docs(05-04): complete job detail page plan

Summary documents single job post access control implementation,
completing Phase 5 backend infrastructure. Elementor template creation
is manual UI work through WordPress admin.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.planning/phases/05-mentor-job-board/05-04-SUMMARY.md

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+# Phase 5 Plan 4: Job Detail Page Summary
+
+**Single job posts now protected from public access, completing backend infrastructure for mentor job board**
+
+## Accomplishments
+
+- Added single job post access control following the same pattern as job archive protection
+- Non-logged-in users are redirected to /anbieter-login/ when attempting to access individual job posts
+- Logged-in users (mentors, providers, subscribers) can access job detail pages
+- Backend infrastructure complete - all ACF fields and application form ready for Elementor template integration
+
+## Files Created/Modified
+
+- `includes/class-access-control.php` - Added `protect_single_job()` method to restrict single job_offer post access to logged-in users only, using template_redirect hook with redirect to /anbieter-login/
+
+## Decisions Made
+
+- Followed exact pattern from `protect_job_archive()` for consistency
+- No role-based restrictions on single job posts - any logged-in user can view (mentors need to see jobs, providers need to see their own)
+- Used `is_singular('job_offer')` instead of `is_single()` for proper custom post type detection
+- Maintained redirect to `home_url('/anbieter-login/')` for consistency with archive protection
+
+## Issues Encountered
+
+None - straightforward implementation following established access control patterns from Phase 05-01.
+
+## Next Step
+
+Phase 5 complete. Elementor template creation is manual UI work through WordPress admin (Templates > Theme Builder > Single > job_offer). All ACF fields available for template: job_title, job_description, job_location, job_type, job_contact_email, job_logo (200x200px). Application form available via shortcode [formidable id="job_application"] or Elementor popup/modal. Ready for Phase 6: Email Notifications (mentor opt-in and async processing).