docs(11-04): complete documentation and examples plan

Tasks completed: 2/2
- Add parallel-aware splitting strategy to scope-estimation.md
- Add parallel vs sequential examples to phase-prompt.md

SUMMARY: .planning/phases/11-parallel-aware-planning/11-04-SUMMARY.md

Phase 11: Parallel-Aware Planning complete
Milestone 100% complete (23/23 plans)

.planning/STATE.md

@@ -20,18 +20,18 @@
 ## Current Position
 
 Phase: 11 of 11 (Parallel-Aware Planning)
-Plan: 3 of 4 in current phase
-Status: In progress
-Last activity: 2026-01-12 - Completed 11-03-PLAN.md
+Plan: 4 of 4 in current phase
+Status: Phase complete
+Last activity: 2026-01-12 - Completed 11-04-PLAN.md
 
-Progress: █████████████░ 96% (22 of 23 plans)
+Progress: ██████████████ 100% (23 of 23 plans)
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 22
+- Total plans completed: 23
 - Average duration: 3.7 min
-- Total execution time: 82 min
+- Total execution time: 85 min
 
 **By Phase:**
 
@@ -47,10 +47,10 @@ Progress: █████████████░ 96% (22 of 23 plans)
 | 8 | 1 | 1 min | 1 min |
 | 9 | 1 | 3 min | 3 min |
 | 10 | 4 | 33 min | 8.3 min |
-| 11 | 3 | 9 min | 3 min |
+| 11 | 4 | 12 min | 3 min |
 
 **Recent Trend:**
-- Last 5 plans: 10-04 (3m), 11-01 (4m), 11-02 (2m), 11-03 (3m)
+- Last 5 plans: 11-01 (4m), 11-02 (2m), 11-03 (3m), 11-04 (3m)
 - Trend: Workflow updates fast (avg 3m)
 
 *Updated after each plan completion*
@@ -105,5 +105,5 @@ Drift notes: None
 ## Session Continuity
 
 Last session: 2026-01-12
-Stopped at: Completed 11-03-PLAN.md
+Stopped at: Completed 11-04-PLAN.md - Phase 11 complete, milestone complete
 Resume file: None