docs: fix version numbering consistency across design docs

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

docs/MESSAGING-NOTIFICATION-CENTER-DESIGN.md

@@ -115,7 +115,7 @@ ObjectStack's key differentiation is **record-contextual communication** — con
 - Grouped push notification delivery (iOS notification groups)
 - Rich notification previews with quick actions (reply inline, approve, etc.)
 
-### Tier 2 — Activity Feed & Record Comments (v1.3)
+### Tier 2 — Activity Feed & Record Comments (v1.2)
 
 > Salesforce Chatter-style record engagement.
 
@@ -127,7 +127,7 @@ ObjectStack's key differentiation is **record-contextual communication** — con
 - Activity filtering by type (comments, changes, workflow, system)
 - Inline file attachments on comments
 
-### Tier 3 — Messaging & Channels (v1.4)
+### Tier 3 — Messaging & Channels (v1.3)
 
 > Slack/Teams-style communication.
 

docs/NEXT-PHASE.md

@@ -185,14 +185,14 @@ All development phases (0 through 5B) and most of Phase 6 are **complete**:
 
 > See [MESSAGING-NOTIFICATION-CENTER-DESIGN.md](./MESSAGING-NOTIFICATION-CENTER-DESIGN.md) for full specification.
 
-### v1.3 — Offline-First Enhancements
+### v1.4 — Offline-First Enhancements
 
 - [ ] Selective offline sync (choose which objects/views to cache)
 - [ ] Conflict resolution improvements (three-way merge UI)
 - [ ] Offline analytics (queue queries, sync results)
 - [ ] Background data prefetching based on usage patterns
 
-### v1.4 — Platform Integration
+### v1.5 — Platform Integration
 
 - [ ] iOS Shortcuts / Siri integration
 - [ ] Android Quick Settings tiles