docs(15): create phase plan — 2 plans for infrastructure foundation

.planning/ROADMAP.md

@@ -66,10 +66,11 @@
   3. GraphQL response normalization transforms Unraid API shape to workflow contract
   4. GraphQL error handling standardized (checks response.errors[], handles HTTP 304)
   5. Timeout configuration accounts for myunraid.net cloud relay latency (200-500ms)
-**Plans**: TBD
+**Plans**: 2 plans
 
 Plans:
-- [ ] 15-01: TBD
+- [ ] 15-01-PLAN.md — Container ID Registry and Callback Token Encoding/Decoding
+- [ ] 15-02-PLAN.md — GraphQL Response Normalizer, Error Handler, and HTTP Template
 
 #### Phase 16: API Migration
 **Goal**: All container operations work via Unraid GraphQL API
@@ -132,7 +133,7 @@ Phases execute in numeric order: 1-14 (complete) → 15 → 16 → 17 → 18
 | 12 | Polish & Audit | v1.2 | 2/2 | Complete | 2026-02-08 |
 | 13 | Documentation Overhaul | v1.2 | 1/1 | Complete | 2026-02-08 |
 | 14 | Unraid API Access | v1.3 | 2/2 | Complete | 2026-02-08 |
-| 15 | Infrastructure Foundation | v1.4 | 0/? | Not started | - |
+| 15 | Infrastructure Foundation | v1.4 | 0/2 | Not started | - |
 | 16 | API Migration | v1.4 | 0/? | Not started | - |
 | 17 | Cleanup | v1.4 | 0/? | Not started | - |
 | 18 | Documentation | v1.4 | 0/? | Not started | - |
@@ -140,4 +141,4 @@ Phases execute in numeric order: 1-14 (complete) → 15 → 16 → 17 → 18
 **Total: 4 milestones shipped (14 phases, 50 plans), v1.4 in progress (4 phases)**
 
 ---
-*Updated: 2026-02-09 — v1.4 Unraid API Native roadmap created*
+*Updated: 2026-02-09 — Phase 15 planned (2 plans)*