Feature: 100 Gründer-Challenge — Leaderboard, Ranking, founder_number

- users.founder_number: sequentielle Nummer #1-#100 (bei Registrierung mit Code oder Admin-Grant)
- Globaler Cap: max. 100 Gründer über alle Partner-Codes zusammen
- GET /api/partner/founders/stats: öffentlich — Slots, Partner-Ranking nach uses, Gründer-Galerie
- Öffentliche Seite /gruender: Fortschrittsbalken, Partner-Challenge-Leaderboard (🥇🥈🥉), Gründer-Grid
- Forum: "Gründer #42"-Badge (lila) neben Autorenname bei Threads + Antworten
- Settings: Badge zeigt "Gründer #N" statt nur "Gründer", klickbar zur /gruender-Seite
- Sidebar: "🏆 100 Gründer"-Link im Footer
- Admin-Grant: Vergabe von founder_number beim manuellen is_founder=1-Setzen
- SW by-v516, APP_VER 493

backend/static/index.html

@@ -230,6 +230,7 @@
                   border-top:1px solid var(--c-border,#e5e7eb);
                   font-size:var(--text-xs);color:var(--c-text-muted);
                   display:flex;gap:var(--space-3);padding-bottom:var(--space-2)">
+        <span data-page="gruender" style="cursor:pointer;text-decoration:underline;font-weight:600;color:#7c3aed">🏆 100 Gründer</span>
         <span data-page="impressum" style="cursor:pointer;text-decoration:underline">Impressum</span>
         <span data-page="datenschutz" style="cursor:pointer;text-decoration:underline">Datenschutz</span>
       </div>
@@ -419,6 +420,10 @@
       <div class="page-body page-container"></div>
     </section>
 
+    <section class="page" id="page-gruender">
+      <div class="page-body page-container"></div>
+    </section>
+
   </main>
 
   <!-- MOBILE BOTTOM NAVIGATION -->

backend/static/js/app.js

@@ -3,7 +3,7 @@
    Router, State-Management, Navigation, Initialisierung.
    ============================================================ */
 
-const APP_VER     = '492'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
+const APP_VER     = '493'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
 const APP_VERSION = '1.0.0'; // ← semantische Version, wird bei make release gesetzt
 const IS_STAGING  = location.hostname === 'staging.banyaro.app';
 
@@ -69,6 +69,7 @@ const App = (() => {
     wurfboerse:     { title: 'Wurfbörse',            module: null },
     zuchthunde:     { title: 'Zuchtkartei',          module: null, requiresAuth: true },
     'zucht-profil': { title: 'Hunde-Profil',         module: null },
+    gruender:       { title: '100 Gründer',           module: null },
   };
 
   // ----------------------------------------------------------

backend/static/js/pages/forum.js

@@ -392,6 +392,7 @@ window.Page_forum = (() => {
         <div class="forum-thread-author-row">
           <div class="forum-avatar">${_esc(_initial(thread.autor_name))}</div>
           <span style="font-size:0.85rem;color:var(--c-text-secondary)">${_esc(thread.autor_name || 'Unbekannt')}</span>
+          ${thread.autor_founder_number ? `<span style="font-size:10px;font-weight:700;background:#7c3aed;color:#fff;padding:1px 5px;border-radius:4px">Gründer #${thread.autor_founder_number}</span>` : ''}
           <div style="margin-left:auto;display:flex;gap:var(--space-2);align-items:center">
             <button class="${likeClass}" id="thread-like-btn" data-count="${thread.likes || 0}">
               ${UI.icon('heart')} <span id="thread-like-count">${thread.likes || 0}</span>
@@ -589,6 +590,7 @@ window.Page_forum = (() => {
         <div class="forum-post-header">
           <div class="forum-avatar forum-avatar--sm">${_esc(_initial(p.autor_name))}</div>
           <span class="forum-post-author">${_esc(p.autor_name || 'Unbekannt')}</span>
+          ${p.autor_founder_number ? `<span style="font-size:10px;font-weight:700;background:#7c3aed;color:#fff;padding:1px 5px;border-radius:4px">Gründer #${p.autor_founder_number}</span>` : ''}
           <span class="forum-post-date">${_fmtDate(p.created_at)}</span>
         </div>
         <div class="forum-post-body">

backend/static/js/pages/gruender.js

@@ -0,0 +1,153 @@
+/* ============================================================
+   BAN YARO — Gründer-Seite
+   Öffentliches Leaderboard der 100 Gründer & Partner.
+   ============================================================ */
+
+window.Page_gruender = (() => {
+
+  let _container = null;
+
+  async function init(container, appState) {
+    _container = container;
+    _render();
+    _load();
+  }
+
+  function refresh() { _load(); }
+  function onDogChange() {}
+
+  function _render() {
+    _container.innerHTML = `
+      <div style="max-width:680px;margin:0 auto;padding:var(--space-4)">
+        <div style="text-align:center;margin-bottom:var(--space-6)">
+          <div style="font-size:48px;margin-bottom:var(--space-2)">🏆</div>
+          <h1 style="font-size:var(--text-2xl);font-weight:800;margin:0 0 var(--space-2)">
+            Die 100 Gründer von Ban Yaro
+          </h1>
+          <p style="color:var(--c-text-secondary);font-size:var(--text-sm);max-width:480px;margin:0 auto">
+            Nur 100 Menschen weltweit können sagen: <em>Ich war von Anfang an dabei.</em>
+            Diese Plätze werden nie wieder vergeben.
+          </p>
+        </div>
+        <div id="grnd-content">
+          <div style="text-align:center;padding:var(--space-8);color:var(--c-text-muted)">Lade…</div>
+        </div>
+      </div>
+    `;
+  }
+
+  async function _load() {
+    const el = _container.querySelector('#grnd-content');
+    try {
+      const d = await API.get('/api/partner/founders/stats');
+      el.innerHTML = _renderStats(d);
+    } catch (e) {
+      el.innerHTML = `<p style="color:var(--c-text-muted);text-align:center">${e.message}</p>`;
+    }
+  }
+
+  function _renderStats(d) {
+    const pct  = Math.round((d.total / d.max) * 100);
+    const open = d.open;
+
+    return `
+      <!-- Fortschrittsbalken -->
+      <div class="by-card" style="padding:var(--space-5);margin-bottom:var(--space-5)">
+        <div style="display:flex;justify-content:space-between;align-items:baseline;margin-bottom:var(--space-2)">
+          <span style="font-weight:700;font-size:var(--text-lg)">${d.total} / ${d.max} Gründer</span>
+          <span style="font-size:var(--text-sm);color:${open > 0 ? 'var(--c-success,#16a34a)' : 'var(--c-danger,#dc2626)'}">
+            ${open > 0 ? `${open} Plätze frei` : 'Geschlossen'}
+          </span>
+        </div>
+        <div style="background:var(--c-surface-2);border-radius:var(--radius-full);height:12px;overflow:hidden">
+          <div style="background:linear-gradient(90deg,#7c3aed,#a855f7);width:${pct}%;height:100%;
+                      border-radius:var(--radius-full);transition:width .5s ease"></div>
+        </div>
+        ${open > 0 ? `
+          <p style="font-size:var(--text-xs);color:var(--c-text-muted);margin:var(--space-2) 0 0;text-align:center">
+            Bist du dabei? Frag einen unserer Partner nach ihrem Einladungscode.
+          </p>` : `
+          <p style="font-size:var(--text-xs);color:var(--c-text-muted);margin:var(--space-2) 0 0;text-align:center">
+            Alle 100 Gründer-Plätze sind vergeben. Diese Gruppe ist für immer geschlossen.
+          </p>`}
+      </div>
+
+      <!-- Partner-Challenge Leaderboard -->
+      ${d.partners.length > 0 ? `
+      <div class="by-card" style="padding:var(--space-5);margin-bottom:var(--space-5)">
+        <h2 style="font-size:var(--text-base);font-weight:700;margin:0 0 var(--space-1)">
+          ${UI.icon('trophy')} Partner-Challenge
+        </h2>
+        <p style="font-size:var(--text-xs);color:var(--c-text-muted);margin:0 0 var(--space-4)">
+          Unsere Partner treten gegeneinander an — wer bringt die meisten Gründer?
+        </p>
+        <div style="display:flex;flex-direction:column;gap:var(--space-2)">
+          ${d.partners.map((p, i) => {
+            const medal = i === 0 ? '🥇' : i === 1 ? '🥈' : i === 2 ? '🥉' : `#${i+1}`;
+            const barPct = d.partners[0].uses > 0 ? Math.round((p.uses / d.partners[0].uses) * 100) : 0;
+            return `
+              <div style="display:flex;align-items:center;gap:var(--space-3);
+                          padding:var(--space-3);border-radius:var(--radius-md);
+                          background:${i === 0 ? 'linear-gradient(135deg,#fef9c3,#fef3c7)' : 'var(--c-surface-2)'}">
+                <div style="font-size:22px;min-width:32px;text-align:center">${medal}</div>
+                <div style="flex:1;min-width:0">
+                  <div style="font-weight:700;font-size:var(--text-sm)">${_esc(p.label)}</div>
+                  <div style="background:var(--c-surface-3,rgba(0,0,0,.08));border-radius:var(--radius-full);
+                               height:6px;margin-top:var(--space-1);overflow:hidden">
+                    <div style="background:#7c3aed;width:${barPct}%;height:100%;
+                                border-radius:var(--radius-full)"></div>
+                  </div>
+                </div>
+                <div style="font-weight:800;font-size:var(--text-lg);color:#7c3aed;min-width:36px;text-align:right">
+                  ${p.uses}
+                </div>
+              </div>
+            `;
+          }).join('')}
+        </div>
+      </div>` : ''}
+
+      <!-- Gründer-Galerie -->
+      ${d.founders.length > 0 ? `
+      <div class="by-card" style="padding:var(--space-5)">
+        <h2 style="font-size:var(--text-base);font-weight:700;margin:0 0 var(--space-4)">
+          ${UI.icon('users')} Die Gründer
+        </h2>
+        <div style="display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:var(--space-2)">
+          ${d.founders.map(f => `
+            <div style="padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);
+                         background:var(--c-surface-2);display:flex;align-items:center;gap:var(--space-2)">
+              <span style="font-size:var(--text-xs);font-weight:800;color:#7c3aed;min-width:28px">#${f.founder_number}</span>
+              <span style="font-size:var(--text-sm);font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap">
+                ${_esc(f.name)}
+              </span>
+            </div>
+          `).join('')}
+          ${Array.from({length: d.open}, (_, i) => `
+            <div style="padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);
+                         border:2px dashed var(--c-border);display:flex;align-items:center;gap:var(--space-2);
+                         opacity:.4">
+              <span style="font-size:var(--text-xs);font-weight:800;color:var(--c-text-muted);min-width:28px">
+                #${d.total + i + 1}
+              </span>
+              <span style="font-size:var(--text-sm);color:var(--c-text-muted)">frei</span>
+            </div>
+          `).join('')}
+        </div>
+      </div>` : `
+      <div class="by-card" style="padding:var(--space-6);text-align:center">
+        <p style="color:var(--c-text-muted);font-size:var(--text-sm)">
+          Noch keine Gründer — sei der Erste!
+        </p>
+      </div>`}
+    `;
+  }
+
+  function _esc(s) {
+    return String(s || '').replace(/[&<>"']/g, c =>
+      ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));
+  }
+
+  return { init, refresh, onDogChange };
+
+})();

backend/static/js/pages/settings.js

@@ -131,8 +131,9 @@ window.Page_settings = (() => {
                      </span>`
                   : `<span class="badge" style="color:var(--c-text-secondary)">Kostenlos</span>`}
                 ${u.is_founder
-                  ? `<span class="badge" style="background:#7c3aed;color:#fff">
-                       <svg class="ph-icon" aria-hidden="true" style="width:12px;height:12px"><use href="/icons/phosphor.svg#key"></use></svg> Gründer
+                  ? `<span class="badge" style="background:#7c3aed;color:#fff;cursor:pointer" data-page="gruender">
+                       <svg class="ph-icon" aria-hidden="true" style="width:12px;height:12px"><use href="/icons/phosphor.svg#key"></use></svg>
+                       ${u.founder_number ? `Gründer #${u.founder_number}` : 'Gründer'}
                      </span>` : ''}
                 ${u.is_partner
                   ? `<span class="badge" style="background:#0ea5e9;color:#fff">

backend/static/sw.js

@@ -3,7 +3,7 @@
    Offline-Cache + Push Notifications + Tile-Cache
    ============================================================ */
 
-const CACHE_VERSION = 'by-v515';
+const CACHE_VERSION = 'by-v516';
 const CACHE_STATIC  = `${CACHE_VERSION}-static`;
 const CACHE_TILES   = 'ban-yaro-tiles-v1';  // bleibt über SW-Updates erhalten
 const CACHE_API     = 'ban-yaro-api-v1';    // API-Response-Cache