Wersja bazowa

2026-01-10 07:48:27 +00:00 · 2026-01-10 07:48:27 +00:00 · 9234472371
commit 9234472371
parent 110c203f6a
62 changed files with 3829 additions and 146 deletions
--- a/WorkflowEngine.php
+++ b/WorkflowEngine.php
@ -0,0 +1,263 @@
+<?php
+require_once __DIR__ . '/db/config.php';
+
+/**
+ * Class WorkflowEngine
+ * 
+ * Centralny serwis do zarządzania logiką procesów.
+ * Interfejs użytkownika nie powinien bezpośrednio zmieniać statusów ani instancji; wszystkie operacje muszą przechodzić przez ten silnik.
+ */
+class WorkflowEngine {
+
+    private $pdo;
+
+    public function __construct() {
+        $this->pdo = db();
+    }
+
+    /**
+     * Pobiera wszystkie dane niezbędne dla głównej macierzy pulpitu procesów.
+     *
+     * @return array Tablica zawierająca 'people', 'definitions' i zmapowaną tablicę 'instances'.
+     */
+    public function getDashboardMatrix(): array {
+        // Get all people (potential assignees)
+        $stmt_people = $this->pdo->prepare("SELECT id, firstName, lastName, companyName, role, email, phone FROM people ORDER BY lastName, firstName");
+        $stmt_people->execute();
+        $people = $stmt_people->fetchAll(PDO::FETCH_ASSOC);
+
+        // Fetch all process definitions
+        $stmt_defs = $this->pdo->prepare("SELECT id, name FROM process_definitions ORDER BY name");
+        $stmt_defs->execute();
+        $process_definitions = $stmt_defs->fetchAll(PDO::FETCH_ASSOC);
+
+        // Fetch instances
+        $stmt_instances = $this->pdo->prepare("SELECT * FROM process_instances");
+        $stmt_instances->execute();
+        $instances_data = $stmt_instances->fetchAll(PDO::FETCH_ASSOC);
+        
+        $instances = [];
+        foreach ($instances_data as $instance) {
+            $instances[$instance['personId']][$instance['processDefinitionId']] = $instance;
+        }
+
+        return [
+            'people' => $people,
+            'definitions' => $process_definitions,
+            'instances' => $instances,
+        ];
+    }
+
+    /**
+     * Rozpoczyna nową instancję procesu dla danej osoby.
+     *
+     * @param string $processCode Unikalny kod definicji procesu.
+     * @param int $personId ID osoby.
+     * @param int $userId ID użytkownika inicjującego akcję.
+     * @return int|null ID nowo utworzonej instancji lub null w przypadku niepowodzenia.
+     */
+    public function startProcess(string $processCode, int $personId, int $userId): ?int {
+        // 1. Znajdź aktywną definicję procesu po kodzie.
+        // 2. Pobierz start_node_id z definicji.
+        // 3. Utwórz nową instancję procesu ze statusem 'in_progress' i current_node_id.
+        // 4. Utwórz zdarzenie systemowe dla rozpoczęcia procesu.
+        // TODO: Implementacja logiki.
+        return null;
+    }
+
+    /**
+     * Pobiera pojedynczą instancję procesu, tworząc ją, jeśli nie istnieje.
+     *
+     * @param int $personId
+     * @param int $processDefinitionId
+     * @param int $userId Użytkownik inicjujący utworzenie, jeśli to nastąpi.
+     * @return array|null Tablica asocjacyjna z danymi instancji.
+     */
+    public function getOrCreateInstanceByDefId(int $personId, int $processDefinitionId, int $userId): ?array {
+        $stmt = $this->pdo->prepare("SELECT * FROM process_instances WHERE personId = ? AND processDefinitionId = ?");
+        $stmt->execute([$personId, $processDefinitionId]);
+        $instance = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$instance) {
+            // Fetch the process definition to get the initial status
+            $stmt_def = $this->pdo->prepare("SELECT definition_json FROM process_definitions WHERE id = ?");
+            $stmt_def->execute([$processDefinitionId]);
+            $definition_raw = $stmt_def->fetchColumn();
+            $definition = $definition_raw ? json_decode($definition_raw, true) : null;
+            $initial_status = $definition['initial_status'] ?? 'none';
+
+            $stmt_insert = $this->pdo->prepare("INSERT INTO process_instances (personId, processDefinitionId, current_status) VALUES (?, ?, ?)");
+            $stmt_insert->execute([$personId, $processDefinitionId, $initial_status]);
+            $instanceId = $this->pdo->lastInsertId();
+
+            // Utwórz zdarzenie systemowe dla utworzenia instancji
+            $this->addEvent($instanceId, 'system', 'Instancja utworzona.', null, [], $userId);
+
+            // Pobierz ponownie nowo utworzoną instancję
+            $stmt->execute([$personId, $processDefinitionId]);
+            $instance = $stmt->fetch(PDO::FETCH_ASSOC);
+        }
+
+        return $instance;
+    }
+
+    /**
+     * Dodaje nowe zdarzenie do historii instancji.
+     * To jest wewnętrzna metoda pomocnicza.
+     */
+    private function addEvent(int $instanceId, string $eventType, string $message, ?string $nodeId, array $payload, int $userId): void {
+        $stmt = $this->pdo->prepare(
+            "INSERT INTO process_events (processInstanceId, event_type, message, node_id, payload_json, createdById) VALUES (?, ?, ?, ?, ?, ?)"
+        );
+        $stmt->execute([$instanceId, $eventType, $message, $nodeId, json_encode($payload), $userId]);
+    }
+
+    /**
+     * Pobiera historię zdarzeń dla danej instancji.
+     *
+     * @param int $instanceId
+     * @return array
+     */
+    public function getEvents(int $instanceId): array {
+        $stmt_events = $this->pdo->prepare("SELECT pe.*, p.email as user_email, p.firstName, p.lastName FROM process_events pe JOIN people p ON pe.createdById = p.id WHERE pe.processInstanceId = ? ORDER BY pe.createdAt DESC");
+        $stmt_events->execute([$instanceId]);
+        return $stmt_events->fetchAll(PDO::FETCH_ASSOC);
+    }
+
+    /**
+     * Pobiera listę dostępnych przejść z bieżącego węzła instancji.
+     *
+     * @param int $instanceId
+     * @return array Lista dostępnych przejść.
+     */
+    public function getAvailableTransitions(int $instanceId): array {
+        $stmt = $this->pdo->prepare(
+            'SELECT pi.current_status, pd.definition_json '
+            . 'FROM process_instances pi '
+            . 'JOIN process_definitions pd ON pi.processDefinitionId = pd.id '
+            . 'WHERE pi.id = ?'
+        );
+        $stmt->execute([$instanceId]);
+        $result = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$result || empty($result['definition_json'])) {
+            return [];
+        }
+
+        $definition = json_decode($result['definition_json'], true);
+        if (!$definition || !isset($definition['transitions'])) {
+            return [];
+        }
+
+        $current_status = $result['current_status'];
+        $allowed_transitions = $definition['transitions'][$current_status] ?? [];
+
+        $transitions = [];
+        foreach ($allowed_transitions as $target_status) {
+            $transitions[] = [
+                'id' => 'transition_' . str_replace(' ', '_', strtolower($target_status)), // e.g., transition_in_progress
+                'name' => 'Oznacz jako ' . $target_status, // e.g., Oznacz jako In Progress
+                'target_status' => $target_status
+            ];
+        }
+
+        return $transitions;
+    }
+
+    /**
+     * Stosuje przejście do instancji procesu. To jest główna metoda do postępu w przepływie pracy.
+     *
+     * @param int $instanceId ID instancji procesu.
+     * @param string $transitionId ID przejścia do zastosowania (z definition_json).
+     * @param array $inputPayload Dane zebrane od użytkownika dla tego kroku.
+     * @param int $userId ID użytkownika wykonującego akcję.
+     * @return bool True w przypadku sukcesu, false w przypadku porażki.
+     */
+    public function applyTransition(int $instanceId, string $transitionId, array $inputPayload, int $userId): bool {
+        $this->pdo->beginTransaction();
+
+        try {
+            // 1. Pobierz instancję i dostępne przejścia
+            $stmt = $this->pdo->prepare("SELECT * FROM process_instances WHERE id = ?");
+            $stmt->execute([$instanceId]);
+            $instance = $stmt->fetch(PDO::FETCH_ASSOC);
+
+            if (!$instance) {
+                // Instancja nie znaleziona
+                $this->pdo->rollBack();
+                return false;
+            }
+
+            $availableTransitions = $this->getAvailableTransitions($instanceId);
+            
+            // 2. Sprawdź, czy przejście jest dozwolone
+            $selectedTransition = null;
+            if ($transitionId === 'note') { // Specjalny przypadek dodawania notatki
+                $selectedTransition = ['id' => 'note', 'name' => 'Dodano notatkę', 'target_status' => $instance['current_status']];
+            } else {
+                foreach ($availableTransitions as $trans) {
+                    if ($trans['id'] === $transitionId) {
+                        $selectedTransition = $trans;
+                        break;
+                    }
+                }
+            }
+
+            if (!$selectedTransition) {
+                // Nieprawidłowe lub niedozwolone przejście
+                $this->pdo->rollBack();
+                return false;
+            }
+
+            // 3. Utwórz zdarzenie
+            $eventType = ($transitionId === 'note') ? 'note' : 'transition_applied';
+            $message = $inputPayload['message'] ?? $selectedTransition['name'];
+            $this->addEvent($instanceId, $eventType, $message, null, $inputPayload, $userId);
+
+            // 4. Zaktualizuj instancję
+            $stmt_update = $this->pdo->prepare(
+                "UPDATE process_instances SET current_status = ?, lastActivityAt = CURRENT_TIMESTAMP WHERE id = ?"
+            );
+            $stmt_update->execute([$selectedTransition['target_status'], $instanceId]);
+
+            $this->pdo->commit();
+            return true;
+
+        } catch (Exception $e) {
+            $this->pdo->rollBack();
+            error_log("Błąd w applyTransition: " . $e->getMessage());
+            return false;
+        }
+    }
+
+    /**
+     * Masowa operacja stosowania tego samego przejścia do wielu osób dla danego procesu.
+     *
+     * @param string $processCode
+     * @param array $personIds
+     * @param string $transitionId
+     * @param array $inputPayload
+     * @param int $userId
+     * @return array Podsumowanie wyników (np. ['success' => count, 'failed' => count]).
+     */
+    public function bulkApplyTransition(string $processCode, array $personIds, string $transitionId, array $inputPayload, int $userId): array {
+        // 1. Upewnij się, że instancje istnieją dla wszystkich osób (użyj ensureInstances).
+        // 2. Przejdź przez pętlę personIds i wywołaj applyTransition dla każdej z nich.
+        // TODO: Implementacja logiki.
+        return ['success' => 0, 'failed' => 0];
+    }
+    
+    /**
+     * Zapewnia, że instancje procesów istnieją dla danego zestawu osób i kodów procesów.
+     * Jeśli instancja brakuje, zostanie utworzona.
+     *
+     * @param array $personIds
+     * @param array $processCodes
+     * @param int $userId
+     * @return array Podsumowanie utworzonych instancji.
+     */
+    public function ensureInstances(array $personIds, array $processCodes, int $userId): array {
+        // TODO: Implementacja logiki do tworzenia brakujących instancji.
+        return ['created' => 0];
+    }
+}
--- a/_add_bni_group.php
+++ b/_add_bni_group.php
@ -0,0 +1,32 @@
+<?php
+require_once __DIR__ . '/db/config.php';
+
+if (isset($_POST['add'])) {
+    $name = $_POST['name'];
+    $city = $_POST['city'] ?? null;
+    $active = isset($_POST['active']) ? 1 : 0;
+    $display_order = $_POST['display_order'] ?? 0;
+
+    if (empty($name)) {
+        $_SESSION['error_message'] = 'Name is required.';
+        header('Location: bni_groups.php');
+        exit;
+    }
+
+    try {
+        $pdo = db();
+        $stmt = $pdo->prepare("INSERT INTO bni_groups (name, city, active, display_order) VALUES (:name, :city, :active, :display_order)");
+        $stmt->bindParam(':name', $name);
+        $stmt->bindParam(':city', $city);
+        $stmt->bindParam(':active', $active, PDO::PARAM_INT);
+        $stmt->bindParam(':display_order', $display_order, PDO::PARAM_INT);
+        $stmt->execute();
+
+        $_SESSION['success_message'] = 'BNI Group added successfully!';
+    } catch (PDOException $e) {
+        $_SESSION['error_message'] = 'Error adding BNI group: ' . $e->getMessage();
+    }
+}
+
+header('Location: bni_groups.php');
+exit;
--- a/_add_calendar_event.php
+++ b/_add_calendar_event.php
@ -0,0 +1,88 @@
+<?php
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    header("Location: login.php");
+    exit();
+}
+
+require_once 'db/config.php';
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $title = $_POST['title'] ?? '';
+    $description = $_POST['description'] ?? '';
+    $start_datetime = $_POST['start_datetime'] ?? '';
+    $end_datetime = $_POST['end_datetime'] ?? '';
+    $event_type_id = $_POST['event_type_id'] ?? null;
+    $recurrence = $_POST['recurrence'] ?? '';
+    $recurrence_end_date = $_POST['recurrence_end_date'] ?? '';
+
+    if (empty($recurrence)) {
+        $recurrence = null;
+    }
+    if (empty($recurrence_end_date)) {
+        $recurrence_end_date = null;
+    }
+
+    if (empty($title) || empty($start_datetime) || empty($end_datetime) || empty($event_type_id)) {
+        header("Location: calendar.php?error=empty_fields");
+        exit();
+    }
+
+    $pdo = db();
+    
+    try {
+        $pdo->beginTransaction();
+
+        // Insert the main event
+        $stmt = $pdo->prepare("INSERT INTO calendar_events (title, description, start_datetime, end_datetime, event_type_id, recurrence, recurrence_end_date) VALUES (?, ?, ?, ?, ?, ?, ?)");
+        $stmt->execute([$title, $description, $start_datetime, $end_datetime, $event_type_id, $recurrence, $recurrence_end_date]);
+        $parent_event_id = $pdo->lastInsertId();
+
+        if ($recurrence && !empty($recurrence_end_date)) {
+            $start_date = new DateTime($start_datetime);
+            $end_date = new DateTime($end_datetime);
+            $recurrence_end = new DateTime($recurrence_end_date);
+            $interval_spec = '';
+
+            switch ($recurrence) {
+                case 'daily':
+                    $interval_spec = 'P1D';
+                    break;
+                case 'weekly':
+                    $interval_spec = 'P1W';
+                    break;
+                case 'monthly':
+                    $interval_spec = 'P1M';
+                    break;
+            }
+
+            if ($interval_spec) {
+                $interval = new DateInterval($interval_spec);
+                $period_start = clone $start_date;
+                $period_start->add($interval);
+ 
+                $period = new DatePeriod($period_start, $interval, $recurrence_end);
+
+                $stmt_recur = $pdo->prepare("INSERT INTO calendar_events (title, description, start_datetime, end_datetime, event_type_id, parent_event_id) VALUES (?, ?, ?, ?, ?, ?)");
+
+                foreach ($period as $date) {
+                    $new_start_datetime = $date->format('Y-m-d H:i:s');
+                    $end_date_clone = clone $date;
+                    $new_end_datetime = $end_date_clone->add($start_date->diff($end_date))->format('Y-m-d H:i:s');
+                    $stmt_recur->execute([$title, $description, $new_start_datetime, $new_end_datetime, $event_type_id, $parent_event_id]);
+                }
+            }
+        }
+
+        $pdo->commit();
+        header("Location: calendar.php");
+        exit();
+
+    } catch (Exception $e) {
+        $pdo->rollBack();
+        error_log($e->getMessage());
+        header("Location: calendar.php?error=db_error");
+        exit();
+    }
+}
--- a/_add_event_type.php
+++ b/_add_event_type.php
@ -0,0 +1,18 @@
+<?php
+require_once 'db/config.php';
+
+if (isset($_POST['add'])) {
+    $name = $_POST['name'];
+    $color = $_POST['color'];
+    $display_order = $_POST['display_order'];
+    
+    $pdo = db();
+    $stmt = $pdo->prepare("INSERT INTO event_types (name, color, display_order) VALUES (?, ?, ?)");
+    $stmt->execute([$name, $color, $display_order]);
+    
+    session_start();
+    $_SESSION['success_message'] = 'Event type added successfully.';
+    header('Location: event_types.php');
+    exit;
+}
+?>
--- a/_add_function.php
+++ b/_add_function.php
@ -0,0 +1,21 @@
+<?php
+session_start();
+if (!isset($_SESSION['user_id']) || $_SERVER['REQUEST_METHOD'] !== 'POST') {
+    header('Location: login.php');
+    exit();
+}
+
+include 'db/config.php';
+
+if (isset($_POST['name'])) {
+    $name = trim($_POST['name']);
+    $display_order = trim($_POST['display_order']);
+    if (!empty($name)) {
+        $pdo = db();
+        $stmt = $pdo->prepare("functions (name, display_order) VALUES (:name, :display_order)");
+        $stmt->execute(['name' => $name, 'display_order' => $display_order]);
+    }
+}
+
+header('Location: roles.php');
+exit();
--- a/_add_process_event.php
+++ b/_add_process_event.php
@ -0,0 +1,31 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    http_response_code(401);
+    die('Unauthorized');
+}
+
+$pdo = db();
+$instanceId = $_POST['instanceId'] ?? null;
+$eventType = $_POST['eventType'] ?? null;
+$description = $_POST['description'] ?? null;
+$userId = $_SESSION['user_id'];
+
+if (!$instanceId || !$eventType) {
+    http_response_code(400);
+    die('Missing parameters');
+}
+
+// Create the event
+$stmt = $pdo->prepare("INSERT INTO process_events (processInstanceId, eventType, description, createdBy) VALUES (?, ?, ?, ?)");
+$stmt->execute([$instanceId, $eventType, $description, $userId]);
+
+// Update the last activity time for the instance
+$stmt_update = $pdo->prepare("UPDATE process_instances SET lastActivityAt = NOW() WHERE id = ?");
+$stmt_update->execute([$instanceId]);
+
+// Redirect back to the dashboard
+header("Location: process_dashboard.php");
+exit;
--- a/_apply_transition.php
+++ b/_apply_transition.php
@ -0,0 +1,43 @@
+<?php
+session_start();
+
+if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+    header('Location: process_dashboard.php');
+    exit;
+}
+
+require_once 'WorkflowEngine.php';
+
+if (!isset($_POST['instanceId']) || !isset($_POST['transitionId'])) {
+    $_SESSION['flash_message'] = ['type' => 'danger', 'message' => 'Błąd: Brak wymaganych parametrów.'];
+    header('Location: process_dashboard.php');
+    exit;
+}
+
+$instanceId = (int)$_POST['instanceId'];
+$transitionId = $_POST['transitionId'];
+$userId = $_SESSION['user_id'] ?? null;
+$payload = $_POST['payload'] ?? null;
+
+if (!$userId) {
+    $_SESSION['flash_message'] = ['type' => 'danger', 'message' => 'Błąd: Sesja wygasła.'];
+    header('Location: login.php');
+    exit;
+}
+
+try {
+    $engine = new WorkflowEngine();
+    $success = $engine->applyTransition($instanceId, $transitionId, $payload, $userId);
+
+    if ($success) {
+        $_SESSION['flash_message'] = ['type' => 'success', 'message' => 'Akcja została wykonana pomyślnie.'];
+    } else {
+        $_SESSION['flash_message'] = ['type' => 'danger', 'message' => 'Błąd: Nie udało się wykonać akcji.'];
+    }
+} catch (Exception $e) {
+    error_log("Error applying transition: " . $e->getMessage());
+    $_SESSION['flash_message'] = ['type' => 'danger', 'message' => 'Wystąpił krytyczny błąd: ' . $e->getMessage()];
+}
+
+header('Location: process_dashboard.php');
+exit;
--- a/_bulk_add_event.php
+++ b/_bulk_add_event.php
@ -0,0 +1,53 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    http_response_code(401);
+    die('Unauthorized');
+}
+
+$pdo = db();
+$person_ids = json_decode($_POST['person_ids'] ?? '[]');
+$process_id = $_POST['process_id'] ?? null;
+$message = $_POST['description'] ?? null; // The form sends 'description'
+$userId = $_SESSION['user_id'];
+
+if (empty($person_ids) || !$process_id || !$message) {
+    http_response_code(400);
+    die('Missing parameters');
+}
+
+$placeholders = implode(',', array_fill(0, count($person_ids), '?'));
+
+// Get all relevant instance IDs
+$stmt = $pdo->prepare("SELECT id FROM process_instances WHERE processDefinitionId = ? AND personId IN ($placeholders)");
+$params = array_merge([$process_id], $person_ids);
+$stmt->execute($params);
+$instance_ids = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+if (!empty($instance_ids)) {
+    $instance_placeholders = implode(',', array_fill(0, count($instance_ids), '?'));
+
+    // Update last activity
+    $stmt_update = $pdo->prepare("UPDATE process_instances SET lastActivityAt = NOW() WHERE id IN ($instance_placeholders)");
+    $stmt_update->execute($instance_ids);
+
+    // Bulk insert events
+    $event_sql = "INSERT INTO process_events (processInstanceId, event_type, message, createdById) VALUES ";
+    $event_rows = [];
+    $event_params = [];
+    foreach($instance_ids as $instance_id) {
+        $event_rows[] = "(?, 'note', ?, ?)";
+        $event_params[] = $instance_id;
+        $event_params[] = $message;
+        $event_params[] = $userId;
+    }
+    $event_sql .= implode(', ', $event_rows);
+    $stmt_event = $pdo->prepare($event_sql);
+    $stmt_event->execute($event_params);
+}
+
+$_SESSION['flash_message'] = "Bulk event addition completed.";
+header('Location: process_dashboard.php');
+exit;
--- a/_bulk_init_instances.php
+++ b/_bulk_init_instances.php
@ -0,0 +1,33 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    http_response_code(401);
+    die('Unauthorized');
+}
+
+$pdo = db();
+$person_ids = json_decode($_POST['person_ids'] ?? '[]');
+$process_id = $_POST['process_id'] ?? null;
+
+if (empty($person_ids) || !$process_id) {
+    http_response_code(400);
+    die('Missing parameters');
+}
+
+$sql = "INSERT IGNORE INTO process_instances (personId, processDefinitionId, current_status) VALUES ";
+$rows = [];
+$params = [];
+foreach($person_ids as $person_id) {
+    $rows[] = "(?, ?, 'none')";
+    $params[] = $person_id;
+    $params[] = $process_id;
+}
+$sql .= implode(', ', $rows);
+$stmt = $pdo->prepare($sql);
+$stmt->execute($params);
+
+$_SESSION['flash_message'] = "Bulk initialization completed.";
+header('Location: process_dashboard.php');
+exit;
--- a/_bulk_update_status.php
+++ b/_bulk_update_status.php
@ -0,0 +1,54 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    http_response_code(401);
+    die('Unauthorized');
+}
+
+$pdo = db();
+$person_ids = json_decode($_POST['person_ids'] ?? '[]');
+$process_id = $_POST['process_id'] ?? null;
+$status = $_POST['status'] ?? null;
+$userId = $_SESSION['user_id'];
+
+if (empty($person_ids) || !$process_id || !$status) {
+    http_response_code(400);
+    die('Missing parameters');
+}
+
+$placeholders = implode(',', array_fill(0, count($person_ids), '?'));
+
+// Get all relevant instance IDs
+$stmt = $pdo->prepare("SELECT id FROM process_instances WHERE processDefinitionId = ? AND personId IN ($placeholders)");
+$params = array_merge([$process_id], $person_ids);
+$stmt->execute($params);
+$instance_ids = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+if (!empty($instance_ids)) {
+    $instance_placeholders = implode(',', array_fill(0, count($instance_ids), '?'));
+
+    // Update statuses
+    $stmt_update = $pdo->prepare("UPDATE process_instances SET current_status = ?, lastActivityAt = NOW() WHERE id IN ($instance_placeholders)");
+    $stmt_update->execute(array_merge([$status], $instance_ids));
+
+    // Bulk insert events
+    $event_sql = "INSERT INTO process_events (processInstanceId, event_type, message, createdById) VALUES ";
+    $event_rows = [];
+    $event_params = [];
+    $message = "Status changed to $status";
+    foreach($instance_ids as $instance_id) {
+        $event_rows[] = "(?, 'status_change', ?, ?)";
+        $event_params[] = $instance_id;
+        $event_params[] = $message;
+        $event_params[] = $userId;
+    }
+    $event_sql .= implode(', ', $event_rows);
+    $stmt_event = $pdo->prepare($event_sql);
+    $stmt_event->execute($event_params);
+}
+
+$_SESSION['flash_message'] = "Bulk status update completed.";
+header('Location: process_dashboard.php');
+exit;
--- a/_create_person.php
+++ b/_create_person.php
@ -0,0 +1,53 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $firstName = $_POST['firstName'];
+    $lastName = $_POST['lastName'];
+    $email = $_POST['email'];
+    $password = $_POST['password'];
+    $companyName = $_POST['companyName'] ?? null;
+    $phone = $_POST['phone'] ?? null;
+    $role = $_POST['role'] ?? 'członek'; // Default to 'członek'
+    $functions = isset($_POST['functions']) ? $_POST['functions'] : [];
+
+    if (empty($firstName) || empty($lastName) || empty($email) || empty($password)) {
+        $_SESSION['error_message'] = 'Imię, nazwisko, email i hasło są wymagane.';
+        header('Location: index.php');
+        exit;
+    }
+
+    try {
+        $pdo = db();
+
+        // Insert person details
+        $sql = 'INSERT INTO people (firstName, lastName, email, password, companyName, phone, role) VALUES (?, ?, ?, ?, ?, ?, ?)';
+        $stmt = $pdo->prepare($sql);
+        $stmt->execute([$firstName, $lastName, $email, password_hash($password, PASSWORD_DEFAULT), $companyName, $phone, $role]);
+        $personId = $pdo->lastInsertId();
+
+        // Assign functions
+        if (!empty($functions)) {
+            $sql = "INSERT INTO user_functions (user_id, function_id) VALUES (?, ?)";
+            $stmt = $pdo->prepare($sql);
+            foreach ($functions as $functionId) {
+                $stmt->execute([$personId, $functionId]);
+            }
+        }
+
+        $_SESSION['success_message'] = 'Osoba dodana pomyślnie.';
+
+    } catch (PDOException $e) {
+        error_log('Create failed: ' . $e->getMessage());
+        if ($e->errorInfo[1] == 1062) {
+            $_SESSION['error_message'] = 'Błąd: Konto z tym adresem email już istnieje.';
+        } else {
+            $_SESSION['error_message'] = 'Błąd podczas dodawania osoby.';
+        }
+    }
+
+    header('Location: index.php');
+    exit();
+}
+?>
--- a/_delete_bni_group.php
+++ b/_delete_bni_group.php
@ -0,0 +1,20 @@
+<?php
+require_once __DIR__ . '/db/config.php';
+
+if (isset($_GET['id'])) {
+    $id = $_GET['id'];
+
+    try {
+        $pdo = db();
+        $stmt = $pdo->prepare("DELETE FROM bni_groups WHERE id = :id");
+        $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+        $stmt->execute();
+
+        $_SESSION['success_message'] = 'BNI Group deleted successfully!';
+    } catch (PDOException $e) {
+        $_SESSION['error_message'] = 'Error deleting BNI group: ' . $e->getMessage();
+    }
+}
+
+header('Location: bni_groups.php');
+exit;
--- a/_delete_calendar_event.php
+++ b/_delete_calendar_event.php
@ -0,0 +1,48 @@
+<?php
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    header("Location: login.php");
+    exit();
+}
+
+require_once 'db/config.php';
+
+if (isset($_GET['id'])) {
+    $event_id = $_GET['id'];
+    $pdo = db();
+
+    try {
+        $pdo->beginTransaction();
+
+        // Check if the event is a parent event
+        $stmt = $pdo->prepare("SELECT parent_event_id FROM calendar_events WHERE id = ?");
+        $stmt->execute([$event_id]);
+        $event = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if ($event) {
+            if ($event['parent_event_id'] === null) {
+                // It's a parent event, delete it and all its children
+                $stmt_delete_children = $pdo->prepare("DELETE FROM calendar_events WHERE parent_event_id = ?");
+                $stmt_delete_children->execute([$event_id]);
+            }
+
+            // Delete the event itself
+            $stmt_delete = $pdo->prepare("DELETE FROM calendar_events WHERE id = ?");
+            $stmt_delete->execute([$event_id]);
+        }
+
+        $pdo->commit();
+        header("Location: calendar.php");
+        exit();
+
+    } catch (Exception $e) {
+        $pdo->rollBack();
+        error_log($e->getMessage());
+        header("Location: calendar.php?error=db_error");
+        exit();
+    }
+} else {
+    header("Location: calendar.php");
+    exit();
+}
--- a/_delete_event_type.php
+++ b/_delete_event_type.php
@ -0,0 +1,16 @@
+<?php
+require_once 'db/config.php';
+
+if (isset($_GET['id'])) {
+    $id = $_GET['id'];
+    
+    $pdo = db();
+    $stmt = $pdo->prepare("DELETE FROM event_types WHERE id = ?");
+    $stmt->execute([$id]);
+    
+    session_start();
+    $_SESSION['success_message'] = 'Event type deleted successfully.';
+    header('Location: event_types.php');
+    exit;
+}
+?>
--- a/_delete_function.php
+++ b/_delete_function.php
@ -0,0 +1,21 @@
+<?php
+session_start();
+if (!isset($_SESSION['user_id']) || !isset($_GET['id'])) {
+    header('Location: login.php');
+    exit();
+}
+
+include 'db/config.php';
+
+$id = $_GET['id'];
+
+$pdo = db();
+$stmt = $pdo->prepare("DELETE FROM functions WHERE id = :id");
+$stmt->execute(['id' => $id]);
+
+// Optional: Also delete user_functions associated with this function
+$stmt = $pdo->prepare("DELETE FROM user_functions WHERE function_id = :function_id");
+$stmt->execute(['function_id' => $id]);
+
+header('Location: functions.php');
+exit();
--- a/_delete_person.php
+++ b/_delete_person.php
@ -0,0 +1,16 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if (isset($_GET['id'])) {
+    $id = $_GET['id'];
+    
+    $pdo = db();
+    $stmt = $pdo->prepare("DELETE FROM people WHERE id = ?");
+    $stmt->execute([$id]);
+    
+    $_SESSION['success_message'] = 'Osoba usunięta pomyślnie.';
+    header('Location: persons.php');
+    exit;
+}
+?>
--- a/_footer.php
+++ b/_footer.php
@ -0,0 +1,28 @@
+    <!-- Bootstrap Bundle with Popper -->
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+    <!-- jQuery -->
+    <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
+    <!-- jQuery UI -->
+    <script src="https://code.jquery.com/ui/1.13.2/jquery-ui.min.js"></script>
+    <link rel="stylesheet" href="https://code.jquery.com/ui/1.13.2/themes/base/jquery-ui.css">
+
+    <!-- Custom JS -->
+    <script src="assets/js/main.js?v=<?php echo time(); ?>"></script>
+
+    <script>
+        document.addEventListener('DOMContentLoaded', function() {
+            const sidebarLinks = document.querySelectorAll('#sidebar .nav-link');
+            const currentPath = window.location.pathname.split('/').pop();
+
+            sidebarLinks.forEach(link => {
+                const linkPath = link.getAttribute('href').split('/').pop();
+                if (linkPath === currentPath) {
+                    link.classList.add('active');
+                } else {
+                    link.classList.remove('active');
+                }
+            });
+        });
+    </script>
+</body>
+</html>
--- a/_get_event_details.php
+++ b/_get_event_details.php
@ -0,0 +1,26 @@
+<?php
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    header("HTTP/1.1 401 Unauthorized");
+    exit();
+}
+
+require_once 'db/config.php';
+
+if (isset($_GET['id'])) {
+    $event_id = $_GET['id'];
+    $pdo = db();
+    $stmt = $pdo->prepare("SELECT c.*, t.name as type_name FROM calendar_events c LEFT JOIN event_types t ON c.event_type_id = t.id WHERE c.id = ?");
+    $stmt->execute([$event_id]);
+    $event = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if ($event) {
+        header('Content-Type: application/json');
+        echo json_encode($event);
+    } else {
+        header("HTTP/1.1 404 Not Found");
+    }
+} else {
+    header("HTTP/1.1 400 Bad Request");
+}
--- a/_get_instance_details.php
+++ b/_get_instance_details.php
@ -0,0 +1,88 @@
+<?php
+require_once 'WorkflowEngine.php';
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    http_response_code(401);
+    die('Brak autoryzacji');
+}
+
+$personId = $_GET['personId'] ?? null;
+$processDefinitionId = $_GET['processId'] ?? null; // Pulpit wysyła processId, który jest ID definicji
+
+if (!$personId || !$processDefinitionId) {
+    http_response_code(400);
+    die('Brakujące parametry');
+}
+
+$userId = $_SESSION['user_id'];
+$engine = new WorkflowEngine();
+
+// 1. Pobierz lub utwórz instancję
+$instance = $engine->getOrCreateInstanceByDefId($personId, $processDefinitionId, $userId);
+if (!$instance) {
+    http_response_code(500);
+    die('Nie można pobrać lub utworzyć instancji procesu.');
+}
+$instanceId = $instance['id'];
+
+// 2. Pobierz powiązane dane przez silnik
+$events = $engine->getEvents($instanceId);
+$availableTransitions = $engine->getAvailableTransitions($instanceId);
+
+// 3. Pobierz nazwy do wyświetlenia
+$pdo = db();
+$stmt_person = $pdo->prepare("SELECT firstName, lastName FROM people WHERE id = ?");
+$stmt_person->execute([$personId]);
+$person = $stmt_person->fetch();
+
+$stmt_process = $pdo->prepare("SELECT name FROM process_definitions WHERE id = ?");
+$stmt_process->execute([$processDefinitionId]);
+$process = $stmt_process->fetch();
+?>
+
+<h4><?= htmlspecialchars($person['firstName'] . ' ' . $person['lastName']) ?> - <?= htmlspecialchars($process['name']) ?></h4>
+<p>Status: <span class="badge bg-secondary"><?= htmlspecialchars($instance['current_status']) ?></span></p>
+<hr>
+
+<h5>Wykonaj akcję</h5>
+<form action="_apply_transition.php" method="post">
+    <input type="hidden" name="instanceId" value="<?= $instanceId ?>">
+    <div class="mb-3">
+        <label for="transitionSelect" class="form-label">Akcja</label>
+        <select name="transitionId" id="transitionSelect" class="form-select" required>
+            <option value="" disabled selected>-- Wybierz akcję --</option>
+            <?php foreach ($availableTransitions as $transition): ?>
+                <option value="<?= $transition['id'] ?>"><?= htmlspecialchars($transition['name']) ?></option>
+            <?php endforeach; ?>
+             <option value="note">Dodaj notatkę</option> <!-- Specjalny przypadek -->
+        </select>
+    </div>
+    <div class="mb-3">
+        <label for="payloadMessage" class="form-label">Notatka / Wiadomość (opcjonalnie)</label>
+        <textarea name="payload[message]" id="payloadMessage" class="form-control" rows="3"></textarea>
+    </div>
+    <button type="submit" class="btn btn-primary">Zatwierdź</button>
+</form>
+
+<hr>
+
+<h5>Historia</h5>
+<?php if (empty($events)): ?>
+    <p>Brak zdarzeń.</p>
+<?php else: ?>
+    <ul class="list-group">
+        <?php foreach ($events as $event): ?>
+        <li class="list-group-item">
+            <strong><?= htmlspecialchars(ucfirst(str_replace('_', ' ', $event['event_type']))) ?></strong>
+            <?php if (!empty($event['message'])):
+                $payload = json_decode($event['payload_json'], true);
+                $message = $payload['message'] ?? $event['message'];
+            ?>
+                <p class="mb-1"><?= htmlspecialchars($message) ?></p>
+            <?php endif; ?>
+            <small class="text-muted">Przez <?= htmlspecialchars($event['firstName'] . ' ' . $event['lastName']) ?> dnia <?= date('d.m.Y, H:i', strtotime($event['createdAt'])) ?></small>
+        </li>
+        <?php endforeach; ?>
+    </ul>
+<?php endif; ?>
--- a/_get_person_details.php
+++ b/_get_person_details.php
@ -0,0 +1,32 @@
+<?php
+require_once 'db/config.php';
+
+if (isset($_GET['id'])) {
+    $person_id = $_GET['id'];
+    $pdo = db();
+
+    // Fetch person details
+    $stmt = $pdo->prepare("SELECT * FROM people WHERE id = ?");
+    $stmt->execute([$person_id]);
+    $person = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    // Fetch all functions
+    $stmt = $pdo->query("SELECT id, name FROM functions ORDER BY display_order");
+    $all_functions = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    // Fetch person's functions
+    $stmt = $pdo->prepare("SELECT function_id FROM user_functions WHERE user_id = ?");
+    $stmt->execute([$person_id]);
+    $person_functions = $stmt->fetchAll(PDO::FETCH_COLUMN, 0);
+
+    $response = [
+        'person' => $person,
+        'all_functions' => $all_functions,
+        'person_functions' => $person_functions
+    ];
+
+    header('Content-Type: application/json');
+    echo json_encode($response);
+    exit;
+}
+?>
--- a/_header.php
+++ b/_header.php
@ -0,0 +1,44 @@
+<?php
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    header('Location: login.php');
+    exit;
+}
+?>
+<!doctype html>
+<html lang="en">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title><?php echo getenv('PROJECT_NAME') ?: 'My App'; ?> - Dashboard</title>
+    <meta name="description" content="<?php echo getenv('PROJECT_DESCRIPTION') ?: 'A modern web application.'; ?>">
+    
+    <!-- Bootstrap CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <!-- Bootstrap Icons -->
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css">
+    
+    <!-- Google Fonts -->
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
+
+    <!-- Custom CSS -->
+    <link rel="stylesheet" href="assets/css/custom.css?v=<?php echo time(); ?>">
+
+    <!-- OG Meta Tags -->
+    <meta property="og:title" content="<?php echo getenv('PROJECT_NAME') ?: 'My App'; ?>">
+    <meta property="og:description" content="<?php echo getenv('PROJECT_DESCRIPTION') ?: 'A modern web application.'; ?>">
+    <meta property="og:image" content="<?php echo getenv('PROJECT_IMAGE_URL') ?: 'https://via.placeholder.com/1200x630.png?text=Visit+My+App'; ?>">
+    <meta property="og:url" content="<?php echo (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]"; ?>">
+    <meta property="og:type" content="website">
+
+    <!-- Twitter Card -->
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="<?php echo getenv('PROJECT_NAME') ?: 'My App'; ?>">
+    <meta name="twitter:description" content="<?php echo getenv('PROJECT_DESCRIPTION') ?: 'A modern web application.'; ?>">
+    <meta name="twitter:image" content="<?php echo getenv('PROJECT_IMAGE_URL') ?: 'https://via.placeholder.com/1200x630.png?text=Visit+My+App'; ?>">
+
+</head>
+<body>
--- a/_init_instances.php
+++ b/_init_instances.php
@ -0,0 +1,37 @@
+<?php
+require_once 'db/config.php';
+
+session_start();
+if (!isset($_SESSION['user_id'])) {
+    header('Location: login.php');
+    exit;
+}
+
+$pdo = db();
+
+// Get all active people
+$stmt_people = $pdo->prepare("SELECT id FROM people WHERE active = 1");
+$stmt_people->execute();
+$people = $stmt_people->fetchAll(PDO::FETCH_COLUMN);
+
+// Get all active process definitions
+$stmt_processes = $pdo->prepare("SELECT id FROM process_definitions WHERE is_active = 1");
+$stmt_processes->execute();
+$processes = $stmt_processes->fetchAll(PDO::FETCH_COLUMN);
+
+$insert_stmt = $pdo->prepare("INSERT IGNORE INTO process_instances (personId, processDefinitionId, current_status) VALUES (?, ?, 'none')");
+
+$count = 0;
+foreach ($people as $personId) {
+    foreach ($processes as $processId) {
+        $insert_stmt->execute([$personId, $processId]);
+        if ($insert_stmt->rowCount() > 0) {
+            $count++;
+        }
+    }
+}
+
+$_SESSION['flash_message'] = "Initialized $count new process instances.";
+
+header("Location: process_dashboard.php"); // Redirect to the main dashboard
+exit;
--- a/_navbar.php
+++ b/_navbar.php
@ -0,0 +1,16 @@
+    <nav class="navbar navbar-dark sticky-top bg-dark flex-md-nowrap p-0 shadow">
+        <a class="navbar-brand col-md-3 col-lg-2 me-0 px-3" href="#"><?php echo getenv('PROJECT_NAME') ?: 'My App'; ?></a>
+        <button class="navbar-toggler position-absolute d-md-none collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#sidebarMenu" aria-controls="sidebarMenu" aria-expanded="false" aria-label="Toggle navigation">
+            <span class="navbar-toggler-icon"></span>
+        </button>
+        <ul class="navbar-nav flex-row px-3">
+            <?php if (isset($_SESSION['user_name'])): ?>
+            <li class="nav-item text-nowrap">
+                <span class="nav-link">Witaj, <?= htmlspecialchars($_SESSION['user_name']) ?></span>
+            </li>
+            <?php endif; ?>
+            <li class="nav-item text-nowrap ms-2">
+                <a class="nav-link" href="logout.php">Wyloguj</a>
+            </li>
+        </ul>
+    </nav>
--- a/_save_process_definition.php
+++ b/_save_process_definition.php
@ -0,0 +1,49 @@
+<?php
+require_once 'db/config.php';
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $processId = $_POST['process_id'] ?? null;
+    $name = $_POST['name'];
+    $definition_json = $_POST['definition_json'];
+
+    if (empty($name)) {
+        die('Process name is required.');
+    }
+
+    // Validate JSON
+    if (!empty($definition_json)) {
+        json_decode($definition_json);
+        if (json_last_error() !== JSON_ERROR_NONE) {
+            die('Invalid JSON format in definition.');
+        }
+    }
+
+    try {
+        $pdo = db();
+
+        if (empty($processId)) {
+            // Create new process
+            $sql = 'INSERT INTO process_definitions (name, definition_json) VALUES (?, ?)';
+            $params = [$name, $definition_json];
+            $message = 'Process created successfully.';
+        } else {
+            // Update existing process
+            $sql = 'UPDATE process_definitions SET name = ?, definition_json = ? WHERE id = ?';
+            $params = [$name, $definition_json, $processId];
+            $message = 'Process updated successfully.';
+        }
+
+        $stmt = $pdo->prepare($sql);
+        $stmt->execute($params);
+
+        session_start();
+        $_SESSION['success_message'] = $message;
+
+    } catch (PDOException $e) {
+        error_log('Save process definition failed: ' . $e->getMessage());
+        die('Save process definition failed. Please check the logs.');
+    }
+
+    header('Location: process_definitions.php');
+    exit();
+}
--- a/_sidebar.php
+++ b/_sidebar.php
@ -0,0 +1,56 @@
+<?php $current_page = basename($_SERVER['PHP_SELF']); ?>
+            <nav id="sidebar" class="col-md-3 col-lg-2 d-md-block bg-light sidebar collapse">
+                <div class="position-sticky pt-3">
+                    <ul class="nav flex-column">
+                        <li class="nav-item">
+                            <a class="nav-link <?= ($current_page == 'index.php' || $current_page == '') ? 'active' : '' ?>" aria-current="page" href="/">
+                                <i class="bi bi-kanban"></i>
+                                <span class="nav-link-text">Pulpit procesów</span>
+                            </a>
+                        </li>
+                        <li class="nav-item">
+                            <a class="nav-link <?= ($current_page == 'calendar.php') ? 'active' : '' ?>" href="calendar.php">
+                                <i class="bi bi-calendar-event"></i>
+                                <span class="nav-link-text">Kalendarz</span>
+                            </a>
+                        </li>
+
+                        <li class="nav-item">
+                            <a class="nav-link collapsed" href="#settings-submenu" data-bs-toggle="collapse" aria-expanded="false">
+                                <i class="bi bi-gear"></i>
+                                <span class="nav-link-text">Ustawienia</span>
+                            </a>
+                            <ul class="nav flex-column collapse" id="settings-submenu" data-bs-parent="#sidebar">
+                                <li class="nav-item submenu-item">
+                                    <a class="nav-link <?= ($current_page == 'event_types.php') ? 'active' : '' ?>" href="event_types.php">
+                                        <i class="bi bi-tags"></i>
+                                        <span class="nav-link-text">Typy zdarzeń</span>
+                                    </a>
+                                </li>
+                                <li class="nav-item submenu-item">
+                                    <a class="nav-link <?= ($current_page == 'bni_groups.php') ? 'active' : '' ?>" href="bni_groups.php">
+                                        <i class="bi bi-people"></i>
+                                        <span class="nav-link-text">Grupy BNI</span>
+                                    </a>
+                                </li>
+                                <li class="nav-item submenu-item">
+                                    <a class="nav-link <?= ($current_page == 'functions.php') ? 'active' : '' ?>" href="functions.php">
+                                        <i class="bi bi-person-rolodex"></i>
+                                        <span class="nav-link-text">Funkcje</span>
+                                    </a>
+                                </li>
+                            </ul>
+                        </li>
+
+                        <?php if (isset($_SESSION['role']) && $_SESSION['role'] === 'admin'): ?>
+                        <li class="nav-item">
+                            <a class="nav-link <?= ($current_page == 'process_definitions.php') ? 'active' : '' ?>" href="process_definitions.php">
+                                <i class="bi bi-diagram-3"></i>
+                                <span class="nav-link-text">Definicje procesów</span>
+                            </a>
+                        </li>
+                        <?php endif; ?>
+
+                    </ul>
+                </div>
+            </nav>
--- a/_update_bni_group.php
+++ b/_update_bni_group.php
@ -0,0 +1,34 @@
+<?php
+require_once __DIR__ . '/db/config.php';
+
+if (isset($_POST['edit'])) {
+    $id = $_POST['id'];
+    $name = $_POST['name'];
+    $city = $_POST['city'] ?? null;
+    $active = isset($_POST['active']) ? 1 : 0;
+    $display_order = $_POST['display_order'] ?? 0;
+
+    if (empty($name) || empty($id)) {
+        $_SESSION['error_message'] = 'Name and ID are required.';
+        header('Location: bni_groups.php');
+        exit;
+    }
+
+    try {
+        $pdo = db();
+        $stmt = $pdo->prepare("UPDATE bni_groups SET name = :name, city = :city, active = :active, display_order = :display_order WHERE id = :id");
+        $stmt->bindParam(':id', $id, PDO::PARAM_INT);
+        $stmt->bindParam(':name', $name);
+        $stmt->bindParam(':city', $city);
+        $stmt->bindParam(':active', $active, PDO::PARAM_INT);
+        $stmt->bindParam(':display_order', $display_order, PDO::PARAM_INT);
+        $stmt->execute();
+
+        $_SESSION['success_message'] = 'BNI Group updated successfully!';
+    } catch (PDOException $e) {
+        $_SESSION['error_message'] = 'Error updating BNI group: ' . $e->getMessage();
+    }
+}
+
+header('Location: bni_groups.php');
+exit;
--- a/_update_bni_group_order.php
+++ b/_update_bni_group_order.php
@ -0,0 +1,67 @@
+<?php
+require_once 'db/config.php';
+
+session_start();
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    if (isset($_POST['order']) && is_array($_POST['order'])) {
+        $ordered_ids = $_POST['order'];
+
+        $pdo = db();
+        $pdo->beginTransaction();
+
+        try {
+            foreach ($ordered_ids as $index => $id) {
+                $sql = "UPDATE bni_groups SET display_order = ? WHERE id = ?";
+                $stmt = $pdo->prepare($sql);
+                $stmt->execute([$index + 1, $id]);
+            }
+            $pdo->commit();
+            header('Content-Type: application/json');
+            echo json_encode(['success' => true, 'message' => 'Order updated successfully.']);
+            exit();
+
+        } catch (PDOException $e) {
+            $pdo->rollBack();
+            header('Content-Type: application/json');
+            http_response_code(500);
+            echo json_encode(['success' => false, 'message' => 'Error updating display order: ' . $e->getMessage()]);
+            exit();
+        }
+    }
+}
+
+// Fallback for old form submission, though it's being deprecated
+if (isset($_POST['ids']) && isset($_POST['display_order'])) {
+    $ids = $_POST['ids'];
+    $display_orders = $_POST['display_order'];
+
+    if (count($ids) !== count($display_orders)) {
+        $_SESSION['error_message'] = "Something went wrong. Please try again.";
+        header("Location: bni_groups.php");
+        exit();
+    }
+
+    $pdo = db();
+    $pdo->beginTransaction();
+
+    try {
+        for ($i = 0; $i < count($ids); $i++) {
+            $sql = "UPDATE bni_groups SET display_order = ? WHERE id = ?";
+            $stmt = $pdo->prepare($sql);
+            $stmt->execute([$display_orders[$i], $ids[$i]]);
+        }
+        $pdo->commit();
+        $_SESSION['success_message'] = "Display order updated successfully.";
+    } catch (PDOException $e) {
+        $pdo->rollBack();
+        $_SESSION['error_message'] = "Error updating display order: " . $e->getMessage();
+    }
+
+    header("Location: bni_groups.php");
+    exit();
+}
+
+http_response_code(400);
+header('Content-Type: application/json');
+echo json_encode(['success' => false, 'message' => 'Invalid request.']);
--- a/_update_calendar_event.php
+++ b/_update_calendar_event.php
@ -0,0 +1,40 @@
+<?php
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    header("Location: login.php");
+    exit();
+}
+
+require_once 'db/config.php';
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $event_id = $_POST['event_id'] ?? null;
+    $title = $_POST['title'] ?? '';
+    $description = $_POST['description'] ?? '';
+    $start_datetime = $_POST['start_datetime'] ?? '';
+    $end_datetime = $_POST['end_datetime'] ?? '';
+    $event_type_id = $_POST['event_type_id'] ?? null;
+
+    // For now, we don't support updating recurring events.
+    // This will be implemented in the future.
+
+    if (empty($event_id) || empty($title) || empty($start_datetime) || empty($end_datetime) || empty($event_type_id)) {
+        header("Location: calendar.php?error=empty_fields");
+        exit();
+    }
+
+    $pdo = db();
+    $stmt = $pdo->prepare("UPDATE calendar_events SET title = ?, description = ?, start_datetime = ?, end_datetime = ?, event_type_id = ? WHERE id = ?");
+    
+    try {
+        $stmt->execute([$title, $description, $start_datetime, $end_datetime, $event_type_id, $event_id]);
+        header("Location: calendar.php");
+        exit();
+    } catch (PDOException $e) {
+        // Handle database error
+        error_log($e->getMessage());
+        header("Location: calendar.php?error=db_error");
+        exit();
+    }
+}
--- a/_update_event_type.php
+++ b/_update_event_type.php
@ -0,0 +1,19 @@
+<?php
+require_once 'db/config.php';
+
+if (isset($_POST['edit'])) {
+    $id = $_POST['id'];
+    $name = $_POST['name'];
+    $color = $_POST['color'];
+    $display_order = $_POST['display_order'];
+    
+    $pdo = db();
+    $stmt = $pdo->prepare("UPDATE event_types SET name = ?, color = ?, display_order = ? WHERE id = ?");
+    $stmt->execute([$name, $color, $display_order, $id]);
+    
+    session_start();
+    $_SESSION['success_message'] = 'Event type updated successfully.';
+    header('Location: event_types.php');
+    exit;
+}
+?>
--- a/_update_event_type_order.php
+++ b/_update_event_type_order.php
@ -0,0 +1,67 @@
+<?php
+require_once 'db/config.php';
+
+session_start();
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    if (isset($_POST['order']) && is_array($_POST['order'])) {
+        $ordered_ids = $_POST['order'];
+
+        $pdo = db();
+        $pdo->beginTransaction();
+
+        try {
+            foreach ($ordered_ids as $index => $id) {
+                $sql = "UPDATE event_types SET display_order = ? WHERE id = ?";
+                $stmt = $pdo->prepare($sql);
+                $stmt->execute([$index + 1, $id]);
+            }
+            $pdo->commit();
+            header('Content-Type: application/json');
+            echo json_encode(['success' => true, 'message' => 'Order updated successfully.']);
+            exit();
+
+        } catch (PDOException $e) {
+            $pdo->rollBack();
+            header('Content-Type: application/json');
+            http_response_code(500);
+            echo json_encode(['success' => false, 'message' => 'Error updating display order: ' . $e->getMessage()]);
+            exit();
+        }
+    }
+}
+
+// Fallback for old form submission, though it's being deprecated
+if (isset($_POST['ids']) && isset($_POST['display_order'])) {
+    $ids = $_POST['ids'];
+    $display_orders = $_POST['display_order'];
+
+    if (count($ids) !== count($display_orders)) {
+        $_SESSION['error_message'] = "Something went wrong. Please try again.";
+        header("Location: event_types.php");
+        exit();
+    }
+
+    $pdo = db();
+    $pdo->beginTransaction();
+
+    try {
+        for ($i = 0; $i < count($ids); $i++) {
+            $sql = "UPDATE event_types SET display_order = ? WHERE id = ?";
+            $stmt = $pdo->prepare($sql);
+            $stmt->execute([$display_orders[$i], $ids[$i]]);
+        }
+        $pdo->commit();
+        $_SESSION['success_message'] = "Display order updated successfully.";
+    } catch (PDOException $e) {
+        $pdo->rollBack();
+        $_SESSION['error_message'] = "Error updating display order: " . $e->getMessage();
+    }
+
+    header("Location: event_types.php");
+    exit();
+}
+
+http_response_code(400);
+header('Content-Type: application/json');
+echo json_encode(['success' => false, 'message' => 'Invalid request.']);
--- a/_update_function.php
+++ b/_update_function.php
@ -0,0 +1,23 @@
+<?php
+session_start();
+if (!isset($_SESSION['user_id']) || $_SERVER['REQUEST_METHOD'] !== 'POST') {
+    header('Location: login.php');
+    exit();
+}
+
+include 'db/config.php';
+
+if (isset($_POST['id'], $_POST['name'])) {
+    $id = $_POST['id'];
+    $name = trim($_POST['name']);
+    $display_order = trim($_POST['display_order']);
+
+    if (!empty($name)) {
+        $pdo = db();
+        $stmt = $pdo->prepare("UPDATE functions SET name = :name, display_order = :display_order WHERE id = :id");
+        $stmt->execute(['name' => $name, 'display_order' => $display_order, 'id' => $id]);
+    }
+}
+
+header('Location: roles.php');
+exit();
--- a/_update_function_order.php
+++ b/_update_function_order.php
@ -0,0 +1,67 @@
+<?php
+require_once 'db/config.php';
+
+session_start();
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    if (isset($_POST['order']) && is_array($_POST['order'])) {
+        $ordered_ids = $_POST['order'];
+
+        $pdo = db();
+        $pdo->beginTransaction();
+
+        try {
+            foreach ($ordered_ids as $index => $id) {
+                $sql = "UPDATE functions SET display_order = ? WHERE id = ?";
+                $stmt = $pdo->prepare($sql);
+                $stmt->execute([$index + 1, $id]);
+            }
+            $pdo->commit();
+            header('Content-Type: application/json');
+            echo json_encode(['success' => true, 'message' => 'Order updated successfully.']);
+            exit();
+
+        } catch (PDOException $e) {
+            $pdo->rollBack();
+            header('Content-Type: application/json');
+            http_response_code(500);
+            echo json_encode(['success' => false, 'message' => 'Error updating display order: ' . $e->getMessage()]);
+            exit();
+        }
+    }
+}
+
+// Fallback for old form submission, though it's being deprecated
+if (isset($_POST['ids']) && isset($_POST['display_order'])) {
+    $ids = $_POST['ids'];
+    $display_orders = $_POST['display_order'];
+
+    if (count($ids) !== count($display_orders)) {
+        $_SESSION['error_message'] = "Something went wrong. Please try again.";
+        header("Location: functions.php");
+        exit();
+    }
+
+    $pdo = db();
+    $pdo->beginTransaction();
+
+    try {
+        for ($i = 0; $i < count($ids); $i++) {
+            $sql = "UPDATE functions SET display_order = ? WHERE id = ?";
+            $stmt = $pdo->prepare($sql);
+            $stmt->execute([$display_orders[$i], $ids[$i]]);
+        }
+        $pdo->commit();
+        $_SESSION['success_message'] = "Display order updated successfully.";
+    } catch (PDOException $e) {
+        $pdo->rollBack();
+        $_SESSION['error_message'] = "Error updating display order: " . $e->getMessage();
+    }
+
+    header("Location: functions.php");
+    exit();
+}
+
+http_response_code(400);
+header('Content-Type: application/json');
+echo json_encode(['success' => false, 'message' => 'Invalid request.']);
--- a/_update_instance_status.php
+++ b/_update_instance_status.php
@ -0,0 +1,30 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if (!isset($_SESSION['user_id'])) {
+    http_response_code(401);
+    die('Unauthorized');
+}
+
+$pdo = db();
+$instanceId = $_POST['instanceId'] ?? null;
+$status = $_POST['status'] ?? null;
+$userId = $_SESSION['user_id'];
+
+if (!$instanceId || !$status) {
+    http_response_code(400);
+    die('Missing parameters');
+}
+
+// Update instance status and last activity time
+$stmt = $pdo->prepare("UPDATE process_instances SET status = ?, lastActivityAt = NOW() WHERE id = ?");
+$stmt->execute([$status, $instanceId]);
+
+// Create a status change event
+$stmt_event = $pdo->prepare("INSERT INTO process_events (processInstanceId, eventType, description, createdBy) VALUES (?, 'status_change', ?, ?)");
+$stmt_event->execute([$instanceId, "Status changed to $status", $userId]);
+
+// Redirect back to the dashboard
+header("Location: process_dashboard.php");
+exit;
--- a/_update_person.php
+++ b/_update_person.php
@ -0,0 +1,52 @@
+<?php
+require_once 'db/config.php';
+session_start();
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $personId = $_POST['id'];
+    $firstName = $_POST['firstName'];
+    $lastName = $_POST['lastName'];
+    $email = $_POST['email'];
+    $companyName = $_POST['companyName'];
+    $phone = $_POST['phone'];
+    $role = $_POST['role'] ?? 'członek'; // Default to 'członek'
+    $functions = isset($_POST['functions']) ? $_POST['functions'] : [];
+    $password = $_POST['password'];
+
+    try {
+        $pdo = db();
+        
+        // Update person details
+        if (!empty($password)) {
+            $passwordHash = password_hash($password, PASSWORD_DEFAULT);
+            $sql = "UPDATE people SET firstName = ?, lastName = ?, email = ?, companyName = ?, phone = ?, password = ?, role = ? WHERE id = ?";
+            $stmt = $pdo->prepare($sql);
+            $stmt->execute([$firstName, $lastName, $email, $companyName, $phone, $passwordHash, $role, $personId]);
+        } else {
+            $sql = "UPDATE people SET firstName = ?, lastName = ?, email = ?, companyName = ?, phone = ?, role = ? WHERE id = ?";
+            $stmt = $pdo->prepare($sql);
+            $stmt->execute([$firstName, $lastName, $email, $companyName, $phone, $role, $personId]);
+        }
+
+        // Update functions
+        $stmt = $pdo->prepare("DELETE FROM user_functions WHERE user_id = ?");
+        $stmt->execute([$personId]);
+
+        if (!empty($functions)) {
+            $sql = "INSERT INTO user_functions (user_id, function_id) VALUES (?, ?)";
+            $stmt = $pdo->prepare($sql);
+            foreach ($functions as $functionId) {
+                $stmt->execute([$personId, $functionId]);
+            }
+        }
+
+        $_SESSION['success_message'] = 'Osoba zaktualizowana pomyślnie.';
+
+    } catch (PDOException $e) {
+        error_log('Update failed: ' . $e->getMessage());
+        $_SESSION['error_message'] = "Błąd podczas aktualizacji osoby.";
+    }
+
+    header('Location: index.php');
+    exit();
+}
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@ -0,0 +1,96 @@
+
+body {
+    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+    background-color: #f8f9fa;
+}
+
+.sidebar {
+    position: fixed;
+    top: 0;
+    bottom: 0;
+    left: 0;
+    z-index: 100;
+    padding: 48px 0 0;
+    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .1);
+    width: 250px;
+    transition: all 0.3s;
+}
+
+.sidebar-collapsed {
+    width: 80px;
+}
+
+.sidebar-collapsed .nav-link-text {
+    display: none;
+}
+
+.sidebar-collapsed .nav-link i {
+    font-size: 1.5rem;
+    margin-right: 0;
+}
+
+
+.main-content {
+    margin-left: 250px;
+    transition: margin-left 0.3s;
+    padding: 20px;
+}
+
+.main-content-collapsed {
+    margin-left: 80px;
+}
+
+.nav-link {
+    color: #333;
+}
+
+.nav-link.active {
+    color: #0d6efd;
+    font-weight: 500;
+}
+
+.navbar-brand {
+    padding-top: .75rem;
+    padding-bottom: .75rem;
+    font-size: 1rem;
+    background-color: rgba(0, 0, 0, .25);
+    box-shadow: inset -1px 0 0 rgba(0, 0, 0, .25);
+}
+
+.navbar .form-control {
+    padding: .75rem 1rem;
+    border-width: 0;
+    border-radius: 0;
+}
+
+/* Calendar styles */
+.calendar {
+    table-layout: fixed;
+}
+.calendar td {
+    height: 120px;
+    vertical-align: top;
+    border: 1px solid #ddd;
+    padding: 4px;
+}
+.calendar .day-number {
+    font-size: 0.8rem;
+    font-weight: bold;
+    color: #333;
+}
+.calendar .not-month {
+    background-color: #f8f9fa;
+}
+.events {
+    margin-top: 4px;
+}
+.event {
+    font-size: 0.75rem;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.submenu-item .nav-link {
+    padding-left: 2.5rem;
+}
--- a/assets/js/main.js
+++ b/assets/js/main.js
@ -0,0 +1,12 @@
+document.addEventListener('DOMContentLoaded', function () {
+    const sidebar = document.getElementById('sidebar');
+    const mainContent = document.getElementById('main-content');
+    const sidebarToggler = document.getElementById('sidebar-toggler');
+
+    if (sidebarToggler) {
+        sidebarToggler.addEventListener('click', function () {
+            sidebar.classList.toggle('sidebar-collapsed');
+            mainContent.classList.toggle('main-content-collapsed');
+        });
+    }
+});
--- a/bni_groups.php
+++ b/bni_groups.php
@ -0,0 +1,201 @@
+<?php
+require_once 'db/config.php';
+include '_header.php';
+include '_navbar.php';
+
+$pdo = db();
+$stmt = $pdo->query("SELECT * FROM bni_groups ORDER BY display_order");
+$bni_groups = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+?>
+
+<div class="container-fluid">
+    <div class="row">
+        <?php include '_sidebar.php'; ?>
+        <main class="col-md-9 ms-sm-auto col-lg-10 px-md-4">
+            <h1 class="h2 pt-3 pb-2 mb-3 border-bottom">BNI Groups</h1>
+
+            <?php if (isset($_SESSION['success_message'])): ?>
+            <div class="alert alert-success alert-dismissible fade show mt-3" role="alert">
+                <?= $_SESSION['success_message']; ?>
+                <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+            </div>
+            <?php unset($_SESSION['success_message']); ?>
+            <?php endif; ?>
+
+            <div class="d-flex justify-content-end mb-3">
+                <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#addModal">
+                    Add New BNI Group
+                </button>
+            </div>
+
+                        <div class="table-responsive mt-4">
+                <table class="table table-striped table-sm">
+                    <thead>
+                        <tr>
+                            <th style="width: 30px;"></th>
+                            <th>Name</th>
+                            <th>City</th>
+                            <th>Active</th>
+                            <th>Actions</th>
+                        </tr>
+                    </thead>
+                    <tbody id="sortable-list">
+                        <?php foreach ($bni_groups as $group): ?>
+                        <tr data-id="<?= $group['id'] ?>">
+                            <td class="handle"><i class="bi bi-grip-vertical"></i></td>
+                            <td><?= htmlspecialchars($group['name']) ?></td>
+                            <td><?= htmlspecialchars($group['city']) ?></td>
+                            <td><?= $group['active'] ? 'Yes' : 'No' ?></td>
+                            <td>
+                                <button type="button" class="btn btn-warning btn-sm" data-bs-toggle="modal" data-bs-target="#editModal" 
+                                        data-id="<?= $group['id'] ?>" 
+                                        data-name="<?= htmlspecialchars($group['name']) ?>" 
+                                        data-city="<?= htmlspecialchars($group['city']) ?>"
+                                        data-active="<?= $group['active'] ?>">
+                                    Edit
+                                </button>
+                                <button type="button" class="btn btn-danger btn-sm" data-bs-toggle="modal" data-bs-target="#deleteModal" data-id="<?= $group['id'] ?>">
+                                    Delete
+                                </button>
+                            </td>
+                        </tr>
+                        <?php endforeach; ?>
+                    </tbody>
+                </table>
+            </div>
+
+        </main>
+    </div>
+</div>
+
+<!-- Add Modal -->
+<div class="modal fade" id="addModal" tabindex="-1" aria-labelledby="addModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="addModalLabel">Add BNI Group</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <form action="_add_bni_group.php" method="post">
+        <div class="modal-body">
+            <div class="mb-3">
+                <label for="addName" class="form-label">Name</label>
+                <input type="text" class="form-control" id="addName" name="name" required>
+            </div>
+            <div class="mb-3">
+                <label for="addCity" class="form-label">City</label>
+                <input type="text" class="form-control" id="addCity" name="city">
+            </div>
+            <div class="form-check mb-3">
+                <input class="form-check-input" type="checkbox" value="1" id="addActive" name="active" checked>
+                <label class="form-check-label" for="addActive">
+                    Active
+                </label>
+            </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+          <button type="submit" name="add" class="btn btn-primary">Add</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+
+<!-- Edit Modal -->
+<div class="modal fade" id="editModal" tabindex="-1" aria-labelledby="editModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="editModalLabel">Edit BNI Group</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <form action="_update_bni_group.php" method="post">
+        <div class="modal-body">
+            <input type="hidden" id="editId" name="id">
+            <div class="mb-3">
+                <label for="editName" class="form-label">Name</label>
+                <input type="text" class="form-control" id="editName" name="name" required>
+            </div>
+            <div class="mb-3">
+                <label for="editCity" class="form-label">City</label>
+                <input type="text" class="form-control" id="editCity" name="city">
+            </div>
+            <div class="form-check mb-3">
+                <input class="form-check-input" type="checkbox" value="1" id="editActive" name="active">
+                <label class="form-check-label" for="editActive">
+                    Active
+                </label>
+            </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+          <button type="submit" name="edit" class="btn btn-primary">Save changes</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+
+<!-- Delete Modal -->
+<div class="modal fade" id="deleteModal" tabindex="-1" aria-labelledby="deleteModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="deleteModalLabel">Delete BNI Group</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <div class="modal-body">
+        Are you sure you want to delete this BNI group?
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
+        <a href="#" id="deleteLink" class="btn btn-danger">Delete</a>
+      </div>
+    </div>
+  </div>
+</div>
+
+
+<?php include '_footer.php'; ?>
+<script>
+document.addEventListener('DOMContentLoaded', function () {
+    var editModal = document.getElementById('editModal');
+    editModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        var id = button.getAttribute('data-id');
+        var name = button.getAttribute('data-name');
+        var city = button.getAttribute('data-city');
+        var active = button.getAttribute('data-active');
+        
+        var idInput = editModal.querySelector('#editId');
+        var nameInput = editModal.querySelector('#editName');
+        var cityInput = editModal.querySelector('#editCity');
+        var activeInput = editModal.querySelector('#editActive');
+        
+        idInput.value = id;
+        nameInput.value = name;
+        cityInput.value = city;
+        activeInput.checked = (active == 1);
+    });
+
+    var deleteModal = document.getElementById('deleteModal');
+    deleteModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        var id = button.getAttribute('data-id');
+        var deleteLink = deleteModal.querySelector('#deleteLink');
+        deleteLink.href = '_delete_bni_group.php?id=' + id;
+    });
+
+    $(function() {
+        $("#sortable-list").sortable({
+            handle: ".handle",
+            update: function(event, ui) {
+                var order = $(this).sortable('toArray', {attribute: 'data-id'});
+                $.post('_update_bni_group_order.php', { order: order });
+            }
+        }).disableSelection();
+    });
+});
+</script>
--- a/calendar.php
+++ b/calendar.php
@ -0,0 +1,303 @@
+<?php
+require_once 'db/config.php';
+include '_header.php';
+
+// Get current month and year
+$month = isset($_GET['month']) ? (int)$_GET['month'] : date('m');
+$year = isset($_GET['year']) ? (int)$_GET['year'] : date('Y');
+
+// Create a DateTime object for the first day of the month
+$firstDayOfMonth = new DateTime("$year-$month-01");
+$daysInMonth = $firstDayOfMonth->format('t');
+$dayOfWeek = $firstDayOfMonth->format('N'); // 1 (for Monday) through 7 (for Sunday)
+
+// Get events for the current month
+$pdo = db();
+$stmt = $pdo->prepare("SELECT c.*, t.name as type_name, t.color as type_color FROM calendar_events c LEFT JOIN event_types t ON c.event_type_id = t.id WHERE MONTH(c.start_datetime) = ? AND YEAR(c.start_datetime) = ? ORDER BY c.start_datetime ASC");
+$stmt->execute([$month, $year]);
+$events = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+$eventsByDay = [];
+foreach ($events as $event) {
+    $day = (new DateTime($event['start_datetime']))->format('j');
+    if (!isset($eventsByDay[$day])) {
+        $eventsByDay[$day] = [];
+    }
+    $eventsByDay[$day][] = $event;
+}
+
+// Get event types for the modal
+$stmt_types = $pdo->query("SELECT * FROM event_types ORDER BY display_order");
+$event_types = $stmt_types->fetchAll(PDO::FETCH_ASSOC);
+
+$prevMonth = $month == 1 ? 12 : $month - 1;
+$prevYear = $month == 1 ? $year - 1 : $year;
+$nextMonth = $month == 12 ? 1 : $month + 1;
+$nextYear = $month == 12 ? $year + 1 : $year;
+
+?>
+
+
+<?php include '_navbar.php'; ?>
+<div class="container-fluid">
+    <div class="row">
+        <?php include '_sidebar.php'; ?>
+        <main class="col-md-9 ms-sm-auto col-lg-10 px-md-4">
+
+    <h2 class="text-center"><?php echo $firstDayOfMonth->format('F Y'); ?></h2>
+    <div class="d-flex justify-content-between mb-3">
+        <a href="?month=<?php echo $prevMonth; ?>&year=<?php echo $prevYear; ?>" class="btn btn-primary">&lt; Previous</a>
+        <a href="?month=<?php echo $nextMonth; ?>&year=<?php echo $nextYear; ?>" class="btn btn-primary">Next &gt;</a>
+        <button type="button" class="btn btn-success" data-bs-toggle="modal" data-bs-target="#addEventModal">
+            Add Event
+        </button>
+    </div>
+    <table class="table table-bordered">
+        <thead>
+            <tr>
+                <th>Monday</th>
+                <th>Tuesday</th>
+                <th>Wednesday</th>
+                <th>Thursday</th>
+                <th>Friday</th>
+                <th>Saturday</th>
+                <th>Sunday</th>
+            </tr>
+        </thead>
+        <tbody>
+            <tr>
+                <?php
+                // Print empty cells
+                for ($i = 1; $i < $dayOfWeek; $i++) {
+                    echo "<td></td>";
+                }
+
+                $currentDay = 1;
+                while ($currentDay <= $daysInMonth) {
+                    if ($dayOfWeek > 7) {
+                        $dayOfWeek = 1;
+                        echo "</tr><tr>";
+                    }
+
+                    echo "<td class=\"calendar-day\" data-date=\"$year-$month-$currentDay\">";
+                    echo "<strong>$currentDay</strong>";
+                    if (isset($eventsByDay[$currentDay])) {
+                        echo "<ul class=\"list-unstyled\">";
+                        foreach ($eventsByDay[$currentDay] as $event) {
+                            echo '<li class="badge" style="background-color: '.($event['type_color'] ?? '#007bff').'" data-event-id="'.$event['id'].'">' . htmlspecialchars($event['title']) . "</li>";
+                        }
+                        echo "</ul>";
+                    }
+                    echo "</td>";
+
+                    $currentDay++;
+                    $dayOfWeek++;
+                }
+
+                // Print remaining empty cells
+                while ($dayOfWeek <= 7) {
+                    echo "<td></td>";
+                    $dayOfWeek++;
+                }
+                ?>
+            </tr>
+        </tbody>
+    </table>
+        </main>
+    </div>
+</div>
+
+<!-- Event Details Modal -->
+<div class="modal fade" id="eventDetailsModal" tabindex="-1" aria-labelledby="eventDetailsModalLabel" aria-hidden="true">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="eventDetailsModalLabel">Event Details</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+            </div>
+            <div class="modal-body">
+                <h5 id="event-title"></h5>
+                <p id="event-description"></p>
+                <p><strong>Starts:</strong> <span id="event-start"></span></p>
+                <p><strong>Ends:</strong> <span id="event-end"></span></p>
+                <p><strong>Type:</strong> <span id="event-type"></span></p>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+                <button type="button" class="btn btn-primary" id="edit-event-btn">Edit</button>
+                <a href="#" id="delete-event-btn" class="btn btn-danger">Delete</a>
+            </div>
+        </div>
+    </div>
+</div>
+
+<div class="modal fade" id="addEventModal" tabindex="-1" aria-labelledby="addEventModalLabel" aria-hidden="true">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="addEventModalLabel">Add Calendar Event</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+            </div>
+            <div class="modal-body">
+                <form action="_add_calendar_event.php" method="post">
+                    <div class="mb-3">
+                        <label for="title" class="form-label">Title</label>
+                        <input type="text" class="form-control" id="title" name="title" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="description" class="form-label">Description</label>
+                        <textarea class="form-control" id="description" name="description"></textarea>
+                    </div>
+                    <div class="mb-3">
+                        <label for="start_datetime" class="form-label">Start Time</label>
+                        <input type="datetime-local" class="form-control" id="start_datetime" name="start_datetime" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="end_datetime" class="form-label">End Time</label>
+                        <input type="datetime-local" class="form-control" id="end_datetime" name="end_datetime" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="event_type_id" class="form-label">Type</label>
+                        <select class="form-select" id="event_type_id" name="event_type_id">
+                            <?php foreach ($event_types as $type): ?>
+                            <option value="<?= $type['id'] ?>"><?= htmlspecialchars($type['name']) ?></option>
+                            <?php endforeach; ?>
+                        </select>
+                    </div>
+                    <div class="mb-3">
+                        <label for="recurrence" class="form-label">Recurrence</label>
+                        <select class="form-select" id="recurrence" name="recurrence">
+                            <option value="">Does not repeat</option>
+                            <option value="daily">Daily</option>
+                            <option value="weekly">Weekly</option>
+                            <option value="monthly">Monthly</option>
+                        </select>
+                    </div>
+                    <div class="mb-3" id="recurrence_end_date_container" style="display: none;">
+                        <label for="recurrence_end_date" class="form-label">Recurrence End Date</label>
+                        <input type="date" class="form-control" id="recurrence_end_date" name="recurrence_end_date">
+                    </div>
+                    <button type="submit" class="btn btn-primary">Save Event</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
+
+<div class="modal fade" id="editEventModal" tabindex="-1" aria-labelledby="editEventModalLabel" aria-hidden="true">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="editEventModalLabel">Edit Calendar Event</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+            </div>
+            <div class="modal-body">
+                <form action="_update_calendar_event.php" method="post">
+                    <input type="hidden" id="edit_event_id" name="event_id">
+                    <div class="mb-3">
+                        <label for="edit_title" class="form-label">Title</label>
+                        <input type="text" class="form-control" id="edit_title" name="title" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="edit_description" class="form-label">Description</label>
+                        <textarea class="form-control" id="edit_description" name="description"></textarea>
+                    </div>
+                    <div class="mb-3">
+                        <label for="edit_start_datetime" class="form-label">Start Time</label>
+                        <input type="datetime-local" class="form-control" id="edit_start_datetime" name="start_datetime" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="edit_end_datetime" class="form-label">End Time</label>
+                        <input type="datetime-local" class="form-control" id="edit_end_datetime" name="end_datetime" required>
+                    </div>
+                    <div class="mb-3">
+                        <label for="edit_event_type_id" class="form-label">Type</label>
+                        <select class="form-select" id="edit_event_type_id" name="event_type_id">
+                            <?php foreach ($event_types as $type): ?>
+                            <option value="<?= $type['id'] ?>"><?= htmlspecialchars($type['name']) ?></option>
+                            <?php endforeach; ?>
+                        </select>
+                    </div>
+                    <button type="submit" class="btn btn-primary">Save Changes</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
+
+
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    const addEventModal = new bootstrap.Modal(document.getElementById('addEventModal'));
+    const eventDetailsModal = new bootstrap.Modal(document.getElementById('eventDetailsModal'));
+    const editEventModal = new bootstrap.Modal(document.getElementById('editEventModal'));
+
+    let currentEventData = null;
+
+    document.querySelectorAll('.calendar-day').forEach(day => {
+        day.addEventListener('click', function(e) {
+            if (e.target.classList.contains('badge')) {
+                const eventId = e.target.dataset.eventId;
+                fetch(`_get_event_details.php?id=${eventId}`)
+                    .then(response => response.json())
+                    .then(data => {
+                        currentEventData = data;
+                        document.getElementById('event-title').textContent = data.title;
+                        document.getElementById('event-description').textContent = data.description;
+                        document.getElementById('event-start').textContent = new Date(data.start_datetime).toLocaleString();
+                        document.getElementById('event-end').textContent = new Date(data.end_datetime).toLocaleString();
+                        document.getElementById('event-type').textContent = data.type_name;
+                        document.getElementById('delete-event-btn').href = `_delete_calendar_event.php?id=${eventId}`;
+                        eventDetailsModal.show();
+                    });
+            } else {
+                const date = this.dataset.date;
+                const now = new Date();
+                const hours = String(now.getHours()).padStart(2, '0');
+                const minutes = String(now.getMinutes()).padStart(2, '0');
+                const currentTime = `${hours}:${minutes}`;
+                
+                const startInput = document.getElementById('start_datetime');
+                const month = String(new Date(date).getMonth() + 1).padStart(2, '0');
+                const dayOfMonth = String(new Date(date).getDate()).padStart(2, '0');
+                const year = new Date(date).getFullYear();
+                startInput.value = `${year}-${month}-${dayOfMonth}T${currentTime}`;
+                
+                addEventModal.show();
+            }
+        });
+    });
+
+    document.getElementById('edit-event-btn').addEventListener('click', function() {
+        if (currentEventData) {
+            if (currentEventData.parent_event_id !== null) {
+                alert("Editing of recurring events is not supported yet. Please edit the parent event.");
+                return;
+            }
+            document.getElementById('edit_event_id').value = currentEventData.id;
+            document.getElementById('edit_title').value = currentEventData.title;
+            document.getElementById('edit_description').value = currentEventData.description;
+            document.getElementById('edit_start_datetime').value = currentEventData.start_datetime.slice(0, 16);
+            document.getElementById('edit_end_datetime').value = currentEventData.end_datetime.slice(0, 16);
+            document.getElementById('edit_event_type_id').value = currentEventData.event_type_id;
+            eventDetailsModal.hide();
+            editEventModal.show();
+        }
+    });
+
+    const recurrenceSelect = document.getElementById('recurrence');
+    const recurrenceEndDateContainer = document.getElementById('recurrence_end_date_container');
+
+    recurrenceSelect.addEventListener('change', function() {
+        if (this.value) {
+            recurrenceEndDateContainer.style.display = 'block';
+        } else {
+            recurrenceEndDateContainer.style.display = 'none';
+        }
+    });
+});
+</script>
+
+<?php
+include '_footer.php';
+?>
--- a/db/migrations/001_add_process_definition_json.php
+++ b/db/migrations/001_add_process_definition_json.php
@ -0,0 +1,8 @@
+<?php
+
+function migrate_001($pdo) {
+    $sql = "ALTER TABLE process_definitions ADD COLUMN definition_json TEXT NULL AFTER name;";
+    $pdo->exec($sql);
+    echo "Migration 001 applied: Added definition_json to process_definitions.\n";
+}
+
--- a/db/migrations/002_create_calendar_events_table.php
+++ b/db/migrations/002_create_calendar_events_table.php
@ -0,0 +1,17 @@
+<?php
+
+function migrate_002($pdo) {
+    $sql = "CREATE TABLE IF NOT EXISTS calendar_events (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        title VARCHAR(255) NOT NULL,
+        description TEXT,
+        start_datetime DATETIME NOT NULL,
+        end_datetime DATETIME NOT NULL,
+        type VARCHAR(50) NOT NULL, -- 'meeting', 'training'
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    );";
+    $pdo->exec($sql);
+    echo "Migration 002 applied: Created calendar_events table.\n";
+}
+
+
--- a/db/migrations/003_create_event_types_table.php
+++ b/db/migrations/003_create_event_types_table.php
@ -0,0 +1,26 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $pdo = db();
+
+    $sql = "CREATE TABLE IF NOT EXISTS event_types (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        name VARCHAR(255) NOT NULL,
+        color VARCHAR(7) NOT NULL DEFAULT '#007bff'
+    );";
+
+    $pdo->exec($sql);
+
+    // Add some default values
+    $sql_insert = "INSERT INTO event_types (name, color) VALUES
+    ('Meeting', '#007bff'),
+    ('Training', '#ffc107'),
+    ('Other', '#28a745');";
+    $pdo->exec($sql_insert);
+
+
+    echo "Migration 003 completed successfully.\n";
+} catch (PDOException $e) {
+    die("Migration 003 failed: " . $e->getMessage() . "\n");
+}
--- a/db/migrations/004_add_event_type_id_to_calendar_events.php
+++ b/db/migrations/004_add_event_type_id_to_calendar_events.php
@ -0,0 +1,34 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $pdo = db();
+
+    // First, add the column without the foreign key constraint
+    $sql_add_column = "ALTER TABLE calendar_events ADD COLUMN event_type_id INT NULL;";
+    $pdo->exec($sql_add_column);
+
+    // Set a default value for existing rows to avoid foreign key constraint errors
+    // Get the ID of the 'Other' event type
+    $stmt = $pdo->query("SELECT id FROM event_types WHERE name = 'Other' LIMIT 1");
+    $other_type = $stmt->fetch(PDO::FETCH_ASSOC);
+    $default_type_id = $other_type ? $other_type['id'] : 1; // Fallback to 1 if 'Other' not found
+
+    $sql_update_existing = "UPDATE calendar_events SET event_type_id = ? WHERE event_type_id IS NULL;";
+    $stmt_update = $pdo->prepare($sql_update_existing);
+    $stmt_update->execute([$default_type_id]);
+
+    // Now, add the foreign key constraint
+    $sql_add_fk = "ALTER TABLE calendar_events ADD CONSTRAINT fk_event_type FOREIGN KEY (event_type_id) REFERENCES event_types(id) ON DELETE SET NULL;";
+    $pdo->exec($sql_add_fk);
+
+    echo "Migration 004 completed successfully.\n";
+} catch (PDOException $e) {
+    // Check if the column already exists, which might happen on re-runs
+    if (strpos($e->getMessage(), 'Duplicate column name') !== false) {
+        echo "Migration 004 seems to be already applied (Column exists). Skipping.\n";
+    } else {
+        die("Migration 004 failed: " . $e->getMessage() . "\n");
+    }
+}
+
--- a/db/migrations/005_create_bni_groups_table.php
+++ b/db/migrations/005_create_bni_groups_table.php
@ -0,0 +1,18 @@
+<?php
+require_once(__DIR__ . '/../config.php');
+
+try {
+    $pdo = db();
+    $sql = "CREATE TABLE IF NOT EXISTS `bni_groups` (
+        `id` INT AUTO_INCREMENT PRIMARY KEY,
+        `name` VARCHAR(255) NOT NULL,
+        `city` VARCHAR(255),
+        `active` BOOLEAN NOT NULL DEFAULT 1,
+        `created_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    );";
+    $pdo->exec($sql);
+    echo "Table 'bni_groups' created successfully." . PHP_EOL;
+} catch (PDOException $e) {
+    echo "Error creating table 'bni_groups': " . $e->getMessage() . PHP_EOL;
+    exit(1);
+}
--- a/db/migrations/006_add_recurrence_to_calendar_events.php
+++ b/db/migrations/006_add_recurrence_to_calendar_events.php
@ -0,0 +1,20 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $pdo = db();
+
+    $sql = <<<SQL
+    ALTER TABLE `calendar_events`
+    ADD COLUMN `recurrence` VARCHAR(20) DEFAULT NULL,
+    ADD COLUMN `recurrence_end_date` DATE DEFAULT NULL,
+    ADD COLUMN `parent_event_id` INT DEFAULT NULL;
+SQL;
+
+    $pdo->exec($sql);
+
+    echo "Migration 006 executed successfully: Added recurrence columns to calendar_events table.\n";
+
+} catch (Exception $e) {
+    die("Error executing migration 006: " . $e->getMessage() . "\n");
+}
--- a/db/migrations/007_remove_type_from_calendar_events.php
+++ b/db/migrations/007_remove_type_from_calendar_events.php
@ -0,0 +1,17 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $pdo = db();
+    $sql = "ALTER TABLE calendar_events DROP COLUMN type;";
+    $pdo->exec($sql);
+    echo "Migration 007 completed successfully: Dropped 'type' column from calendar_events.\n";
+} catch (PDOException $e) {
+    // Check if the column has already been dropped
+    if (strpos($e->getMessage(), 'column not found') !== false || strpos($e->getMessage(), 'Unknown column') !== false) {
+        echo "Migration 007 seems to be already applied (Column not found). Skipping.\n";
+    } else {
+        die("Migration 007 failed: " . $e->getMessage() . "\n");
+    }
+}
+
--- a/db/migrations/008_create_roles_table.php
+++ b/db/migrations/008_create_roles_table.php
@ -0,0 +1,16 @@
+<?php
+require_once(__DIR__ . '/../config.php');
+
+try {
+    $pdo = db();
+    $sql = "CREATE TABLE IF NOT EXISTS `roles` (
+        `id` INT(11) UNSIGNED NOT NULL AUTO_INCREMENT,
+        `name` VARCHAR(255) NOT NULL,
+        PRIMARY KEY (`id`)
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;";
+    $pdo->exec($sql);
+    echo "Table 'roles' created successfully." . PHP_EOL;
+} catch (PDOException $e) {
+    echo "Error creating table 'roles': " . $e->getMessage() . PHP_EOL;
+    exit(1);
+}
--- a/db/migrations/009_create_user_roles_table.php
+++ b/db/migrations/009_create_user_roles_table.php
@ -0,0 +1,18 @@
+<?php
+require_once(__DIR__ . '/../config.php');
+
+try {
+    $pdo = db();
+    $sql = "CREATE TABLE IF NOT EXISTS `user_roles` (
+        `user_id` INT(11) UNSIGNED NOT NULL,
+        `role_id` INT(11) UNSIGNED NOT NULL,
+        PRIMARY KEY (`user_id`, `role_id`),
+                FOREIGN KEY (`user_id`) REFERENCES `people`(`id`) ON DELETE CASCADE,
+        FOREIGN KEY (`role_id`) REFERENCES `roles`(`id`) ON DELETE CASCADE
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;";
+    $pdo->exec($sql);
+    echo "Table 'user_roles' created successfully." . PHP_EOL;
+} catch (PDOException $e) {
+    echo "Error creating table 'user_roles': " . $e->getMessage() . PHP_EOL;
+    exit(1);
+}
--- a/db/migrations/010_add_display_order_to_event_types.php
+++ b/db/migrations/010_add_display_order_to_event_types.php
@ -0,0 +1,12 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $pdo = db();
+    $sql = "ALTER TABLE event_types ADD COLUMN display_order INT NOT NULL DEFAULT 0";
+    $pdo->exec($sql);
+    echo "Migration 010_add_display_order_to_event_types executed successfully." . PHP_EOL;
+} catch (PDOException $e) {
+    echo "Error executing migration 010_add_display_order_to_event_types: " . $e->getMessage() . PHP_EOL;
+    exit(1);
+}
--- a/db/migrations/011_add_display_order_to_bni_groups.php
+++ b/db/migrations/011_add_display_order_to_bni_groups.php
@ -0,0 +1,12 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $pdo = db();
+    $sql = "ALTER TABLE bni_groups ADD COLUMN display_order INT NOT NULL DEFAULT 0";
+    $pdo->exec($sql);
+    echo "Migration 011_add_display_order_to_bni_groups executed successfully." . PHP_EOL;
+} catch (PDOException $e) {
+    echo "Error executing migration 011_add_display_order_to_bni_groups: " . $e->getMessage() . PHP_EOL;
+    exit(1);
+}
--- a/db/migrations/012_add_display_order_to_roles.php
+++ b/db/migrations/012_add_display_order_to_roles.php
@ -0,0 +1,12 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $pdo = db();
+    $sql = "ALTER TABLE roles ADD COLUMN display_order INT NOT NULL DEFAULT 0";
+    $pdo->exec($sql);
+    echo "Migration 012_add_display_order_to_roles executed successfully." . PHP_EOL;
+} catch (PDOException $e) {
+    echo "Error executing migration 012_add_display_order_to_roles: " . $e->getMessage() . PHP_EOL;
+    exit(1);
+}
--- a/db/migrations/013_rename_roles_to_functions.php
+++ b/db/migrations/013_rename_roles_to_functions.php
@ -0,0 +1,21 @@
+<?php
+require_once(__DIR__ . '/../config.php');
+
+try {
+    $pdo = db();
+    $sql = "RENAME TABLE `roles` TO `functions`;";
+    $pdo->exec($sql);
+    echo "Table 'roles' renamed to 'functions' successfully." . PHP_EOL;
+
+    $sql = "RENAME TABLE `user_roles` TO `user_functions`;";
+    $pdo->exec($sql);
+    echo "Table 'user_roles' renamed to 'user_functions' successfully." . PHP_EOL;
+
+    $sql = "ALTER TABLE `user_functions` CHANGE `role_id` `function_id` INT(11) UNSIGNED NOT NULL;";
+    $pdo->exec($sql);
+    echo "Column 'role_id' renamed to 'function_id' in 'user_functions' table successfully." . PHP_EOL;
+
+} catch (PDOException $e) {
+    echo "Error renaming tables or columns: " . $e->getMessage() . PHP_EOL;
+    exit(1);
+}
--- a/db/migrations/014_add_role_to_people_table.php
+++ b/db/migrations/014_add_role_to_people_table.php
@ -0,0 +1,21 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+function migrate_014_add_role_to_people_table() {
+    $pdo = db();
+
+    // Check if the column already exists
+    try {
+        $result = $pdo->query("SELECT `role` FROM `people` LIMIT 1");
+    } catch (PDOException $e) {
+        // Column does not exist, so add it
+        $pdo->exec("ALTER TABLE `people` ADD COLUMN `role` VARCHAR(50) NOT NULL DEFAULT 'członek' AFTER `email`");
+        echo "Migration 014: Added 'role' column to 'people' table.\n";
+        return;
+    }
+
+    echo "Migration 014: 'role' column already exists in 'people' table. No changes made.\n";
+}
+
+migrate_014_add_role_to_people_table();
+
--- a/db_setup.php
+++ b/db_setup.php
@ -0,0 +1,133 @@
+<?php
+require_once 'db/config.php';
+
+try {
+    $pdo = db();
+    
+    echo "Starting database setup...\n";
+
+    // 1. People table (unified table for users and contacts)
+    $pdo->exec("CREATE TABLE IF NOT EXISTS `people` (
+        `id` INT(11) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+        `firstName` VARCHAR(255) NOT NULL,
+        `lastName` VARCHAR(255) NOT NULL,
+        `email` VARCHAR(255) NOT NULL UNIQUE,
+        `password` VARCHAR(255) NULL,
+        `companyName` VARCHAR(255) DEFAULT NULL,
+        `phone` VARCHAR(50) DEFAULT NULL,
+        `role` ENUM('admin', 'team_member', 'member', 'guest') NOT NULL DEFAULT 'guest',
+        `is_user` BOOLEAN NOT NULL DEFAULT FALSE,
+        `active` BOOLEAN NOT NULL DEFAULT TRUE,
+        `createdAt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    )");
+    echo "People table created or already exists.\n";
+
+    // Seed default admin user
+    $stmt = $pdo->prepare("SELECT id FROM people WHERE email = ?");
+    $stmt->execute(['admin@example.com']);
+    if ($stmt->fetchColumn() === false) {
+        $password = password_hash('password', PASSWORD_DEFAULT);
+        $insert_stmt = $pdo->prepare(
+            "INSERT INTO people (email, password, role, firstName, lastName, is_user, active) VALUES (?, ?, 'admin', 'Admin', 'User', TRUE, TRUE)"
+        );
+        $insert_stmt->execute(['admin@example.com', $password]);
+        echo "Default admin user created. Email: admin@example.com, Password: password\n";
+    }
+
+    // 2. Process Definitions table
+    $pdo->exec("CREATE TABLE IF NOT EXISTS `process_definitions` (
+        `id` INT(11) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+        `code` VARCHAR(255) NOT NULL UNIQUE,
+        `name` VARCHAR(255) NOT NULL,
+        `description` TEXT,
+        `version` INT NOT NULL DEFAULT 1,
+        `is_active` BOOLEAN NOT NULL DEFAULT TRUE,
+        `start_node_id` VARCHAR(255),
+        `definition_json` TEXT,
+        `createdAt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    )");
+    echo "Process definitions table created or already exists.\n";
+
+    // Seed process_definitions
+    $processes = [
+        ['code' => 'mentoring', 'name' => 'Mentoring nowego czlonka', 'description' => 'Proces wdrozenia nowego czlonka do organizacji.'],
+        ['code' => 'meeting_preparation', 'name' => 'Przygotowanie spotkania grupy', 'description' => 'Proces przygotowania do spotkania grupy, w tym agenda, materialy, etc.'],
+        ['code' => 'guest_handling', 'name' => 'Obsluga goscia', 'description' => 'Proces obslugi gosci odwiedzajacych organizacje.']
+    ];
+    $stmt = $pdo->prepare("SELECT id FROM process_definitions WHERE code = ?");
+    $insert_stmt = $pdo->prepare("INSERT INTO process_definitions (code, name, description) VALUES (?, ?, ?)");
+    foreach ($processes as $process) {
+        $stmt->execute([$process['code']]);
+        if ($stmt->fetchColumn() === false) {
+            $insert_stmt->execute([$process['code'], $process['name'], $process['description']]);
+            echo "Seeded process: " . $process['name'] . "\n";
+        }
+    }
+
+    // 3. Process Instances table (updated FK)
+    $pdo->exec("CREATE TABLE IF NOT EXISTS `process_instances` (
+        `id` INT(11) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+        `personId` INT(11) UNSIGNED NOT NULL,
+        `processDefinitionId` INT(11) UNSIGNED NOT NULL,
+        `current_status` VARCHAR(255) NOT NULL DEFAULT 'none',
+        `current_node_id` VARCHAR(255),
+        `current_reason` TEXT,
+        `suggested_next_step` TEXT,
+        `data_json` TEXT,
+        `lastActivityAt` TIMESTAMP NULL,
+        FOREIGN KEY (personId) REFERENCES people(id) ON DELETE CASCADE,
+        FOREIGN KEY (processDefinitionId) REFERENCES process_definitions(id) ON DELETE CASCADE,
+        UNIQUE KEY `person_process` (`personId`, `processDefinitionId`)
+    )");
+    echo "Process instances table created or already exists.\n";
+
+    // 4. Process Events table (updated FK)
+    $pdo->exec("CREATE TABLE IF NOT EXISTS `process_events` (
+        `id` INT(11) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
+        `processInstanceId` INT(11) UNSIGNED NOT NULL,
+        `event_type` VARCHAR(50) NOT NULL,
+        `message` TEXT,
+        `node_id` VARCHAR(255),
+        `payload_json` TEXT,
+        `createdBy` INT(11) UNSIGNED NOT NULL,
+        `createdAt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+        FOREIGN KEY (processInstanceId) REFERENCES process_instances(id) ON DELETE CASCADE,
+        FOREIGN KEY (createdBy) REFERENCES people(id) ON DELETE CASCADE
+    )");
+    echo "Process events table created or already exists.\n";
+    
+    // MIGRATIONS
+    echo "Starting migrations...\n";
+
+    // Migration: Rename `processId` to `processDefinitionId` in `process_instances`
+    $stmt = $pdo->query("SHOW COLUMNS FROM `process_instances` LIKE 'processId'");
+    if ($stmt->fetch()) {
+        $checkFk = $pdo->query("SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE REFERENCED_TABLE_SCHEMA = SCHEMA() AND TABLE_NAME = 'process_instances' AND COLUMN_NAME = 'processId';")->fetch();
+        if ($checkFk) {
+             $pdo->exec("ALTER TABLE `process_instances` DROP FOREIGN KEY `{$checkFk['CONSTRAINT_NAME']}`;");
+        }
+        $pdo->exec("ALTER TABLE `process_instances` CHANGE `processId` `processDefinitionId` INT(11) UNSIGNED NOT NULL;");
+        $pdo->exec("ALTER TABLE `process_instances` ADD FOREIGN KEY (`processDefinitionId`) REFERENCES `process_definitions`(`id`) ON DELETE CASCADE;");
+        echo "Migrated process_instances: processId -> processDefinitionId.\n";
+    }
+
+    // Migration: Rename `contactId` to `personId` and update foreign key in `process_instances`
+    $stmt = $pdo->query("SHOW COLUMNS FROM `process_instances` LIKE 'contactId'");
+    if ($stmt->fetch()) {
+        $checkFk = $pdo->query("SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE REFERENCED_TABLE_SCHEMA = SCHEMA() AND TABLE_NAME = 'process_instances' AND COLUMN_NAME = 'contactId';")->fetch();
+        if ($checkFk) {
+             $pdo->exec("ALTER TABLE `process_instances` DROP FOREIGN KEY `{$checkFk['CONSTRAINT_NAME']}`;");
+        }
+        $pdo->exec("ALTER TABLE `process_instances` CHANGE `contactId` `personId` INT(11) UNSIGNED NOT NULL;");
+        echo "Migrated process_instances: contactId -> personId.\n";
+    }
+    
+    // Drop old tables if they exist
+    $pdo->exec("DROP TABLE IF EXISTS `users`, `contacts`;");
+    echo "Dropped old 'users' and 'contacts' tables.\n";
+
+    echo "\nDatabase setup/update completed successfully.\n";
+
+} catch (PDOException $e) {
+    die("Database setup failed: " . $e->getMessage());
+}
--- a/event_types.php
+++ b/event_types.php
@ -0,0 +1,185 @@
+<?php
+require_once 'db/config.php';
+include '_header.php';
+include '_navbar.php';
+
+$pdo = db();
+$stmt = $pdo->query("SELECT * FROM event_types ORDER BY display_order");
+$event_types = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+?>
+
+<div class="container-fluid">
+    <div class="row">
+        <?php include '_sidebar.php'; ?>
+        <main class="col-md-9 ms-sm-auto col-lg-10 px-md-4">
+            <h1 class="h2 pt-3 pb-2 mb-3 border-bottom">Event Types</h1>
+
+            <?php if (isset($_SESSION['success_message'])): ?>
+            <div class="alert alert-success alert-dismissible fade show mt-3" role="alert">
+                <?= $_SESSION['success_message']; ?>
+                <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+            </div>
+            <?php unset($_SESSION['success_message']); ?>
+            <?php endif; ?>
+
+            <div class="d-flex justify-content-end mb-3">
+                <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#addModal">
+                    Add New Event Type
+                </button>
+            </div>
+
+                        <div class="table-responsive mt-4">
+                <table class="table table-striped table-sm">
+                    <thead>
+                        <tr>
+                            <th style="width: 30px;"></th>
+                            <th>Name</th>
+                            <th>Color</th>
+                            <th>Actions</th>
+                        </tr>
+                    </thead>
+                    <tbody id="sortable-list">
+                        <?php foreach ($event_types as $type): ?>
+                        <tr data-id="<?= $type['id'] ?>">
+                            <td class="handle"><i class="bi bi-grip-vertical"></i></td>
+                            <td><?= htmlspecialchars($type['name']) ?></td>
+                            <td><span class="badge" style="background-color: <?= htmlspecialchars($type['color']) ?>"><?= htmlspecialchars($type['color']) ?></span></td>
+                            <td>
+                                <button type="button" class="btn btn-warning btn-sm" data-bs-toggle="modal" data-bs-target="#editModal" data-id="<?= $type['id'] ?>" data-name="<?= htmlspecialchars($type['name']) ?>" data-color="<?= htmlspecialchars($type['color']) ?>" data-display-order="<?= htmlspecialchars($type['display_order']) ?>">
+                                    Edit
+                                </button>
+                                <button type="button" class="btn btn-danger btn-sm" data-bs-toggle="modal" data-bs-target="#deleteModal" data-id="<?= $type['id'] ?>">
+                                    Delete
+                                </button>
+                            </td>
+                        </tr>
+                        <?php endforeach; ?>
+                    </tbody>
+                </table>
+            </div>
+
+        </main>
+    </div>
+</div>
+
+<!-- Add Modal -->
+<div class="modal fade" id="addModal" tabindex="-1" aria-labelledby="addModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="addModalLabel">Add Event Type</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <form action="_add_event_type.php" method="post">
+        <div class="modal-body">
+            <div class="mb-3">
+                <label for="addName" class="form-label">Name</label>
+                <input type="text" class="form-control" id="addName" name="name" required>
+            </div>
+            <div class="mb-3">
+                <label for="addColor" class="form-label">Color</label>
+                <input type="color" class="form-control" id="addColor" name="color" value="#007bff" required>
+            </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+          <button type="submit" name="add" class="btn btn-primary">Add</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+
+<!-- Edit Modal -->
+<div class="modal fade" id="editModal" tabindex="-1" aria-labelledby="editModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="editModalLabel">Edit Event Type</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <form action="_update_event_type.php" method="post">
+        <div class="modal-body">
+            <input type="hidden" id="editId" name="id">
+            <input type="hidden" id="editDisplayOrder" name="display_order">
+            <div class="mb-3">
+                <label for="editName" class="form-label">Name</label>
+                <input type="text" class="form-control" id="editName" name="name" required>
+            </div>
+            <div class="mb-3">
+                <label for="editColor" class="form-label">Color</label>
+                <input type="color" class="form-control" id="editColor" name="color" required>
+            </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+          <button type="submit" name="edit" class="btn btn-primary">Save changes</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+
+<!-- Delete Modal -->
+<div class="modal fade" id="deleteModal" tabindex="-1" aria-labelledby="deleteModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="deleteModalLabel">Delete Event Type</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <div class="modal-body">
+        Are you sure you want to delete this event type?
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
+        <a href="#" id="deleteLink" class="btn btn-danger">Delete</a>
+      </div>
+    </div>
+  </div>
+</div>
+
+
+<?php include '_footer.php'; ?>
+<script>
+document.addEventListener('DOMContentLoaded', function () {
+    var editModal = document.getElementById('editModal');
+    editModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        var id = button.getAttribute('data-id');
+        var name = button.getAttribute('data-name');
+        var color = button.getAttribute('data-color');
+        var display_order = button.getAttribute('data-display-order');
+        
+        var modalTitle = editModal.querySelector('.modal-title');
+        var idInput = editModal.querySelector('#editId');
+        var nameInput = editModal.querySelector('#editName');
+        var colorInput = editModal.querySelector('#editColor');
+        var displayOrderInput = editModal.querySelector('#editDisplayOrder');
+        
+        idInput.value = id;
+        nameInput.value = name;
+        colorInput.value = color;
+        displayOrderInput.value = display_order;
+    });
+
+    var deleteModal = document.getElementById('deleteModal');
+    deleteModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        var id = button.getAttribute('data-id');
+        var deleteLink = deleteModal.querySelector('#deleteLink');
+        deleteLink.href = '_delete_event_type.php?id=' + id;
+    });
+    
+    $(function() {
+        $("#sortable-list").sortable({
+            handle: ".handle",
+            update: function(event, ui) {
+                var order = $(this).sortable('toArray', {attribute: 'data-id'});
+                $.post('_update_event_type_order.php', { order: order });
+            }
+        }).disableSelection();
+    });
+});
+</script>
--- a/functions.php
+++ b/functions.php
@ -0,0 +1,168 @@
+<?php
+require_once 'db/config.php';
+include '_header.php';
+include '_navbar.php';
+
+$pdo = db();
+$stmt = $pdo->query("SELECT * FROM functions ORDER BY display_order");
+$functions = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+?>
+
+<div class="container-fluid">
+    <div class="row">
+        <?php include '_sidebar.php'; ?>
+        <main class="col-md-9 ms-sm-auto col-lg-10 px-md-4">
+            <h1 class="h2 pt-3 pb-2 mb-3 border-bottom">Functions</h1>
+
+            <?php if (isset($_SESSION['success_message'])): ?>
+            <div class="alert alert-success alert-dismissible fade show mt-3" function="alert">
+                <?= $_SESSION['success_message']; ?>
+                <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+            </div>
+            <?php unset($_SESSION['success_message']); ?>
+            <?php endif; ?>
+
+            <div class="d-flex justify-content-end mb-3">
+                <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#addModal">
+                    Add New Function
+                </button>
+            </div>
+
+            <div class="table-responsive mt-4">
+                <table class="table table-striped table-sm">
+                    <thead>
+                        <tr>
+                            <th style="width: 30px;"></th>
+                            <th>Name</th>
+                            <th>Actions</th>
+                        </tr>
+                    </thead>
+                    <tbody id="sortable-list">
+                        <?php foreach ($functions as $function): ?>
+                        <tr data-id="<?= $function['id'] ?>">
+                            <td class="handle"><i class="bi bi-grip-vertical"></i></td>
+                            <td><?= htmlspecialchars($function['name']) ?></td>
+                            <td>
+                                <button type="button" class="btn btn-warning btn-sm" data-bs-toggle="modal" data-bs-target="#editModal" data-id="<?= $function['id'] ?>" data-name="<?= htmlspecialchars($function['name']) ?>">
+                                    Edit
+                                </button>
+                                <button type="button" class="btn btn-danger btn-sm" data-bs-toggle="modal" data-bs-target="#deleteModal" data-id="<?= $function['id'] ?>">
+                                    Delete
+                                </button>
+                            </td>
+                        </tr>
+                        <?php endforeach; ?>
+                    </tbody>
+                </table>
+            </div>
+
+        </main>
+    </div>
+</div>
+
+<!-- Add Modal -->
+<div class="modal fade" id="addModal" tabindex="-1" aria-labelledby="addModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="addModalLabel">Add Function</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <form action="_add_function.php" method="post">
+        <div class="modal-body">
+            <div class="mb-3">
+                <label for="addName" class="form-label">Name</label>
+                <input type="text" class="form-control" id="addName" name="name" required>
+            </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+          <button type="submit" name="add" class="btn btn-primary">Add</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+
+<!-- Edit Modal -->
+<div class="modal fade" id="editModal" tabindex="-1" aria-labelledby="editModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="editModalLabel">Edit Function</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <form action="_update_function.php" method="post">
+        <div class="modal-body">
+            <input type="hidden" id="editId" name="id">
+            <div class="mb-3">
+                <label for="editName" class="form-label">Name</label>
+                <input type="text" class="form-control" id="editName" name="name" required>
+            </div>
+        </div>
+        <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+          <button type="submit" name="edit" class="btn btn-primary">Save changes</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+
+<!-- Delete Modal -->
+<div class="modal fade" id="deleteModal" tabindex="-1" aria-labelledby="deleteModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="deleteModalLabel">Delete Function</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <div class="modal-body">
+        Are you sure you want to delete this function?
+      </div>
+      <div class="modal-footer">
+        <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
+        <a href="#" id="deleteLink" class="btn btn-danger">Delete</a>
+      </div>
+    </div>
+  </div>
+</div>
+
+
+<?php include '_footer.php'; ?>
+<script>
+document.addEventListener('DOMContentLoaded', function () {
+    var editModal = document.getElementById('editModal');
+    editModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        var id = button.getAttribute('data-id');
+        var name = button.getAttribute('data-name');
+        
+        var modalTitle = editModal.querySelector('.modal-title');
+        var idInput = editModal.querySelector('#editId');
+        var nameInput = editModal.querySelector('#editName');
+        
+        idInput.value = id;
+        nameInput.value = name;
+    });
+
+    var deleteModal = document.getElementById('deleteModal');
+    deleteModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        var id = button.getAttribute('data-id');
+        var deleteLink = deleteModal.querySelector('#deleteLink');
+        deleteLink.href = '_delete_function.php?id=' + id;
+    });
+
+    $(function() {
+        $("#sortable-list").sortable({
+            handle: ".handle",
+            update: function(event, ui) {
+                var order = $(this).sortable('toArray', {attribute: 'data-id'});
+                $.post('_update_function_order.php', { order: order });
+            }
+        }).disableSelection();
+    });
+});
+</script>
--- a/index.php
+++ b/index.php
@ -1,150 +1,574 @@
 <?php
-declare(strict_types=1);
-@ini_set('display_errors', '1');
-@error_reporting(E_ALL);
-@date_default_timezone_set('UTC');
+require_once 'WorkflowEngine.php';
+
+$workflowEngine = new WorkflowEngine();
+$dashboardData = $workflowEngine->getDashboardMatrix();
+
+$people = $dashboardData['people'];
+$processes = $dashboardData['definitions'];
+$instances = $dashboardData['instances'];
+
+$status_colors = [
+    'none' => 'secondary',
+    'negative' => 'danger',
+    'in_progress' => 'warning',
+    'positive' => 'success',
+];
+
+$pdo = db();
+$stmt_functions = $pdo->query("SELECT * FROM functions ORDER BY display_order");
+$all_functions = $stmt_functions->fetchAll(PDO::FETCH_ASSOC);
+
+$functions_by_id = [];
+foreach ($all_functions as $function) {
+    $functions_by_id[$function['id']] = $function['name'];
+}
+
+$stmt_person_functions = $pdo->query("SELECT user_id, function_id FROM user_functions");
+$person_functions_map = [];
+while ($row = $stmt_person_functions->fetch(PDO::FETCH_ASSOC)) {
+    $person_functions_map[$row['user_id']][] = $row['function_id'];
+}

-$phpVersion = PHP_VERSION;
-$now = date('Y-m-d H:i:s');
 ?>
-<!doctype html>
-<html lang="en">
-<head>
-  <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1" />
-  <title>New Style</title>
-<?php
-// Read project preview data from environment
-$projectDescription = $_SERVER['PROJECT_DESCRIPTION'] ?? '';
-$projectImageUrl = $_SERVER['PROJECT_IMAGE_URL'] ?? '';
-?>
-<?php if ($projectDescription): ?>
-  <!-- Meta description -->
-  <meta name="description" content='<?= htmlspecialchars($projectDescription) ?>' />
-  <!-- Open Graph meta tags -->
-  <meta property="og:description" content="<?= htmlspecialchars($projectDescription) ?>" />
-  <!-- Twitter meta tags -->
-  <meta property="twitter:description" content="<?= htmlspecialchars($projectDescription) ?>" />
-<?php endif; ?>
-<?php if ($projectImageUrl): ?>
-  <!-- Open Graph image -->
-  <meta property="og:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
-  <!-- Twitter image -->
-  <meta property="twitter:image" content="<?= htmlspecialchars($projectImageUrl) ?>" />
-<?php endif; ?>
-  <link rel="preconnect" href="https://fonts.googleapis.com">
-  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700&display=swap" rel="stylesheet">
-  <style>
-    :root {
-      --bg-color-start: #6a11cb;
-      --bg-color-end: #2575fc;
-      --text-color: #ffffff;
-      --card-bg-color: rgba(255, 255, 255, 0.01);
-      --card-border-color: rgba(255, 255, 255, 0.1);
-    }
-    body {
-      margin: 0;
-      font-family: 'Inter', sans-serif;
-      background: linear-gradient(45deg, var(--bg-color-start), var(--bg-color-end));
-      color: var(--text-color);
-      display: flex;
-      justify-content: center;
-      align-items: center;
-      min-height: 100vh;
-      text-align: center;
-      overflow: hidden;
-      position: relative;
-    }
-    body::before {
-      content: '';
-      position: absolute;
-      top: 0;
-      left: 0;
-      width: 100%;
-      height: 100%;
-      background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><path d="M-10 10L110 10M10 -10L10 110" stroke-width="1" stroke="rgba(255,255,255,0.05)"/></svg>');
-      animation: bg-pan 20s linear infinite;
-      z-index: -1;
-    }
-    @keyframes bg-pan {
-      0% { background-position: 0% 0%; }
-      100% { background-position: 100% 100%; }
-    }
-    main {
-      padding: 2rem;
-    }
-    .card {
-      background: var(--card-bg-color);
-      border: 1px solid var(--card-border-color);
-      border-radius: 16px;
-      padding: 2rem;
-      backdrop-filter: blur(20px);
-      -webkit-backdrop-filter: blur(20px);
-      box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
-    }
-    .loader {
-      margin: 1.25rem auto 1.25rem;
-      width: 48px;
-      height: 48px;
-      border: 3px solid rgba(255, 255, 255, 0.25);
-      border-top-color: #fff;
-      border-radius: 50%;
-      animation: spin 1s linear infinite;
-    }
-    @keyframes spin {
-      from { transform: rotate(0deg); }
-      to   { transform: rotate(360deg); }
-    }
-    .hint {
-      opacity: 0.9;
-    }
-    .sr-only {
-      position: absolute;
-      width: 1px; height: 1px;
-      padding: 0; margin: -1px;
-      overflow: hidden;
-      clip: rect(0, 0, 0, 0);
-      white-space: nowrap; border: 0;
-    }
-    h1 {
-      font-size: 3rem;
-      font-weight: 700;
-      margin: 0 0 1rem;
-      letter-spacing: -1px;
-    }
-    p {
-      margin: 0.5rem 0;
-      font-size: 1.1rem;
-    }
-    code {
-      background: rgba(0,0,0,0.2);
-      padding: 2px 6px;
-      border-radius: 4px;
-      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
-    }
-    footer {
-      position: absolute;
-      bottom: 1rem;
-      font-size: 0.8rem;
-      opacity: 0.7;
-    }
-  </style>
-</head>
-<body>
-  <main>
-    <div class="card">
-      <h1>Analyzing your requirements and generating your website…</h1>
-      <div class="loader" role="status" aria-live="polite" aria-label="Applying initial changes">
-        <span class="sr-only">Loading…</span>
-      </div>
-      <p class="hint"><?= ($_SERVER['HTTP_HOST'] ?? '') === 'appwizzy.com' ? 'AppWizzy' : 'Flatlogic' ?> AI is collecting your requirements and applying the first changes.</p>
-      <p class="hint">This page will update automatically as the plan is implemented.</p>
-      <p>Runtime: PHP <code><?= htmlspecialchars($phpVersion) ?></code> — UTC <code><?= htmlspecialchars($now) ?></code></p>
+<?php include '_header.php'; ?>
+<?php include '_navbar.php'; ?>
+
+<div class="container-fluid">
+    <div class="row">
+        <?php include '_sidebar.php'; ?>
+
+        <main class="col-md-9 ms-sm-auto col-lg-10 px-md-4">
+            <?php if (isset($_SESSION['success_message'])): ?>
+            <div class="alert alert-success alert-dismissible fade show mt-3" role="alert">
+                <?= $_SESSION['success_message']; ?>
+                <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+            </div>
+            <?php unset($_SESSION['success_message']); ?>
+            <script>
+                setTimeout(function() {
+                    let alert = document.querySelector('.alert-success');
+                    if (alert) {
+                        new bootstrap.Alert(alert).close();
+                    }
+                }, 5000);
+            </script>
+            <?php endif; ?>
+
+            <?php if (isset($_SESSION['error_message'])): ?>
+            <div class="alert alert-danger alert-dismissible fade show mt-3" role="alert">
+                <?= $_SESSION['error_message']; ?>
+                <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+            </div>
+            <?php unset($_SESSION['error_message']); ?>
+            <script>
+                setTimeout(function() {
+                    let alert = document.querySelector('.alert-danger');
+                    if (alert) {
+                        new bootstrap.Alert(alert).close();
+                    }
+                }, 5000);
+            </script>
+            <?php endif; ?>
+
+            <div class="d-flex justify-content-between align-items-center pt-3 pb-2 mb-3 border-bottom">
+                <h1 class="h2">Process Dashboard</h1>
+                <div class="btn-toolbar mb-2 mb-md-0">
+                    <div class="btn-group me-2" id="bulk-actions-group" style="display: none;">
+                        <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
+                            Bulk Actions
+                        </button>
+                        <ul class="dropdown-menu">
+                            <li><a class="dropdown-item" href="#" data-bs-toggle="modal" data-bs-target="#bulkStatusModal">Bulk Status Update</a></li>
+                            <li><a class="dropdown-item" href="#" data-bs-toggle="modal" data-bs-target="#bulkEventModal">Bulk Add Event</a></li>
+                            <li><a class="dropdown-item" href="#" data-bs-toggle="modal" data-bs-target="#bulkInitModal">Bulk Initialize Instances</a></li>
+                        </ul>
+                    </div>
+                    <button type="button" class="btn btn-success" data-bs-toggle="modal" data-bs-target="#createPersonModal">
+                        Create Person
+                    </button>
+                </div>
+            </div>
+
+            <div class="table-responsive">
+                <table class="table table-bordered table-sm">
+                    <thead>
+                        <tr class="text-center">
+                            <th class="bg-light"><input type="checkbox" id="selectAll"></th>
+                            <th class="bg-light">Person</th>
+                            <?php foreach ($processes as $process): ?>
+                                <th style="writing-mode: vertical-lr;" class="bg-light"><?= htmlspecialchars($process['name']) ?></th>
+                            <?php endforeach; ?>
+                        </tr>
+                    </thead>
+                    <tbody>
+                    <?php foreach ($people as $person): ?>
+                        <tr>
+                            <td><input type="checkbox" class="person-checkbox" name="person_ids[]" value="<?= $person['id'] ?>"></td>
+                            <td class="d-flex justify-content-between align-items-start">
+                                <div>
+                                    <?= htmlspecialchars($person['firstName'] . ' ' . $person['lastName']) ?>
+                                    <br>
+                                    <small class="text-muted"><?= htmlspecialchars($person['companyName']) ?></small>
+                                    <br>
+                                    <small class="text-info fw-bold"><?= htmlspecialchars(ucfirst($person['role'])) ?></small>
+                                    <br>
+                                    <small class="text-muted">
+                                        <?php
+                                        $person_function_names = [];
+                                        if (isset($person_functions_map[$person['id']])) {
+                                            foreach ($person_functions_map[$person['id']] as $function_id) {
+                                                if (isset($functions_by_id[$function_id])) {
+                                                    $person_function_names[] = htmlspecialchars($functions_by_id[$function_id]);
+                                                }
+                                            }
+                                        }
+                                        echo implode(', ', $person_function_names);
+                                        ?>
+                                    </small>
+                                </div>
+                                <div>
+                                    <button class="btn btn-sm btn-secondary edit-btn" data-bs-toggle="modal" data-bs-target="#editPersonModal"
+                                            data-person-id="<?= $person['id'] ?>"
+                                            data-person-name="<?= htmlspecialchars($person['firstName'] . ' ' . $person['lastName']) ?>">
+                                        Edit
+                                    </button>
+                                </div>
+                            </td>
+                            <?php foreach ($processes as $process):
+                                $instance = isset($instances[$person['id']][$process['id']]) ? $instances[$person['id']][$process['id']] : null;
+                                $status = $instance ? $instance['current_status'] : 'none';
+                                $color = $status_colors[$status];
+                                $lastActivity = $instance && $instance['lastActivityAt'] ? date('d/m/y', strtotime($instance['lastActivityAt'])) : '';
+                            ?>
+                            <td class="text-center" data-bs-toggle="modal" data-bs-target="#instanceModal" data-person-id="<?= $person['id'] ?>" data-process-id="<?= $process['id'] ?>" style="cursor: pointer;">
+                                    <span class="badge rounded-circle bg-<?= $color ?>" style="width: 20px; height: 20px; display: inline-block;" title="<?= ucfirst($status) ?>">&nbsp;</span>
+                                    <small class="text-muted d-block"><?= $lastActivity ?></small>
+                                </td>
+                            <?php endforeach; ?>
+                        </tr>
+                    <?php endforeach; ?>
+                    </tbody>
+                </table>
+            </div>
+        </main>
    </div>
-  </main>
-  <footer>
-    Page updated: <?= htmlspecialchars($now) ?> (UTC)
-  </footer>
-</body>
-</html>
+</div>
+
+<!-- Edit Person Modal -->
+<div class="modal fade" id="editPersonModal" tabindex="-1" aria-labelledby="editPersonModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-xl">
+        <div class="modal-content">
+            <form id="editPersonForm" action="_update_person.php" method="post">
+                <div class="modal-header">
+                    <h5 class="modal-title" id="editPersonModalLabel">Edytuj osobę</h5>
+                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Zamknij"></button>
+                </div>
+                <div class="modal-body">
+                    <input type="hidden" name="id" id="editPersonId">
+                    <div class="row">
+                        <div class="col-md-6">
+                            <div class="mb-3">
+                                <label for="editFirstName" class="form-label">Imię</label>
+                                <input type="text" class="form-control" id="editFirstName" name="firstName" required>
+                            </div>
+                            <div class="mb-3">
+                                <label for="editLastName" class="form-label">Nazwisko</label>
+                                <input type="text" class="form-control" id="editLastName" name="lastName" required>
+                            </div>
+                            <div class="mb-3">
+                                <label for="editCompanyName" class="form-label">Nazwa firmy</label>
+                                <input type="text" class="form-control" id="editCompanyName" name="companyName">
+                            </div>
+                            <div class="mb-3">
+                                <label for="editPhone" class="form-label">Numer telefonu</label>
+                                <input type="text" class="form-control" id="editPhone" name="phone">
+                            </div>
+                        </div>
+                        <div class="col-md-6">
+                            <div class="mb-3">
+                                <label for="editEmail" class="form-label">Email (login)</label>
+                                <input type="email" class="form-control" id="editEmail" name="email">
+                            </div>
+                            <div class="mb-3">
+                                <label for="editPassword" class="form-label">Nowe hasło</label>
+                                <input type="password" class="form-control" id="editPassword" name="password">
+                                <small class="form-text text-muted">Pozostaw puste, jeśli nie chcesz zmieniać hasła.</small>
+                            </div>
+                             <div class="mb-3">
+                                <label for="editRole" class="form-label">Rola</label>
+                                <select class="form-select" id="editRole" name="role" required>
+                                    <option value="admin">Admin</option>
+                                    <option value="member">Członek</option>
+                                    <option value="guest">Gość</option>
+                                    <option value="team_member">Pracownik Biura</option>
+                                </select>
+                            </div>
+                             <div class="mb-3">
+                                <label for="editRoles" class="form-label">Funkcje</label>
+                                <select class="form-select" id="editRoles" name="functions[]" multiple size="5">
+                                    <!-- Opcje zostaną wstawione przez JavaScript -->
+                                </select>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                <div class="modal-footer">
+                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Zamknij</button>
+                    <button type="submit" class="btn btn-primary">Zapisz zmiany</button>
+                    <button type="button" class="btn btn-danger ms-auto" id="deleteUserBtn" data-bs-toggle="modal" data-bs-target="#deletePersonModal">Usuń</button>
+                </div>
+            </form>
+        </div>
+    </div>
+</div>
+
+<!-- Create Person Modal -->
+<div class="modal fade" id="createPersonModal" tabindex="-1" aria-labelledby="createPersonModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-xl">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="createPersonModalLabel">Create Person</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+            </div>
+            <div class="modal-body">
+                <form id="createPersonForm" action="_create_person.php" method="post">
+                    <div class="row">
+                        <div class="col-md-6">
+                            <div class="mb-3">
+                                <label for="createFirstName" class="form-label">First Name <span class="text-danger">*</span></label>
+                                <input type="text" class="form-control" id="createFirstName" name="firstName" required>
+                            </div>
+                            <div class="mb-3">
+                                <label for="createLastName" class="form-label">Last Name <span class="text-danger">*</span></label>
+                                <input type="text" class="form-control" id="createLastName" name="lastName" required>
+                            </div>
+                            <div class="mb-3">
+                                <label for="createCompanyName" class="form-label">Company Name</label>
+                                <input type="text" class="form-control" id="createCompanyName" name="companyName">
+                            </div>
+                            <div class="mb-3">
+                                <label for="createPhone" class="form-label">Phone Number</label>
+                                <input type="text" class="form-control" id="createPhone" name="phone">
+                            </div>
+                        </div>
+                        <div class="col-md-6">
+                            <div class="mb-3">
+                                <label for="createEmail" class="form-label">Email (Login) <span class="text-danger">*</span></label>
+                                <input type="email" class="form-control" id="createEmail" name="email" required>
+                            </div>
+                            <div class="mb-3">
+                                <label for="createPassword" class="form-label">Password <span class="text-danger">*</span></label>
+                                <input type="password" class="form-control" id="createPassword" name="password" required>
+                            </div>
+                            <div class="mb-3">
+                                <label for="createRole" class="form-label">Rola</label>
+                                <select class="form-select" id="createRole" name="role" required>
+                                    <option value="admin">Admin</option>
+                                    <option value="member" selected>Członek</option>
+                                    <option value="guest">Gość</option>
+                                    <option value="team_member">Pracownik Biura</option>
+                                </select>
+                            </div>
+                            <div class="mb-3">
+                                <label for="createRoles" class="form-label">Funkcje</label>
+                                <select class="form-select" id="createRoles" name="functions[]" multiple size="5">
+                                    <?php foreach ($all_functions as $function): ?>
+                                        <option value="<?= $function['id'] ?>"><?= htmlspecialchars($function['name']) ?></option>
+                                    <?php endforeach; ?>
+                                </select>
+                            </div>
+                        </div>
+                    </div>
+                    <button type="submit" class="btn btn-primary">Create Person</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- Delete Person Modal -->
+<div class="modal fade" id="deletePersonModal" tabindex="-1" aria-labelledby="deletePersonModalLabel" aria-hidden="true">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="deletePersonModalLabel">Potwierdź usunięcie</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Zamknij"></button>
+            </div>
+            <div class="modal-body">
+                Czy na pewno chcesz usunąć użytkownika <strong id="personNameToDelete"></strong>? Tej operacji nie można cofnąć.
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Anuluj</button>
+                <button type="button" class="btn btn-danger" id="confirmDeleteBtn">Tak, usuń</button>
+            </div>
+        </div>
+    </div>
+</div>
+
+
+<?php include '_footer.php'; ?>
+
+<!-- Instance Modal -->
+<div class="modal fade" id="instanceModal" tabindex="-1" aria-labelledby="instanceModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="instanceModalLabel">Process Details</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+            </div>
+            <div class="modal-body">
+                <!-- Content will be loaded here via AJAX -->
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
+            </div>
+        </div>
+    </div>
+</div>
+
+<script>
+document.addEventListener('DOMContentLoaded', function () {
+    var instanceModal = document.getElementById('instanceModal');
+    instanceModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        var personId = button.dataset.personId;
+        var processId = button.dataset.processId;
+        var modalBody = instanceModal.querySelector('.modal-body');
+
+        // Load content via AJAX
+        fetch(`_get_instance_details.php?personId=${personId}&processId=${processId}`)
+            .then(response => response.text())
+            .then(html => {
+                modalBody.innerHTML = html;
+            });
+    });
+
+    // Bulk actions
+    const selectAll = document.getElementById('selectAll');
+    const checkboxes = document.querySelectorAll('.person-checkbox');
+    const bulkActionsGroup = document.getElementById('bulk-actions-group');
+
+    function toggleBulkActions() {
+        const anyChecked = Array.from(checkboxes).some(c => c.checked);
+        bulkActionsGroup.style.display = anyChecked ? 'block' : 'none';
+    }
+
+    selectAll.addEventListener('change', function () {
+        checkboxes.forEach(c => c.checked = selectAll.checked);
+        toggleBulkActions();
+    });
+
+    checkboxes.forEach(c => c.addEventListener('change', toggleBulkActions));
+
+    // Pass selected people to modals
+    function setupBulkModal(modalId, hiddenInputId) {
+        const modal = document.getElementById(modalId);
+        modal.addEventListener('show.bs.modal', function() {
+            const selectedIds = Array.from(checkboxes).filter(c => c.checked).map(c => c.value);
+            document.getElementById(hiddenInputId).value = JSON.stringify(selectedIds);
+        });
+    }
+
+    setupBulkModal('bulkStatusModal', 'bulkStatusPersonIds');
+    setupBulkModal('bulkEventModal', 'bulkEventPersonIds');
+    setupBulkModal('bulkInitModal', 'bulkInitPersonIds');
+
+    // Populate edit person modal
+    const editPersonModal = document.getElementById('editPersonModal');
+    if(editPersonModal) {
+        editPersonModal.addEventListener('show.bs.modal', function (event) {
+            const button = event.relatedTarget;
+            const personId = button.getAttribute('data-person-id');
+            var personName = button.getAttribute('data-person-name');
+
+            var deleteBtn = document.getElementById('deleteUserBtn');
+            deleteBtn.dataset.personId = personId;
+            deleteBtn.dataset.personName = personName;
+
+            fetch('_get_person_details.php?id=' + personId)
+                .then(response => response.json())
+                .then(data => {
+                    document.getElementById('editPersonId').value = data.person.id;
+                    document.getElementById('editFirstName').value = data.person.firstName;
+                    document.getElementById('editLastName').value = data.person.lastName;
+                    document.getElementById('editEmail').value = data.person.email;
+                    document.getElementById('editCompanyName').value = data.person.companyName;
+                    document.getElementById('editPhone').value = data.person.phone;
+                    document.getElementById('editRole').value = data.person.role;
+
+                    const functionsSelect = document.getElementById('editRoles');
+                    functionsSelect.innerHTML = ''; // Clear existing options
+
+                    data.all_functions.forEach(func => {
+                        const option = document.createElement('option');
+                        option.value = func.id;
+                        option.textContent = func.name;
+                        if (data.person_functions.includes(func.id)) {
+                            option.selected = true;
+                        }
+                        functionsSelect.appendChild(option);
+                    });
+                });
+        });
+    }
+
+
+    // When the delete button in the edit modal is clicked, pass the data to the delete confirmation modal
+    document.getElementById('deleteUserBtn').addEventListener('click', function() {
+        var personId = this.dataset.personId;
+        var personName = this.dataset.personName;
+
+        var deletePersonModal = document.getElementById('deletePersonModal');
+        deletePersonModal.querySelector('#personNameToDelete').textContent = personName;
+        deletePersonModal.dataset.personId = personId;
+    });
+
+    // Populate delete person modal
+    var deletePersonModal = document.getElementById('deletePersonModal');
+    deletePersonModal.addEventListener('show.bs.modal', function (event) {
+        var button = event.relatedTarget;
+        if (button.id !== 'deleteUserBtn') { 
+            var personId = button.dataset.personId;
+            var personName = button.dataset.personName;
+            document.getElementById('personNameToDelete').textContent = personName;
+            deletePersonModal.dataset.personId = personId;
+        }
+    });
+
+    document.getElementById('confirmDeleteBtn').addEventListener('click', function() {
+      let personIdToDelete = deletePersonModal.dataset.personId;
+      if (personIdToDelete) {
+        const formData = new FormData();
+        formData.append('person_id', personIdToDelete);
+
+        fetch('_delete_person.php', {
+          method: 'POST',
+          body: formData
+        })
+        .then(response => response.json())
+        .then(data => {
+            const modal = bootstrap.Modal.getInstance(deletePersonModal);
+            modal.hide();
+
+            if (data.success) {
+                window.location.reload();
+            } else {
+                let errorAlert = document.querySelector('.alert-danger');
+                let errorContainer = errorAlert.parentElement;
+                if (!errorAlert) {
+                    errorContainer = document.querySelector('main'); // fallback
+                    const alertHTML = `
+                    <div class="alert alert-danger alert-dismissible fade show mt-3" role="alert">
+                        ${data.error}
+                        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
+                    </div>`;
+                    errorContainer.insertAdjacentHTML('afterbegin', alertHTML);
+                } else {
+                    errorAlert.innerHTML = `${data.error} <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>`;
+                    errorAlert.classList.remove('d-none');
+                }
+            }
+        })
+        .catch(error => {
+            console.error('Error:', error);
+            const modal = bootstrap.Modal.getInstance(deletePersonModal);
+            modal.hide();
+        });
+      }
+    });
+
+});
+</script>
+
+<!-- Bulk Modals -->
+<!-- Bulk Status Update Modal -->
+<div class="modal fade" id="bulkStatusModal" tabindex="-1">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">Bulk Status Update</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <form action="_bulk_update_status.php" method="post">
+                    <input type="hidden" name="person_ids" id="bulkStatusPersonIds">
+                    <div class="mb-3">
+                        <label class="form-label">Process</label>
+                        <select name="process_id" class="form-select" required>
+                            <?php foreach($processes as $process): ?>
+                                <option value="<?= $process['id'] ?>"><?= htmlspecialchars($process['name']) ?></option>
+                            <?php endforeach; ?>
+                        </select>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label">New Status</label>
+                        <select name="status" class="form-select" required>
+                            <option value="none">None</option>
+                            <option value="negative">Negative</option>
+                            <option value="in_progress">In Progress</option>
+                            <option value="positive">Positive</option>
+                        </select>
+                    </div>
+                    <button type="submit" class="btn btn-primary">Update Status</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- Bulk Add Event Modal -->
+<div class="modal fade" id="bulkEventModal" tabindex="-1">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">Bulk Add Event</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                 <form action="_bulk_add_event.php" method="post">
+                    <input type="hidden" name="person_ids" id="bulkEventPersonIds">
+                     <div class="mb-3">
+                        <label class="form-label">Process</label>
+                        <select name="process_id" class="form-select" required>
+                            <?php foreach($processes as $process): ?>
+                                <option value="<?= $process['id'] ?>"><?= htmlspecialchars($process['name']) ?></option>
+                            <?php endforeach; ?>
+                        </select>
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label">Event Description</label>
+                        <textarea name="description" class="form-control" required></textarea>
+                    </div>
+                    <button type="submit" class="btn btn-primary">Add Event</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
+
+<!-- Bulk Initialize Instances Modal -->
+<div class="modal fade" id="bulkInitModal" tabindex="-1">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title">Bulk Initialize Instances</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <form action="_bulk_init_instances.php" method="post">
+                    <input type="hidden" name="person_ids" id="bulkInitPersonIds">
+                     <div class="mb-3">
+                        <label class="form-label">Process</label>                        <select name="process_id" class="form-select" required>
+                            <?php foreach($processes as $process): ?>
+                                <option value="<?= $process['id'] ?>"><?= htmlspecialchars($process['name']) ?></option>
+                            <?php endforeach; ?>
+                        </select>
+                    </div>
+                    <p>This will initialize this process for all selected people if it is not already initialized.</p>
+                    <button type="submit" class="btn btn-primary">Initialize</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
--- a/login.php
+++ b/login.php
@ -0,0 +1,80 @@
+<?php
+session_start();
+require_once 'db/config.php';
+
+$error = '';
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $email = $_POST['email'] ?? '';
+    $password = $_POST['password'] ?? '';
+
+    if (empty($email) || empty($password)) {
+        $error = 'Proszę podać email i hasło.';
+    } else {
+        try {
+            $pdo = db();
+            $stmt = $pdo->prepare("SELECT * FROM people WHERE email = ? AND is_user = TRUE AND active = TRUE");
+            $stmt->execute([$email]);
+            $person = $stmt->fetch();
+
+            if ($person && password_verify($password, $person['password'])) {
+                $_SESSION['user_id'] = $person['id'];
+                $_SESSION['user_email'] = $person['email'];
+                $_SESSION['user_role'] = $person['role'];
+                $_SESSION['user_name'] = $person['firstName'] . ' ' . $person['lastName'];
+                header('Location: index.php');
+                exit;
+            } else {
+                $error = 'Nieprawidłowe dane logowania. Spróbuj ponownie.';
+            }
+        } catch (PDOException $e) {
+            $error = 'Błąd bazy danych: ' . $e->getMessage();
+        }
+    }
+}
+?>
+<!DOCTYPE html>
+<html lang="pl">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Logowanie</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <style>
+        body {
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            height: 100vh;
+            background-color: #f8f9fa;
+        }
+        .login-card {
+            width: 100%;
+            max-width: 400px;
+        }
+    </style>
+</head>
+<body>
+    <div class="card login-card">
+        <div class="card-body">
+            <h3 class="card-title text-center mb-4">Logowanie do systemu</h3>
+            <?php if ($error): ?>
+                <div class="alert alert-danger"><?= htmlspecialchars($error) ?></div>
+            <?php endif; ?>
+            <form method="POST" action="login.php">
+                <div class="mb-3">
+                    <label for="email" class="form-label">Adres email</label>
+                    <input type="email" class="form-control" id="email" name="email" required>
+                </div>
+                <div class="mb-3">
+                    <label for="password" class="form-label">Hasło</label>
+                    <input type="password" class="form-control" id="password" name="password" required>
+                </div>
+                <div class="d-grid">
+                    <button type="submit" class="btn btn-primary">Zaloguj się</button>
+                </div>
+            </form>
+        </div>
+    </div>
+</body>
+</html>
--- a/logout.php
+++ b/logout.php
@ -0,0 +1,6 @@
+<?php
+session_start();
+session_unset();
+session_destroy();
+header('Location: login.php');
+exit;
--- a/migrate.php
+++ b/migrate.php
@ -0,0 +1,62 @@
+<?php
+require_once 'db/config.php';
+
+function run_migrations() {
+    $pdo = db();
+
+    try {
+        // Create migrations table if it doesn't exist
+        $pdo->exec("CREATE TABLE IF NOT EXISTS migrations (id INT AUTO_INCREMENT PRIMARY KEY, migration VARCHAR(255) NOT NULL, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP)");
+
+        // Get all run migrations
+        $stmt = $pdo->query("SELECT migration FROM migrations");
+        $run_migrations = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+        // Get all migration files
+        $migration_files = glob('db/migrations/*.php');
+
+        foreach ($migration_files as $file) {
+            $migration_name = basename($file, '.php');
+
+            if (!in_array($migration_name, $run_migrations)) {
+                echo "Running migration: $migration_name...\n";
+                require_once $file;
+                
+                try {
+                    // Migration functions are named like migrate_001, migrate_002 etc.
+                    $function_name = 'migrate_' . preg_replace('/[^0-9]/', '', $migration_name);
+                    if(function_exists($function_name)){
+                        $function_name($pdo);
+                    } else {
+                        // Fallback for older naming convention
+                        $function_name = str_replace('.php', '', basename($file));
+                        if(function_exists($function_name)) {
+                            $function_name($pdo);
+                        }
+                    }
+    
+                    // Record migration
+                    $stmt = $pdo->prepare("INSERT INTO migrations (migration) VALUES (?)");
+                    $stmt->execute([$migration_name]);
+                    echo "Migration $migration_name has been applied.\n";
+                } catch (PDOException $e) {
+                    echo "Error running migration $migration_name: " . $e->getMessage() . "\n";
+                }
+            } else {
+                echo "Migration $migration_name already applied.\n";
+            }
+        }
+
+        echo "All migrations have been run.\n";
+
+    } catch (PDOException $e) {
+        die("Migration failed: " . $e->getMessage());
+    }
+}
+
+// If the script is run directly from the command line
+if (php_sapi_name() === 'cli') {
+    run_migrations();
+}
+
+
--- a/process_definitions.php
+++ b/process_definitions.php
@ -0,0 +1,158 @@
+<?php
+require_once 'WorkflowEngine.php';
+
+$workflowEngine = new WorkflowEngine();
+// TODO: Create a method in WorkflowEngine to get all process definitions
+$pdo = db();
+$stmt = $pdo->query("SELECT * FROM process_definitions ORDER BY name");
+$processes = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+?>
+<?php include '_header.php'; ?>
+<?php include '_navbar.php'; ?>
+
+<div class="container-fluid">
+    <div class="row">
+        <?php include '_sidebar.php'; ?>
+
+        <main class="col-md-9 ms-sm-auto col-lg-10 px-md-4">
+            <div class="d-flex justify-content-between align-items-center pt-3 pb-2 mb-3 border-bottom">
+                <h1 class="h2">Process Definitions</h1>
+                <div class="btn-toolbar mb-2 mb-md-0">
+                    <button type="button" class="btn btn-success" data-bs-toggle="modal" data-bs-target="#createProcessModal">
+                        Create Process
+                    </button>
+                </div>
+            </div>
+
+            <div class="table-responsive">
+                <table class="table table-bordered table-sm">
+                    <thead>
+                        <tr class="text-center">
+                            <th class="bg-light">Name</th>
+                            <th class="bg-light">Actions</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <?php foreach ($processes as $process): ?>
+                            <tr>
+                                <td><?= htmlspecialchars($process['name']) ?></td>
+                                <td class="text-center">
+                                    <button class="btn btn-sm btn-secondary edit-process-btn" 
+                                            data-process-id="<?= $process['id'] ?>" 
+                                            data-process-name="<?= htmlspecialchars($process['name']) ?>"
+                                            data-process-definition='<?= htmlspecialchars($process['definition_json'] ?? '') ?>'>
+                                        Edit
+                                    </button>
+                                    <!-- TODO: Add delete functionality -->
+                                </td>
+                            </tr>
+                        <?php endforeach; ?>
+                    </tbody>
+                </table>
+            </div>
+        </main>
+    </div>
+</div>
+
+<!-- Create/Edit Process Modal -->
+<div class="modal fade" id="createProcessModal" tabindex="-1" aria-labelledby="createProcessModalLabel" aria-hidden="true">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title" id="createProcessModalLabel">Create Process</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+            </div>
+            <div class="modal-body">
+                <form id="createProcessForm" action="_save_process_definition.php" method="post">
+                    <input type="hidden" name="process_id" id="processId">
+                    <div class="mb-3">
+                        <label for="processName" class="form-label">Process Name</label>
+                        <input type="text" class="form-control" id="processName" name="name" required>
+                    </div>
+                    
+                    <hr>
+
+                    <h5>Statuses</h5>
+                    <div class="row">
+                        <div class="col-md-6">
+                            <div class="mb-3">
+                                <label for="initialStatus" class="form-label">Initial Status</label>
+                                <select class="form-select" id="initialStatus"></select>
+                            </div>
+                        </div>
+                    </div>
+                    <div id="statuses-list" class="mb-3"></div>
+                    <div class="input-group mb-3">
+                        <input type="text" id="newStatusInput" class="form-control" placeholder="New status name">
+                        <button class="btn btn-outline-secondary" type="button" id="addStatusBtn">Add Status</button>
+                    </div>
+
+                    <hr>
+
+                    <h5>Transitions</h5>
+                    <div id="transitions-list" class="mb-3"></div>
+                    <div class="row">
+                        <div class="col-5">
+                            <select id="fromStatusSelect" class="form-select"></select>
+                        </div>
+                        <div class="col-2 text-center">=&gt;</div>
+                        <div class="col-5">
+                            <select id="toStatusSelect" class="form-select"></select>
+                        </div>
+                    </div>
+                     <div class="d-grid gap-2 mt-3">
+                        <button class="btn btn-outline-secondary" type="button" id="addTransitionBtn">Add Transition</button>
+                    </div>
+
+                    <textarea name="definition_json" id="definitionJson" class="d-none"></textarea>
+
+                    <hr class="mt-4">
+
+                    <button type="submit" class="btn btn-primary">Save Process</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
+
+<?php include '_footer.php'; ?>
+
+<script>
+document.addEventListener('DOMContentLoaded', function () {
+    const createProcessModal = document.getElementById('createProcessModal');
+    const modalTitle = createProcessModal.querySelector('.modal-title');
+    const form = createProcessModal.querySelector('#createProcessForm');
+    const processIdInput = createProcessModal.querySelector('#processId');
+    const processNameInput = createProcessModal.querySelector('#processName');
+    const definitionJsonTextarea = createProcessModal.querySelector('#definitionJson');
+
+    // Handle create button click
+    const createButton = document.querySelector('button[data-bs-target="#createProcessModal"]');
+    createButton.addEventListener('click', function() {
+        modalTitle.textContent = 'Create Process';
+        form.action = '_save_process_definition.php';
+        processIdInput.value = '';
+        processNameInput.value = '';
+        definitionJsonTextarea.value = '';
+    });
+
+    // Handle edit button click
+    document.querySelectorAll('.edit-process-btn').forEach(button => {
+        button.addEventListener('click', function() {
+            const processId = this.dataset.processId;
+            const processName = this.dataset.processName;
+            const processDefinition = this.dataset.processDefinition;
+
+            modalTitle.textContent = 'Edit Process';
+            form.action = '_save_process_definition.php';
+            processIdInput.value = processId;
+            processNameInput.value = processName;
+            definitionJsonTextarea.value = processDefinition;
+
+            const modal = new bootstrap.Modal(createProcessModal);
+            modal.show();
+        });
+    });
+});
+</script>
--- a/test.php
+++ b/test.php
@ -0,0 +1,2 @@
+<?php
+phpinfo();
--- a/test3.php
+++ b/test3.php
@ -0,0 +1,16 @@
+<?php
+ini_set('display_errors', 1);
+error_reporting(E_ALL);
+
+session_start();
+
+echo "session_start() called.<br>";
+
+if (!isset($_SESSION['user_id'])) {
+    echo "user_id not set.<br>";
+    // header('Location: login.php');
+    // exit;
+}
+
+echo "end of test";
+?>