feat: add Table of Contents component to UI showcase

- Introduced `TableOfContents` component for improved navigation within the UI showcase.
- Implemented section extraction and intersection observer for active section tracking.
- Updated `UIShowcaseClient` to include the new component, enhancing user experience with a sticky navigation menu.
- Added IDs to sections for better linking and scrolling functionality.

src/components/ui-showcase/TableOfContents.tsx

@@ -0,0 +1,177 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+
+interface TableOfContentsProps {
+  className?: string;
+}
+
+interface Section {
+  id: string;
+  title: string;
+  level: number;
+}
+
+export function TableOfContents({ className = '' }: TableOfContentsProps) {
+  const [activeSection, setActiveSection] = useState<string>('');
+  const [sections, setSections] = useState<Section[]>([]);
+
+  useEffect(() => {
+    const extractSections = () => {
+      const sectionsWithId = document.querySelectorAll('section[id]');
+      const extractedSections: Section[] = Array.from(sectionsWithId).map((section) => {
+        const h2 = section.querySelector('h2');
+        return {
+          id: section.id,
+          title: h2?.textContent || section.id,
+          level: 2
+        };
+      });
+      
+      setSections(extractedSections);
+      return sectionsWithId;
+    };
+
+    // Fonction pour configurer l'intersection observer
+    const setupIntersectionObserver = (sections: NodeListOf<Element>) => {
+      const intersectionObserver = new IntersectionObserver(
+        (entries) => {
+          entries.forEach((entry) => {
+            if (entry.isIntersecting) {
+              setActiveSection(entry.target.id);
+            }
+          });
+        },
+        {
+          rootMargin: '-20% 0px -70% 0px',
+          threshold: 0
+        }
+      );
+
+      sections.forEach((section) => intersectionObserver.observe(section));
+      return intersectionObserver;
+    };
+
+    // Essayer immédiatement
+    let sectionsElements = extractSections();
+    let intersectionObserver: IntersectionObserver | null = null;
+
+    if (sectionsElements.length > 0) {
+      intersectionObserver = setupIntersectionObserver(sectionsElements);
+    } else {
+      // Utiliser MutationObserver pour surveiller les changements
+      const mutationObserver = new MutationObserver((mutations) => {
+        let shouldCheck = false;
+        
+        mutations.forEach((mutation) => {
+          if (mutation.type === 'childList') {
+            // Vérifier si des sections ont été ajoutées
+            mutation.addedNodes.forEach((node) => {
+              if (node.nodeType === Node.ELEMENT_NODE) {
+                const element = node as Element;
+                if (element.tagName === 'SECTION' || element.querySelector('section[id]')) {
+                  shouldCheck = true;
+                }
+              }
+            });
+          }
+        });
+
+        if (shouldCheck) {
+          sectionsElements = extractSections();
+          if (sectionsElements.length > 0 && !intersectionObserver) {
+            intersectionObserver = setupIntersectionObserver(sectionsElements);
+            mutationObserver.disconnect();
+          }
+        }
+      });
+
+      // Surveiller le contenu principal
+      const mainContent = document.querySelector('.lg\\:col-span-3') || document.body;
+      mutationObserver.observe(mainContent, {
+        childList: true,
+        subtree: true
+      });
+
+      // Fallback avec des tentatives périodiques
+      const intervalId = setInterval(() => {
+        sectionsElements = extractSections();
+        if (sectionsElements.length > 0) {
+          if (!intersectionObserver) {
+            intersectionObserver = setupIntersectionObserver(sectionsElements);
+          }
+          mutationObserver.disconnect();
+          clearInterval(intervalId);
+        }
+      }, 1000);
+
+      return () => {
+        mutationObserver.disconnect();
+        clearInterval(intervalId);
+        if (intersectionObserver) {
+          sectionsElements.forEach((section) => intersectionObserver!.unobserve(section));
+        }
+      };
+    }
+
+    return () => {
+      if (intersectionObserver) {
+        sectionsElements.forEach((section) => intersectionObserver!.unobserve(section));
+      }
+    };
+  }, []);
+
+  const scrollToSection = (sectionId: string) => {
+    const element = document.getElementById(sectionId);
+    if (element) {
+      element.scrollIntoView({
+        behavior: 'smooth',
+        block: 'start'
+      });
+    }
+  };
+
+  return (
+    <nav className={`sticky top-8 ${className}`}>
+      <div className="bg-[var(--card)] border border-[var(--border)] rounded-lg p-4 shadow-sm">
+        <h3 className="text-sm font-semibold text-[var(--foreground)] mb-3 flex items-center gap-2">
+          <span className="text-[var(--primary)]">📋</span>
+          Navigation
+        </h3>
+        
+        {sections.length === 0 ? (
+          <div className="text-sm text-[var(--muted-foreground)] py-2">
+            Chargement des sections...
+          </div>
+        ) : (
+          <>
+            <ul className="space-y-1">
+              {sections.map((section) => (
+                <li key={section.id}>
+                  <button
+                    onClick={() => scrollToSection(section.id)}
+                    className={`w-full text-left px-2 py-1 rounded text-sm transition-colors ${
+                      activeSection === section.id
+                        ? 'bg-[var(--primary)] text-[var(--primary-foreground)] font-medium'
+                        : 'text-[var(--muted-foreground)] hover:text-[var(--foreground)] hover:bg-[var(--card-hover)]'
+                    }`}
+                  >
+                    {section.title}
+                  </button>
+                </li>
+              ))}
+            </ul>
+            
+            {/* Indicateur de progression */}
+            <div className="mt-4 pt-3 border-t border-[var(--border)]">
+              <div className="flex items-center justify-between text-xs text-[var(--muted-foreground)]">
+                <span>Sections</span>
+                <span>{sections.length}</span>
+              </div>
+            </div>
+          </>
+        )}
+      </div>
+    </nav>
+  );
+}

src/components/ui-showcase/UIShowcaseClient.tsx

@@ -28,6 +28,7 @@ import { StatusBadge } from '@/components/ui/StatusBadge';
 import { KeyboardShortcutsModal } from '@/components/ui/KeyboardShortcutsModal';
 import { Modal } from '@/components/ui/Modal';
 import { FontSizeToggle } from '@/components/ui/FontSizeToggle';
+import { TableOfContents } from './TableOfContents';
 
 export function UIShowcaseClient() {
   const [inputValue, setInputValue] = useState('');
@@ -133,11 +134,19 @@ export function UIShowcaseClient() {
         subtitle="Démonstration de tous les composants UI disponibles"
       />
       
-      <div className="max-w-6xl mx-auto p-8 space-y-16">
+      <div className="max-w-7xl mx-auto p-8">
+        <div className="grid grid-cols-1 lg:grid-cols-4 gap-8">
+          {/* Menu de navigation */}
+          <div className="lg:col-span-1">
+            <TableOfContents />
+          </div>
+
+          {/* Contenu principal */}
+          <div className="lg:col-span-3 space-y-16">
 
 
         {/* Buttons Section */}
-        <section className="space-y-8">
+        <section id="buttons" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Buttons
           </h2>
@@ -176,7 +185,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Badges Section */}
-        <section className="space-y-8">
+        <section id="badges" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Badges
           </h2>
@@ -198,7 +207,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Alerts Section */}
-        <section className="space-y-8">
+        <section id="alerts" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Alerts
           </h2>
@@ -242,7 +251,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Inputs Section */}
-        <section className="space-y-8">
+        <section id="inputs" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Inputs
           </h2>
@@ -273,7 +282,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Cards Section */}
-        <section className="space-y-6">
+        <section id="cards" className="space-y-6">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-2">
             Cards
           </h2>
@@ -386,7 +395,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Interactive Demo */}
-        <section className="space-y-6">
+        <section id="interactive-demo" className="space-y-6">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-2">
             Démonstration Interactive
           </h2>
@@ -457,7 +466,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Dashboard Components Section */}
-        <section className="space-y-8">
+        <section id="dashboard-components" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Dashboard Components
           </h2>
@@ -810,7 +819,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Kanban Components Section */}
-        <section className="space-y-8">
+        <section id="kanban-components" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Kanban Components
           </h2>
@@ -1103,7 +1112,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Jira Dashboard Components Section */}
-        <section className="space-y-8">
+        <section id="jira-dashboard-components" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Jira Dashboard Components
           </h2>
@@ -1190,7 +1199,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Daily Components Section */}
-        <section className="space-y-8">
+        <section id="daily-components" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Daily Components
           </h2>
@@ -1335,7 +1344,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Weekly Manager Components Section */}
-        <section className="space-y-8">
+        <section id="weekly-manager-components" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Weekly Manager Components
           </h2>
@@ -1431,7 +1440,7 @@ export function UIShowcaseClient() {
         </section>
 
         {/* Additional UI Components Section */}
-        <section className="space-y-8">
+        <section id="additional-ui-components" className="space-y-8">
           <h2 className="text-2xl font-mono font-semibold text-[var(--foreground)] border-b border-[var(--border)] pb-3">
             Additional UI Components
           </h2>
@@ -1605,6 +1614,8 @@ export function UIShowcaseClient() {
               </p>
             </div>
           </div>
+        </div>
+      </div>
 
       {/* Modals */}
       <Modal