diff --git a/docs/HOMEBREW_TESTING.md b/docs/HOMEBREW_TESTING.md
index d1136e260..922378e5c 100644
--- a/docs/HOMEBREW_TESTING.md
+++ b/docs/HOMEBREW_TESTING.md
@@ -1,76 +1,35 @@
-# Homebrew investigation, 2026-09-25
+# Homebrew testing
 
-Baseline: SamG-Coder/AnyPS5, commit `2778c1e`.
+## Build and test
 
-## Verified locally
+On Windows, install CMake, Ninja, and a C++20 compiler. For compatibility libraries,
+use the toolchain specified in [README.md](../README.md).
 
-- Cloned the fork and initialized all seven submodules at their pinned revisions.
-- Configured on Windows with CMake/Ninja and MSYS2 UCRT64 GCC 16.2.0.
-- Built `relinker`, `strict_nid_filter_tests`, and `windows_dependency_diagnostics_tests`.
-- Both existing test executables passed. Initially CTest discovered zero tests.
-- Enabled root CTest registration when `BUILD_TESTING=ON` and registered the Windows diagnostics test. The latter is included in normal builds only when testing is enabled.
-- After the CMake changes, CTest discovered and passed both tests.
-- Tried relinking two real PS5 homebrew binaries to Windows. Both failed with exit code 2; neither produced a game executable.
+Run from the repository root with the compiler and Ninja on `PATH`:
 
-This verifies the relinker build and these two test suites only. The compatibility libraries, shader pipeline, and game execution have not been built or validated in this investigation. Upstream documents a specific WinLibs GCC 15.2.0 toolchain requirement for its Windows libc implementation; the compiler used here does not establish compatibility with that requirement.
-
-## Reproduce the build
-
-Run from the repository root in PowerShell. These paths match this workstation:
-
-```powershell
-$env:PATH = 'C:\msys64\ucrt64\bin;' + $env:PATH
-cmake -S . -B build -G Ninja `
-  -DCMAKE_MAKE_PROGRAM=C:/msys64/ucrt64/bin/ninja.exe `
-  -DCMAKE_C_COMPILER=C:/msys64/ucrt64/bin/gcc.exe `
-  -DCMAKE_CXX_COMPILER=C:/msys64/ucrt64/bin/g++.exe `
-  -DCMAKE_BUILD_TYPE=Debug -DBUILD_TESTING=ON
-cmake --build build --target relinker strict_nid_filter_tests windows_dependency_diagnostics_tests -j 8
-ctest --test-dir build --output-on-failure
+```sh
+git submodule update --init --recursive
+cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Debug -DBUILD_TESTING=ON
+cmake --build build --target relinker strict_nid_filter_tests windows_dependency_diagnostics_tests
+ctest --test-dir build --output-on-failure -R "^(strict_nid_filter|windows_dependency_diagnostics)$"
 ```
 
-## Public PS5 homebrew inputs
+## PS5 homebrew projects
 
-Downloaded directly from [ps5-payload-dev/websrv v0.34](https://github.com/ps5-payload-dev/websrv/releases/tag/v0.34). Downloads remain in the ignored `downloads/` directory; no game binaries or data are added to Git.
+- [Omnispeak](https://github.com/sulix/omnispeak): [PS5 build recipe](https://github.com/ps5-payload-dev/websrv/blob/master/homebrew/Omnispeak/build.sh).
+- [Crispy Doom PS5 build recipe](https://github.com/ps5-payload-dev/websrv/blob/master/homebrew/CrispyDoom/build.sh).
+- [PS5 homebrew packages, websrv v0.34](https://github.com/ps5-payload-dev/websrv/releases/tag/v0.34).
+- [PS5 payload SDK](https://github.com/ps5-payload-dev/sdk).
+- [Freedoom game data](https://freedoom.github.io/).
 
-| Archive | SHA-256 |
-| --- | --- |
-| Omnispeak.zip | 7A4D82BF58EF7406A4C9050EC298195C548D387FEBC28FD814C3BF9026BB231B |
-| CrispyDoom.zip | C0C37713703E109F43B1B598CF5790D969097A2BAF961693A0FD0E03956A3C59 |
+## Convert an ELF executable
 
-[Omnispeak](https://github.com/sulix/omnispeak) is an open-source Commander Keen engine. Its upstream README links Keen 4 shareware data, and the PS5 package includes CK4 data. The [PS5 build recipe](https://github.com/ps5-payload-dev/websrv/blob/master/homebrew/Omnispeak/build.sh) identifies how that package is assembled.
+Keep downloaded binaries and game data outside version control. Check the engine
+and game-data licenses separately.
 
-[Crispy Doom's PS5 recipe](https://github.com/ps5-payload-dev/websrv/blob/master/homebrew/CrispyDoom/build.sh) builds the engine and packages shareware data. [Freedoom](https://freedoom.github.io/) is a separate free-content candidate for later compatibility testing; it has not been downloaded or tested here.
-
-These PS5 builds are ELF payloads, not ISO disc images. An engine's open-source license does not automatically apply to original commercial game data.
-
-```powershell
-.\build\core\relinker\relinker.exe --windows `
-  downloads\Omnispeak\omnispeak.elf downloads\omnispeak.exe
-.\build\core\relinker\relinker.exe --windows `
-  downloads\CrispyDoom\CrispyDoom\crispy-doom.elf downloads\crispy-doom.exe
+```sh
+build/core/relinker/relinker.exe --windows downloads/input.elf downloads/output.exe
 ```
 
-Both currently report:
-
-```text
-System: Windows; unused-filter=0
-FAIL: Neither DT_OS_ nor DT_ variant present for DT_PLTGOT
-```
-
-## Why this is more than a missing table
-
-`RelinkerPipeline.cpp` unconditionally requires PLTGOT, PLTRELSZ, PLTREL, and JMPREL metadata. Inspection of Omnispeak with objdump shows ordinary RELA relocations but no PLTGOT/PLT relocation tags. Supporting ELF files without PLT relocations is a candidate improvement, but simply bypassing the requirement does not establish a runnable conversion.
-
-The [PS5 payload SDK startup](https://github.com/ps5-payload-dev/sdk/blob/master/crt/crt.c) takes a `payload_args_t` pointer and initializes console-specific kernel and dynamic-linker facilities. Its [entry assembly](https://github.com/ps5-payload-dev/sdk/blob/master/crt/_start.S) calls that startup. Homebrew payload startup therefore needs separate compatibility analysis and likely an adapter.
-
-Omnispeak imports `libkernel_web.sprx` and `libSceLibcInternal.sprx`, among other libraries. In this AnyPS5 revision, the former contains only `APS5_DUMMY_FUN`, while the latter exposes only a heap tracing stub. File presence is not evidence of implemented compatibility.
-
-## Suggested next milestones
-
-1. Create a tiny source-owned executable fixture with a documented entry ABI, one imported function, and a verifiable exit value. Relink it and execute the result on Windows.
-2. Add regression coverage for ELF files without PLT relocations before changing their handling.
-3. Report unsupported payload startup and missing imports explicitly, then implement the minimum required compatibility path.
-4. Advance to a framebuffer demo, input, and audio before retrying a complete homebrew game.
-
-Keep conversion, loader startup, first rendered frame, and playable gameplay as distinct results. A native Windows build of the same open-source engine is useful as a reference but is not evidence that PS5 binary conversion works.
+Check conversion, startup, rendering, input, and audio separately;
+conversion alone does not establish game compatibility.