feat: zodpovedna osoba za projekt - novy sloupec + editace

Pridano pole responsible_user_id do tabulky projects s FK na users.
Select zodpovedne osoby v ProjectDetail, ProjectCreate a sloupec v seznamu projektu.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

api/admin/handlers/projects-handlers.php

@@ -7,6 +7,16 @@ function generateProjectNumber(PDO $pdo): string
     return generateSharedNumber($pdo);
 }
 
+function handleGetUsers(PDO $pdo): void
+{
+    $stmt = $pdo->query(
+        "SELECT id, CONCAT(first_name, ' ', last_name) as name
+        FROM users WHERE is_active = 1 ORDER BY first_name, last_name"
+    );
+    $users = $stmt->fetchAll();
+    successResponse(['users' => $users]);
+}
+
 function handleGetNextNumber(PDO $pdo): void
 {
     $number = generateProjectNumber($pdo);
@@ -37,6 +47,15 @@ function handleCreateProject(PDO $pdo): void
         errorResponse('Zákazník nebyl nalezen', 404);
     }
 
+    $responsibleUserId = isset($input['responsible_user_id']) ? (int)$input['responsible_user_id'] : null;
+    if ($responsibleUserId) {
+        $stmt = $pdo->prepare('SELECT id FROM users WHERE id = ?');
+        $stmt->execute([$responsibleUserId]);
+        if (!$stmt->fetch()) {
+            errorResponse('Zodpovědná osoba nebyla nalezena', 404);
+        }
+    }
+
     $startDate = $input['start_date'] ?? date('Y-m-d');
     if (!preg_match('/^\d{4}-\d{2}-\d{2}$/', $startDate)) {
         errorResponse('Neplatný formát data zahájení');
@@ -79,14 +98,15 @@ function handleCreateProject(PDO $pdo): void
 
         $stmt = $pdo->prepare("
             INSERT INTO projects (
-                project_number, name, customer_id,
+                project_number, name, customer_id, responsible_user_id,
                 status, start_date, created_at, modified_at
-            ) VALUES (?, ?, ?, 'aktivni', ?, NOW(), NOW())
+            ) VALUES (?, ?, ?, ?, 'aktivni', ?, NOW(), NOW())
         ");
         $stmt->execute([
             $projectNumber,
             $name,
             $customerId,
+            $responsibleUserId,
             $startDate,
         ]);
         $projectId = (int)$pdo->lastInsertId();
@@ -185,15 +205,17 @@ function handleGetList(PDO $pdo): void
 
     $from = "FROM projects p
         LEFT JOIN customers c ON p.customer_id = c.id
-        LEFT JOIN orders o ON p.order_id = o.id";
+        LEFT JOIN orders o ON p.order_id = o.id
+        LEFT JOIN users u ON p.responsible_user_id = u.id";
 
     $result = PaginationHelper::paginate(
         $pdo,
         "SELECT COUNT(*) {$from} {$where}",
         "SELECT p.id, p.project_number, p.name, p.status, p.start_date, p.end_date,
-               p.order_id, p.quotation_id, p.created_at,
+               p.order_id, p.quotation_id, p.created_at, p.responsible_user_id,
                c.name as customer_name,
-               o.order_number
+               o.order_number,
+               CONCAT(u.first_name, ' ', u.last_name) as responsible_user_name
         {$from} {$where}
         ORDER BY {$p['sort']} {$p['order']}",
         $params,
@@ -212,14 +234,17 @@ function handleGetDetail(PDO $pdo, int $id): void
         SELECT p.id, p.project_number, p.name, p.customer_id,
                p.quotation_id, p.order_id, p.status,
                p.start_date, p.end_date, p.notes,
+               p.responsible_user_id,
                p.created_at, p.modified_at,
                c.name as customer_name,
                o.order_number, o.status as order_status,
-               q.quotation_number
+               q.quotation_number,
+               CONCAT(u.first_name, \' \', u.last_name) as responsible_user_name
         FROM projects p
         LEFT JOIN customers c ON p.customer_id = c.id
         LEFT JOIN orders o ON p.order_id = o.id
         LEFT JOIN quotations q ON p.quotation_id = q.id
+        LEFT JOIN users u ON p.responsible_user_id = u.id
         WHERE p.id = ?
     ');
     $stmt->execute([$id]);
@@ -235,7 +260,7 @@ function handleGetDetail(PDO $pdo, int $id): void
 function handleUpdateProject(PDO $pdo, int $id): void
 {
     $stmt = $pdo->prepare(
-        'SELECT id, project_number, name, status, start_date, end_date, notes
+        'SELECT id, project_number, name, status, start_date, end_date, notes, responsible_user_id
         FROM projects WHERE id = ?'
     );
     $stmt->execute([$id]);
@@ -282,6 +307,18 @@ function handleUpdateProject(PDO $pdo, int $id): void
         errorResponse('Poznámky jsou příliš dlouhé (max 5000 znaků)');
     }
 
+    // Zodpovedna osoba
+    $responsibleUserId = array_key_exists('responsible_user_id', $input)
+        ? ($input['responsible_user_id'] ? (int)$input['responsible_user_id'] : null)
+        : $project['responsible_user_id'];
+    if ($responsibleUserId) {
+        $stmt = $pdo->prepare('SELECT id FROM users WHERE id = ?');
+        $stmt->execute([$responsibleUserId]);
+        if (!$stmt->fetch()) {
+            errorResponse('Zodpovědná osoba nebyla nalezena', 404);
+        }
+    }
+
     $pdo->beginTransaction();
     try {
         $stmt = $pdo->prepare('
@@ -291,6 +328,7 @@ function handleUpdateProject(PDO $pdo, int $id): void
                 start_date = ?,
                 end_date = ?,
                 notes = ?,
+                responsible_user_id = ?,
                 modified_at = NOW()
             WHERE id = ?
         ');
@@ -300,6 +338,7 @@ function handleUpdateProject(PDO $pdo, int $id): void
             $input['start_date'] ?? $project['start_date'],
             $input['end_date'] ?? $project['end_date'],
             $notes,
+            $responsibleUserId,
             $id,
         ]);