feat: update tag and timeline share panel copy for clarity and conciseness

style: enhance global CSS for better responsiveness of terminal chips and navigation pills

test: remove inline subscription test and add maintenance mode access code test

feat: implement media library picker dialog for selecting images from the media library

feat: add media URL controls for uploading and managing media assets

feat: add migration for music_enabled and maintenance_mode settings in site settings

feat: implement maintenance mode functionality with access control

feat: create maintenance page with access code input and error handling

chore: add TypeScript declaration for QR code module

backend/src/app.rs

@@ -1,18 +1,18 @@
 use async_trait::async_trait;
 use axum::{
-    http::{header, HeaderName, Method},
     Router as AxumRouter,
+    http::{HeaderName, Method, header},
 };
 use loco_rs::{
+    Result,
     app::{AppContext, Hooks, Initializer},
     bgworker::{BackgroundWorker, Queue},
-    boot::{create_app, BootResult, StartMode},
+    boot::{BootResult, StartMode, create_app},
     config::Config,
     controller::AppRoutes,
     db::{self, truncate_table},
     environment::Environment,
     task::Tasks,
-    Result,
 };
 use migration::Migrator;
 use sea_orm::{
@@ -99,7 +99,9 @@ impl Hooks for App {
     }
 
     async fn initializers(_ctx: &AppContext) -> Result<Vec<Box<dyn Initializer>>> {
-        Ok(vec![Box::new(initializers::content_sync::ContentSyncInitializer)])
+        Ok(vec![Box::new(
+            initializers::content_sync::ContentSyncInitializer,
+        )])
     }
 
     fn routes(_ctx: &AppContext) -> AppRoutes {
@@ -152,7 +154,9 @@ impl Hooks for App {
     }
     async fn connect_workers(ctx: &AppContext, queue: &Queue) -> Result<()> {
         queue.register(DownloadWorker::build(ctx)).await?;
-        queue.register(NotificationDeliveryWorker::build(ctx)).await?;
+        queue
+            .register(NotificationDeliveryWorker::build(ctx))
+            .await?;
         Ok(())
     }
 
@@ -334,8 +338,7 @@ impl Hooks for App {
                     let comment_verification_mode = settings["comment_verification_mode"]
                         .as_str()
                         .map(ToString::to_string);
-                    let subscription_verification_mode = settings
-                        ["subscription_verification_mode"]
+                    let subscription_verification_mode = settings["subscription_verification_mode"]
                         .as_str()
                         .map(ToString::to_string);
                     let comment_turnstile_enabled = settings["comment_turnstile_enabled"]
@@ -343,8 +346,7 @@ impl Hooks for App {
                         .or(comment_verification_mode
                             .as_deref()
                             .map(|value| value.eq_ignore_ascii_case("turnstile")));
-                    let subscription_turnstile_enabled = settings
-                        ["subscription_turnstile_enabled"]
+                    let subscription_turnstile_enabled = settings["subscription_turnstile_enabled"]
                         .as_bool()
                         .or(subscription_verification_mode
                             .as_deref()
@@ -381,6 +383,20 @@ impl Hooks for App {
                         })
                         .filter(|items| !items.is_empty())
                         .map(serde_json::Value::Array);
+                    let music_enabled = settings["music_enabled"].as_bool().or(Some(true));
+                    let maintenance_mode_enabled = settings["maintenance_mode_enabled"]
+                        .as_bool()
+                        .or(Some(false));
+                    let maintenance_access_code = settings["maintenance_access_code"]
+                        .as_str()
+                        .and_then(|value| {
+                            let trimmed = value.trim();
+                            if trimmed.is_empty() {
+                                None
+                            } else {
+                                Some(trimmed.to_string())
+                            }
+                        });
 
                     let item = site_settings::ActiveModel {
                         id: Set(settings["id"].as_i64().unwrap_or(1) as i32),
@@ -422,6 +438,9 @@ impl Hooks for App {
                         location: Set(settings["location"].as_str().map(ToString::to_string)),
                         tech_stack: Set(tech_stack),
                         music_playlist: Set(music_playlist),
+                        music_enabled: Set(music_enabled),
+                        maintenance_mode_enabled: Set(maintenance_mode_enabled),
+                        maintenance_access_code: Set(maintenance_access_code),
                         ai_enabled: Set(settings["ai_enabled"].as_bool()),
                         paragraph_comments_enabled: Set(settings["paragraph_comments_enabled"]
                             .as_bool()