diff --git a/docs/faust-toolchain-boundary.md b/docs/faust-toolchain-boundary.md
index 5027d99..2a717a1 100644
--- a/docs/faust-toolchain-boundary.md
+++ b/docs/faust-toolchain-boundary.md
@@ -91,25 +91,6 @@ search; `FaustHome` then supplies `share/faust` if the prefix is not the file's
 grandparent. The loader prepends `lib` and `bin` to `PATH` using the platform
 path separator.
 
-## Linux Native Toolchain
-
-Built and run on Debian 13 (2026-11-03). Faust `aa30fd7` (2.90.20), LLVM 19
-(`LLVM_CONFIG=/usr/lib/llvm-19/bin/llvm-config`, `INCLUDE_DYNAMIC=ON`,
-`backends/most.cmake`), installed to a prefix; `make -j4`. The first link
-failed with `cannot find -lPolly -lPollyISL -lzstd`; the install prefix that
-resulted has `lib/libfaust.so` but `share/faust` holds only the architecture
-files, not `stdfaust.lib` and the other `.lib` files (they live in the separate
-faustlibraries repo). Compiling any patch that imports `stdfaust.lib` then
-fails with `unable to open file stdfaust.lib`. Point `AQUASYNTH_FAUST_HOME` at a
-home whose `lib/` has `libfaust.so` and whose `share/faust` has both.
-
-`tools/FaustRender` renders one `.dsp` with an `rpm` control to WAVs plus
-`manifest.json` (hashes, peak, rms, non-finite flag). It measures; it does not
-listen. `docs/renders/thruster-v5-manifest.json` is its output for
-`patches/thruster/thruster.dsp` at PR #3 head `c6561da`, 4 s per case. The render is
-deterministic (two reruns byte-identical); the 2026-10-31 sweep file is a 6 s
-render, which is why its hash differs from a 4 s sweep.
-
 ## Invariants
 
 - AquaSynth remains the authority for what a patch means.
diff --git a/docs/renders/thruster-v5-manifest.json b/docs/renders/thruster-v5-manifest.json
deleted file mode 100644
index 1907dea..0000000
--- a/docs/renders/thruster-v5-manifest.json
+++ /dev/null
@@ -1,46 +0,0 @@
-{
-  "patch": "thruster",
-  "dspSha256": "8afc045eab94f396e21d96a262c5d71910103acd51da5913d3eb3036b48a5809",
-  "sampleRate": 48000,
-  "blockFrames": 512,
-  "seconds": 4,
-  "rpmControl": "rpm",
-  "os": "Debian GNU/Linux 13 (trixie)",
-  "faustHome": "/var/lib/mind-aqua-self/faust-home-overlay-20261031",
-  "faustLibrary": "/var/lib/mind-aqua-self/faust-home-overlay-20261031/lib/libfaust.so",
-  "cases": [
-    {
-      "label": "low-rpm600",
-      "file": "thruster-low-rpm600.wav",
-      "rpmStart": 600,
-      "rpmEnd": 600,
-      "frames": 192000,
-      "peak": 0.18832043,
-      "rms": 0.07348131804614891,
-      "nonFinite": false,
-      "sha256": "4aeaa1f4d9aa5d63025dd8b3d45b25fc6b030a366ba05237c0021b508308e0ba"
-    },
-    {
-      "label": "high-rpm4800",
-      "file": "thruster-high-rpm4800.wav",
-      "rpmStart": 4800,
-      "rpmEnd": 4800,
-      "frames": 192000,
-      "peak": 0.3635283,
-      "rms": 0.14323418081979195,
-      "nonFinite": false,
-      "sha256": "390874aa1d5c4d50f251fa0735b82f859bba43ffee4236fd24d5b06a4733ef7d"
-    },
-    {
-      "label": "sweep-600-4800",
-      "file": "thruster-sweep-600-4800.wav",
-      "rpmStart": 600,
-      "rpmEnd": 4800,
-      "frames": 192000,
-      "peak": 0.34473976,
-      "rms": 0.11363349353245127,
-      "nonFinite": false,
-      "sha256": "ad8d1508aa2b37b5038a6acfcfb21fc46ae04f0180adcd6ea60edc7e918e4068"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/tools/FaustRender/FaustRender.csproj b/tools/FaustRender/FaustRender.csproj
deleted file mode 100644
index 9dd3508..0000000
--- a/tools/FaustRender/FaustRender.csproj
+++ /dev/null
@@ -1,12 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net10.0</TargetFramework>
-    <ImplicitUsings>enable</ImplicitUsings>
-    <Nullable>enable</Nullable>
-    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-  </PropertyGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\..\src\AquaSynth.Faust\AquaSynth.Faust.csproj" />
-  </ItemGroup>
-</Project>
diff --git a/tools/FaustRender/Program.cs b/tools/FaustRender/Program.cs
deleted file mode 100644
index 1f0861b..0000000
--- a/tools/FaustRender/Program.cs
+++ /dev/null
@@ -1,90 +0,0 @@
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-using System.Security.Cryptography;
-using System.Text.Json;
-using AquaSynth.Faust;
-
-// Offline probe: render one Faust source with a swept `rpm` control to mono 16-bit WAVs through the
-// native libfaust path, and write manifest.json (hashes, levels, toolchain). It measures peak, rms and
-// NaN only; it cannot say how anything sounds.
-// usage: FaustRender <patch.dsp> <outDir> <seconds> <label>=<rpmA>[:<rpmB>] ...
-const int Rate = 48000, Frames = 512;
-if (args.Length < 4) { Console.Error.WriteLine("usage: FaustRender <patch.dsp> <outDir> <seconds> <label>=<rpmA>[:<rpmB>] ..."); return 2; }
-var dspPath = Path.GetFullPath(args[0]);
-var outDir = Path.GetFullPath(args[1]);
-var seconds = double.Parse(args[2]);
-var source = File.ReadAllText(dspPath);
-Directory.CreateDirectory(outDir);
-
-var home = AquaSynthFaustToolchain.Find();
-Console.WriteLine($"faust home: {home ?? "(not found)"}");
-using var compiler = new AquaSynthPatchCompiler(new AquaSynthNativeOptions(SampleRate: Rate));
-var name = Path.GetFileNameWithoutExtension(dspPath);
-if (!compiler.TryCompileSource(new AquaSynthCompileIdentity(name, name, ""), source, (float)seconds, out var patch0, out var cerr))
-{
-    Console.Error.WriteLine("COMPILE FAILED: " + cerr);
-    return 1;
-}
-
-using var patch = patch0!;
-var rpmPath = patch.ControlPaths.First(p => p.EndsWith("rpm"));
-var cases = new List<object>();
-foreach (var spec in args.Skip(3))
-{
-    var eq = spec.IndexOf('=');
-    var label = spec[..eq];
-    var range = spec[(eq + 1)..].Split(':');
-    var a = float.Parse(range[0]);
-    var b = range.Length > 1 ? float.Parse(range[1]) : a;
-
-    using var stream = patch.CreateStreamingPatch();
-    var buf = GC.AllocateArray<float>(Frames, pinned: true);
-    var ptrs = GC.AllocateArray<IntPtr>(1, pinned: true);
-    unsafe { ptrs[0] = (IntPtr)Unsafe.AsPointer(ref buf[0]); }
-    var outP = Marshal.UnsafeAddrOfPinnedArrayElement(ptrs, 0);
-    var blocks = (int)(seconds * Rate) / Frames;
-    var ctl = new Dictionary<string, float>();
-    var pcm = new short[blocks * Frames];
-    double sum = 0; float peak = 0; var nan = false;
-    for (var blk = 0; blk < blocks; blk++)
-    {
-        ctl[rpmPath] = a + (b - a) * blk / Math.Max(1, blocks - 1);
-        stream.ProcessBlock(Frames, IntPtr.Zero, outP, ctl);
-        for (var i = 0; i < Frames; i++)
-        {
-            var v = buf[i];
-            nan |= float.IsNaN(v) || float.IsInfinity(v);
-            peak = Math.Max(peak, Math.Abs(v));
-            sum += (double)v * v;
-            pcm[blk * Frames + i] = (short)(Math.Clamp(v, -1f, 1f) * 32767);
-        }
-    }
-
-    var wav = Path.Combine(outDir, $"{name}-{label}.wav");
-    using (var w = new BinaryWriter(File.Create(wav)))
-    {
-        var db = pcm.Length * 2;
-        w.Write("RIFF"u8); w.Write(36 + db); w.Write("WAVEfmt "u8); w.Write(16); w.Write((short)1); w.Write((short)1);
-        w.Write(Rate); w.Write(Rate * 2); w.Write((short)2); w.Write((short)16); w.Write("data"u8); w.Write(db);
-        foreach (var s in pcm) w.Write(s);
-    }
-
-    cases.Add(new
-    {
-        label, file = Path.GetFileName(wav), rpmStart = a, rpmEnd = b, frames = pcm.Length,
-        peak, rms = Math.Sqrt(sum / pcm.Length), nonFinite = nan,
-        sha256 = Convert.ToHexString(SHA256.HashData(File.ReadAllBytes(wav))).ToLowerInvariant()
-    });
-    Console.WriteLine($"{wav} rpm={a}->{b} peak={peak:F3} rms={Math.Sqrt(sum / pcm.Length):F4} nonFinite={nan}");
-}
-
-var manifest = new
-{
-    patch = name, dspSha256 = Convert.ToHexString(SHA256.HashData(File.ReadAllBytes(dspPath))).ToLowerInvariant(),
-    sampleRate = Rate, blockFrames = Frames, seconds, rpmControl = rpmPath,
-    os = RuntimeInformation.OSDescription, faustHome = home,
-    faustLibrary = home is null ? null : AquaSynthFaustToolchain.FindLibrary(home),
-    cases
-};
-File.WriteAllText(Path.Combine(outDir, "manifest.json"), JsonSerializer.Serialize(manifest, new JsonSerializerOptions { WriteIndented = true }));
-return 0;