Initial commit: JARVIS AI dashboard v2.3

- 4-tier chat: HA control → Ollama → Groq → Claude
- Push-based agent system with heartbeat/metrics
- Network monitoring, alerts, Proxmox, Home Assistant
- Windows + Linux agent installers
- Stats cache cron, facts collector, KB engine

api/endpoints/auth.php

@@ -0,0 +1,53 @@
+<?php
+// Auth endpoint
+if ($method === 'POST') {
+    $username = trim($data['username'] ?? '');
+    $password = $data['password'] ?? '';
+
+    if (!$username || !$password) {
+        http_response_code(400);
+        echo json_encode(['error' => 'Credentials required']);
+        exit;
+    }
+
+    $user = JarvisDB::single(
+        'SELECT * FROM users WHERE username = ?', [$username]
+    );
+
+    if ($user && password_verify($password, $user['password_hash'])) {
+        $token = bin2hex(random_bytes(32));
+        $_SESSION['jarvis_token']   = $token;
+        $_SESSION['jarvis_user_id'] = $user['id'];
+        $_SESSION['jarvis_name']    = $user['display_name'];
+
+        JarvisDB::execute(
+            'UPDATE users SET last_seen = NOW() WHERE id = ?', [$user['id']]
+        );
+
+        // Use stored address preference for greeting
+        $addrRow = JarvisDB::query(
+            "SELECT pref_value FROM kb_preferences WHERE pref_key='user_title' LIMIT 1"
+        );
+        $userAddr = $addrRow[0]['pref_value'] ?? $user['display_name'];
+
+        echo json_encode([
+            'success'      => true,
+            'token'        => $token,
+            'display_name' => $userAddr,
+            'greeting'     => "Welcome back, {$userAddr}. All systems are online and awaiting your command.",
+        ]);
+    } else {
+        http_response_code(401);
+        echo json_encode(['error' => 'Invalid credentials']);
+    }
+} elseif ($method === 'DELETE') {
+    session_destroy();
+    echo json_encode(['success' => true, 'message' => 'Session terminated.']);
+} else {
+    // Check session status
+    $loggedIn = !empty($_SESSION['jarvis_token']);
+    echo json_encode([
+        'authenticated' => $loggedIn,
+        'name' => $_SESSION['jarvis_name'] ?? null,
+    ]);
+}