diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md
index 1de0dc151..4414a511e 100644
--- a/.planning/ROADMAP.md
+++ b/.planning/ROADMAP.md
@@ -129,7 +129,7 @@ Plans:
 **Plans**: 3 plans (TDD)
 
 Plans:
-- [ ] 07-01: Redux Slice & Core Reducers (TDD) - sessionChatSlice with 7 reducers, message deduplication, unread tracking
+- [x] 07-01: Redux Slice & Core Reducers (TDD) - sessionChatSlice with 7 reducers, message deduplication, unread tracking
 - [ ] 07-02: Async Thunks & API Integration (TDD) - REST methods, fetchChatHistory, sendMessage with optimistic updates
 - [ ] 07-03: WebSocket Integration & Selectors (TDD) - CHAT_MESSAGE handler, 8 memoized selectors, localStorage persistence
 
@@ -182,7 +182,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 →
 | 4. JamTrack Research & Design | v1.0 | 2/2 | Complete | 2026-01-14 |
 | 5. JamTrack Implementation | v1.0 | 5/5 | Complete | 2026-01-14 |
 | 6. Session Chat Research & Design | v1.1 | 2/2 | Complete | 2026-01-26 |
-| 7. Chat Infrastructure & State Management | v1.1 | 0/3 | Not started | - |
+| 7. Chat Infrastructure & State Management | v1.1 | 1/3 | In progress | 2026-01-27 |
 | 8. Chat Window UI & Message Display | v1.1 | 0/TBD | Not started | - |
 | 9. Message Composition & Sending | v1.1 | 0/TBD | Not started | - |
 | 10. Read/Unread Status Management | v1.1 | 0/TBD | Not started | - |