feat: GitHub Code Search als Agent-Tool + Dashboard-Badges

- UseGitHubSearch Property im AgentRecord (Default: false)
- DB-Migration: use_github_search Spalte in agents
- Checkbox im Agent-Formular (Standard: unchecked)
- Tool nur aktiv wenn Agent-Checkbox UND GitHubToken konfiguriert
- includeGitHubSearch Parameter durch StreamChat/AddToolsToPayload
- Dashboard-Badges: 🔮 Auto-Kontext + 🐙 GitHub Search

wwwroot/index.html

@@ -241,6 +241,10 @@
               <input type="checkbox" id="agentUseAutoContext" checked>
               Automatischer Kontext <span class="checkbox-hint">(Relevante Erinnerungen werden automatisch abgerufen)</span>
             </label>
+            <label class="checkbox-label">
+              <input type="checkbox" id="agentUseGitHubSearch">
+              GitHub Code Search <span class="checkbox-hint">(Öffentlichen Code auf GitHub durchsuchen)</span>
+            </label>
             <label>Web-Suche</label>
             <select id="agentWebSearchVersion">
               <option value="">Deaktiviert</option>

wwwroot/js/cards.js

@@ -107,6 +107,8 @@ function buildAgentCard(agent, skills) {
   if (agent.useIdentity) badges.push('<span class="badge badge-feature" title="Hat eine Identität (IDENTITY.md)"><i class="fa fa-id-badge"></i> Ich</span>');
   if (agent.useUserInfo) badges.push('<span class="badge badge-feature" title="Kennt sein Gegenüber (Benutzer-Persona)"><i class="fa fa-user"></i> Du</span>');
   if (agent.useMemory) badges.push('<span class="badge badge-feature" title="Zugriff auf Erinnerungen (Memory-Tools)"><i class="fa fa-database"></i> Erinnerungen</span>');
+  if (agent.useAutoContext) badges.push('<span class="badge badge-feature" title="Relevante Erinnerungen werden automatisch abgerufen"><i class="fa fa-magic"></i> Auto-Kontext</span>');
+  if (agent.useGitHubSearch) badges.push('<span class="badge badge-feature" title="Öffentlichen Code auf GitHub durchsuchen"><i class="fa fa-github"></i> GitHub Search</span>');
   if (agent.webSearchVersion) {
     const wsYear = agent.webSearchVersion.includes('2025') ? 'Version 2025' : 'v2026';
     badges.push(`<span class="badge badge-feature" title="Web-Suche - ${wsYear}"><i class="fa fa-search"></i> Web-Suche</span>`);

wwwroot/js/pages/agent-page.js

@@ -53,6 +53,7 @@ registerPage('agent', {
     const useUserInfoEl = document.getElementById('agentUseUserInfo');
     const useMemoryEl = document.getElementById('agentUseMemory');
     const useAutoContextEl = document.getElementById('agentUseAutoContext');
+    const useGitHubSearchEl = document.getElementById('agentUseGitHubSearch');
     const webSearchVersionEl = document.getElementById('agentWebSearchVersion');
     const avatarPreview = document.getElementById('avatarPreview');
     const saveBtn = document.getElementById('agentSaveBtn');
@@ -94,6 +95,7 @@ registerPage('agent', {
       useUserInfoEl.checked = agent.useUserInfo !== false;
       useMemoryEl.checked = agent.useMemory !== false;
       useAutoContextEl.checked = agent.useAutoContext !== false;
+      useGitHubSearchEl.checked = agent.useGitHubSearch || false;
       webSearchVersionEl.value = agent.webSearchVersion || '';
       isPublicEl.checked = agent.isPublic || false;
       deleteBtn.hidden = false;
@@ -136,6 +138,7 @@ registerPage('agent', {
         useUserInfo: useUserInfoEl.checked,
         useMemory: useMemoryEl.checked,
         useAutoContext: useAutoContextEl.checked,
+        useGitHubSearch: useGitHubSearchEl.checked,
         webSearchVersion: webSearchVersionEl.value,
         avatar: _agentAvatarEditor.getImage(),
         avatarScale: _agentAvatarEditor.getScale(),