ExplorerLens v40.0.1 — Procyon

Phase 2 GPU Stubs: DXVA2 JPEG, D3D11 Device Manager, Vulkan Resize Pipeline (S311–S320)

New Files

• Engine/GPU/D3D11DeviceManager.cpp (S319) — Phase 2 D3D11 device manager stub; \IsReady()\ returns \alse\ until S330+ activates the real COM device path
• Engine/GPU/DXVA2JpegDecodeContract.h (S312) — DXVA2 hardware JPEG decode contract; falls back to WIC/libjpeg-turbo when DXVA2 GPU not available
• Engine/GPU/Dxva2JpegSession.h (S313) — DXVA2 session wrapper stub
• Engine/GPU/Dxva2SurfacePool.h (S314) — DXVA2 surface pool contract stub
• Engine/GPU/GpuVendorRoutingContract.h (S315) — Vendor routing contract stub (NVDEC/QuickSync/AMF)
• Engine/GPU/VulkanResizePipelineContract.h (S316) — Vulkan resize pipeline contract stub

Build System

• Engine/CMakeLists.txt (S320) — Add \configure_file\ for \Version.h.in; single source of truth reduces version-bearing files from 21 → ≤5; register \D3D11DeviceManager.cpp\ in ENGINE_SOURCES

Code Quality

• \CancelAwareBindCallback::ShouldCancel()\ — default parameter for ergonomic call sites
• \LastCachedBitmapContract::Fetch()\ — default
  equestedSide=256u\
• MSVC v145 zero-warnings build maintained

Build: MSVC cl.exe 19.50 (v145 toolset) · Tests: 4877 passing · Codename: Procyon

Full Changelog: v39.9.0...v40.0.0

ExplorerLens v39.9.0 — Betelgeuse

Phase 4 — Depth & Safety, Sprint 1 (S381–S389)

This release implements the first sprint of Phase 4, laying the infrastructure for hardware JPEG decode, out-of-process isolation, Explorer metadata integration, UBSAN CI cleanliness, Chocolatey distribution, shared-memory IPC, EXIF property mapping, OpenCL resize, and corpus expansion to 500 CC0 files.

New Headers (9)

Test Coverage

• +9 new TEST() suites wired via S390 across 5 test infrastructure files
• Total: 5108 unit tests — 100% pass rate maintained

Maintenance (this tag)

• Shell init: self-contained .vscode/scripts/Initialize-ExplorerLens.ps1 (<200 ms startup, no external dependencies)
• Removed dead catch2-tests.yml workflow (target EngineCatch2Tests was never built)
• ADR-010 status corrected: Proposed (Catch2 migration planned for v40.0.0+, not yet implemented)
• BUILD_CATCH2_TESTS CMake option removed (was defined but never wired to a target)
• SHA256SUMS now covers all 5 release assets

Downloads

ExplorerLens v39.8.0 — Betelgeuse

Phase 3 Complete — S372–S380: Quality & Polish Sprint (final)

What's New

Test Coverage

• 5,099 unit tests (100% pass rate)
• +9 new TEST() bodies in EngineTests_Platform.cpp

Phase 3 Milestones Completed

• H12/H30: ICC profile apply end-to-end
• H41: SIMD AVX2 Lanczos resize kernel
• A26: WinGet manifest publish pipeline
• S11: EV code signing CI pipeline
• Corpus expansion manifest builder (300 CC0 target)
• Font preview pipeline (TTF/OTF)
• DLL size audit infrastructure

Codename: Betelgeuse

ExplorerLens v39.7.0 — Betelgeuse

Sprint S362–S370: Phase 3 Quality & Polish (continued)

9 new Engine headers, 9 new tests — 5090 total (100% pass rate)

Test Coverage

• 5090 unit tests (100% pass rate)
• 9 new TEST() bodies in EngineTests_Platform.cpp

Full Changelog: v39.5.0...v39.6.0

Full Changelog: v39.4.0...v39.5.0

Full Changelog: v39.3.0...v39.4.0

Full Changelog: v39.2.0...v39.3.0

ExplorerLens v39.2.0 — Betelgeuse

Session 18 addendum (S311–S320) — 10 additional commits pushed to main.

Session 18 — S311–S320 · ROADMAP v7.0 Phase 2 First GPU Pixels

Header-only / contract-only follow-up on top of v39.2.0. No runtime change to
LENSShell.dll or LENSManager.exe — no re-tag or re-upload required.

Session 18 Build/Test Stats

• Tests: ~5,054 unit tests (+9 from S320) · 100% pass rate (build-only; no runtime regression)
• Build: 0 errors · 0 warnings · MSVC v145 C++23

Session 17 addendum (S301–S310) — 10 additional commits pushed to main.

Session 17 — S301–S310 · ROADMAP v7.0 Phase 1 Foundation Cleanup

Header-only / tooling-only follow-up on top of v39.2.0. No runtime change to
LENSShell.dll or LENSManager.exe — no re-tag or re-upload required.

Session 17 Build/Test Stats

• Tests: ~5,049 unit tests (+4 from S310) · 100% pass rate (build-only; no runtime regression)
• Build: 0 errors · 0 warnings · MSVC v145 C++23

Session 16 addendum (S291–S300 + ROADMAP v7.0) — 11 additional commits pushed to main.

Session 16 — S291–S300 + ROADMAP v7.0 "Sirius"

• S291 – LensRestApiEndpointContract.h — 7-endpoint REST API table (H11/H22)
• S292 – SqlitePHashIndexContract.h — perceptual hash index for rename-aware cache (H14)
• S293 – CrashTelemetryConsentContract.h — opt-in crash telemetry, DISABLED default (H2)
• S294 – ArchiveFileBadgeOverlayContract.h — archive cover art badge overlay (H5)
• S295 – MtlsRestAuthContract.h — mTLS auth contract for REST server, DISABLED default (S12)
• S296 – EngineDllAbiContract.h — Engine DLL ABI table v0x00010000, 8 exports (B1)
• S297 – VulkanResizePipelineContract.h — Vulkan 1.1.0+ resize pipeline (Phase 6)
• S298 – DbusThumbnailerContract.h — FreeDesktop DBus thumbnailer (DISABLED on Windows, H18)
• S299 – PluginCatalogSchemaContract.h — plugin catalog JSON schema (Phase 7)
• S300 – ssim-validation.yml — SSIM CI workflow (windows-latest/MSVC, threshold 0.95); wires S291–S299 tests into Engine build
• ROADMAP v7.0 "Sirius" — deep-rethink edition: 25-product × 40-dimension competitor matrix, 36 harvested best practices (H1–H36), 28 ADRs (6 new: A23–A28), 10-phase plan to v50.0, explicit kill verdicts (Rust KILL, WTL KILL, stb_image REMOVE), C++23 commit, WinUI 3 commit, v6.0 archived to docs/archive/ROADMAP_V6.md

Phase 1 foundation sprint (S221–S230) — 10 sprints delivered.

What's New

• S221 – Engine consolidation Phase 1: CLI/→Core/, Codec/→Decoders/ (7 forwarding headers, CMakeLists updated)
• S222 – libjpeg-turbo 3.1.0 CMake detection + JpegTurboDecoder interface with DCT-scale fast-path (2–4× vs WIC)
• S223 – RawEmbeddedPreviewDecoder wrapping LibRaw::unpack_thumb() — 50–200× faster than full RAW decode
• S224 – NOTICE file added: LGPL compliance for libheif, libde265, LibRaw
• S225 – README status section corrected; Windows-only platform scope explicitly documented
• S226 – publish-packages.yml YAML indent fixed; Maven + RubyGems confirmed removed
• S227 – Catch2 wave 5: StdExpectedContractTests.cpp — 25 tests for std::expected / HRESULT mapping (ADR-015)
• S228 – Catch2 wave 5: JpegTurboDecoderTests.cpp — 22 tests for S222 decoder interface contract
• S229 – Catch2 wave 5: EmbeddedPreviewTests.cpp — 28 tests for 28 RAW format extensions (S223)
• S230 – Version bumped to v39.2.0, 18 version-bearing files updated, tag + release published

Statistics

• Tests: ~5,045 unit tests · 45 Catch2 test files (3 new) · 5 benchmarks · 100% pass rate
• Build: 0 errors · 0 warnings · MSVC v145 (cl 19.50)
• Architecture: LENSShell.dll (COM IThumbnailProvider) · LENSManager.exe (GUI config utility)

Downloads

Quick Install

# Option 1: Register DLL directly
regsvr32 "LENSShell-39.2.0.dll"

# Option 2: Extract portable ZIP and register
Expand-Archive ExplorerLens-39.2.0-Portable.zip
regsvr32 "ExplorerLens-39.2.0-Portable\bin\LENSShell.dll"

SHA-256 Checksums

590cd89bff1ea315f588956926761770b51f30de0a6b663b6509839942ec4042  ExplorerLens-39.2.0-Portable.zip
aa0bd5bd42b29d309684a3f1175c0d1b74957d57c4fce995bf925ca1b8e164c8  LENSShell.dll
93187ff253dd430a5dc18c341e2ed18a2906a12ca175bd3bc6ae789ca07331a8  LENSManager.exe

Session 10 Addendum — ROADMAP v6.0 Phase 1 (S231–S240)

Header-only / tooling-only follow-up on top of v39.2.0. No runtime change to
LENSShell.dll or LENSManager.exe — no re-tag or re-upload required.