diff --git a/api/chat.php b/api/chat.php
index dbe026c..8652a7e 100644
--- a/api/chat.php
+++ b/api/chat.php
@@ -1,64 +1,159 @@
 <?php
-header('Content-Type: application/json');
-require_once __DIR__ . '/../db/config.php';
+declare(strict_types=1);
+
+header('Content-Type: application/json; charset=utf-8');
+
+require_once __DIR__ . '/../db/schema.php';
 require_once __DIR__ . '/../ai/LocalAIApi.php';
 
-$input = json_decode(file_get_contents('php://input'), true);
-$message = $input['message'] ?? '';
+function findFaqReply(array $faqs, string $message): string
+{
+    $normalizedMessage = function_exists('mb_strtolower')
+        ? mb_strtolower($message, 'UTF-8')
+        : strtolower($message);
 
-if (empty($message)) {
-    echo json_encode(['reply' => "I didn't catch that. Could you repeat?"]);
+    foreach ($faqs as $faq) {
+        $keywords = isset($faq['keywords']) && is_string($faq['keywords'])
+            ? preg_split('/\s*,\s*/', $faq['keywords'])
+            : [];
+
+        foreach ($keywords as $keyword) {
+            if (!is_string($keyword) || $keyword === '') {
+                continue;
+            }
+
+            $needle = function_exists('mb_strtolower')
+                ? mb_strtolower($keyword, 'UTF-8')
+                : strtolower($keyword);
+
+            $found = function_exists('mb_strpos')
+                ? mb_strpos($normalizedMessage, $needle, 0, 'UTF-8') !== false
+                : strpos($normalizedMessage, $needle) !== false;
+
+            if ($needle !== '' && $found) {
+                return (string) ($faq['answer'] ?? '');
+            }
+        }
+    }
+
+    return '';
+}
+
+$rawInput = file_get_contents('php://input');
+$input = json_decode($rawInput ?: '', true);
+$message = '';
+
+if (is_array($input) && isset($input['message']) && is_string($input['message'])) {
+    $message = trim($input['message']);
+}
+
+if ($message === '') {
+    echo json_encode(['reply' => 'Silakan tulis pertanyaan Anda terlebih dahulu.'], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
     exit;
 }
 
 try {
-    // 1. Fetch Knowledge Base (FAQs)
-    $stmt = db()->query("SELECT keywords, answer FROM faqs");
-    $faqs = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    ensureSupportSchema();
 
-    $knowledgeBase = "Here is the knowledge base for this website:\n\n";
-    foreach ($faqs as $faq) {
-        $knowledgeBase .= "Q: " . $faq['keywords'] . "\nA: " . $faq['answer'] . "\n---\n";
+    $faqs = [];
+    try {
+        $stmt = db()->query('SELECT keywords, answer FROM faqs ORDER BY id ASC');
+        $faqs = $stmt->fetchAll(PDO::FETCH_ASSOC) ?: [];
+    } catch (Throwable $faqError) {
+        error_log('FAQ Load Error: ' . $faqError->getMessage());
     }
 
-    // 2. Construct Prompt for AI
-    $systemPrompt = "You are a helpful, friendly AI assistant for this website. " .
-        "Use the provided Knowledge Base to answer user questions accurately. " .
-        "If the answer is found in the Knowledge Base, rephrase it naturally. " .
-        "If the answer is NOT in the Knowledge Base, use your general knowledge to help, " .
-        "but politely mention that you don't have specific information about that if it seems like a site-specific question. " .
-        "Keep answers concise and professional.\n\n" .
-        $knowledgeBase;
+    $faqReply = findFaqReply($faqs, $message);
+    if ($faqReply !== '') {
+        try {
+            $stmt = db()->prepare('INSERT INTO messages (user_message, ai_response) VALUES (:user_message, :ai_response)');
+            $stmt->bindValue(':user_message', $message);
+            $stmt->bindValue(':ai_response', $faqReply);
+            $stmt->execute();
+        } catch (Throwable $saveError) {
+            error_log('DB Save Error: ' . $saveError->getMessage());
+        }
 
-    // 3. Call AI API
-    $response = LocalAIApi::createResponse([
-        'model' => 'gpt-4o-mini',
-        'input' => [
-            ['role' => 'system', 'content' => $systemPrompt],
-            ['role' => 'user', 'content' => $message],
+        echo json_encode(['reply' => $faqReply], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+        exit;
+    }
+
+    $knowledgeBase = "Berikut knowledge base website ini:
+
+";
+    if ($faqs === []) {
+        $knowledgeBase .= "- Belum ada FAQ khusus yang dikonfigurasi.
+";
+    } else {
+        foreach ($faqs as $faq) {
+            $knowledgeBase .= 'Q: ' . ($faq['keywords'] ?? '') . "
+";
+            $knowledgeBase .= 'A: ' . ($faq['answer'] ?? '') . "
+---
+";
+        }
+    }
+
+    $systemPrompt = "Anda adalah asisten AI yang ramah untuk website ini. "
+        . "Gunakan knowledge base bila jawabannya tersedia. "
+        . "Jika pertanyaan tidak ada di knowledge base, bantu secara umum dan jelaskan dengan singkat. "
+        . "Jawab singkat, jelas, dan profesional dalam Bahasa Indonesia.
+
+"
+        . $knowledgeBase;
+
+    $response = LocalAIApi::createResponse(
+        [
+            'input' => [
+                ['role' => 'system', 'content' => $systemPrompt],
+                ['role' => 'user', 'content' => $message],
+            ],
+        ],
+        [
+            'poll_interval' => 2,
+            'poll_timeout' => 45,
         ]
-    ]);
+    );
 
     if (!empty($response['success'])) {
         $aiReply = LocalAIApi::extractText($response);
-        
-        // 4. Save to Database
-        try {
-            $stmt = db()->prepare("INSERT INTO messages (user_message, ai_response) VALUES (?, ?)");
-            $stmt->execute([$message, $aiReply]);
-        } catch (Exception $e) {
-            error_log("DB Save Error: " . $e->getMessage());
-            // Continue even if save fails, so the user still gets a reply
+        if ($aiReply === '') {
+            $decoded = LocalAIApi::decodeJsonFromResponse($response);
+            if ($decoded) {
+                $aiReply = json_encode($decoded, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+            }
+        }
+        if ($aiReply === '') {
+            $aiReply = 'Pesan Anda sudah diterima, tetapi balasan otomatis belum tersedia saat ini.';
         }
 
-        echo json_encode(['reply' => $aiReply]);
-    } else {
-        // Fallback if AI fails
-        error_log("AI Error: " . ($response['error'] ?? 'Unknown'));
-        echo json_encode(['reply' => "I'm having trouble connecting to my brain right now. Please try again later."]);
+        try {
+            $stmt = db()->prepare('INSERT INTO messages (user_message, ai_response) VALUES (:user_message, :ai_response)');
+            $stmt->bindValue(':user_message', $message);
+            $stmt->bindValue(':ai_response', $aiReply);
+            $stmt->execute();
+        } catch (Throwable $saveError) {
+            error_log('DB Save Error: ' . $saveError->getMessage());
+        }
+
+        echo json_encode(['reply' => $aiReply], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+        exit;
     }
 
-} catch (Exception $e) {
-    error_log("Chat Error: " . $e->getMessage());
-    echo json_encode(['reply' => "An internal error occurred."]);
+    error_log('AI Error: ' . ($response['error'] ?? 'Unknown'));
+    $fallbackReply = 'Saya belum bisa membalas otomatis saat ini. Silakan coba lagi sebentar lagi.';
+
+    try {
+        $stmt = db()->prepare('INSERT INTO messages (user_message, ai_response) VALUES (:user_message, :ai_response)');
+        $stmt->bindValue(':user_message', $message);
+        $stmt->bindValue(':ai_response', $fallbackReply);
+        $stmt->execute();
+    } catch (Throwable $saveError) {
+        error_log('DB Save Error: ' . $saveError->getMessage());
+    }
+
+    echo json_encode(['reply' => $fallbackReply], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+} catch (Throwable $error) {
+    error_log('Chat Error: ' . $error->getMessage());
+    echo json_encode(['reply' => 'Terjadi kesalahan internal. Silakan coba lagi.'], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
 }
diff --git a/api/telegram_webhook.php b/api/telegram_webhook.php
index fa4899c..1b6c6b8 100644
--- a/api/telegram_webhook.php
+++ b/api/telegram_webhook.php
@@ -1,91 +1,180 @@
 <?php
-require_once __DIR__ . '/../db/config.php';
+declare(strict_types=1);
+
+require_once __DIR__ . '/../db/schema.php';
 require_once __DIR__ . '/../ai/LocalAIApi.php';
 
-// Get Telegram Update
-$content = file_get_contents("php://input");
-$update = json_decode($content, true);
+function sendTelegramMessage(int|string $chatId, string $text, string $token): bool
+{
+    $url = "https://api.telegram.org/bot{$token}/sendMessage";
+    $data = [
+        'chat_id' => $chatId,
+        'text' => $text,
+    ];
 
-if (!$update || !isset($update['message'])) {
+    $options = [
+        'http' => [
+            'header'  => "Content-type: application/x-www-form-urlencoded
+",
+            'method'  => 'POST',
+            'content' => http_build_query($data),
+            'timeout' => 20,
+        ],
+    ];
+
+    $context = stream_context_create($options);
+    $result = @file_get_contents($url, false, $context);
+
+    return $result !== false;
+}
+
+function findFaqReply(array $faqs, string $message): string
+{
+    $normalizedMessage = function_exists('mb_strtolower')
+        ? mb_strtolower($message, 'UTF-8')
+        : strtolower($message);
+
+    foreach ($faqs as $faq) {
+        $keywords = isset($faq['keywords']) && is_string($faq['keywords'])
+            ? preg_split('/\s*,\s*/', $faq['keywords'])
+            : [];
+
+        foreach ($keywords as $keyword) {
+            if (!is_string($keyword) || $keyword === '') {
+                continue;
+            }
+
+            $needle = function_exists('mb_strtolower')
+                ? mb_strtolower($keyword, 'UTF-8')
+                : strtolower($keyword);
+
+            $found = function_exists('mb_strpos')
+                ? mb_strpos($normalizedMessage, $needle, 0, 'UTF-8') !== false
+                : strpos($normalizedMessage, $needle) !== false;
+
+            if ($needle !== '' && $found) {
+                return (string) ($faq['answer'] ?? '');
+            }
+        }
+    }
+
+    return '';
+}
+
+$content = file_get_contents('php://input');
+$update = json_decode($content ?: '', true);
+
+if (!is_array($update) || !isset($update['message']) || !is_array($update['message'])) {
     exit;
 }
 
 $message = $update['message'];
-$chatId = $message['chat']['id'];
-$text = $message['text'] ?? '';
+$chatId = $message['chat']['id'] ?? null;
+$text = isset($message['text']) && is_string($message['text']) ? trim($message['text']) : '';
 
-if (empty($text)) {
+if ($chatId === null || $text === '') {
     exit;
 }
 
-// Get Telegram Token from DB
-$stmt = db()->query("SELECT setting_value FROM settings WHERE setting_key = 'telegram_token'");
-$token = $stmt->fetchColumn();
-
-if (!$token) {
-    error_log("Telegram Error: No bot token found in settings.");
-    exit;
-}
-
-function sendTelegramMessage($chatId, $text, $token) {
-    $url = "https://api.telegram.org/bot$token/sendMessage";
-    $data = [
-        'chat_id' => $chatId,
-        'text' => $text,
-        'parse_mode' => 'Markdown'
-    ];
-    
-    $options = [
-        'http' => [
-            'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
-            'method'  => 'POST',
-            'content' => http_build_query($data),
-        ],
-    ];
-    $context  = stream_context_create($options);
-    return file_get_contents($url, false, $context);
-}
-
-// Process with AI (Similar logic to api/chat.php)
 try {
-    // 1. Fetch Knowledge Base
-    $stmt = db()->query("SELECT keywords, answer FROM faqs");
-    $faqs = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    ensureSupportSchema();
 
-    $knowledgeBase = "Here is the knowledge base for this website:\n\n";
-    foreach ($faqs as $faq) {
-        $knowledgeBase .= "Q: " . $faq['keywords'] . "\nA: " . $faq['answer'] . "\n---\n";
+    $stmt = db()->prepare('SELECT setting_value FROM settings WHERE setting_key = :setting_key LIMIT 1');
+    $stmt->bindValue(':setting_key', 'telegram_token');
+    $stmt->execute();
+    $token = (string) ($stmt->fetchColumn() ?: '');
+
+    if ($token === '') {
+        error_log('Telegram Error: No bot token found in settings.');
+        exit;
     }
 
-    $systemPrompt = "You are a helpful AI assistant integrated with Telegram. " .
-        "Use the provided Knowledge Base to answer user questions. " .
-        "Keep answers concise for mobile reading. Use Markdown for formatting.\n\n" .
-        $knowledgeBase;
+    $faqs = [];
+    try {
+        $stmt = db()->query('SELECT keywords, answer FROM faqs ORDER BY id ASC');
+        $faqs = $stmt->fetchAll(PDO::FETCH_ASSOC) ?: [];
+    } catch (Throwable $faqError) {
+        error_log('Telegram FAQ Load Error: ' . $faqError->getMessage());
+    }
 
-    // 2. Call AI
-    $response = LocalAIApi::createResponse([
-        'model' => 'gpt-4o-mini',
-        'input' => [
-            ['role' => 'system', 'content' => $systemPrompt],
-            ['role' => 'user', 'content' => $text],
+    $faqReply = findFaqReply($faqs, $text);
+    if ($faqReply !== '') {
+        try {
+            $stmt = db()->prepare('INSERT INTO messages (user_message, ai_response) VALUES (:user_message, :ai_response)');
+            $stmt->bindValue(':user_message', '[Telegram] ' . $text);
+            $stmt->bindValue(':ai_response', $faqReply);
+            $stmt->execute();
+        } catch (Throwable $saveError) {
+            error_log('Telegram Save Error: ' . $saveError->getMessage());
+        }
+
+        sendTelegramMessage($chatId, $faqReply, $token);
+        exit;
+    }
+
+    $knowledgeBase = "Berikut knowledge base website ini:
+
+";
+    if ($faqs === []) {
+        $knowledgeBase .= "- Belum ada FAQ khusus yang dikonfigurasi.
+";
+    } else {
+        foreach ($faqs as $faq) {
+            $knowledgeBase .= 'Q: ' . ($faq['keywords'] ?? '') . "
+";
+            $knowledgeBase .= 'A: ' . ($faq['answer'] ?? '') . "
+---
+";
+        }
+    }
+
+    $systemPrompt = "Anda adalah asisten AI Telegram untuk website ini. "
+        . "Gunakan knowledge base bila relevan. "
+        . "Jawab ringkas, jelas, dan profesional dalam Bahasa Indonesia.
+
+"
+        . $knowledgeBase;
+
+    $response = LocalAIApi::createResponse(
+        [
+            'input' => [
+                ['role' => 'system', 'content' => $systemPrompt],
+                ['role' => 'user', 'content' => $text],
+            ],
+        ],
+        [
+            'poll_interval' => 2,
+            'poll_timeout' => 45,
         ]
-    ]);
+    );
 
     if (!empty($response['success'])) {
         $aiReply = LocalAIApi::extractText($response);
-        
-        // 3. Save History
-        try {
-            $stmt = db()->prepare("INSERT INTO messages (user_message, ai_response) VALUES (?, ?)");
-            $stmt->execute(["[Telegram] " . $text, $aiReply]);
-        } catch (Exception $e) {}
+        if ($aiReply === '') {
+            $decoded = LocalAIApi::decodeJsonFromResponse($response);
+            if ($decoded) {
+                $aiReply = json_encode($decoded, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+            }
+        }
+        if ($aiReply === '') {
+            $aiReply = 'Pesan Anda sudah diterima, tetapi balasan otomatis belum tersedia saat ini.';
+        }
+
+        try {
+            $stmt = db()->prepare('INSERT INTO messages (user_message, ai_response) VALUES (:user_message, :ai_response)');
+            $stmt->bindValue(':user_message', '[Telegram] ' . $text);
+            $stmt->bindValue(':ai_response', $aiReply);
+            $stmt->execute();
+        } catch (Throwable $saveError) {
+            error_log('Telegram Save Error: ' . $saveError->getMessage());
+        }
 
-        // 4. Send back to Telegram
         sendTelegramMessage($chatId, $aiReply, $token);
-    } else {
-        sendTelegramMessage($chatId, "I'm sorry, I encountered an error processing your request.", $token);
+        exit;
     }
 
-} catch (Exception $e) {
-    error_log("Telegram Webhook Error: " . $e->getMessage());
+    error_log('Telegram AI Error: ' . ($response['error'] ?? 'Unknown'));
+    sendTelegramMessage($chatId, 'Maaf, saya belum bisa memproses permintaan Anda saat ini.', $token);
+} catch (Throwable $error) {
+    error_log('Telegram Webhook Error: ' . $error->getMessage());
 }
diff --git a/db/migrations/20260512_001_support_tables.sql b/db/migrations/20260512_001_support_tables.sql
new file mode 100644
index 0000000..49c48da
--- /dev/null
+++ b/db/migrations/20260512_001_support_tables.sql
@@ -0,0 +1,23 @@
+-- Bootstrap tables required by the built-in chat and Telegram integrations.
+CREATE TABLE IF NOT EXISTS faqs (
+  id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+  keywords VARCHAR(255) NOT NULL,
+  answer TEXT NOT NULL,
+  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS messages (
+  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+  user_message TEXT NOT NULL,
+  ai_response MEDIUMTEXT NULL,
+  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  INDEX idx_messages_created_at (created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS settings (
+  id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+  setting_key VARCHAR(100) NOT NULL,
+  setting_value TEXT NULL,
+  updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  UNIQUE KEY uniq_settings_key (setting_key)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
diff --git a/db/schema.php b/db/schema.php
new file mode 100644
index 0000000..fbce400
--- /dev/null
+++ b/db/schema.php
@@ -0,0 +1,81 @@
+<?php
+declare(strict_types=1);
+
+require_once __DIR__ . '/config.php';
+
+function ensureSupportSchema(): void
+{
+    static $bootstrapped = false;
+
+    if ($bootstrapped) {
+        return;
+    }
+
+    $fallbackSql = <<<'SQL'
+CREATE TABLE IF NOT EXISTS faqs (
+  id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+  keywords VARCHAR(255) NOT NULL,
+  answer TEXT NOT NULL,
+  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS messages (
+  id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+  user_message TEXT NOT NULL,
+  ai_response MEDIUMTEXT NULL,
+  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  INDEX idx_messages_created_at (created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS settings (
+  id INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+  setting_key VARCHAR(100) NOT NULL,
+  setting_value TEXT NULL,
+  updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  UNIQUE KEY uniq_settings_key (setting_key)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+SQL;
+
+    $migrationPath = __DIR__ . '/migrations/20260512_001_support_tables.sql';
+    $sql = $fallbackSql;
+
+    if (is_readable($migrationPath)) {
+        $fileSql = file_get_contents($migrationPath);
+        if (is_string($fileSql) && trim($fileSql) !== '') {
+            $sql = $fileSql;
+        }
+    }
+
+    db()->exec($sql);
+
+    $faqCount = (int) db()->query('SELECT COUNT(*) FROM faqs')->fetchColumn();
+    if ($faqCount === 0) {
+        $seedFaqs = [
+            [
+                'keywords' => 'penawaran, quotation, quote, harga',
+                'answer' => 'Gunakan modul penawaran untuk membuat penawaran harga barang maupun jasa sebelum pekerjaan dimulai.',
+            ],
+            [
+                'keywords' => 'spk, surat perintah kerja, work order',
+                'answer' => 'SPK dipakai untuk menerbitkan perintah kerja berdasarkan penawaran yang sudah disetujui pelanggan.',
+            ],
+            [
+                'keywords' => 'surat jalan, delivery note, pengiriman',
+                'answer' => 'Surat jalan dipakai untuk mencatat barang yang dikirim atau pekerjaan yang dikirimkan ke pelanggan.',
+            ],
+            [
+                'keywords' => 'invoice, faktur, tagihan, pembayaran',
+                'answer' => 'Invoice diterbitkan sebagai tagihan akhir setelah pengiriman barang atau penyelesaian jasa.',
+            ],
+        ];
+
+        $stmt = db()->prepare('INSERT INTO faqs (keywords, answer) VALUES (:keywords, :answer)');
+        foreach ($seedFaqs as $faq) {
+            $stmt->bindValue(':keywords', $faq['keywords']);
+            $stmt->bindValue(':answer', $faq['answer']);
+            $stmt->execute();
+        }
+    }
+
+    $bootstrapped = true;
+}