docs(09-01): complete driver-upload-fix-and-inline-oob plan

- Create 09-01-SUMMARY.md: documents OOB swap fix, file changes, TDD outcomes
- Update STATE.md: advance session, add decisions, update progress (94%)
- Update ROADMAP.md: phase 9 in progress (2/3 summaries)
- Update REQUIREMENTS.md: mark UX-01 complete

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.1
 milestone_name: Hardening & Validation
 status: Pending (roadmap approved, plans not yet drafted)
-stopped_at: Completed 09-ux-tech-debt-closure-09-03-PLAN.md
-last_updated: "2026-04-13T08:49:37.022Z"
+stopped_at: Completed 09-01-driver-upload-fix-and-inline-oob-PLAN.md
+last_updated: "2026-04-13T08:53:01.475Z"
 last_activity: 2026-04-13 — v1.1 roadmap created, 15/15 requirements mapped across Phases 8–11
 progress:
   total_phases: 4
   completed_phases: 0
   total_plans: 3
-  completed_plans: 1
+  completed_plans: 2
 ---
 
 # Project State
@@ -61,6 +61,8 @@ Last activity: 2026-04-13 — v1.1 roadmap created, 15/15 requirements mapped ac
 Full decision log in PROJECT.md Key Decisions table. Milestone v1.0 decisions archived in `milestones/v1.0-ROADMAP.md`.
 - [Phase 09-ux-tech-debt-closure]: 09-03: .ps1 routes added as aliases (not renames) to preserve backward compatibility
 - [Phase 09-ux-tech-debt-closure]: 09-03: Shared _*_response() helper pattern used for route aliases
+- [Phase 09]: Sentinel field (caller=printer_form) for OOB branching: chosen over HX-Target header for clarity and testability
+- [Phase 09]: HTMX OOB template includes primary fragment + OOB select sibling in driver_upload_with_oob.html
 
 ### Pending Todos
 
@@ -70,6 +72,6 @@ Full decision log in PROJECT.md Key Decisions table. Milestone v1.0 decisions ar
 
 ## Session Continuity
 
-Last session: 2026-04-13T08:49:37.019Z
-Stopped at: Completed 09-ux-tech-debt-closure-09-03-PLAN.md
+Last session: 2026-04-13T08:53:01.469Z
+Stopped at: Completed 09-01-driver-upload-fix-and-inline-oob-PLAN.md
 Resume file: None