Add API tokens management, docs & UI

Introduce full API token support: add a Prisma migration to create api_tokens table and indexes; add types, constants and a generateApiToken utility (hashed token + prefix). Update admin and user token routes to use the generator, enforce per-user active token caps, and integrate rate-limit checks. Add an interactive API docs page with TokenInput, EndpointCard and ResponseViewer components, plus a protected page route. Improve confirmation UX with an accessible ConfirmDialog (focus trap, Escape to close, animations) and wire confirm flows into admin/profile token sections; also update ConfirmModal to accept node messages. Add dialog CSS animations and enhance clipboard error handling. Update related middleware, utils and tests to reflect changes.

src/app/admin/components/ConfirmDialog.tsx

@@ -2,12 +2,13 @@
  * Component: Confirm Dialog
  * Documentation: documentation/frontend/components.md
  *
- * Reusable confirmation dialog for destructive actions
+ * Reusable confirmation dialog for destructive actions.
+ * Features: backdrop blur, smooth enter animation, Escape to close, focus trap, ARIA.
  */
 
 'use client';
 
-import { Fragment } from 'react';
+import React, { useEffect, useRef } from 'react';
 
 export interface ConfirmDialogProps {
   isOpen: boolean;
@@ -30,99 +31,177 @@ export function ConfirmDialog({
   onConfirm,
   onCancel,
 }: ConfirmDialogProps) {
+  const cancelRef = useRef<HTMLButtonElement>(null);
+  const confirmRef = useRef<HTMLButtonElement>(null);
+  const dialogRef = useRef<HTMLDivElement>(null);
+
+  // Focus the cancel button on open (safer default for destructive dialogs)
+  useEffect(() => {
+    if (isOpen) {
+      // Small delay to let animation start before stealing focus
+      const t = setTimeout(() => cancelRef.current?.focus(), 50);
+      return () => clearTimeout(t);
+    }
+  }, [isOpen]);
+
+  // Escape to close + focus trap
+  useEffect(() => {
+    if (!isOpen) return;
+
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') {
+        e.preventDefault();
+        onCancel();
+        return;
+      }
+
+      // Focus trap: tab cycles only within dialog
+      if (e.key === 'Tab') {
+        const focusable = dialogRef.current?.querySelectorAll<HTMLElement>(
+          'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
+        );
+        if (!focusable || focusable.length === 0) return;
+
+        const first = focusable[0];
+        const last = focusable[focusable.length - 1];
+
+        if (e.shiftKey) {
+          if (document.activeElement === first) {
+            e.preventDefault();
+            last.focus();
+          }
+        } else {
+          if (document.activeElement === last) {
+            e.preventDefault();
+            first.focus();
+          }
+        }
+      }
+    };
+
+    document.addEventListener('keydown', handleKeyDown);
+    return () => document.removeEventListener('keydown', handleKeyDown);
+  }, [isOpen, onCancel]);
+
+  // Prevent body scroll while open
+  useEffect(() => {
+    if (isOpen) {
+      document.body.style.overflow = 'hidden';
+      return () => { document.body.style.overflow = ''; };
+    }
+  }, [isOpen]);
+
   if (!isOpen) return null;
 
-  const confirmButtonClasses =
-    confirmVariant === 'danger'
-      ? 'bg-red-600 hover:bg-red-700 text-white'
-      : 'bg-blue-600 hover:bg-blue-700 text-white';
+  const isDestructive = confirmVariant === 'danger';
 
   return (
-    <div className="fixed inset-0 z-50 overflow-y-auto">
+    <div
+      role="dialog"
+      aria-modal="true"
+      aria-labelledby="confirm-dialog-title"
+      aria-describedby="confirm-dialog-desc"
+      className="fixed inset-0 z-50 flex items-center justify-center p-4"
+    >
       {/* Backdrop */}
       <div
-        className="fixed inset-0 bg-black bg-opacity-50 transition-opacity"
+        className="animate-dialog-backdrop fixed inset-0 bg-black/40 backdrop-blur-sm"
         onClick={onCancel}
         aria-hidden="true"
       />
 
-      {/* Dialog */}
-      <div className="flex min-h-full items-center justify-center p-4 text-center sm:p-0">
-        <div className="relative transform overflow-hidden rounded-lg bg-white dark:bg-gray-800 text-left shadow-xl transition-all sm:my-8 sm:w-full sm:max-w-lg">
-          <div className="bg-white dark:bg-gray-800 px-4 pb-4 pt-5 sm:p-6 sm:pb-4">
-            <div className="sm:flex sm:items-start">
-              {/* Icon */}
-              <div
-                className={`mx-auto flex h-12 w-12 flex-shrink-0 items-center justify-center rounded-full ${
-                  confirmVariant === 'danger'
-                    ? 'bg-red-100 dark:bg-red-900'
-                    : 'bg-blue-100 dark:bg-blue-900'
-                } sm:mx-0 sm:h-10 sm:w-10`}
-              >
+      {/* Panel */}
+      <div
+        ref={dialogRef}
+        className="animate-dialog-panel relative w-full max-w-sm rounded-2xl overflow-hidden bg-white dark:bg-gray-900 shadow-2xl ring-1 ring-black/10 dark:ring-white/10"
+      >
+        {/* Header */}
+        <div className="px-6 pt-6 pb-4">
+          <div className="flex items-start gap-4">
+            {/* Icon well */}
+            <div className={`flex-shrink-0 flex items-center justify-center w-10 h-10 rounded-full ${
+              isDestructive
+                ? 'bg-red-50 dark:bg-red-500/10'
+                : 'bg-blue-50 dark:bg-blue-500/10'
+            }`}>
+              {isDestructive ? (
                 <svg
-                  className={`h-6 w-6 ${
-                    confirmVariant === 'danger'
-                      ? 'text-red-600 dark:text-red-400'
-                      : 'text-blue-600 dark:text-blue-400'
-                  }`}
+                  className="w-5 h-5 text-red-500 dark:text-red-400"
                   fill="none"
                   viewBox="0 0 24 24"
-                  strokeWidth="1.5"
+                  strokeWidth="1.75"
                   stroke="currentColor"
+                  aria-hidden="true"
                 >
-                  {confirmVariant === 'danger' ? (
-                    <path
-                      strokeLinecap="round"
-                      strokeLinejoin="round"
-                      d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126zM12 15.75h.007v.008H12v-.008z"
-                    />
-                  ) : (
-                    <path
-                      strokeLinecap="round"
-                      strokeLinejoin="round"
-                      d="M9.879 7.519c1.171-1.025 3.071-1.025 4.242 0 1.172 1.025 1.172 2.687 0 3.712-.203.179-.43.326-.67.442-.745.361-1.45.999-1.45 1.827v.75M21 12a9 9 0 11-18 0 9 9 0 0118 0zm-9 5.25h.008v.008H12v-.008z"
-                    />
-                  )}
+                  <path
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126zM12 15.75h.007v.008H12v-.008z"
+                  />
                 </svg>
-              </div>
+              ) : (
+                <svg
+                  className="w-5 h-5 text-blue-500 dark:text-blue-400"
+                  fill="none"
+                  viewBox="0 0 24 24"
+                  strokeWidth="1.75"
+                  stroke="currentColor"
+                  aria-hidden="true"
+                >
+                  <path
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                    d="M9.879 7.519c1.171-1.025 3.071-1.025 4.242 0 1.172 1.025 1.172 2.687 0 3.712-.203.179-.43.326-.67.442-.745.361-1.45.999-1.45 1.827v.75M21 12a9 9 0 11-18 0 9 9 0 0118 0zm-9 5.25h.008v.008H12v-.008z"
+                  />
+                </svg>
+              )}
+            </div>
 
-              {/* Content */}
-              <div className="mt-3 text-center sm:ml-4 sm:mt-0 sm:text-left flex-1">
-                <h3 className="text-lg font-semibold leading-6 text-gray-900 dark:text-gray-100">
-                  {title}
-                </h3>
-                <div className="mt-2">
-                  {typeof message === 'string' ? (
-                    <p className="text-sm text-gray-500 dark:text-gray-400 whitespace-pre-line">
-                      {message}
-                    </p>
-                  ) : (
-                    <div className="text-sm text-gray-500 dark:text-gray-400">
-                      {message}
-                    </div>
-                  )}
-                </div>
+            {/* Text */}
+            <div className="flex-1 min-w-0 pt-0.5">
+              <h3
+                id="confirm-dialog-title"
+                className="text-base font-semibold leading-6 text-gray-900 dark:text-gray-50"
+              >
+                {title}
+              </h3>
+              <div id="confirm-dialog-desc" className="mt-1.5">
+                {typeof message === 'string' ? (
+                  <p className="text-sm text-gray-500 dark:text-gray-400 leading-relaxed">
+                    {message}
+                  </p>
+                ) : (
+                  <div className="text-sm text-gray-500 dark:text-gray-400 leading-relaxed">
+                    {message}
+                  </div>
+                )}
               </div>
             </div>
           </div>
+        </div>
 
-          {/* Actions */}
-          <div className="bg-gray-50 dark:bg-gray-900 px-4 py-3 sm:flex sm:flex-row-reverse sm:px-6 gap-2">
-            <button
-              type="button"
-              onClick={onConfirm}
-              className={`inline-flex w-full justify-center rounded-lg px-4 py-2 text-sm font-semibold shadow-sm sm:w-auto transition-colors ${confirmButtonClasses}`}
-            >
-              {confirmLabel}
-            </button>
-            <button
-              type="button"
-              onClick={onCancel}
-              className="mt-3 inline-flex w-full justify-center rounded-lg bg-white dark:bg-gray-700 px-4 py-2 text-sm font-semibold text-gray-900 dark:text-gray-100 shadow-sm ring-1 ring-inset ring-gray-300 dark:ring-gray-600 hover:bg-gray-50 dark:hover:bg-gray-600 sm:mt-0 sm:w-auto transition-colors"
-            >
-              {cancelLabel}
-            </button>
-          </div>
+        {/* Action bar */}
+        <div className="flex items-center justify-end gap-2 px-6 py-4 bg-gray-50/80 dark:bg-white/[0.03] border-t border-gray-100 dark:border-white/[0.06]">
+          <button
+            ref={cancelRef}
+            type="button"
+            onClick={onCancel}
+            className="px-4 py-2 text-sm font-medium rounded-xl text-gray-700 dark:text-gray-300 bg-white dark:bg-white/[0.06] hover:bg-gray-100 dark:hover:bg-white/[0.1] border border-gray-200 dark:border-white/[0.1] transition-all duration-150 focus:outline-none focus-visible:ring-2 focus-visible:ring-gray-400 focus-visible:ring-offset-2 dark:focus-visible:ring-offset-gray-900"
+          >
+            {cancelLabel}
+          </button>
+          <button
+            ref={confirmRef}
+            type="button"
+            onClick={onConfirm}
+            className={`px-4 py-2 text-sm font-medium rounded-xl text-white transition-all duration-150 focus:outline-none focus-visible:ring-2 focus-visible:ring-offset-2 dark:focus-visible:ring-offset-gray-900 active:scale-[0.97] ${
+              isDestructive
+                ? 'bg-red-600 hover:bg-red-700 focus-visible:ring-red-500'
+                : 'bg-blue-600 hover:bg-blue-700 focus-visible:ring-blue-500'
+            }`}
+          >
+            {confirmLabel}
+          </button>
         </div>
       </div>
     </div>