feat: add user profile management with update and retrieval endpoints, enhance database setup for testing

thoughts-backend/models/src/schemas/user.rs

@@ -1,3 +1,4 @@
+use common::DateTimeWithTimeZoneWrapper;
 use serde::Serialize;
 use utoipa::ToSchema;
 
@@ -7,6 +8,15 @@ use crate::domains::user;
 pub struct UserSchema {
     pub id: i32,
     pub username: String,
+    pub display_name: Option<String>,
+    pub bio: Option<String>,
+    pub avatar_url: Option<String>,
+    pub header_url: Option<String>,
+    pub custom_css: Option<String>,
+    // In a real implementation, you'd fetch and return this data.
+    // For now, we'll omit it from the schema to keep it simple.
+    // pub top_friends: Vec<String>,
+    pub joined_at: DateTimeWithTimeZoneWrapper,
 }
 
 impl From<user::Model> for UserSchema {
@@ -14,6 +24,12 @@ impl From<user::Model> for UserSchema {
         Self {
             id: user.id,
             username: user.username,
+            display_name: user.display_name,
+            bio: user.bio,
+            avatar_url: user.avatar_url,
+            header_url: user.header_url,
+            custom_css: user.custom_css,
+            joined_at: user.created_at.into(),
         }
     }
 }