feat(nav): palette en icône près du titre, sections accordéon (retour #16)

Le bouton Recherche & commandes devient une icône 🔍 seule à
droite du titre (sous le logo en rail replié). Les groupes
deviennent des accordéons: chevron animé, transition douce,
sections fermées mémorisées (appliquées avant le rendu), section
de la page courante toujours ouverte; rail replié = icônes.

app/templates/_header.html

@@ -12,51 +12,62 @@
         if (localStorage.getItem('kanbante-sidebar') === 'collapsed') {
             document.body.classList.add('sidebar-collapsed');
         }
+        JSON.parse(localStorage.getItem('kanbante-nav-closed') || '[]')
+            .forEach(function (k) {
+                document.body.classList.add('nav-closed-' + k);
+            });
     } catch (e) { /* stockage indisponible : état par défaut */ }
 </script>
 {% set nav_groups = [
-    ("Principal", [
+    ("principal", "Principal", [
         ("home", "/", "🏠", "Projets"),
         ("focus", "/focus", "🎯", "Focus"),
         ("today", "/today", "🌅", "Aujourd'hui"),
         ("my", "/my", "👤", "Mes issues"),
     ]),
-    ("Rituels", [
+    ("rituels", "Rituels", [
         ("briefing", "/briefing", "📊", "Briefing"),
         ("standup", "/standup", "🗣️", "Standup"),
         ("digest", "/digest", "🧠", "Digest"),
     ]),
-    ("Pilotage", [
+    ("pilotage", "Pilotage", [
         ("forecast", "/forecast", "🔮", "Prévisions"),
         ("health", "/health", "🩺", "Santé"),
         ("rules", "/rules", "⚙️", "Règles"),
         ("activity", "/activity", "📰", "Activité"),
     ]),
-    ("Outils", [
+    ("outils", "Outils", [
         ("search", "/search", "🔍", "Recherche"),
         ("capture", "/capture", "⚡", "Capture"),
         ("wall", "/wall", "🖥️", "Wallboard"),
     ]),
 ] %}
 <aside class="sidebar" id="sidebar" aria-label="Navigation principale">
-    <a href="/" class="side-logo" aria-label="Kanbante — accueil">
-        <span class="logo-mark">📋</span>
-        <span class="side-label gradient-text">Kanbante</span>
-    </a>
-    <button type="button" class="side-search palette-trigger" title="Palette de commandes (Ctrl+K)">
-        <span class="side-ico">⌨️</span>
-        <span class="side-label">Recherche & commandes</span>
-        <kbd class="side-label">Ctrl K</kbd>
-    </button>
-    <nav class="side-nav">
-        {% for group, links in nav_groups %}
-        <div class="side-group">{{ group }}</div>
-        {% for key, href, icon, label in links %}
-        <a href="{{ href }}" class="side-link{% if active_nav == key %} active{% endif %}" title="{{ label }}">
-            <span class="side-ico">{{ icon }}</span>
-            <span class="side-label">{{ label }}</span>
+    <div class="side-head">
+        <a href="/" class="side-logo" aria-label="Kanbante — accueil">
+            <span class="logo-mark">📋</span>
+            <span class="side-label gradient-text">Kanbante</span>
         </a>
-        {% endfor %}
+        <button type="button" class="side-search palette-trigger" title="Recherche & commandes (Ctrl+K)" aria-label="Recherche et commandes (Ctrl+K)">🔍</button>
+    </div>
+    <nav class="side-nav">
+        {% for gkey, group, links in nav_groups %}
+        <div class="side-section" data-group="{{ gkey }}">
+            <button type="button" class="side-group-btn" data-group-btn="{{ gkey }}" aria-expanded="true">
+                <span>{{ group }}</span>
+                <span class="side-chevron" aria-hidden="true">▾</span>
+            </button>
+            <div class="side-acc">
+                <div class="side-acc-inner">
+                    {% for key, href, icon, label in links %}
+                    <a href="{{ href }}" class="side-link{% if active_nav == key %} active{% endif %}" title="{{ label }}">
+                        <span class="side-ico">{{ icon }}</span>
+                        <span class="side-label">{{ label }}</span>
+                    </a>
+                    {% endfor %}
+                </div>
+            </div>
+        </div>
         {% endfor %}
     </nav>
     <div class="side-foot">

static/css/style.css

@@ -1217,23 +1217,61 @@ body.with-sidebar.sidebar-collapsed { padding-left: 68px; }
 body.sidebar-collapsed .sidebar { width: 68px; }
 .side-logo { display: flex; align-items: center; gap: 10px; padding: 4px 8px 12px; color: var(--text); font-size: 1.18rem; font-weight: 700; white-space: nowrap; }
 .side-logo:hover { text-decoration: none; }
+.side-head {
+    display: flex; align-items: center; gap: 10px;
+    padding: 4px 6px 12px;
+}
+.side-head .side-logo { padding: 0; }
 .side-search {
-    display: flex; align-items: center; gap: 10px; width: 100%;
-    padding: 9px 10px; margin-bottom: 8px; cursor: pointer;
-    background: var(--surface-2); color: var(--text-2);
-    border: 1px solid var(--border); border-radius: 10px; font-size: 0.9rem;
-    white-space: nowrap; overflow: hidden;
+    margin-left: auto; flex-shrink: 0;
+    width: 38px; height: 38px; border-radius: 10px; cursor: pointer;
+    display: inline-flex; align-items: center; justify-content: center;
+    background: var(--surface-2); color: var(--text-2); font-size: 1.02rem;
+    border: 1px solid var(--border);
+    transition: border-color 0.15s, color 0.15s, transform 0.15s;
 }
-.side-search:hover { color: var(--text); border-color: var(--accent, #58a6ff); }
-.side-search kbd {
-    margin-left: auto; font-size: 0.72rem; background: var(--surface-3, #1d2942);
-    border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px;
+.side-search:hover {
+    color: var(--text); border-color: var(--accent, #58a6ff);
+    transform: translateY(-1px);
 }
+body.sidebar-collapsed .side-head { flex-direction: column; padding-left: 0; padding-right: 0; }
+body.sidebar-collapsed .side-search { margin-left: 0; }
 .side-nav { display: flex; flex-direction: column; gap: 2px; }
-.side-group {
-    margin: 14px 10px 5px; font-size: 0.7rem; font-weight: 700;
-    letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3);
-    white-space: nowrap;
+.side-section { margin-top: 10px; }
+.side-section:first-child { margin-top: 2px; }
+.side-group-btn {
+    display: flex; align-items: center; justify-content: space-between;
+    width: 100%; padding: 7px 10px; cursor: pointer;
+    background: transparent; border: none; border-radius: 8px;
+    font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em;
+    text-transform: uppercase; color: var(--text-3); white-space: nowrap;
+    transition: color 0.15s, background 0.15s;
+}
+.side-group-btn:hover { color: var(--text); background: var(--surface-2); }
+.side-chevron {
+    font-size: 0.62rem; transition: transform 0.25s ease; opacity: 0.8;
+}
+.side-acc {
+    display: grid; grid-template-rows: 1fr;
+    transition: grid-template-rows 0.28s cubic-bezier(0.4, 0, 0.2, 1);
+}
+.side-acc-inner {
+    overflow: hidden; min-height: 0;
+    display: flex; flex-direction: column; gap: 2px;
+}
+body.nav-closed-principal [data-group="principal"] .side-acc,
+body.nav-closed-rituels [data-group="rituels"] .side-acc,
+body.nav-closed-pilotage [data-group="pilotage"] .side-acc,
+body.nav-closed-outils [data-group="outils"] .side-acc { grid-template-rows: 0fr; }
+body.nav-closed-principal [data-group="principal"] .side-chevron,
+body.nav-closed-rituels [data-group="rituels"] .side-chevron,
+body.nav-closed-pilotage [data-group="pilotage"] .side-chevron,
+body.nav-closed-outils [data-group="outils"] .side-chevron { transform: rotate(-90deg); }
+@media (min-width: 901px) {
+    /* Rail replié : pas d'accordéon, toutes les icônes visibles. */
+    body.sidebar-collapsed .side-acc { grid-template-rows: 1fr !important; }
+    body.sidebar-collapsed .side-group-btn { display: none; }
+    body.sidebar-collapsed .side-section { margin-top: 4px; }
 }
 .side-link {
     display: flex; align-items: center; gap: 11px;
@@ -1260,10 +1298,8 @@ body.sidebar-collapsed .sidebar { width: 68px; }
 .side-collapse-ico { display: inline-block; transition: transform 0.18s ease; }
 body.sidebar-collapsed .side-collapse-ico { transform: rotate(180deg); }
 .side-version { color: var(--text-3); font-size: 0.8rem; }
-body.sidebar-collapsed .side-label,
-body.sidebar-collapsed .side-group { display: none; }
-body.sidebar-collapsed .side-link,
-body.sidebar-collapsed .side-search { justify-content: center; padding-left: 0; padding-right: 0; }
+body.sidebar-collapsed .side-label { display: none; }
+body.sidebar-collapsed .side-link { justify-content: center; padding-left: 0; padding-right: 0; }
 body.sidebar-collapsed .side-logo { justify-content: center; padding-left: 0; padding-right: 0; }
 body.sidebar-collapsed .side-foot { justify-content: center; }
 .side-backdrop {
@@ -1276,10 +1312,10 @@ body.sidebar-collapsed .side-foot { justify-content: center; }
     body.with-sidebar, body.with-sidebar.sidebar-collapsed { padding-left: 0; }
     .sidebar { width: 264px; transform: translateX(-105%); box-shadow: none; }
     body.sidebar-open .sidebar { transform: none; box-shadow: 18px 0 44px rgba(0,0,0,.5); }
-    body.sidebar-collapsed .side-label,
-    body.sidebar-collapsed .side-group { display: initial; }
-    body.sidebar-collapsed .side-link,
-    body.sidebar-collapsed .side-search { justify-content: flex-start; padding-left: 10px; padding-right: 10px; }
+    body.sidebar-collapsed .side-label { display: initial; }
+    body.sidebar-collapsed .side-link { justify-content: flex-start; padding-left: 10px; padding-right: 10px; }
+    body.sidebar-collapsed .side-head { flex-direction: row; padding: 4px 6px 12px; }
+    body.sidebar-collapsed .side-search { margin-left: auto; }
     .side-foot { display: none; }
     .topbar-search { display: inline-flex; }
 }

static/js/nav.js

@@ -42,4 +42,47 @@
             } catch (e) { /* private mode: state lasts for the page only */ }
         });
     }
+
+    /* Accordion sections: the closed set lives in body classes
+       (applied pre-paint by the bootstrap script in _header.html)
+       and is persisted here on every toggle. */
+    var groupBtns = document.querySelectorAll('[data-group-btn]');
+    function persistClosedGroups() {
+        var closed = [];
+        groupBtns.forEach(function (btn) {
+            if (document.body.classList.contains('nav-closed-' + btn.getAttribute('data-group-btn'))) {
+                closed.push(btn.getAttribute('data-group-btn'));
+            }
+        });
+        try {
+            localStorage.setItem('kanbante-nav-closed', JSON.stringify(closed));
+        } catch (e) { /* non-fatal */ }
+    }
+    function syncGroupBtn(btn) {
+        var closed = document.body.classList.contains(
+            'nav-closed-' + btn.getAttribute('data-group-btn'));
+        btn.setAttribute('aria-expanded', closed ? 'false' : 'true');
+    }
+    groupBtns.forEach(function (btn) {
+        syncGroupBtn(btn);
+        btn.addEventListener('click', function () {
+            document.body.classList.toggle(
+                'nav-closed-' + btn.getAttribute('data-group-btn'));
+            syncGroupBtn(btn);
+            persistClosedGroups();
+        });
+    });
+    /* The section holding the current page is always opened. */
+    var activeLink = document.querySelector('.sidebar .side-link.active');
+    if (activeLink) {
+        var section = activeLink.closest('.side-section');
+        if (section) {
+            var key = section.getAttribute('data-group');
+            if (document.body.classList.contains('nav-closed-' + key)) {
+                document.body.classList.remove('nav-closed-' + key);
+                groupBtns.forEach(syncGroupBtn);
+                persistClosedGroups();
+            }
+        }
+    }
 })();