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/migration/src/lib.rs

@@ -45,6 +45,8 @@ mod m20260401_000034_add_source_markdown_to_posts;
 mod m20260401_000035_add_human_verification_modes_to_site_settings;
 mod m20260402_000036_create_worker_jobs;
 mod m20260402_000037_add_wechat_share_qr_setting_to_site_settings;
+mod m20260402_000038_add_music_enabled_to_site_settings;
+mod m20260402_000039_add_maintenance_mode_to_site_settings;
 pub struct Migrator;
 
 #[async_trait::async_trait]
@@ -94,6 +96,8 @@ impl MigratorTrait for Migrator {
             Box::new(m20260401_000035_add_human_verification_modes_to_site_settings::Migration),
             Box::new(m20260402_000036_create_worker_jobs::Migration),
             Box::new(m20260402_000037_add_wechat_share_qr_setting_to_site_settings::Migration),
+            Box::new(m20260402_000038_add_music_enabled_to_site_settings::Migration),
+            Box::new(m20260402_000039_add_maintenance_mode_to_site_settings::Migration),
             // inject-above (do not remove this comment)
         ]
     }