self::Pending,
+            "rejected" => Self::Rejected,
+            _ => Self::Accepted,
+        }
     }
     pub fn as_str(&self) -> &str {
-        match self { Self::Pending => "pending", Self::Accepted => "accepted", Self::Rejected => "rejected" }
+        match self {
+            Self::Pending => "pending",
+            Self::Accepted => "accepted",
+            Self::Rejected => "rejected",
+        }
     }
 }