Release v1.3.0: AI feature flag and MCP server

- Add AI_FEATURES_ENABLED config flag to gate AI/natural-language features
- Conditionally register /api/ask router based on AI_FEATURES_ENABLED
- Add GET /api/config/features endpoint for frontend feature detection
- Update frontend to hide Ask panel when AI features are disabled
- Implement standalone MCP server (backend/mcp_server.py) with tools:
  * search_events, get_event, get_summary, ask
- Add mcp dependency to requirements.txt
- Update .env.example, AGENTS.md, and ROADMAP.md
- Bump VERSION to 1.3.0

backend/frontend/index.html

@@ -38,7 +38,7 @@
       </div>
     </section>
 
-    <section class="panel">
+    <section class="panel" x-show="aiFeaturesEnabled">
       <h3>Ask a question</h3>
       <form class="ask-form" @submit.prevent="askQuestion()">
         <div class="ask-row">
@@ -244,6 +244,7 @@
         },
         options: { actors: [], services: [], operations: [], results: [] },
         appVersion: '',
+        aiFeaturesEnabled: true,
         askQuestionText: '',
         askLoading: false,
         askAnswer: '',
@@ -302,6 +303,18 @@
             this.authConfig = { auth_enabled: false };
           }
 
+          try {
+            const featRes = await fetch('/api/config/features');
+            if (featRes.ok) {
+              const featBody = await featRes.json();
+              this.aiFeaturesEnabled = featBody.ai_features_enabled !== false;
+            } else {
+              this.aiFeaturesEnabled = true;
+            }
+          } catch {
+            this.aiFeaturesEnabled = true;
+          }
+
           if (!this.authConfig?.auth_enabled) {
             this.authBtnText = '';
             return;