diff --git a/.gitignore b/.gitignore
index c417cf5..922ef39 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,4 +49,7 @@ __debug_bin*
 # Private dev docs
 docs/dev/
 
-tmp/
\ No newline at end of file
+tmp/
+
+# Investigation backups
+.backup-investigation/
\ No newline at end of file
diff --git a/.golangci.yml b/.golangci.yml
index 87bf666..5ccc521 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -175,18 +175,36 @@ linters:
         linters:
           - errcheck
 
+      # Rust FFI backend (//go:build rust): invisible to CI lint (GOOS=linux).
+      # nolint directives appear "unused" because suppressed linters never run.
+      - path: .*_rust\.go
+        linters:
+          - nolintlint
+
+      # Browser-only mapped range (//go:build js && wasm): same CI blind spot.
+      - path: mapped_range_browser\.go
+        linters:
+          - nolintlint
+
       # Internal utilities
       - path: internal/.*\.go
         linters:
           - gocyclo
           - cyclop
 
-      # Browser backend enum-to-string conversions: repeated string literals
-      # in switch/default are intentional for readability (each function is
-      # a self-contained WebGPU spec mapping).
-      - path: internal/browser/convert_enums\.go
+      # Browser backend (//go:build js && wasm): invisible to CI lint runner
+      # (ubuntu, GOOS=linux). nolintlint false positives (golangci-lint#3833).
+      # revive var-naming: ref_ field intentionally underscore-suffixed to avoid
+      # collision with Ref() method (Go disallows same-name field + method).
+      # gocritic/nestif: browser JS interop has unavoidable nesting (DOM-style
+      # null checks on js.Value chains).
+      - path: internal/browser/.*\.go
         linters:
           - goconst
+          - nolintlint
+          - revive
+          - gocritic
+          - nestif
 
       # DX12 COM bindings - Windows API naming conventions preserved
       # D3D12_* types match the Windows SDK headers exactly for documentation cross-reference
diff --git a/AGENTS.md b/AGENTS.md
index 8ee3553..0e72f36 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -65,7 +65,7 @@ wgpu (public API — Device, Queue, Buffer, Texture, Pipeline...)
 
 ## Current Version
 
-v0.30.22 | Go 1.25+ | Dependencies: naga v0.17.15, gpucontext v0.21.1, gputypes v0.5.1, goffi v0.6.1, webgpu v0.5.3
+v0.31.6 | Go 1.25+ | Dependencies: naga v0.18.0, gpucontext v0.28.0, gputypes v0.5.2, goffi v0.6.3, webgpu v0.5.5
 
 ## Build & Test
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2802cef..b178902 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.31.6] - 2026-08-23
+
+### Added
+
+- **core:** Atomic copy usage tracking for all 4 copy commands (#312, @besmpl)
+  - `CopyBufferToBuffer`, `CopyBufferToTexture`, `CopyTextureToBuffer`, `CopyTextureToTexture` — preflight validates ALL endpoints before committing any scope mutation
+  - `ReplaceUsage` on `BufferUsageScope` / `TextureUsageScope` for post-preflight unconditional commit
+  - `RecordTextureUsage` / `ReplaceTextureUsage` on `CoreCommandEncoder`
+  - `explicitTextureTransitions` map for barrier-aware scope resolution
+  - Released buffer check in `CopyBufferToBuffer` (was silently returning)
+  - 1,100+ LOC tests: atomicity invariants, refcount lifecycle, guard branches
+
+### Fixed
+
+- **docs:** Update stale dependency versions in AGENTS.md, README.md, ARCHITECTURE.md
+
 ## [0.31.5] - 2026-08-18
 
 ### Added
diff --git a/README.md b/README.md
index 46cbd4f..79ae2aa 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ CGO_ENABLED=0 go build
 > **Note:** wgpu uses Pure Go FFI via [goffi](https://github.com/go-webgpu/goffi). Both `CGO_ENABLED=0` (default, zero C compiler dependency) and `CGO_ENABLED=1` (for race detector or coexistence with CGO libraries) are supported.
 
 The unreleased Android/arm64 Vulkan implementation is documented separately in
-[Android Vulkan preview](docs/ANDROID.md). It consumes canonical goffi v0.6.1
+[Android Vulkan preview](docs/ANDROID.md). It consumes canonical goffi v0.6.3
 and is not yet a released support claim; the optional Rust path temporarily
 pins the exact merged WebGPU Android source until that dependency is released.
 
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 2e48dc4..b5e1b8e 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -334,10 +334,10 @@ gogpu (app framework) / gg (2D graphics)
 ```
 
 External dependencies:
-- `github.com/gogpu/naga` v0.17.15 — shader compiler (WGSL → SPIR-V / MSL / GLSL / HLSL / DXIL), Pure Go
-- `github.com/gogpu/gputypes` v0.5.1 — shared WebGPU type definitions
-- `github.com/gogpu/gpucontext` v0.21.1 — shared interfaces (DeviceProvider, PlatformProvider)
-- `github.com/go-webgpu/goffi` v0.6.2 — Pure Go FFI for Vulkan/Metal/DX12 symbol loading (Android Bionic support)
-- `github.com/go-webgpu/webgpu` v0.5.4 — Rust FFI backend (wgpu-native v29, Android surface, timestamp period)
+- `github.com/gogpu/naga` v0.18.0 — shader compiler (WGSL → SPIR-V / MSL / GLSL / HLSL / DXIL), Pure Go
+- `github.com/gogpu/gputypes` v0.5.2 — shared WebGPU type definitions
+- `github.com/gogpu/gpucontext` v0.28.0 — shared interfaces (DeviceProvider, PlatformProvider)
+- `github.com/go-webgpu/goffi` v0.6.3 — Pure Go FFI for Vulkan/Metal/DX12 symbol loading (Android Bionic support)
+- `github.com/go-webgpu/webgpu` v0.5.5 — Rust FFI backend (wgpu-native v29, Android surface, timestamp period)
 - `github.com/gogpu/galloc` v0.1.0 — O(1) offset allocator (planned integration for memory sub-allocation)
 - `golang.org/x/sys` v0.47.0 — platform syscall definitions