diff --git a/docs/feedback/VDE-057.md b/docs/feedback/VDE-057.md
new file mode 100644
index 0000000..9bdd74e
--- /dev/null
+++ b/docs/feedback/VDE-057.md
@@ -0,0 +1,50 @@
+# VDE-057: ViewDesign HW P0-3 + UI P0-3 progress — TaskRunner enhancement
+
+- **ID**: VDE-057
+- **Date**: 2026-07-29
+- **Status**: info
+- **Severity**: Info
+- **Category**: INTEGRATION
+- **Source**: ViewDesign Task 10 & 12 (continued)
+
+## Summary
+ViewDesign Task 12 (Hardware Utilization P0-3) and Task 10 (UI P0-3 + P1-1) completed.
+No VDE changes required. This is a progress report for VDE team awareness.
+
+## ViewDesign Changes (2026-07-29, 2nd batch)
+
+### Task 12 HW P0-3: Thread Pool Optimization (commit 542ee1b)
+- Enhanced TaskRunner with work-stealing, thread affinity, priority scheduling
+- Per-worker priority queues (high/normal/low) replace single mutex-bottlenecked queue
+- Round-robin submit distributes work; idle workers steal from peers
+- SetThreadAffinityMask pins each worker to a logical core
+- Adaptive spin (100µs configurable) before CV blocking
+- Batch submission (submitBatch) reduces lock contention
+- TaskRunnerStats for diagnostics (tasks submitted/completed/stolen)
+- Backward compatible API
+
+### Task 10 UI P0-3: 3D Box in Stub Viewport (commit 8da7dc0)
+- Perspective 3D box rendering using QPainter (no bgfx required)
+- Wireframe + semi-transparent face fill
+- Isometric view matrix (RotateY 45° + RotateX 35°)
+- 3D axis with proper perspective projection
+- Grid plane background
+
+### Task 10 UI P1-1: View Ribbon Tab (commit 8da7dc0)
+- RenderPlugin registers "View" tab with 3 groups:
+  - Orientation (7 buttons: Front/Back/Left/Right/Top/Bottom/ISO)
+  - Display (2 buttons: Wireframe/Shaded)
+  - Zoom (3 buttons: In/Out/Fit)
+- All buttons route through CommandService
+
+## Build Status
+- ViewDesign: 100% build (0 errors)
+- Tests: 188/188 spot-check PASS
+- Shell: startup self-check PASS (exit 0)
+- AVX2 SIMD: active on Intel Core Ultra 9 290HX Plus (24-core)
+
+## Known Limitations
+- bgfx build blocked: missing bgfx.idl in downloaded source
+- Stub viewport uses QPainter (no GPU acceleration)
+- 0 plugins loaded in --test-mode (expected, no plugin dir)
+- Qt DLLs require manual copy to vd_shell output dir