v0.4.1: app filtering + clickable dashboard stat cards

Add filter bar (Mind/Futó/Leállítva/Telepíthető) to Alkalmazások page with
URL-based filter persistence. Dashboard stat cards are now clickable links
that navigate to the filtered stacks view.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

controller/internal/web/templates/dashboard.html

@@ -7,18 +7,18 @@
 </div>
 
 <div class="stats-grid">
-    <div class="stat-card stat-running">
+    <a href="/stacks?filter=running" class="stat-card stat-running">
         <div class="stat-value">{{.RunningCount}}</div>
         <div class="stat-label">Futó alkalmazás</div>
-    </div>
-    <div class="stat-card stat-stopped">
+    </a>
+    <a href="/stacks?filter=stopped" class="stat-card stat-stopped">
         <div class="stat-value">{{.StoppedCount}}</div>
         <div class="stat-label">Leállítva</div>
-    </div>
-    <div class="stat-card stat-total">
+    </a>
+    <a href="/stacks" class="stat-card stat-total">
         <div class="stat-value">{{.TotalCount}}</div>
         <div class="stat-label">Összes alkalmazás</div>
-    </div>
+    </a>
 </div>
 
 {{if .SystemInfo.TotalMemMB}}

controller/internal/web/templates/stacks.html

@@ -8,9 +8,16 @@
 </div>
 <div id="sync-toast" class="sync-toast" style="display:none"></div>
 
+<div class="filter-bar" id="filter-bar">
+    <button class="filter-btn active" data-filter="all">Mind <span class="filter-count" id="count-all"></span></button>
+    <button class="filter-btn" data-filter="running">Futó <span class="filter-count" id="count-running"></span></button>
+    <button class="filter-btn" data-filter="stopped">Leállítva <span class="filter-count" id="count-stopped"></span></button>
+    <button class="filter-btn" data-filter="available">Telepíthető <span class="filter-count" id="count-available"></span></button>
+</div>
+
 <div class="stack-grid">
     {{range .Stacks}}
-    <div class="stack-detail-card stack-state-{{stateColor .State}}"{{if not .Protected}} data-href="/apps/{{.Meta.Slug}}"{{end}}>
+    <div class="stack-detail-card stack-state-{{stateColor .State}}" data-filter-state="{{filterCategory .State .Deployed}}"{{if not .Protected}} data-href="/apps/{{.Meta.Slug}}"{{end}}>
         <div class="stack-detail-header">
             <div class="stack-title-row">
                 <img class="stack-logo-lg" src="{{logoURL .Meta.Slug}}"
@@ -72,5 +79,55 @@
     {{end}}
 </div>
 
+<script>
+(function() {
+    var cards = document.querySelectorAll('.stack-detail-card[data-filter-state]');
+    var counts = {all: cards.length, running: 0, stopped: 0, available: 0};
+
+    cards.forEach(function(card) {
+        var cat = card.getAttribute('data-filter-state');
+        if (counts[cat] !== undefined) counts[cat]++;
+    });
+
+    ['all', 'running', 'stopped', 'available'].forEach(function(f) {
+        var el = document.getElementById('count-' + f);
+        if (el) el.textContent = '(' + counts[f] + ')';
+    });
+
+    function applyFilter(filter) {
+        cards.forEach(function(card) {
+            if (filter === 'all' || card.getAttribute('data-filter-state') === filter) {
+                card.style.display = '';
+            } else {
+                card.style.display = 'none';
+            }
+        });
+
+        document.querySelectorAll('.filter-btn').forEach(function(btn) {
+            btn.classList.toggle('active', btn.getAttribute('data-filter') === filter);
+        });
+
+        var url = new URL(window.location);
+        if (filter === 'all') {
+            url.searchParams.delete('filter');
+        } else {
+            url.searchParams.set('filter', filter);
+        }
+        history.replaceState(null, '', url);
+    }
+
+    document.querySelectorAll('.filter-btn').forEach(function(btn) {
+        btn.addEventListener('click', function() {
+            applyFilter(this.getAttribute('data-filter'));
+        });
+    });
+
+    var urlFilter = new URLSearchParams(window.location.search).get('filter');
+    if (urlFilter && ['running', 'stopped', 'available'].indexOf(urlFilter) !== -1) {
+        applyFilter(urlFilter);
+    }
+})();
+</script>
+
 {{template "layout_end" .}}
 {{end}}

controller/internal/web/templates/style.css

@@ -822,6 +822,54 @@ select.form-control option { background: var(--bg-secondary); color: var(--text-
     border-color: rgba(218, 54, 51, 0.3);
 }
 
+/* --- Filter bar --- */
+.filter-bar {
+    display: flex;
+    gap: 0.5rem;
+    margin-bottom: 1.5rem;
+    flex-wrap: wrap;
+}
+
+.filter-btn {
+    padding: 0.4rem 1rem;
+    border-radius: 20px;
+    border: 1px solid var(--border-color);
+    background: var(--bg-secondary);
+    color: var(--text-secondary);
+    cursor: pointer;
+    font-size: 0.85rem;
+    font-family: inherit;
+    transition: all 0.2s;
+}
+
+.filter-btn:hover {
+    border-color: var(--accent-blue);
+    color: var(--text-primary);
+}
+
+.filter-btn.active {
+    background: var(--accent-blue);
+    border-color: var(--accent-blue);
+    color: #fff;
+}
+
+.filter-count {
+    opacity: 0.7;
+    font-size: 0.8rem;
+}
+
+/* Clickable stat cards */
+a.stat-card {
+    text-decoration: none;
+    color: inherit;
+    transition: transform 0.15s, box-shadow 0.15s;
+}
+
+a.stat-card:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
+}
+
 /* Clickable cards */
 [data-href] { cursor: pointer; }