diff --git a/.paul/ROADMAP.md b/.paul/ROADMAP.md
index dd66d08..cbc8d27 100644
--- a/.paul/ROADMAP.md
+++ b/.paul/ROADMAP.md
@@ -6,9 +6,9 @@
 |---------|------|--------|--------|-----------|
 | v0.1 | Walking Skeleton (MTConnect) | 1 | ✅ Shipped | 2026-07-21 |
 | v0.2 | Machine Management UX | 2, 2.1 | ✅ Shipped (2.1 commit pending) | 2026-07-21 |
-| v0.3 | Data-Item Selection + UX | 3, 3.1 | 🚧 Phase 3 done, 3.1 (theming) next | - |
-| v0.4 | OPC UA Protocol | 4 | 📋 Planned | - |
-| v0.5 | Fanuc FOCAS Protocol | 5 | 📋 Planned | - |
+| v0.3 | Data-Item Selection + UX | 3, 3.1 | ✅ Shipped (branch v0.3.1-theming) | 2026-07-22 |
+| v0.4 | OPC UA Protocol | 4 | 🚧 In progress (branch v0.4-opcua) | - |
+| v0.5 | Fanuc FOCAS Protocol | 5 | ⏸️ Deferred (no native/Windows on dev host) | - |
 | v0.6 | History & Trends | 6 | 📋 Planned | - |
 
 ## 🚧 Active Milestone: v0.2 Machine Management UX
diff --git a/.paul/STATE.md b/.paul/STATE.md
index 79d2a08..632d256 100644
--- a/.paul/STATE.md
+++ b/.paul/STATE.md
@@ -5,18 +5,24 @@
 See: .paul/PROJECT.md (updated 2026-07-21)
 
 **Core value:** Operators see live state of every configured machine across heterogeneous protocols in one place, adding machines/protocols without code.
-**Current focus:** v0.3 Phase 3 (item selection) shipped → PAUSED. Next: Phase 3.1 theming/UX.
+**Current focus:** Autonomous finish run — branch-per-milestone. v0.3.1 theming SHIPPED. Now v0.4 OPC UA.
 
 ## Current Position
 
-Milestone: v0.3 Data-Item Selection + UX
-Phase: 3 (item selection) ✓ SHIPPED — Phase 3.1 (theming/UX) NOT started
-Plan: v0.3-backend ✓, v0.3-appui ✓
-Status: PAUSED (user requested). Build 0/0, 138 tests + 2 docker-skip.
-Last activity: 2026-07-22 — v0.3 item selection: Machine.MonitoredItemIds (opt-in), IProtocolDriver.ProbeAsync, MTConnect probe+filter, Persistence col+migration, monitor.ProbeAsync, config probe→checklist UI (47 items live), detail empty-state.
+Milestone: v0.4 OPC UA Protocol
+Phase: 4 — IN PROGRESS (branch v0.4-opcua, from v0.3.1-theming)
+Status: Build 0/0, 148 tests + 2 docker-skip (after v0.3.1).
+Last activity: 2026-07-22 — v0.3.1 theming shipped on branch v0.3.1-theming (Fluent light/dark, per-protocol icons, curated layout, +10 converter tests). SDK decided for v0.4: OPCFoundation.NetStandard.Opc.Ua.Client 1.5.378.156 (MIT), plugin retargets net48, IUaClient seam for testability.
 
 Progress:
-- v0.3: Phase 3 done, Phase 3.1 (theming) pending
+- v0.3.1 theming ✓ (branch pushed)
+- v0.4 OPC UA: impl starting
+- v0.5 FOCAS: DEFERRED (no native fwlib32/Windows on Linux dev host)
+
+## Branch-per-milestone (user directive 2026-07-22)
+
+Chain, each branch from previous; user merges one at a time; push branches to origin, NO auto-merge to main:
+v0.3.1-theming (from main) ✓ → v0.4-opcua → v0.6-history (skips deferred v0.5).
 
 ## Loop Position