docs(10): create phase plan for workflow modularization

Phase 10: Workflow Modularization
- 4 plan(s) in 3 wave(s)
- Wave 1: Orphan cleanup (1 plan)
- Wave 2: Sub-workflow extraction (2 plans parallel)
- Wave 3: Integration verification (1 plan)
- Ready for execution

Plans:
- 10-01: Remove 8 orphan nodes
- 10-02: Extract container-update sub-workflow (DEBT-03)
- 10-03: Extract container-actions sub-workflow
- 10-04: Integration verification with user checkpoint

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

.planning/ROADMAP.md

@@ -20,10 +20,13 @@ Modularize the workflow for maintainability, add "update all" functionality, fix
 
 **Requirements:** MOD-01, MOD-02, DEBT-03
 
-**Plans:** 0 plans
+**Plans:** 4 plans
 
 Plans:
-- [ ] TBD (run /gsd:plan-phase 10 to break down)
+- [ ] 10-01-PLAN.md — Orphan node cleanup (remove 8 orphan nodes before modularization)
+- [ ] 10-02-PLAN.md — Extract container update sub-workflow (consolidates DEBT-03)
+- [ ] 10-03-PLAN.md — Extract container actions sub-workflow (start/stop/restart)
+- [ ] 10-04-PLAN.md — Integration verification and user checkpoint
 
 **Success Criteria:**
 1. Workflow split into logical sub-workflows (command routing, container operations, keyboard generation, etc.)
@@ -104,7 +107,7 @@ Plans:
 | 7 | Socket Security | v1.1 | Complete |
 | 8 | Inline Keyboard Infrastructure | v1.1 | Complete |
 | 9 | Batch Operations | v1.1 | Complete |
-| 10 | Workflow Modularization | v1.2 | Pending |
+| 10 | Workflow Modularization | v1.2 | Planned |
 | 11 | Update All & Callback Limits | v1.2 | Pending |
 | 12 | Polish & Audit | v1.2 | Pending |
 | 13 | Documentation Overhaul | v1.2 | Pending |
@@ -112,4 +115,4 @@ Plans:
 **v1.2 Coverage:** 12 requirements mapped across 4 phases
 
 ---
-*Updated: 2026-02-04 after v1.1 milestone*
+*Updated: 2026-02-04 after Phase 10 planning*