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>

src/admin/pages/ProjectCreate.jsx

@@ -20,8 +20,10 @@ export default function ProjectCreate() {
     name: '',
     customer_id: null,
     customer_name: '',
-    start_date: new Date().toISOString().split('T')[0]
+    start_date: new Date().toISOString().split('T')[0],
+    responsible_user_id: ''
   })
+  const [users, setUsers] = useState([])
   const [saving, setSaving] = useState(false)
   const [errors, setErrors] = useState({})
   const [loadingNumber, setLoadingNumber] = useState(true)
@@ -35,9 +37,10 @@ export default function ProjectCreate() {
   useEffect(() => {
     const load = async () => {
       try {
-        const [numRes, custRes] = await Promise.all([
+        const [numRes, custRes, usersRes] = await Promise.all([
           apiFetch(`${API_BASE}/projects.php?action=next_number`),
-          apiFetch(`${API_BASE}/customers.php`)
+          apiFetch(`${API_BASE}/customers.php`),
+          apiFetch(`${API_BASE}/projects.php?action=users`)
         ])
 
         const numData = await numRes.json()
@@ -49,6 +52,11 @@ export default function ProjectCreate() {
         if (custData.success) {
           setCustomers(custData.data.customers)
         }
+
+        const usersData = await usersRes.json()
+        if (usersData.success) {
+          setUsers(usersData.data.users)
+        }
       } catch {
         alert.error('Chyba při načítání dat')
       } finally {
@@ -109,7 +117,8 @@ export default function ProjectCreate() {
         name: form.name.trim(),
         customer_id: form.customer_id,
         start_date: form.start_date,
-        project_number: form.project_number.trim()
+        project_number: form.project_number.trim(),
+        responsible_user_id: form.responsible_user_id || null
       }
 
       const res = await apiFetch(`${API_BASE}/projects.php`, {
@@ -263,6 +272,21 @@ export default function ProjectCreate() {
                 />
               </FormField>
             </div>
+
+            <div className="admin-form-row">
+              <FormField label="Zodpovědná osoba">
+                <select
+                  value={form.responsible_user_id}
+                  onChange={(e) => updateForm('responsible_user_id', e.target.value)}
+                  className="admin-form-select"
+                >
+                  <option value="">— Nevybráno —</option>
+                  {users.map(u => (
+                    <option key={u.id} value={u.id}>{u.name}</option>
+                  ))}
+                </select>
+              </FormField>
+            </div>
           </div>
         </div>
       </motion.div>

src/admin/pages/ProjectDetail.jsx

@@ -42,8 +42,10 @@ export default function ProjectDetail() {
     name: '',
     status: 'aktivni',
     start_date: '',
-    end_date: ''
+    end_date: '',
+    responsible_user_id: ''
   })
+  const [users, setUsers] = useState([])
 
   const [deleteConfirm, setDeleteConfirm] = useState(false)
   const [deleting, setDeleting] = useState(false)
@@ -91,7 +93,8 @@ export default function ProjectDetail() {
             name: p.name || '',
             status: p.status || 'aktivni',
             start_date: (p.start_date || '').substring(0, 10),
-            end_date: (p.end_date || '').substring(0, 10)
+            end_date: (p.end_date || '').substring(0, 10),
+            responsible_user_id: p.responsible_user_id || ''
           })
         } else {
           alert.error(result.error || 'Nepodařilo se načíst projekt')
@@ -104,8 +107,22 @@ export default function ProjectDetail() {
         setLoading(false)
       }
     }
+    const fetchUsers = async () => {
+      try {
+        const res = await apiFetch(`${API_BASE}/projects.php?action=users`)
+        if (res.status === 401) return
+        const data = await res.json()
+        if (data.success) {
+          setUsers(data.data.users || [])
+        }
+      } catch {
+        // silent
+      }
+    }
+
     fetchDetail()
     fetchNotes()
+    fetchUsers()
   }, [id, alert, navigate]) // eslint-disable-line react-hooks/exhaustive-deps
 
   if (!hasPermission('projects.view')) return <Forbidden />
@@ -127,7 +144,8 @@ export default function ProjectDetail() {
           name: form.name,
           status: form.status,
           start_date: form.start_date || null,
-          end_date: form.end_date || null
+          end_date: form.end_date || null,
+          responsible_user_id: form.responsible_user_id || null
         })
       })
       const result = await response.json()
@@ -332,6 +350,22 @@ export default function ProjectDetail() {
                   style={{ backgroundColor: 'var(--bg-secondary)', cursor: 'default' }}
                 />
               </FormField>
+              <FormField label="Zodpovědná osoba">
+                <select
+                  value={form.responsible_user_id}
+                  onChange={(e) => updateForm('responsible_user_id', e.target.value)}
+                  className="admin-form-select"
+                  disabled={!canEdit}
+                >
+                  <option value="">— Nevybráno —</option>
+                  {users.map(u => (
+                    <option key={u.id} value={u.id}>{u.name}</option>
+                  ))}
+                </select>
+              </FormField>
+            </div>
+
+            <div className="admin-form-row admin-form-row-3">
               <FormField label="Stav">
                 <select
                   value={form.status}
@@ -344,9 +378,6 @@ export default function ProjectDetail() {
                   <option value="zruseny">Zrušený</option>
                 </select>
               </FormField>
-            </div>
-
-            <div className="admin-form-row">
               <FormField label="Datum zahájení">
                 <AdminDatePicker
                   mode="date"

src/admin/pages/Projects.jsx

@@ -189,6 +189,7 @@ export default function Projects() {
                       Název <SortIcon column="name" sort={activeSort} order={order} />
                     </th>
                     <th>Zákazník</th>
+                    <th>Zodpovědná osoba</th>
                     <th style={{ cursor: 'pointer' }} onClick={() => handleSort('status')}>
                       Stav <SortIcon column="status" sort={activeSort} order={order} />
                     </th>
@@ -212,6 +213,7 @@ export default function Projects() {
                       </td>
                       <td className="fw-500">{p.name || '—'}</td>
                       <td>{p.customer_name || '—'}</td>
+                      <td>{p.responsible_user_name || '—'}</td>
                       <td>
                         <span className={`admin-badge ${STATUS_CLASSES[p.status] || ''}`}>
                           {STATUS_LABELS[p.status] || p.status}