fix: Remove broken table_exists check

Removed faulty EXISTS check that was causing "0" error.
Added debug logging and better error messages.

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

backend/routers/goals.py

@@ -504,26 +504,10 @@ def list_goal_type_definitions(session: dict = Depends(require_auth)):
         with get_db() as conn:
             cur = get_cursor(conn)
 
-            # Check if table exists first
-            cur.execute("""
-                SELECT EXISTS (
-                    SELECT FROM information_schema.tables
-                    WHERE table_name = 'goal_type_definitions'
-                )
-            """)
-            table_exists = cur.fetchone()[0]
-
-            if not table_exists:
-                print("[ERROR] goal_type_definitions table does not exist!")
-                raise HTTPException(
-                    status_code=500,
-                    detail="Goal Types Tabelle existiert nicht. Migration 024 muss ausgeführt werden."
-                )
-
             cur.execute("""
                 SELECT id, type_key, label_de, label_en, unit, icon, category,
                        source_table, source_column, aggregation_method,
-                       calculation_formula, description, is_system,
+                       calculation_formula, description, is_system, is_active,
                        created_at, updated_at
                 FROM goal_type_definitions
                 WHERE is_active = true
@@ -535,9 +519,10 @@ def list_goal_type_definitions(session: dict = Depends(require_auth)):
                     label_de
             """)
 
-            return [r2d(row) for row in cur.fetchall()]
-    except HTTPException:
-        raise
+            results = [r2d(row) for row in cur.fetchall()]
+            print(f"[DEBUG] Loaded {len(results)} goal types")
+            return results
+
     except Exception as e:
         print(f"[ERROR] list_goal_type_definitions failed: {e}")
         print(traceback.format_exc())

frontend/src/pages/AdminGoalTypesPage.jsx

@@ -40,11 +40,14 @@ export default function AdminGoalTypesPage() {
 
   const loadGoalTypes = async () => {
     setLoading(true)
+    setError(null)
     try {
       const data = await api.listGoalTypeDefinitions()
-      setGoalTypes(data)
+      console.log('[DEBUG] Loaded goal types:', data)
+      setGoalTypes(data || [])
     } catch (err) {
-      setError('Fehler beim Laden der Goal Types')
+      console.error('[ERROR] Failed to load goal types:', err)
+      setError(`Fehler beim Laden der Goal Types: ${err.message || err.toString()}`)
     } finally {
       setLoading(false)
     }