Füge Unterstützung für IP-Sperre und verbessere die Anmeldefunktionalität hinzu; aktualisiere .gitignore, Dockerfile und Datenbankschema

db/init/001_schema.sql

@@ -22,6 +22,7 @@ CREATE TABLE access_tokens (
     uuid CHAR(36) NOT NULL UNIQUE,
     expires_at DATETIME NULL,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    notes TEXT NULL,
     FOREIGN KEY (identity_id)
         REFERENCES identities(id)
         ON DELETE CASCADE
@@ -53,3 +54,13 @@ CREATE TABLE files (
         REFERENCES access_tokens(id)
         ON DELETE SET NULL
 ) ENGINE=InnoDB;
+
+CREATE TABLE admin_login_attempts (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    ip_address VARCHAR(45) NOT NULL,
+    attempts INT NOT NULL DEFAULT 1,
+    locked_until DATETIME NULL,
+    last_attempt TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY (ip_address)
+);
+