fix: resolve 4 QA bugs found in Docker production build

- fix(member-management): Zod v4 .partial() on refined schema crash
  Separated CreateMemberBaseSchema from superRefine so .partial()
  works for UpdateMemberSchema. Fixes members-cms page crash.

- fix(course-management): snake_case→camelCase stats normalization
  getQuickStats RPC returns snake_case keys but templates expect
  camelCase. Added normalization layer so stats cards display values.

- fix(blog): add missing cover images for 5 German blog posts
  Posts referenced /images/posts/*.webp that didn't exist.

- fix(docker): remove non-existent catch_entries table from bootstrap
  dev-bootstrap.sh granted permissions on catch_entries which has no
  migration. Removed the stale reference.

- docs: add qa-checklist.md with full test report

packages/features/course-management/src/server/services/course-statistics.service.ts

@@ -13,21 +13,31 @@ export function createCourseStatisticsService(
         { p_account_id: accountId },
       );
       if (error) throw error;
-      // RPC returns a single row as an array
-      const stats = Array.isArray(data) ? data[0] : data;
-      return (
-        stats ?? {
-          total_courses: 0,
-          open_courses: 0,
-          running_courses: 0,
-          completed_courses: 0,
-          cancelled_courses: 0,
-          total_participants: 0,
-          total_waitlisted: 0,
-          avg_occupancy_rate: 0,
-          total_revenue: 0,
-        }
-      );
+      // RPC returns a single row as an array with snake_case keys
+      const raw = Array.isArray(data) ? data[0] : data;
+      const s = raw ?? {
+        total_courses: 0,
+        open_courses: 0,
+        running_courses: 0,
+        completed_courses: 0,
+        cancelled_courses: 0,
+        total_participants: 0,
+        total_waitlisted: 0,
+        avg_occupancy_rate: 0,
+        total_revenue: 0,
+      };
+      // Normalise to camelCase for consumers
+      return {
+        totalCourses: s.total_courses ?? s.totalCourses ?? 0,
+        openCourses: s.open_courses ?? s.openCourses ?? 0,
+        runningCourses: s.running_courses ?? s.runningCourses ?? 0,
+        completedCourses: s.completed_courses ?? s.completedCourses ?? 0,
+        cancelledCourses: s.cancelled_courses ?? s.cancelledCourses ?? 0,
+        totalParticipants: s.total_participants ?? s.totalParticipants ?? 0,
+        totalWaitlisted: s.total_waitlisted ?? s.totalWaitlisted ?? 0,
+        avgOccupancyRate: s.avg_occupancy_rate ?? s.avgOccupancyRate ?? 0,
+        totalRevenue: s.total_revenue ?? s.totalRevenue ?? 0,
+      };
     },
 
     async getAttendanceSummary(courseId: string) {