docs(06-02): complete template workflow replacement plan

- Create 06-02-SUMMARY.md documenting month-picker generation workflow
- Update STATE.md: progress 100%, decisions, session info
- Update ROADMAP.md: Phase 06 marked Complete (2/2 summaries)
- Mark TMPL-03 and TMPL-06 complete in REQUIREMENTS.md

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.1
 milestone_name: Usability and Templates
 status: planning
-stopped_at: Completed 06-template-frontend-and-workflow-replacement-01-PLAN.md
-last_updated: "2026-03-12T12:06:05.515Z"
+stopped_at: Completed 06-template-frontend-and-workflow-replacement-02-PLAN.md
+last_updated: "2026-03-12T12:10:58.020Z"
 last_activity: 2026-03-12 — v1.1 roadmap created, Phases 5-8 defined
 progress:
   total_phases: 8
-  completed_phases: 5
+  completed_phases: 6
   total_plans: 14
-  completed_plans: 13
+  completed_plans: 14
   percent: 0
 ---
 
@@ -53,6 +53,7 @@ Progress: [░░░░░░░░░░] 0%
 | Phase 05-template-data-model-and-api P01 | 3 | 2 tasks | 4 files |
 | Phase 05-template-data-model-and-api P02 | 1min | 2 tasks | 2 files |
 | Phase 06-template-frontend-and-workflow-replacement P01 | 2min | 2 tasks | 7 files |
+| Phase 06-template-frontend-and-workflow-replacement P02 | 2min | 2 tasks | 9 files |
 
 ## Accumulated Context
 
@@ -73,6 +74,8 @@ Recent decisions affecting current work:
 - [Phase 05-template-data-model-and-api]: GenerateBudget returns 409 JSON with budget_id field using BudgetExistsError.ExistingBudgetID
 - [Phase 06-template-frontend-and-workflow-replacement]: TemplatePage add form filters out already-added categories and renders amount input only for fixed tier
 - [Phase 06-template-frontend-and-workflow-replacement]: Reorder swaps sort_order values between adjacent items and sends full updated list to PUT /template/items/reorder
+- [Phase 06-template-frontend-and-workflow-replacement]: 409 conflict on budget generate handled silently — call onCreated() so existing budget becomes selectable
+- [Phase 06-template-frontend-and-workflow-replacement]: BudgetSetup existingBudgets prop retained in signature for interface compatibility but unused after copy-from removal
 
 ### Pending Todos
 
@@ -85,6 +88,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-12T12:06:05.513Z
-Stopped at: Completed 06-template-frontend-and-workflow-replacement-01-PLAN.md
+Last session: 2026-03-12T12:10:58.018Z
+Stopped at: Completed 06-template-frontend-and-workflow-replacement-02-PLAN.md
 Resume file: None