docs(05-02): complete job application form plan

Created SUMMARY.md documenting:
- Job application form with email notification system
- Pre-filled email for logged-in mentors
- Provider receives full applicant context
- Direct reply capability for providers

Updated STATE.md:
- Phase 5 Plan 2 complete
- Added 4 decisions to accumulated context
- Updated velocity metrics

Updated ROADMAP.md:
- Marked 05-02 complete
- Updated progress to 2/4 for Phase 5

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

.planning/STATE.md

@@ -19,9 +19,9 @@ Progress: ████████████░ 56%
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 13
-- Average duration: 8.2 min
-- Total execution time: 1.8 hours
+- Total plans completed: 14
+- Average duration: 7.9 min
+- Total execution time: 1.85 hours
 
 **By Phase:**
 
@@ -31,10 +31,11 @@ Progress: ████████████░ 56%
 | 2 | 4 | 42 min | 10.5 min |
 | 3 | 4 | 50 min | 12.5 min |
 | 4 | 2 | 13 min | 6.5 min |
+| 5 | 1 | 3 min | 3 min |
 
 **Recent Trend:**
-- Last 5 plans: 03-02 (12 min), 03-03 (8 min), 03-04 (15 min), 04-01 (8 min), 04-02 (5 min)
-- Trend: Stable with efficiency improving (Phase 4 completed rapidly)
+- Last 5 plans: 03-03 (8 min), 03-04 (15 min), 04-01 (8 min), 04-02 (5 min), 05-02 (3 min)
+- Trend: Excellent efficiency maintained in Phase 5
 
 ## Accumulated Context
 
@@ -81,6 +82,10 @@ Recent decisions affecting current work:
 | 04-02 | Email includes deactivation reason for business intelligence | Allows admins to track patterns and platform effectiveness |
 | 04-02 | Used current_time() for deactivation timestamp | Captures actual deactivation moment rather than post modified date |
 | 04-02 | Deactivation notification follows submission notification pattern | Consistency makes code predictable and maintainable |
+| 05-02 | Email pre-fill uses current_user email for logged-in mentors | Convenience feature reduces friction in application process |
+| 05-02 | Form stays on detail page after submission (no redirect) | Keeps user context, better UX for job browsing flow |
+| 05-02 | Application notification follows established pattern | Consistency with other notifications (German, error logging, HTML email) |
+| 05-02 | Provider email sourced from ACF field job_contact_email | Uses established field from Phase 01-03, maintains data consistency |
 
 ### Deferred Issues
 
@@ -93,5 +98,5 @@ None yet.
 ## Session Continuity
 
 Last session: 2026-01-14
-Stopped at: Completed Plan 04-02 (deactivation notifications) - Phase 4 complete
+Stopped at: Completed Plan 05-02 (job application form) - Phase 5 in progress
 Resume file: None