feat(diary): improve predefined activities UI and enhance socket event integration

- Updated UI components for managing predefined activities to enhance user experience and accessibility.
- Improved socket event integration for real-time updates related to predefined activities, ensuring seamless interaction with the diary service.
- Refactored related mappers to support new UI changes and maintain data consistency across the application.

backend/migrations/create_http_page_fetch_log.sql

@@ -0,0 +1,25 @@
+-- Migration: Create http_page_fetch_log table for logging HTTP page fetches (HTTV/click-TT etc.)
+-- Dient zum Verständnis der externen Seiten-Struktur und URL-Varianten je nach Verband/Saison
+
+CREATE TABLE IF NOT EXISTS http_page_fetch_log (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT NULL COMMENT 'Optional: User der den Aufruf ausgelöst hat',
+    fetch_type VARCHAR(64) NOT NULL COMMENT 'z.B. leaguePage, clubInfoDisplay, regionMeetingFilter',
+    base_domain VARCHAR(255) NOT NULL COMMENT 'z.B. httv.click-tt.de',
+    full_url TEXT NOT NULL COMMENT 'Vollständige aufgerufene URL',
+    association VARCHAR(64) NULL COMMENT 'Verband (z.B. HeTTV, RTTV)',
+    championship VARCHAR(128) NULL COMMENT 'Championship-Parameter (z.B. HTTV 25/26)',
+    club_id_param VARCHAR(64) NULL COMMENT 'Club-ID falls clubInfoDisplay',
+    http_status INT NULL COMMENT 'HTTP-Status der Response',
+    success BOOLEAN NOT NULL DEFAULT FALSE,
+    response_snippet TEXT NULL COMMENT 'Gekürzter Response-Anfang (max 2000 Zeichen) zur Strukturanalyse',
+    content_type VARCHAR(128) NULL COMMENT 'Content-Type der Response',
+    error_message TEXT NULL,
+    execution_time_ms INT NULL COMMENT 'Laufzeit in Millisekunden',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+
+    INDEX idx_created_at (created_at),
+    INDEX idx_base_domain_fetch_type (base_domain, fetch_type),
+    INDEX idx_association_championship (association, championship),
+    FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE SET NULL ON UPDATE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;