Mehrere Auswahlen in einem Objekt speichern

- Neues JSON-Feld 'selections' in Directus objects-Collection
- Alle Auswahlen (bbox/polygon) landen in einem einzigen Objekt
- Erste Auswahl bleibt weiterhin in bbox/polygon für Kompatibilität
- GET-Proxy liefert selections-Feld mit aus

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

app.py

@@ -79,7 +79,7 @@ def directus_objects():
     token = request.headers.get("Authorization", "")
     if request.method == "GET":
         picture_id = request.args.get("picture_id", "")
-        fields = "id,bbox,polygon,user_notes,parent,status,picture"
+        fields = "id,bbox,polygon,selections,user_notes,parent,status,picture"
         path = f"/items/objects?filter[picture][_eq]={picture_id}&fields={fields}&sort=date_created"
         data, status = _directus("GET", path, token)
         return jsonify(data), status

frontend/src/api.ts

@@ -47,6 +47,7 @@ export async function createDirectusObject(payload: {
   picture: string
   bbox: BBox | null
   polygon: Point[] | null
+  selections: import('./types').Selection[] | null
   user_notes: string | null
   parent: string | null
 }, token: string): Promise<DirectusObject> {

frontend/src/pages/DrawIt.tsx

@@ -88,24 +88,21 @@ export default function DrawIt() {
     if (!currentPicture || !token || currentSelections.length === 0) return
     setSaving(true)
     try {
-      // Save one object per selection
-      const newObjs: DirectusObject[] = []
-      for (const sel of currentSelections) {
+      const first = currentSelections[0]
       const obj = await createDirectusObject({
         picture: currentPicture.id,
-          bbox: sel.mode === 'rect' ? (sel.bbox ?? null) : null,
-          polygon: sel.mode === 'polygon' ? (sel.polygon ?? null) : null,
+        bbox: first.mode === 'rect' ? (first.bbox ?? null) : null,
+        polygon: first.mode === 'polygon' ? (first.polygon ?? null) : null,
+        selections: currentSelections,
         user_notes: userNotes.trim() || null,
         parent: parentId,
       }, token)
-        newObjs.push({ ...obj, visible: true })
-      }
-      setObjects(prev => [...prev, ...newObjs])
+      setObjects(prev => [...prev, { ...obj, visible: true }])
       setCurrentSelections([])
       setUserNotes('')
       setParentId(null)
       canvasRef.current?.resetSelection()
-      showStatus(`${newObjs.length} Objekt(e) gespeichert.`)
+      showStatus('Objekt gespeichert.')
     } catch (e) {
       showStatus(e instanceof Error ? e.message : 'Fehler beim Speichern.', true)
     } finally {

frontend/src/types.ts

@@ -42,6 +42,7 @@ export interface DirectusObject {
   picture: string
   bbox: BBox | null
   polygon: Point[] | null
+  selections: Selection[] | null
   user_notes: string | null
   parent: string | null
   visible?: boolean  // local UI state only