refactor(admin): split roadmap page.tsx into colocated components

Split 876-LOC page.tsx into 146 LOC with 7 colocated components
(RoadmapCard, CreateRoadmapModal, CreateItemModal, ImportWizard,
RoadmapDetailView split into header + items table), plus _types.ts,
_constants.ts, and _api.ts. Behavior preserved.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

admin-compliance/app/sdk/roadmap/_components/CreateItemModal.tsx

@@ -0,0 +1,105 @@
+import { useState } from 'react'
+import { api } from '../_api'
+import { categoryLabels } from '../_constants'
+
+export function CreateItemModal({ roadmapId, onClose, onCreated }: {
+  roadmapId: string
+  onClose: () => void
+  onCreated: () => void
+}) {
+  const [title, setTitle] = useState('')
+  const [description, setDescription] = useState('')
+  const [category, setCategory] = useState<string>('TECHNICAL')
+  const [priority, setPriority] = useState<string>('MEDIUM')
+  const [assigneeName, setAssigneeName] = useState('')
+  const [department, setDepartment] = useState('')
+  const [effortDays, setEffortDays] = useState(1)
+  const [saving, setSaving] = useState(false)
+
+  const handleCreate = async () => {
+    if (!title.trim()) return
+    setSaving(true)
+    try {
+      await api(`/${roadmapId}/items`, {
+        method: 'POST',
+        body: JSON.stringify({
+          title: title.trim(),
+          description: description.trim(),
+          category,
+          priority,
+          assignee_name: assigneeName.trim(),
+          department: department.trim(),
+          effort_days: effortDays,
+        }),
+      })
+      onCreated()
+    } catch (err) {
+      console.error('Create item error:', err)
+    } finally {
+      setSaving(false)
+    }
+  }
+
+  return (
+    <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50" onClick={onClose}>
+      <div className="bg-white rounded-2xl p-6 w-full max-w-lg max-h-[90vh] overflow-y-auto" onClick={e => e.stopPropagation()}>
+        <h3 className="text-lg font-bold text-gray-900 mb-4">Neues Item</h3>
+        <div className="space-y-4">
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">Titel *</label>
+            <input type="text" value={title} onChange={e => setTitle(e.target.value)}
+              className="w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-transparent" />
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-gray-700 mb-1">Beschreibung</label>
+            <textarea value={description} onChange={e => setDescription(e.target.value)}
+              className="w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-purple-500 focus:border-transparent" rows={2} />
+          </div>
+          <div className="grid grid-cols-2 gap-4">
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Kategorie</label>
+              <select value={category} onChange={e => setCategory(e.target.value)}
+                className="w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-purple-500">
+                {Object.entries(categoryLabels).map(([k, v]) => <option key={k} value={k}>{v}</option>)}
+              </select>
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Prioritaet</label>
+              <select value={priority} onChange={e => setPriority(e.target.value)}
+                className="w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-purple-500">
+                <option value="CRITICAL">Kritisch</option>
+                <option value="HIGH">Hoch</option>
+                <option value="MEDIUM">Mittel</option>
+                <option value="LOW">Niedrig</option>
+              </select>
+            </div>
+          </div>
+          <div className="grid grid-cols-3 gap-4">
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Zustaendig</label>
+              <input type="text" value={assigneeName} onChange={e => setAssigneeName(e.target.value)}
+                className="w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-purple-500" />
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Abteilung</label>
+              <input type="text" value={department} onChange={e => setDepartment(e.target.value)}
+                className="w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-purple-500" />
+            </div>
+            <div>
+              <label className="block text-sm font-medium text-gray-700 mb-1">Aufwand (Tage)</label>
+              <input type="number" value={effortDays} onChange={e => setEffortDays(Number(e.target.value))}
+                className="w-full px-3 py-2 border rounded-lg focus:ring-2 focus:ring-purple-500" min={0} />
+            </div>
+          </div>
+        </div>
+        <div className="flex justify-end gap-3 mt-6">
+          <button onClick={onClose} className="px-4 py-2 text-sm text-gray-600 hover:bg-gray-100 rounded-lg">Abbrechen</button>
+          <button onClick={handleCreate} disabled={!title.trim() || saving}
+            className="px-4 py-2 text-sm bg-purple-600 text-white rounded-lg hover:bg-purple-700 disabled:opacity-50">
+            {saving ? 'Erstelle...' : 'Erstellen'}
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}