ci: add gated native macOS guest build and tests on Ubuntu

.gitea/workflows/macos-native-full.yaml

@@ -0,0 +1,32 @@
+name: Native macOS build and tests on Ubuntu (experimental)
+
+on:
+  workflow_dispatch:
+
+jobs:
+  macos-native-full:
+    runs-on: ubuntu-latest
+    timeout-minutes: 180
+    env:
+      DOTNET_SKIP_FIRST_TIME_EXPERIENCE: "1"
+      DOTNET_NOLOGO: "1"
+    steps:
+      - name: Checkout exact native CI candidate
+        uses: actions/checkout@v7
+      - name: Setup .NET orchestration SDK
+        uses: actions/setup-dotnet@v6
+        with:
+          dotnet-version: "10.0.x"
+      - name: Run owned software macOS guest and all native tests
+        run: dotnet run --file tools/ci/MacOsNativeDiagnostic.cs -- --run --full --output artifacts/native-macos-full
+      - name: Always remove only this run's owned resources
+        if: always()
+        run: dotnet run --file tools/ci/MacOsNativeDiagnostic.cs -- --cleanup --output artifacts/native-macos-full
+      - name: Retain native build, signatures, TRX and guest receipts
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: native-macos-full
+          path: artifacts/native-macos-full/
+          if-no-files-found: error
+          retention-days: 7

docs/macos-native-diagnostic.md

@@ -29,3 +29,28 @@ Evidence is written under the requested output directory: run identity and candi
 Every container/image has a random run token in its ownership label. `finally` cleanup and the workflow's `always()` step inspect that exact label before removing the matching container and its anonymous storage volume, then the matching image. They never remove an unrelated name or volume, prune Docker, modify host settings or restart Meeting Assistant. Temporary source files are deleted only when their local marker matches the same token. Evidence remains available after cleanup.
 
 The earlier background-only local bootstrap never obtained DiskManagement readiness. This separate LaunchDaemon probe is still an experiment until the actual remote run produces the required native evidence. Full macOS CI support remains unverified until an installed guest subsequently compiles/signs the native helpers and passes all application tests, including all five native tests without skips.
+
+## Experimental full guest flow
+
+The separate `.gitea/workflows/macos-native-full.yaml` is also manual-only. Before a full attempt, inspect the candidate and its ownership boundaries and wait for the actual remote Recovery probe to qualify. The full acceptance review follows actual remote build/test verification. The full run repeats Recovery readiness in its own VM; it does not accept another run's disk receipt. The ordinary diagnostic workflow and checked-in read-only hook keep their read-only behavior.
+
+```sh
+dotnet run --file tools/ci/MacOsNativeDiagnostic.cs -- --validate --full --source /path/to/pinned/dockur-clone --output artifacts/native-full-validation
+dotnet run --file tools/ci/MacOsNativeGuest.cs -- --validate
+dotnet run --file tools/ci/MacOsNativeDiagnostic.cs -- --run --full --output artifacts/native-macos-full
+dotnet run --file tools/ci/MacOsNativeDiagnostic.cs -- --cleanup --output artifacts/native-macos-full
+```
+
+The host requires a clean exact Git HEAD, creates its Git/PAX source archive and SHA-256, and downloads macOS/x64 SDK `10.0.401` from Microsoft's release URL with the fixed official SHA-512 recorded in both helpers. Source archive, SDK and helper files are copied inside the image into the newly owned anonymous `/storage` volume; no workstation bind mount is introduced. The full flow uses persistent `/storage/14/ci-state` as its existing 9p share, with a run-owner marker and an erase guard that is never removed on installer failure. It never automatically restarts a container or retries erasure.
+
+Before the only guest `eraseDisk`, C# revalidates the owned Docker boundary, sole anonymous storage mount, exact 64-GiB raw image, live QEMU attachment and per-run emulated disk serial. Only after a valid native Recovery receipt does it atomically provide the run/commit/disk permit. The guarded Apple installer rechecks `diskutil` and the corresponding IORegistry serial; missing or ambiguous identity fails. Upstream `startosinstall`, USR1 bootstrap staging, Setup Assistant/admin packages and byte-for-byte staging checks remain in use. Installer reboots preserve the same QEMU process, disk, NVRAM and share. The readonly Recovery media stays attached.
+
+The existing firstboot LaunchDaemon invokes `tools/ci/macos-native-firstboot.sh` before its staging cleanup. This Bash seam is required because the guest has Apple boot tools but no .NET SDK yet. It proves installed APFS `/` belongs to the same owned 64-GiB physical disk, mounts the state share, installs a compatible Apple CLT catalog label through headless `softwareupdate`, verifies the CLT package/compiler and builds a framework smoke program. There is no GUI fallback, Apple account or new secret. `macos-native-disk-guard.sh` holds the shared pre-.NET Apple disk/IORegistry check. The existing upstream Python UDIF patcher remains the image-format runtime binding; both its exact patch matches and compressed-slot checks remain enforced.
+
+After verifying and extracting the SDK on the guest's own APFS work directory, `tools/ci/MacOsNativeGuest.cs` takes over. This .NET10 file-based slice validates payload hashes and safe Git tar paths/PAX commit, then performs restore/build/test for `net10.0` with `TZ=Europe/Berlin`. It requires fresh outputs for all four Swift helpers, actual Mach-O/x86_64 tools output and strict audio-app codesign verification. It accepts only fresh TRX with 577 total/executed/passed results, zero failures/skips and all five named macOS tests explicitly passed. TRX SHA-256 uses the same raw-byte snapshot as parsing, including any UTF-8 BOM.
+
+The full helper's outer deadline is 172 minutes; the job declares 180 minutes within the existing three-hour server limit, leaving time for evidence and owned-resource cleanup. Independent budgets are Recovery 40 minutes, installer 80, firstboot/CLT 30 and guest checks/restore/build/tests 25; the outer deadline also bounds their combined runtime and preparation. The same 4-GiB/two-CPU guest and 6-GiB container remain, with explicit sparse allocation. Full execution checks 32 GiB of existing Docker free space before Recovery downloads/boot and 8 GiB of guest free space before toolchain work. Insufficient resources, networking, Apple catalog availability, disk ownership, installer progress or test proof fail clearly without changing infrastructure.
+
+Artifacts add source/SDK hashes, generated pinned boot-source patches, installer/Apple/firstboot logs, installed-root/disk identity, native tool logs, guest phase and full-result receipts, native helper hashes and binary-preserved TRX. Bounded final build/test output and the full-result receipt are also printed in CI. Cleanup uses the same exact saved resource ID/ownership label through `finally` and workflow `always()`; it removes only this run's container/image/anonymous volume. Installed guest files disappear with that volume and retained CI evidence stays outside it. Shared Docker build cache is not pruned.
+
+Local `--validate` creates only patch/fixture evidence; it never starts Docker, installs an OS/toolchain, erases a disk, builds the application or runs native tests. With `--compression-chunk` it can read the retained qualified Recovery raw chunk and validate the unchanged LaunchDaemon/mount patch against Python zlib's real compressed slot, without changing the DMG. The IORegistry parser's root association and installed-APFS mapping still require the actual emulated guest's output; synthetic fixtures do not qualify that disk identity. This is a candidate until an actual remote installed guest produces every required native receipt.

tools/ci/MacOsNativeDiagnostic.cs

@@ -16,6 +16,9 @@ static class NativeDiagnostic
     const long GuestDiskBytes = 64L * 1024 * 1024 * 1024;
     const long ContainerMemoryBytes = 6L * 1024 * 1024 * 1024;
     const int MaximumCapturedCharacters = 8 * 1024 * 1024;
+    const string SdkVersion = "10.0.401";
+    const string SdkSha512 = "33401b4a2da8554e3306db6072ea8569d9fcc608509c271e0aa4b39e7cc432da3631f14e7e1e2445d67d72550d18ce44a8bbd2382a756867ad2edab6b1c963c0";
+    const string FullState = "/storage/14/ci-state";
     static readonly JsonSerializerOptions JsonOptions = new() { PropertyNamingPolicy = JsonNamingPolicy.CamelCase, WriteIndented = true };
     const string OriginalBootstrap = "[ ! -e /tmp/m ]&&{ /sbin/mount_9p installstate >/dev/null 2>&1;exec /Volumes/installstate/launch.sh;};: >/tmp/m\n";
     const string MountOnlyBootstrap = "[ ! -e /tmp/m ]&& /sbin/mount_9p installstate >/dev/null 2>&1; : >/tmp/m\n";
@@ -47,15 +50,20 @@ static class NativeDiagnostic
     {
         if (args.Length == 0 || args.Contains("--help"))
         {
-            Console.WriteLine("dotnet run --file tools/ci/MacOsNativeDiagnostic.cs -- --run|--cleanup|--validate [--output artifacts/native-macos] [--source existing-dockur-clone]");
+            Console.WriteLine("dotnet run --file tools/ci/MacOsNativeDiagnostic.cs -- --run|--cleanup|--validate [--full] [--output artifacts/native-macos] [--source existing-dockur-clone] [--compression-chunk readonly-qualified-chunk]");
             return 0;
         }
         var output = Path.GetFullPath(Option(args, "--output") ?? "artifacts/native-macos");
+        var full = args.Contains("--full");
         if (args.Contains("--validate"))
         {
             ValidateContracts();
+            if (full) ValidateFullContracts();
             if (Option(args, "--source") is { } source)
-                await PrepareSource(Path.GetFullPath(source), output, "validation", false, CancellationToken.None);
+                await PrepareSource(Path.GetFullPath(source), output, full ? new string('0', 32) : "validation", false, CancellationToken.None, full);
+            if (full) await ValidateDiskSerialParser(output);
+            if (Option(args, "--compression-chunk") is { } chunk)
+                await ValidateCompression(Path.GetFullPath(chunk), output);
             Console.WriteLine("Source patch contracts and diagnostic result validation passed; no Docker or guest execution occurred.");
             return 0;
         }
@@ -71,7 +79,9 @@ static class NativeDiagnostic
         Save(statePath, state);
         Directory.CreateDirectory(work);
         File.WriteAllText(Path.Combine(work, "run.owner"), token);
-        using var deadline = new CancellationTokenSource(TimeSpan.FromMinutes(40));
+        // Full execution leaves eight minutes within the existing 180-minute job for evidence/cleanup.
+        var deadlineMinutes = full ? 172 : 40;
+        using var deadline = new CancellationTokenSource(TimeSpan.FromMinutes(deadlineMinutes));
         using var signal = OperatingSystem.IsLinux() ? PosixSignalRegistration.Create(PosixSignal.SIGTERM, context => { context.Cancel = true; deadline.Cancel(); }) : null;
         ConsoleCancelEventHandler cancelHandler = (_, context) => { context.Cancel = true; deadline.Cancel(); };
         Console.CancelKeyPress += cancelHandler;
@@ -83,7 +93,7 @@ static class NativeDiagnostic
                 throw new InvalidOperationException("This diagnostic runs on the existing Linux/x64 runner only.");
             ValidateContracts();
             var sourceCommit = (await Command("git", ["rev-parse", "HEAD"], output, "candidate-commit", deadline.Token)).Output.Trim();
-            Save(Path.Combine(output, "run-metadata.json"), new { token, startedUtc = DateTimeOffset.UtcNow, sourceCommit, dockurCommit = DockurCommit, runId = Environment.GetEnvironmentVariable("GITHUB_RUN_ID"), server = Environment.GetEnvironmentVariable("GITHUB_SERVER_URL"), architecture = RuntimeInformation.ProcessArchitecture.ToString(), deadlineMinutes = 40 });
+            Save(Path.Combine(output, "run-metadata.json"), new { token, startedUtc = DateTimeOffset.UtcNow, sourceCommit, dockurCommit = DockurCommit, runId = Environment.GetEnvironmentVariable("GITHUB_RUN_ID"), server = Environment.GetEnvironmentVariable("GITHUB_SERVER_URL"), architecture = RuntimeInformation.ProcessArchitecture.ToString(), deadlineMinutes, mode = full ? "full" : "readiness" });
             var info = await Command("docker", ["info", "--format", "{{json .}}"], output, "docker-info", deadline.Token);
             using (var document = JsonDocument.Parse(info.Output))
             {
@@ -102,13 +112,17 @@ static class NativeDiagnostic
             await Command("git", ["-C", source, "checkout", "--detach", DockurCommit], output, "dockur-checkout", deadline.Token);
             var actualCommit = (await Command("git", ["-C", source, "rev-parse", "HEAD"], output, "dockur-commit", deadline.Token)).Output.Trim();
             if (actualCommit != DockurCommit) throw new InvalidOperationException("Dockur source pin mismatch.");
-            await PrepareSource(source, output, token, true, deadline.Token);
+            if (full) await PreparePayload(source, output, token, sourceCommit, deadline.Token);
+            await PrepareSource(source, output, token, true, deadline.Token, full);
             await Command("docker", ["build", "--platform", "linux/amd64", "--label", OwnerLabel + "=" + token, "--tag", state.ImageTag, source], output, "docker-build", deadline.Token, echo: true);
             var imageInspect = await Command("docker", ["image", "inspect", state.ImageTag], output, "image-inspect", deadline.Token);
             using (var image = JsonDocument.Parse(imageInspect.Output))
                 state = state with { ImageId = image.RootElement[0].GetProperty("Id").GetString() };
             Save(statePath, state);
-            var create = await Command("docker", ["create", "--name", state.ContainerName, "--label", OwnerLabel + "=" + token, "--memory", "6g", "--memory-swap", "6g", "--cpus", "2", "--shm-size", "512m", "--log-opt", "max-size=8m", "--log-opt", "max-file=1", "--env", "KVM=N", "--env", "NETWORK=slirp", "--env", "DISPLAY=web", "--env", "MANUAL=N", "--env", "VERSION=14", "--env", "RAM_SIZE=4G", "--env", "CPU_CORES=2", "--env", "DISK_SIZE=64G", "--env", "DISK_TYPE=sata", "--env", "ARGUMENTS=-object iothread,id=io2", state.ImageTag], output, "docker-create", deadline.Token);
+            List<string> createArguments = ["create", "--name", state.ContainerName, "--label", OwnerLabel + "=" + token, "--memory", "6g", "--memory-swap", "6g", "--cpus", "2", "--shm-size", "512m", "--log-opt", "max-size=8m", "--log-opt", "max-file=1", "--env", "KVM=N", "--env", "NETWORK=slirp", "--env", "DISPLAY=web", "--env", "MANUAL=N", "--env", "VERSION=14", "--env", "RAM_SIZE=4G", "--env", "CPU_CORES=2", "--env", "DISK_SIZE=64G", "--env", "DISK_TYPE=sata", "--env", "ARGUMENTS=-object iothread,id=io2"];
+            if (full) createArguments.AddRange(["--env", "ALLOCATE=N", "--env", "DISK_OPTIONS=serial=" + DiskSerial(token)]);
+            createArguments.Add(state.ImageTag);
+            var create = await Command("docker", createArguments.ToArray(), output, "docker-create", deadline.Token);
             var id = create.Output.Trim();
             if (!System.Text.RegularExpressions.Regex.IsMatch(id, "^[0-9a-f]{64}$")) throw new InvalidOperationException("Docker did not return a container identity.");
             state = state with { ContainerId = id };
@@ -116,19 +130,58 @@ static class NativeDiagnostic
             await Command("docker", ["inspect", id], output, "container-created", deadline.Token);
             AssertContainer(File.ReadAllText(Path.Combine(output, "container-created.stdout.log")), token);
             await Command("docker", ["start", id], output, "docker-start", deadline.Token);
-            Console.WriteLine("The owned unprivileged TCG guest is starting. Success requires native macOS 14+/x86_64 and a writable 64-GiB disk; no installer will run.");
+            Console.WriteLine(full ? "The owned unprivileged TCG guest is starting. Installation requires a fresh native readiness receipt and an explicit owned-disk permit; success requires all 577 tests with zero skips." : "The owned unprivileged TCG guest is starting. Success requires native macOS 14+/x86_64 and a writable 64-GiB disk; no installer will run.");
+            var phaseStarted = Stopwatch.StartNew();
+            var phase = "recovery";
+            var phaseBudget = TimeSpan.FromMinutes(40);
+            var permitted = false;
             while (true)
             {
                 deadline.Token.ThrowIfCancellationRequested();
-                await CaptureGuest(id, output, deadline.Token);
+                await CaptureGuest(id, output, deadline.Token, full);
+                if (full && phaseStarted.Elapsed > phaseBudget)
+                    throw new InvalidOperationException("The bounded native " + phase + " phase exceeded " + phaseBudget.TotalMinutes + " minutes.");
                 var resultPath = Path.Combine(output, "guest-result.json");
-                if (File.Exists(resultPath))
+                if (File.Exists(resultPath) && !permitted)
                 {
                     var result = File.ReadAllText(resultPath);
                     ValidateResult(result, token);
+                    if (full)
+                    {
+                        await PermitInstallation(id, output, token, sourceCommit, result, deadline.Token);
+                        permitted = true;
+                        phase = "installation";
+                        phaseBudget = TimeSpan.FromMinutes(80);
+                        phaseStarted.Restart();
+                    }
+                    else
+                    {
                     Console.WriteLine("Native Recovery readiness passed. This run has not installed macOS, .NET, CLT, or run Meeting Assistant tests.");
                     outcome = "readiness-passed";
                     break;
+                    }
+                }
+                if (full && permitted)
+                {
+                    var phasePath = Path.Combine(output, "guest-phase.json");
+                    if (File.Exists(phasePath))
+                    {
+                        using var nativePhase = JsonDocument.Parse(File.ReadAllText(phasePath));
+                        if (nativePhase.RootElement.GetProperty("token").GetString() != token) throw new InvalidOperationException("Stale native phase receipt.");
+                        var current = nativePhase.RootElement.GetProperty("phase").GetString();
+                        var next = current == "toolchain-installing" ? "toolchain" : current is "tests-running" or "tests-passed" ? "tests" : phase;
+                        if (next != phase) { phase = next; phaseBudget = TimeSpan.FromMinutes(next == "toolchain" ? 30 : 25); phaseStarted.Restart(); Console.WriteLine("[native-diagnostic] phase: " + phase); }
+                        if (current is "tests-failed" or "bootstrap-failed" or "installation-failed") throw new InvalidOperationException("Guest phase failed: " + current);
+                    }
+                    var fullResult = Path.Combine(output, "full-result.json");
+                    if (File.Exists(fullResult))
+                    {
+                        ValidateFullResult(File.ReadAllText(fullResult), token, sourceCommit, File.ReadAllText(Path.Combine(output, "archive.sha256")).Trim());
+                        ValidateTrx(File.ReadAllBytes(Path.Combine(output, "native.trx")), File.ReadAllText(fullResult));
+                        outcome = "native-tests-passed";
+                        Console.WriteLine("Native macOS 577/577 tests passed, including all five native tests, with fresh Mach-O/x86_64 and codesign evidence.");
+                        break;
+                    }
                 }
                 var running = await Command("docker", ["inspect", "--format", "{{.State.Running}}", id], output, "container-running", deadline.Token);
                 if (running.Output.Trim() != "true") throw new InvalidOperationException("Guest container exited before a native readiness result.");
@@ -137,20 +190,21 @@ static class NativeDiagnostic
         }
         catch (Exception exception)
         {
-            error = exception is OperationCanceledException ? "The explicit 40-minute diagnostic deadline or cancellation was reached." : exception.Message;
+            error = exception is OperationCanceledException ? $"The explicit {deadlineMinutes}-minute diagnostic deadline or cancellation was reached." : exception.Message;
             Console.Error.WriteLine(error);
         }
         finally
         {
             Console.CancelKeyPress -= cancelHandler;
             using var captureDeadline = new CancellationTokenSource(TimeSpan.FromSeconds(45));
-            try { await CaptureGuest(state.ContainerName, output, captureDeadline.Token); } catch (Exception exception) { Console.Error.WriteLine("Final evidence capture: " + exception.Message); }
+            try { await CaptureGuest(state.ContainerName, output, captureDeadline.Token, full, true); } catch (Exception exception) { Console.Error.WriteLine("Final evidence capture: " + exception.Message); }
             try { PrintGuestProof(output, state.Token); } catch (Exception exception) { Console.Error.WriteLine("Native proof output: " + exception.Message); }
+            if (full) try { PrintFullProof(output, state.Token); } catch (Exception exception) { Console.Error.WriteLine("Full native proof output: " + exception.Message); }
             var clean = await Cleanup(output);
             if (!clean) { outcome = "failed"; error = (error ?? "") + " Owned-resource cleanup failed; inspect cleanup evidence."; }
             Save(Path.Combine(output, "outcome.json"), new { token, outcome, error, completedUtc = DateTimeOffset.UtcNow });
         }
-        return outcome == "readiness-passed" ? 0 : 1;
+        return outcome is "readiness-passed" or "native-tests-passed" ? 0 : 1;
     }
 
     static string? Option(string[] args, string name)
@@ -172,7 +226,7 @@ static class NativeDiagnostic
         }
     }
 
-    static async Task PrepareSource(string source, string output, string token, bool writeSource, CancellationToken cancellation)
+    static async Task PrepareSource(string source, string output, string token, bool writeSource, CancellationToken cancellation, bool full = false)
     {
         Directory.CreateDirectory(output);
         var patchPath = Path.Combine(source, "src/install/recovery/patch.py");
@@ -184,12 +238,21 @@ static class NativeDiagnostic
         var constants = "RECOVERY_ORIGINAL = b'''" + daemon + "'''\nRECOVERY_REPLACEMENT = b'''" + DiagnosticDaemon + "'''.ljust(len(RECOVERY_ORIGINAL), b\" \")";
         patch = ReplaceOnce(patch, oldConstants, constants);
         var dockerPath = Path.Combine(source, "Dockerfile");
-        var dockerfile = ReplaceOnce(File.ReadAllText(dockerPath), "--from=qemux/qemu:7.50 ", "--from=qemux/qemu:7.50@sha256:e7f6fda52503a546fd649670ba46e4bc23dc6dcef275bc3fac48877fbbc430df ");
+        // The actual remote BuildKit cannot checksum a dangling symlink during root COPY.
+        // Start directly from the same immutable image filesystem; its inspected Config is empty.
+        var dockerfile = ReplaceOnce(File.ReadAllText(dockerPath), "FROM scratch AS base\nCOPY --from=qemux/qemu:7.50 --exclude=usr/bin/qemu-system-x86_64 / /\n", "FROM qemux/qemu:7.50@sha256:e7f6fda52503a546fd649670ba46e4bc23dc6dcef275bc3fac48877fbbc430df AS base\n");
         dockerfile = ReplaceAllExact(dockerfile, "--from=qemux/qemu-macos:latest ", "--from=qemux/qemu-macos:latest@sha256:af64297171228f27d5f616249e18f6ad5e2fbc79c1cc517252521e8bcd8eadaa ", 2);
         var entryPath = Path.Combine(source, "src/entry.sh");
         var entry = ReplaceOnce(File.ReadAllText(entryPath), "set -Eeuo pipefail\n", "set -Eeuo pipefail\n\n# Diagnostic budget: inspect existing Docker storage before Recovery download/boot.\ndf -Pk /storage\nfree_kib=$(df -Pk /storage | awk 'NR==2 {print $4}')\n[[ \"$free_kib\" =~ ^[0-9]+$ ]] && (( free_kib >= 8 * 1024 * 1024 )) || { echo 'Existing Docker storage has less than the 8-GiB diagnostic budget.' >&2; exit 1; }\n");
         var hookPath = Path.Combine("tools", "ci", "macos-native-readiness.sh");
         var hook = ReplaceOnce(File.ReadAllText(hookPath), "@@PROOF_TOKEN@@", token);
+        if (full)
+        {
+            await PrepareFullSource(source, output, token, writeSource, cancellation);
+            hook = CreateFullReadiness(hook);
+            dockerfile += "\n# Payload stays inside this image and its owned anonymous storage volume.\nCOPY ci-payload/ /assets/ci-payload/\n";
+            entry = ReplaceOnce(entry, "free_kib >= 8 * 1024 * 1024", "free_kib >= 32 * 1024 * 1024").Replace("8-GiB diagnostic budget", "32-GiB full-run budget", StringComparison.Ordinal);
+        }
         foreach (var pair in new[] { ("recovery-patch.py", patch), ("Dockerfile.patched", dockerfile), ("container-entry.sh", entry), ("guest-launch.sh", hook), ("recoveryosd-original.plist", daemon), ("recoveryosd-diagnostic.plist", DiagnosticDaemon), ("early-bootstrap.sh", MountOnlyBootstrap) })
             File.WriteAllText(Path.Combine(output, pair.Item1), pair.Item2, new UTF8Encoding(false));
         Save(Path.Combine(output, "source-hashes.json"), Directory.GetFiles(output).Where(path => Path.GetFileName(path) is "recovery-patch.py" or "Dockerfile.patched" or "container-entry.sh" or "guest-launch.sh" or "recoveryosd-original.plist" or "recoveryosd-diagnostic.plist" or "early-bootstrap.sh").ToDictionary(path => Path.GetFileName(path)!, path => Hash(File.ReadAllBytes(path))));
@@ -203,6 +266,245 @@ static class NativeDiagnostic
     }
 
     static string ReplaceOnce(string text, string oldValue, string newValue) => ReplaceAllExact(text, oldValue, newValue, 1);
+
+    static string DiskSerial(string token) => token[..20];
+
+    static async Task PreparePayload(string source, string output, string token, string commit, CancellationToken cancellation)
+    {
+        if (!System.Text.RegularExpressions.Regex.IsMatch(commit, "^[0-9a-f]{40}$")) throw new InvalidOperationException("Candidate commit is not an exact Git SHA.");
+        var status = await Command("git", ["status", "--porcelain", "--untracked-files=all"], output, "source-cleanliness", cancellation);
+        if (!string.IsNullOrEmpty(status.Output)) throw new InvalidOperationException("Full CI requires a clean exact HEAD; commit the reviewable candidate before running it.");
+        var payload = Path.Combine(source, "ci-payload");
+        Directory.CreateDirectory(payload);
+        var archive = Path.Combine(payload, "source.tar");
+        await Command("git", ["archive", "--format=tar", "--output", archive, commit], output, "source-archive", cancellation);
+        var archiveHash = Hash(File.ReadAllBytes(archive));
+        File.WriteAllText(Path.Combine(output, "archive.sha256"), archiveHash + "\n");
+        File.WriteAllText(Path.Combine(payload, "source.commit"), commit + "\n");
+        Save(Path.Combine(payload, "payload.json"), new { runToken = token, sourceCommit = commit, archiveSha256 = archiveHash, sdkVersion = SdkVersion, sdkSha512 = SdkSha512, expectedTests = 577 });
+        File.Copy(Path.Combine(payload, "payload.json"), Path.Combine(output, "payload.json"));
+        foreach (var pair in new[] { ("MacOsNativeGuest.cs", "MacOsNativeGuest.cs"), ("macos-native-firstboot.sh", "native-firstboot-bootstrap.sh"), ("macos-native-disk-guard.sh", "macos-native-disk-guard.sh") })
+            File.Copy(Path.Combine("tools", "ci", pair.Item1), Path.Combine(payload, pair.Item2));
+        Console.WriteLine("[native-diagnostic] pinned-sdk-download");
+        using var downloadDeadline = CancellationTokenSource.CreateLinkedTokenSource(cancellation);
+        downloadDeadline.CancelAfter(TimeSpan.FromMinutes(15));
+        using var client = new HttpClient { Timeout = Timeout.InfiniteTimeSpan };
+        using var response = await client.GetAsync($"https://builds.dotnet.microsoft.com/dotnet/Sdk/{SdkVersion}/dotnet-sdk-{SdkVersion}-osx-x64.tar.gz", HttpCompletionOption.ResponseHeadersRead, downloadDeadline.Token);
+        response.EnsureSuccessStatusCode();
+        var sdkPath = Path.Combine(payload, "sdk.tar.gz");
+        await using (var sdk = File.Create(sdkPath))
+        await using (var stream = await response.Content.ReadAsStreamAsync(downloadDeadline.Token))
+            await stream.CopyToAsync(sdk, downloadDeadline.Token);
+        await using (var sdk = File.OpenRead(sdkPath))
+            if (Convert.ToHexStringLower(await SHA512.HashDataAsync(sdk, downloadDeadline.Token)) != SdkSha512) throw new InvalidOperationException("Official macOS/x64 SDK SHA-512 mismatch.");
+        Save(Path.Combine(output, "payload-hashes.json"), Directory.GetFiles(payload).ToDictionary(path => Path.GetFileName(path)!, path => Hash(File.ReadAllBytes(path))));
+    }
+
+    static string ReadPinned(string source, string path, string expected)
+    {
+        var bytes = File.ReadAllBytes(Path.Combine(source, path));
+        if (Hash(bytes) != expected) throw new InvalidOperationException("Pinned full-install source hash mismatch: " + path);
+        return Encoding.UTF8.GetString(bytes);
+    }
+
+    static string CreateFullReadiness(string hook) => ReplaceOnce(hook,
+        "  # Keep the service alive for the bounded host diagnostic to capture evidence.\n  while :; do sleep 60; done",
+        """
+          # Full mode waits for the host's independently validated fresh owned-disk permit.
+          if [ "$success" = true ]; then
+            permit_start=$SECONDS
+            while (( SECONDS - permit_start < 300 )); do
+              if [ -s "$STATE_DIR/install.permit" ]; then
+                exec /bin/bash "$STATE_DIR/full-install.sh"
+              fi
+              sleep 1
+            done
+            printf '[full-install] host permit was not received in five minutes\n' >> "$PROOF_LOG"
+          fi
+          while :; do sleep 60; done
+        """);
+
+    static async Task PrepareFullSource(string source, string output, string token, bool writeSource, CancellationToken cancellation)
+    {
+        var installer = ReadPinned(source, "src/install/recovery/launch.sh", "b44309d1056bbd0321251cc9f04a52cf6ad68209586f263b9619339bf7146b6c");
+        var selectorStart = installer.IndexOf("select_target_disk() {", StringComparison.Ordinal);
+        var selectorEnd = installer.IndexOf("find_startosinstall() {", StringComparison.Ordinal);
+        if (selectorStart < 0 || selectorEnd <= selectorStart) throw new InvalidOperationException("Pinned installer selector boundaries changed.");
+        var selector = """
+        select_target_disk() {
+          local permit_token permit_disk permit_commit extra
+          { IFS= read -r permit_token; IFS= read -r permit_disk; IFS= read -r permit_commit; IFS= read -r extra || :; } < "$STATE_DIR/install.permit" || return 1
+          [ "$permit_token" = "$PROOF_TOKEN" ] && [ -z "${extra:-}" ] || return 1
+          [ "$permit_commit" = "$(cat "$STATE_DIR/source.commit")" ] || return 1
+          [[ "$permit_commit" =~ ^[0-9a-f]{40}$ ]] || return 1
+          . "$STATE_DIR/macos-native-disk-guard.sh"
+          verify_owned_disk "$permit_disk" "$STATE_DIR" "$PROOF_TOKEN" >&2 || return 1
+          printf '%s\n' "$permit_disk"
+        }
+
+        """ + "\n";
+        installer = ReplaceOnce(installer, installer[selectorStart..selectorEnd], selector);
+        installer = ReplaceOnce(installer, "MIN_TARGET_SIZE=$((16 * 1024 * 1024 * 1024))", "# Target policy is exclusively the own writable 64-GiB emulated disk.");
+        installer = ReplaceOnce(installer, "no writable installation disk of at least 16 GiB was found", "the run-owned writable 64-GiB installation disk was not proved");
+        installer = ReplaceAllExact(installer, "rm -f \"$STARTED\"", ": # Keep the owned erase guard on failure; never erase again.", 2);
+        installer = ReplaceOnce(installer, ": > \"$STARTED\" || fail \"failed to create installation guard\"", "( set -o noclobber; printf '%s:%s:%s\\n' \"$PROOF_TOKEN\" \"$(cat \"$STATE_DIR/source.commit\")\" \"$TARGET_DISK\" > \"$STARTED\" ) || fail \"failed to create the exclusive owned installation guard\"");
+        installer = ReplaceOnce(installer, "set -u\n", "set -u\nPROOF_TOKEN=\"" + token + "\"\n" + """
+        installer_parent=$$
+        # Installer watchdog: 80 minutes, also bounded by the host's 172-minute total.
+        (
+          trap 'kill "$sleeper" 2>/dev/null || :; exit 0' TERM INT
+          sleep 4800 & sleeper=$!; wait "$sleeper"; kill -TERM "$installer_parent" 2>/dev/null || :
+        ) & install_watchdog=$!
+        trap 'kill -TERM "$install_watchdog" 2>/dev/null || :; wait "$install_watchdog" 2>/dev/null || :' EXIT
+        trap 'kill "${STARTOSINSTALL_PID:-}" "${BOOTSTRAPPER_PID:-}" 2>/dev/null || :; printf "{\"token\":\"%s\",\"phase\":\"installation-failed\"}\n" "$PROOF_TOKEN" > /Volumes/installstate/guest-phase.json; exit 1' TERM INT
+        """ + "\n");
+        var firstboot = ReadPinned(source, "src/install/firstboot/launch.sh", "d6b29bb42ffe99edda6b3be3faf6009c4e0b34e5b8bba6eb0855cf24a0c24307");
+        firstboot = ReplaceOnce(firstboot, "log \"prebuilt account package installed successfully\"\n", "log \"prebuilt account package installed successfully\"\n" + """
+        count=0
+        while [ ! -d /Volumes/installstate ] && (( count < 120 )); do
+          /sbin/mount_9p installstate >/dev/null 2>&1 || :
+          count=$((count + 1)); sleep 1
+        done
+        [ -d /Volumes/installstate ] || fail "native CI state share did not mount"
+        """ + "\n/bin/bash /Volumes/installstate/native-firstboot-bootstrap.sh \"" + token + "\" || fail \"native CI bootstrap or tests failed\"\n");
+        ReadPinned(source, "src/install/firstboot/com.dockur.macos.firstboot.plist", "29ef05388d962c236bdb87b2911e3b42e08c600035cfccf440d35ba64011c3d3");
+        ReadPinned(source, "src/image.sh", "c08bf9436fb8b72ea82fdf0e677641ab2fc42a0a59e2cf0309c00df519884c5c");
+        var initialize = ReadPinned(source, "src/install.sh", "19b4b27187de85148ad1de1c40d75a54738eb9890f02dbb9445155bb5ec44f90");
+        initialize = ReplaceOnce(initialize, "INSTALL_STATE_DIR=\"$QEMU_DIR/installstate\"\nrm -rf \"$INSTALL_STATE_DIR\"", "INSTALL_STATE_DIR=\"$STORAGE/ci-state\"\n# Full CI preserves the own-volume erase guard and evidence across starts.");
+        initialize = ReplaceOnce(initialize, "  if ! prepareInstallationState \"$INSTALL_STATE_DIR\"; then\n    exit 34\n  fi", """
+          if [ -e "$INSTALL_STATE_DIR/run.owner" ]; then
+            [ "$(cat "$INSTALL_STATE_DIR/run.owner")" = "@@OWNER@@" ] || { error "CI storage belongs to another run."; exit 34; }
+          else
+            prepareInstallationState "$INSTALL_STATE_DIR" || exit 34
+            cp -f /assets/ci-payload/* "$INSTALL_STATE_DIR/" || exit 34
+            cp -f "$IMAGE_TOOLS/recovery/full-install.sh" "$INSTALL_STATE_DIR/full-install.sh" || exit 34
+            cmp -s "$IMAGE_TOOLS/recovery/full-install.sh" "$INSTALL_STATE_DIR/full-install.sh" || exit 34
+            for file in /assets/ci-payload/*; do cmp -s "$file" "$INSTALL_STATE_DIR/${file##*/}" || exit 34; done
+            chmod 0755 "$INSTALL_STATE_DIR/full-install.sh" "$INSTALL_STATE_DIR/native-firstboot-bootstrap.sh" || exit 34
+            printf '%s\n' '@@OWNER@@' > "$INSTALL_STATE_DIR/run.owner" || exit 34
+          fi
+        """.Replace("@@OWNER@@", token, StringComparison.Ordinal));
+        foreach (var pair in new[] { ("full-install.sh", installer), ("full-firstboot.sh", firstboot), ("full-state-source.sh", initialize) })
+        {
+            File.WriteAllText(Path.Combine(output, pair.Item1), pair.Item2, new UTF8Encoding(false));
+            await Command("bash", ["-n", Path.Combine(output, pair.Item1)], output, pair.Item1 + "-syntax", cancellation);
+        }
+        foreach (var name in new[] { "macos-native-firstboot.sh", "macos-native-disk-guard.sh" })
+            await Command("bash", ["-n", Path.Combine("tools", "ci", name)], output, name + "-syntax", cancellation);
+        Save(Path.Combine(output, "full-source-hashes.json"), new Dictionary<string, string> { ["full-install.sh"] = Hash(Encoding.UTF8.GetBytes(installer)), ["full-firstboot.sh"] = Hash(Encoding.UTF8.GetBytes(firstboot)), ["full-state-source.sh"] = Hash(Encoding.UTF8.GetBytes(initialize)), ["MacOsNativeGuest.cs"] = Hash(File.ReadAllBytes("tools/ci/MacOsNativeGuest.cs")), ["macos-native-firstboot.sh"] = Hash(File.ReadAllBytes("tools/ci/macos-native-firstboot.sh")), ["macos-native-disk-guard.sh"] = Hash(File.ReadAllBytes("tools/ci/macos-native-disk-guard.sh")) });
+        if (!writeSource) return;
+        File.WriteAllText(Path.Combine(source, "src/install/recovery/full-install.sh"), installer, new UTF8Encoding(false));
+        File.WriteAllText(Path.Combine(source, "src/install/firstboot/launch.sh"), firstboot, new UTF8Encoding(false));
+        File.WriteAllText(Path.Combine(source, "src/install.sh"), initialize, new UTF8Encoding(false));
+    }
+
+    static async Task PermitInstallation(string id, string output, string token, string commit, string readiness, CancellationToken cancellation)
+    {
+        await Command("docker", ["inspect", id], output, "full-container-boundary", cancellation);
+        AssertContainer(File.ReadAllText(Path.Combine(output, "full-container-boundary.stdout.log")), token);
+        using (var document = JsonDocument.Parse(File.ReadAllText(Path.Combine(output, "full-container-boundary.stdout.log"))))
+        {
+            var mounts = document.RootElement[0].GetProperty("Mounts").EnumerateArray().ToArray();
+            if (mounts.Length != 1 || mounts[0].GetProperty("Type").GetString() != "volume" || mounts[0].GetProperty("Destination").GetString() != "/storage" || !mounts[0].GetProperty("RW").GetBoolean()) throw new InvalidOperationException("Full installer requires only the newly owned anonymous /storage volume.");
+        }
+        var drive = await Command("docker", ["exec", id, "qemu-img", "info", "--force-share", "--output=json", "/storage/14/data.img"], output, "owned-raw-disk", cancellation);
+        using (var document = JsonDocument.Parse(drive.Output))
+            if (document.RootElement.GetProperty("format").GetString() != "raw" || document.RootElement.GetProperty("virtual-size").GetInt64() != GuestDiskBytes) throw new InvalidOperationException("Owned VM raw-disk capacity/format mismatch.");
+        var attachment = await Command("docker", ["exec", id, "sh", "-c", "qemu_pid=$(cat /dev/shm/qemu.pid); tr '\\0' '\\n' < /proc/\"$qemu_pid\"/cmdline | sed -n '/^file=\\/storage\\/14\\/data\\.img,/p; /^ide-hd,drive=data3,/p; /^local,id=installstatefs,/p'"], output, "owned-disk-attachment", cancellation);
+        var lines = attachment.Output.Split('\n', StringSplitOptions.RemoveEmptyEntries);
+        if (lines.Length != 3 || !lines.Any(line => line.StartsWith("file=/storage/14/data.img,id=data3,format=raw,", StringComparison.Ordinal) && !line.Contains("readonly=on", StringComparison.Ordinal)) || !lines.Any(line => line.StartsWith("ide-hd,drive=data3,", StringComparison.Ordinal) && line.Contains("serial=" + DiskSerial(token), StringComparison.Ordinal)) || !lines.Contains("local,id=installstatefs,path=" + FullState + ",security_model=none")) throw new InvalidOperationException("QEMU did not attach the exact owned raw disk/serial and persistent state share.");
+        var owner = await Command("docker", ["exec", id, "cat", FullState + "/run.owner"], output, "full-share-owner", cancellation);
+        if (owner.Output.Trim() != token) throw new InvalidOperationException("Native state owner mismatch.");
+        using var receipt = JsonDocument.Parse(readiness);
+        var disk = receipt.RootElement.GetProperty("disk").GetString();
+        var permit = Path.Combine(output, "install.permit");
+        File.WriteAllText(permit, token + "\n" + disk + "\n" + commit + "\n");
+        await Command("docker", ["cp", permit, id + ":" + FullState + "/install.permit.tmp"], output, "stage-owned-install-permit", cancellation);
+        await Command("docker", ["exec", id, "mv", FullState + "/install.permit.tmp", FullState + "/install.permit"], output, "authorize-owned-guest-installation", cancellation);
+    }
+
+    static readonly string[] NativeFacts = [
+        "MeetingAssistant.Tests.MacOsMeetingAudioSourceTests.NativeAudioCaptureIsPackagedAsSignedMacOsAppForPersistentPrivacyGrant",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.MacOsCapabilityEndpointReportsEnabledRealProviders",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.NativeHelperAdvertisesCalendarPromptAndScreenshotFeatures",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.NativeHelperCropsPngUsingOcrPixelCoordinates",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.CalendarClientFallsBackToCalendarAutomationWhenEventKitIsDenied"];
+    static readonly string[] NativeArtifacts = ["MeetingAssistantAudioCapture.app/Contents/MacOS/macos-meeting-audio-capture", "macos-desktop-controls", "macos-meeting-integrations", "macos-meeting-assistant-launcher"];
+
+    static void ValidateFullResult(string json, string token, string commit, string archiveHash)
+    {
+        using var document = JsonDocument.Parse(json);
+        var result = document.RootElement;
+        if (result.GetProperty("token").GetString() != token || !result.GetProperty("success").GetBoolean() || result.GetProperty("sourceCommit").GetString() != commit || result.GetProperty("archiveSha256").GetString() != archiveHash || result.GetProperty("sdkVersion").GetString() != SdkVersion || !Version.TryParse(result.GetProperty("osVersion").GetString(), out var version) || version.Major < 14 || result.GetProperty("architecture").GetString() != "x86_64" || new[] { "expectedTests", "total", "executed", "passed" }.Any(key => result.GetProperty(key).GetInt32() != 577) || new[] { "failed", "notExecuted", "audioCodeSignExit" }.Any(key => result.GetProperty(key).GetInt32() != 0) || !result.GetProperty("nativeTests").EnumerateArray().Select(value => value.GetString()).Order().SequenceEqual(NativeFacts.Order())) throw new InvalidOperationException("Native full receipt did not prove exact-source 577/577 with all five native tests and zero skips.");
+        var artifacts = result.GetProperty("nativeArtifacts").EnumerateArray().ToArray();
+        if (artifacts.Length != 4 || !artifacts.Select(item => item.GetProperty("name").GetString()).Order().SequenceEqual(NativeArtifacts.Order()) || artifacts.Any(item => item.GetProperty("architecture").GetString() != "x86_64" || !System.Text.RegularExpressions.Regex.IsMatch(item.GetProperty("sha256").GetString() ?? "", "^[0-9a-f]{64}$"))) throw new InvalidOperationException("Native Mach-O/x86_64 helper manifest is incomplete.");
+    }
+
+    static void ValidateTrx(byte[] bytes, string json)
+    {
+        using var receipt = JsonDocument.Parse(json);
+        if (Hash(bytes) != receipt.RootElement.GetProperty("trxSha256").GetString()) throw new InvalidOperationException("Returned native TRX SHA-256 mismatch.");
+        var document = XDocument.Load(new MemoryStream(bytes));
+        var counters = document.Descendants().Single(item => item.Name.LocalName == "Counters");
+        foreach (var key in new[] { "total", "executed", "passed" }) if ((int?)counters.Attribute(key) != 577) throw new InvalidOperationException("Native TRX count mismatch: " + key);
+        foreach (var key in new[] { "failed", "notExecuted" }) if ((int?)counters.Attribute(key) != 0) throw new InvalidOperationException("Native TRX failure/skip counter: " + key);
+        var results = document.Descendants().Where(item => item.Name.LocalName == "UnitTestResult").ToArray();
+        if (results.Length != 577 || results.Any(item => (string?)item.Attribute("outcome") != "Passed")) throw new InvalidOperationException("Native TRX contains missing, failed or skipped results.");
+        var identities = document.Descendants().Where(item => item.Name.LocalName == "UnitTest").ToDictionary(item => (string)item.Attribute("id")!, item => { var method = item.Elements().Single(child => child.Name.LocalName == "TestMethod"); var className = ((string?)method.Attribute("className"))?.Split(',')[0].Trim() ?? ""; var name = (string?)method.Attribute("name") ?? ""; return name.StartsWith(className + ".", StringComparison.Ordinal) ? name : className + "." + name; });
+        var passed = results.Select(item => identities[(string)item.Attribute("testId")!]).ToHashSet();
+        if (NativeFacts.Any(name => !passed.Contains(name))) throw new InvalidOperationException("Native TRX does not explicitly pass every required macOS fact.");
+    }
+
+    static void ValidateFullContracts()
+    {
+        var token = new string('a', 32); var commit = new string('b', 40); var hash = new string('c', 64);
+        var trx = "<TestRun><TestDefinitions>" + string.Concat(Enumerable.Range(0, 577).Select(index => { var identity = index < 5 ? NativeFacts[index] : "MeetingAssistant.Tests.Validation.Test" + index; var split = identity.LastIndexOf('.'); return $"<UnitTest id='t{index}'><TestMethod className='{identity[..split]}' name='{identity[(split + 1)..]}' /></UnitTest>"; })) + "</TestDefinitions><Results>" + string.Concat(Enumerable.Range(0, 577).Select(index => $"<UnitTestResult testId='t{index}' outcome='Passed' />")) + "</Results><ResultSummary><Counters total='577' executed='577' passed='577' failed='0' notExecuted='0' /></ResultSummary></TestRun>";
+        var good = JsonSerializer.Serialize(new { token, success = true, sourceCommit = commit, archiveSha256 = hash, sdkVersion = SdkVersion, osVersion = "14.6.1", architecture = "x86_64", expectedTests = 577, total = 577, executed = 577, passed = 577, failed = 0, notExecuted = 0, nativeTests = NativeFacts, nativeArtifacts = NativeArtifacts.Select(name => new { name, sha256 = hash, architecture = "x86_64" }), audioCodeSignExit = 0, trxSha256 = Hash(Encoding.UTF8.GetBytes(trx)) });
+        ValidateFullResult(good, token, commit, hash); ValidateTrx(Encoding.UTF8.GetBytes(trx), good);
+        byte[] bomTrx = [0xef, 0xbb, 0xbf, .. Encoding.UTF8.GetBytes(trx)];
+        ValidateTrx(bomTrx, good.Replace(Hash(Encoding.UTF8.GetBytes(trx)), Hash(bomTrx), StringComparison.Ordinal));
+        var qualifiedTrx = trx;
+        foreach (var name in NativeFacts) qualifiedTrx = qualifiedTrx.Replace("name='" + name[(name.LastIndexOf('.') + 1)..] + "'", "name='" + name + "'", StringComparison.Ordinal);
+        ValidateTrx(Encoding.UTF8.GetBytes(qualifiedTrx), good.Replace(Hash(Encoding.UTF8.GetBytes(trx)), Hash(Encoding.UTF8.GetBytes(qualifiedTrx)), StringComparison.Ordinal));
+        foreach (var invalid in new[] { good.Replace("\"success\":true", "\"success\":false"), good.Replace("\"passed\":577", "\"passed\":572"), good.Replace("\"notExecuted\":0", "\"notExecuted\":5"), good.Replace("\"audioCodeSignExit\":0", "\"audioCodeSignExit\":1"), good.Replace("x86_64", "arm64"), good.Replace(token, new string('d', 32)), good.Replace(commit, new string('e', 40)), good.Replace("NativeHelperAdvertisesCalendarPromptAndScreenshotFeatures", "UnrelatedTest") })
+        {
+            try { ValidateFullResult(invalid, token, commit, hash); } catch (InvalidOperationException) { continue; }
+            throw new InvalidOperationException("Full native validator accepted an incomplete or stale proof.");
+        }
+        try { ValidateTrx(Encoding.UTF8.GetBytes(trx.Replace("outcome='Passed'", "outcome='NotExecuted'")), good); } catch (InvalidOperationException) { return; }
+        throw new InvalidOperationException("Full native validator accepted changed TRX bytes.");
+    }
+
+    static async Task ValidateCompression(string chunk, string output)
+    {
+        Directory.CreateDirectory(output);
+        var bytes = File.ReadAllBytes(chunk);
+        if (Hash(bytes) != "2770f06fe51f19ddc040cfad4ab870d7227f540d1ba4190a9ce631145c12fae0") throw new InvalidOperationException("Readonly retained Recovery qualification chunk hash mismatch.");
+        var text = Encoding.Latin1.GetString(bytes);
+        if (text.Split(DiagnosticDaemon, StringSplitOptions.None).Length != 2 || text.Split(MountOnlyBootstrap, StringSplitOptions.None).Length != 2) throw new InvalidOperationException("Qualification chunk does not contain this exact Recovery LaunchDaemon and mount-only patch.");
+        // Upstream UDIF recompression uses Python zlib; .NET's compressor differs even on baseline.
+        await Command("python3", ["-c", "import json,pathlib,sys,zlib; b=pathlib.Path(sys.argv[1]).read_bytes(); n=len(zlib.compress(b,9)); print(json.dumps({'runtime':zlib.ZLIB_RUNTIME_VERSION,'compressedBytes':n,'slotBytes':43266,'fits':n<=43266})); sys.exit(0 if n<=43266 else 1)", chunk], output, "readonly-recovery-compression", CancellationToken.None);
+    }
+
+    static async Task ValidateDiskSerialParser(string output)
+    {
+        Directory.CreateDirectory(output);
+        var guard = File.ReadAllText("tools/ci/macos-native-disk-guard.sh");
+        const string start = "-v disk=\"${disk#/dev/}\" '\n";
+        const string end = "  ' \"$state/disk-ownership-ioreg.log\")";
+        var program = guard[(guard.IndexOf(start, StringComparison.Ordinal) + start.Length)..guard.IndexOf(end, StringComparison.Ordinal)];
+        var serial = new string('0', 20);
+        var own = "+-o QEMU HARDDISK <class IOAHCIBlockStorageDevice>\n  | \"Device Characteristics\" = {\"Serial Number\"=\"" + serial + "\"}\n  +-o Media <class IOMedia>\n      \"BSD Name\" = \"disk1\"\n";
+        var reversed = "+-o QEMU HARDDISK <class IOAHCIBlockStorageDevice>\n  +-o Media <class IOMedia>\n      \"BSD Name\" = \"disk1\"\n  | \"Device Characteristics\" = {\"Serial Number\"=\"" + serial + "\"}\n";
+        var splitRoots = "+-o QEMU HARDDISK <class IOAHCIBlockStorageDevice>\n  | \"Device Characteristics\" = {\"Serial Number\"=\"" + serial + "\"}\n+-o Other <class IOAHCIBlockStorageDevice>\n  +-o Media <class IOMedia>\n      \"BSD Name\" = \"disk1\"\n";
+        foreach (var test in new[] { ("own", own, "1"), ("reversed-properties", reversed, "1"), ("split-roots", splitRoots, "0"), ("foreign-serial", own.Replace(serial, new string('a', 20)), "0"), ("foreign-disk", own.Replace("disk1", "disk2"), "0"), ("ambiguous", own + own, "2") })
+        {
+            var path = Path.Combine(output, "ioreg-" + test.Item1 + ".fixture");
+            File.WriteAllText(path, test.Item2);
+            var result = await Command("awk", ["-v", "expected=" + serial, "-v", "disk=disk1", program, path], output, "disk-serial-" + test.Item1, CancellationToken.None);
+            if (result.Output.Trim() != test.Item3) throw new InvalidOperationException("Actual boot-seam IORegistry parser fixture failed: " + test.Item1);
+        }
+    }
     static string ReplaceAllExact(string text, string oldValue, string newValue, int expected)
     {
         var count = text.Split(oldValue, StringSplitOptions.None).Length - 1;
@@ -227,14 +529,27 @@ static class NativeDiagnostic
             throw new InvalidOperationException("Created container exceeds the owned/unprivileged diagnostic boundary.");
     }
 
-    static async Task CaptureGuest(string id, string output, CancellationToken cancellation)
+    static async Task CaptureGuest(string id, string output, CancellationToken cancellation, bool full = false, bool final = false)
     {
         var logs = await Command("docker", ["logs", "--tail", "3000", id], output, "container", cancellation, requireSuccess: false);
-        foreach (var file in new[] { ("proof.log", "guest-proof.log"), ("result.json", "guest-result.json") })
+        var files = new List<(string, string)> { ("proof.log", "guest-proof.log"), ("result.json", "guest-result.json") };
+        if (full) files.AddRange([("guest-phase.json", "guest-phase.json"), ("full-result.json", "full-result.json"), ("firstboot.log", "firstboot.log"), ("install.log", "install.log"), ("apple.log", "apple.log"), ("disk-ownership-ioreg.log", "disk-ownership-ioreg.log"), ("installed-root.plist", "installed-root.plist"), ("clt-catalog.log", "clt-catalog.log"), ("clt-install.log", "clt-install.log")]);
+        foreach (var file in files)
         {
-            var result = await Command("docker", ["exec", id, "cat", "/dev/shm/installstate/" + file.Item1], output, "capture-" + file.Item1, cancellation, requireSuccess: false);
+            var result = await Command("docker", ["exec", id, "cat", (full ? FullState : "/dev/shm/installstate") + "/" + file.Item1], output, "capture-" + file.Item1.Replace('/', '-'), cancellation, requireSuccess: false);
             if (result.ExitCode == 0 && !string.IsNullOrWhiteSpace(result.Output)) File.WriteAllText(Path.Combine(output, file.Item2), result.Output);
         }
+        if (full)
+        {
+            // Copy only this owned guest's diagnostic logs; no host paths or credentials.
+            var trx = await Command("docker", ["cp", id + ":" + FullState + "/test-results/native.trx", Path.Combine(output, "native.trx.tmp")], output, "capture-native-trx", cancellation, requireSuccess: false);
+            if (trx.ExitCode == 0) File.Move(Path.Combine(output, "native.trx.tmp"), Path.Combine(output, "native.trx"), overwrite: true);
+            if (final || File.Exists(Path.Combine(output, "full-result.json")))
+            {
+                Directory.CreateDirectory(Path.Combine(output, "guest-logs"));
+                await Command("docker", ["cp", id + ":" + FullState + "/guest-logs/.", Path.Combine(output, "guest-logs")], output, "capture-guest-logs", cancellation, requireSuccess: false);
+            }
+        }
         await Command("docker", ["exec", id, "sh", "-c", "printf '[qemu]\n'; qemu-system-x86_64 --version | head -n 1; printf '[Recovery hash]\n'; test ! -f /storage/14/setup.dmg || sha256sum /storage/14/setup.dmg; printf '[resources]\n'; df -Pk /storage; cat /sys/fs/cgroup/memory.max /sys/fs/cgroup/cpu.max 2>/dev/null || true"], output, "guest-container-resources", cancellation, requireSuccess: false);
     }
 
@@ -335,6 +650,18 @@ static class NativeDiagnostic
         Console.WriteLine("[native-diagnostic] Final native guest proof:");
         Console.Write(proof);
     }
+    static void PrintFullProof(string output, string token)
+    {
+        foreach (var name in new[] { "full-result.json", "firstboot.log", "guest-logs/build.stdout.log", "guest-logs/build.stderr.log", "guest-logs/test.stdout.log", "guest-logs/test.stderr.log" })
+        {
+            var path = Path.Combine(output, name);
+            if (!File.Exists(path)) continue;
+            var proof = File.ReadAllText(path).Replace(token, "<run-id>", StringComparison.Ordinal);
+            if (proof.Length > 64 * 1024) proof = "[earlier output retained in artifact]\n" + proof[^(64 * 1024)..];
+            Console.WriteLine("[native-diagnostic] Final native evidence: " + name);
+            Console.WriteLine(proof);
+        }
+    }
     static void Save(string path, object value)
     {
         var temporary = path + ".tmp";

tools/ci/MacOsNativeGuest.cs

@@ -0,0 +1,535 @@
+#:property PublishAot=false
+using System.Diagnostics;
+using System.Formats.Tar;
+using System.Runtime.InteropServices;
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.Json;
+using System.Text.RegularExpressions;
+using System.Xml;
+using System.Xml.Linq;
+
+// Installed-guest CI slice. --validate never invokes macOS, dotnet build/test, or a VM.
+return await NativeGuest.Execute(args);
+
+static class NativeGuest
+{
+    const string SdkVersion = "10.0.401";
+    const string SdkSha512 = "33401b4a2da8554e3306db6072ea8569d9fcc608509c271e0aa4b39e7cc432da3631f14e7e1e2445d67d72550d18ce44a8bbd2382a756867ad2edab6b1c963c0";
+    const int ExpectedTests = 577;
+    const int MaximumLogBytes = 8 * 1024 * 1024;
+    static readonly JsonSerializerOptions JsonOptions = new() { PropertyNamingPolicy = JsonNamingPolicy.CamelCase, WriteIndented = true };
+    static readonly string[] RequiredNativeTests =
+    [
+        "MeetingAssistant.Tests.MacOsMeetingAudioSourceTests.NativeAudioCaptureIsPackagedAsSignedMacOsAppForPersistentPrivacyGrant",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.MacOsCapabilityEndpointReportsEnabledRealProviders",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.NativeHelperAdvertisesCalendarPromptAndScreenshotFeatures",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.NativeHelperCropsPngUsingOcrPixelCoordinates",
+        "MeetingAssistant.Tests.MacOsMeetingIntegrationTests.CalendarClientFallsBackToCalendarAutomationWhenEventKitIsDenied"
+    ];
+    static readonly string[] NativeNames =
+    [
+        "MeetingAssistantAudioCapture.app/Contents/MacOS/macos-meeting-audio-capture",
+        "macos-desktop-controls", "macos-meeting-integrations", "macos-meeting-assistant-launcher"
+    ];
+
+    public static async Task<int> Execute(string[] args)
+    {
+        if (args.Length == 0 || args.SequenceEqual(["--help"]))
+        {
+            Console.WriteLine("dotnet run --file tools/ci/MacOsNativeGuest.cs -- --validate [--archive <source.tar> --source-commit <SHA>] | --run --state /Volumes/installstate --work /private/var/tmp/meeting-assistant-native-<runToken>");
+            return 0;
+        }
+        try
+        {
+            if (args.SequenceEqual(["--validate"]) || args.Length == 5 && args[0] == "--validate" && args[1] == "--archive" && args[3] == "--source-commit")
+            {
+                ValidateContracts();
+                if (args.Length == 5)
+                {
+                    if (!Hex(args[4], 40)) throw new ArgumentException("Source commit must be the full lowercase Git SHA.");
+                    using var archive = File.OpenRead(Path.GetFullPath(args[2]));
+                    ValidateArchive(archive, args[4]);
+                }
+                Console.WriteLine("Guest payload, safe Git tar, fresh TRX and native receipt contracts passed; no native execution occurred.");
+                return 0;
+            }
+            if (args.Length != 5 || args[0] != "--run" || args[1] != "--state" || args[3] != "--work")
+                throw new ArgumentException("Choose --validate or --run --state <mounted9pdir> --work <ownedAPFSdir>.");
+            return await Run(Path.GetFullPath(args[2]), Path.GetFullPath(args[4]));
+        }
+        catch (Exception exception)
+        {
+            Console.Error.WriteLine(exception.Message);
+            return 1;
+        }
+    }
+
+    static async Task<int> Run(string state, string work)
+    {
+        if (!OperatingSystem.IsMacOS() || RuntimeInformation.ProcessArchitecture != Architecture.X64)
+            throw new InvalidOperationException("--run is restricted to the installed macOS x86_64 guest.");
+        RequireNoLinks(state);
+        RequireNoLinks(work);
+        var manifestPath = Path.Combine(state, "payload.json");
+        RequireNoLinks(manifestPath);
+        var payload = ReadPayload(File.ReadAllText(manifestPath));
+        if (work != "/private/var/tmp/meeting-assistant-native-" + payload.RunToken || !Directory.Exists(work))
+            throw new InvalidOperationException("Guest work directory does not match this run's owned APFS location.");
+        var owner = Path.Combine(work, "run.owner");
+        RequireNoLinks(owner);
+        if (File.ReadAllText(owner).TrimEnd('\r', '\n') != payload.RunToken)
+            throw new InvalidOperationException("Guest work directory has a different run owner.");
+
+        var started = DateTimeOffset.UtcNow;
+        var summary = new TestSummary(0, 0, 0, 0, 0, []);
+        var native = new List<NativeArtifact>();
+        var osVersion = "";
+        var architecture = "";
+        var actualSdk = "";
+        var trxSha256 = "";
+        var audioCodeSignExit = -1;
+        var success = false;
+        var reason = "";
+        var logs = Path.Combine(state, "guest-logs");
+        var results = Path.Combine(state, "test-results");
+        var source = Path.Combine(work, "source");
+        var dotnet = Path.Combine(work, "dotnet", "dotnet");
+        // Guest checks/restore/build/tests: 25 minutes within the host's 172-minute total.
+        using var deadline = new CancellationTokenSource(TimeSpan.FromMinutes(25));
+        using var signal = PosixSignalRegistration.Create(PosixSignal.SIGTERM, context => { context.Cancel = true; deadline.Cancel(); });
+        ConsoleCancelEventHandler cancelHandler = (_, context) => { context.Cancel = true; deadline.Cancel(); };
+        Console.CancelKeyPress += cancelHandler;
+        void Phase(string phase, string stage) => Save(Path.Combine(state, "guest-phase.json"), new { token = payload.RunToken, phase, stage, updatedUtc = DateTimeOffset.UtcNow });
+        async Task<CommandResult> Cmd(string executable, string[] arguments, string label, bool requireSuccess = true) =>
+            await Command(executable, arguments, source, work, logs, label, deadline.Token, requireSuccess);
+        try
+        {
+            RequireAbsent(Path.Combine(state, "full-result.json"));
+            RequireAbsent(logs);
+            RequireAbsent(results);
+            RequireAbsent(source);
+            Directory.CreateDirectory(logs);
+            Directory.CreateDirectory(results);
+            foreach (var directory in new[] { "home", "packages", "tmp" })
+            {
+                RequireNoLinks(Path.Combine(work, directory));
+                Directory.CreateDirectory(Path.Combine(work, directory));
+            }
+            Phase("tests-running", "installed-guest-checks");
+            osVersion = (await Cmd("/usr/bin/sw_vers", ["-productVersion"], "os-version")).Output.Trim();
+            architecture = (await Cmd("/usr/bin/uname", ["-m"], "architecture")).Output.Trim();
+            var uid = (await Cmd("/usr/bin/id", ["-u"], "uid")).Output.Trim();
+            RequirePlatform(osVersion, architecture, uid);
+            foreach (var volume in new[] { ("/", "system-volume"), (work, "work-volume") })
+                RequireApfs((await Cmd("/usr/sbin/diskutil", ["info", "-plist", volume.Item1], volume.Item2)).Output);
+            await Cmd("/usr/bin/xcode-select", ["-p"], "clt-location");
+            await Cmd("/usr/sbin/pkgutil", ["--pkg-info", "com.apple.pkg.CLTools_Executables"], "clt-package");
+            await Cmd("/usr/bin/xcrun", ["swiftc", "--version"], "swift-version");
+            RequireNoLinks(dotnet);
+            actualSdk = (await Cmd(dotnet, ["--version"], "sdk-version")).Output.Trim();
+            var sdkInfo = (await Cmd(dotnet, ["--info"], "sdk-info")).Output;
+            if (actualSdk != SdkVersion || !Regex.IsMatch(sdkInfo, @"(?m)^\s*Architecture:\s*x64\s*$"))
+                throw new InvalidOperationException("Guest .NET SDK is not the pinned 10.0.401/x64 toolchain.");
+
+            Phase("tests-running", "payload-verification");
+            var archive = Path.Combine(state, "source.tar");
+            var sdkArchive = Path.Combine(state, "sdk.tar.gz");
+            RequireNoLinks(archive);
+            RequireNoLinks(sdkArchive);
+            if (await HashFile(archive, false, deadline.Token) != payload.ArchiveSha256 || await HashFile(sdkArchive, true, deadline.Token) != payload.SdkSha512)
+                throw new InvalidOperationException("Guest payload hash does not match the pinned manifest.");
+            using (var stream = File.OpenRead(archive)) ValidateArchive(stream, payload.SourceCommit);
+            // All members were checked before native tar can write anything; the destination is new.
+            Directory.CreateDirectory(source);
+            await Cmd("/usr/bin/tar", ["-xf", archive, "-C", source], "source-extraction");
+            var project = Path.Combine(source, "MeetingAssistant.Tests", "MeetingAssistant.Tests.csproj");
+            if (!File.Exists(project)) throw new InvalidOperationException("Source archive lacks the test project.");
+            var nativeRoot = Path.Combine(source, "MeetingAssistant", "bin", "Release", "net10.0", "Native");
+            RequireAbsent(nativeRoot);
+            Phase("tests-running", "restore");
+            await Cmd(dotnet, ["restore", project, "-p:EnableWindowsTargeting=true", "-p:TargetFramework=net10.0"], "restore");
+            Phase("tests-running", "build");
+            var buildStarted = DateTimeOffset.UtcNow;
+            await Cmd(dotnet, ["build", project, "--no-restore", "-f", "net10.0", "-c", "Release", "-p:EnableWindowsTargeting=true"], "build");
+            Phase("tests-running", "native-artifacts");
+            foreach (var name in NativeNames)
+            {
+                var path = Path.Combine(nativeRoot, name);
+                RequireNoLinks(path);
+                RequireFreshFile(path, buildStarted);
+                var fileOutput = (await Cmd("/usr/bin/file", ["-b", path], "native-file-" + native.Count)).Output;
+                var arch = (await Cmd("/usr/bin/xcrun", ["lipo", "-archs", path], "native-architecture-" + native.Count)).Output.Trim();
+                RequireNativeArtifact(fileOutput, arch);
+                native.Add(new(name, await HashFile(path, false, deadline.Token), arch));
+            }
+            var signing = await Cmd("/usr/bin/codesign", ["--verify", "--deep", "--strict", Path.Combine(nativeRoot, "MeetingAssistantAudioCapture.app")], "audio-code-sign", false);
+            audioCodeSignExit = signing.ExitCode;
+            if (audioCodeSignExit != 0) throw new InvalidOperationException("Fresh audio app did not pass strict code-signature verification.");
+            Phase("tests-running", "test");
+            var testStarted = DateTimeOffset.UtcNow;
+            await Cmd(dotnet, ["test", project, "--no-build", "--no-restore", "-f", "net10.0", "-c", "Release", "-p:EnableWindowsTargeting=true", "--logger", "trx;LogFileName=native.trx", "--results-directory", results], "test");
+            var trxPath = Path.Combine(results, "native.trx");
+            RequireNoLinks(trxPath);
+            RequireFreshFile(trxPath, testStarted, 16 * 1024 * 1024);
+            var trxBytes = File.ReadAllBytes(trxPath);
+            summary = ValidateTrx(trxBytes, payload.ExpectedTests, testStarted);
+            trxSha256 = Convert.ToHexStringLower(SHA256.HashData(trxBytes));
+            success = true;
+        }
+        catch (Exception exception)
+        {
+            reason = exception is OperationCanceledException ? "The explicit 25-minute guest deadline or cancellation was reached." : exception.Message;
+            if (reason.Length > 4096) reason = reason[..4096];
+            Console.Error.WriteLine(reason);
+        }
+        finally
+        {
+            Console.CancelKeyPress -= cancelHandler;
+            var result = new FullResult(payload.RunToken, success, payload.SourceCommit, payload.ArchiveSha256, osVersion, architecture, actualSdk, payload.ExpectedTests, summary.Total, summary.Executed, summary.Passed, summary.Failed, summary.NotExecuted, summary.NativeTests, native.ToArray(), audioCodeSignExit, trxSha256, reason, started, DateTimeOffset.UtcNow);
+            if (success)
+            {
+                try { ValidateResult(result, payload); }
+                catch (InvalidOperationException exception)
+                {
+                    success = false;
+                    result = result with { Success = false, Reason = exception.Message };
+                }
+            }
+            Save(Path.Combine(state, "full-result.json"), result);
+            Phase(success ? "tests-passed" : "tests-failed", "complete");
+        }
+        Console.WriteLine(success ? "Native macOS guest build, signed helpers and all 577 tests passed without skips." : "Native guest validation failed; full-result.json and bounded logs retain the evidence.");
+        return success ? 0 : 1;
+    }
+
+    static Payload ReadPayload(string json)
+    {
+        using var document = JsonDocument.Parse(json);
+        if (document.RootElement.ValueKind != JsonValueKind.Object || document.RootElement.EnumerateObject().Select(property => property.Name).Distinct(StringComparer.Ordinal).Count() != document.RootElement.EnumerateObject().Count())
+            throw new InvalidOperationException("Payload manifest must contain one unambiguous JSON object.");
+        var payload = JsonSerializer.Deserialize<Payload>(json, JsonOptions) ?? throw new InvalidOperationException("Missing guest payload manifest.");
+        if (!Hex(payload.RunToken, 32) || !Hex(payload.SourceCommit, 40) || !Hex(payload.ArchiveSha256, 64) || payload.SdkVersion != SdkVersion || payload.SdkSha512 != SdkSha512 || payload.ExpectedTests != ExpectedTests)
+            throw new InvalidOperationException("Guest payload identity, SDK pin or expected test count is invalid.");
+        return payload;
+    }
+
+    static void ValidateArchive(Stream stream, string commit)
+    {
+        using var reader = new TarReader(stream, leaveOpen: true);
+        var names = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        var commits = new List<string>();
+        long totalBytes = 0;
+        while (reader.GetNextEntry() is { } entry)
+        {
+            if (entry is PaxGlobalExtendedAttributesTarEntry global)
+            {
+                if (global.GlobalExtendedAttributes.TryGetValue("comment", out var value)) commits.Add(value);
+                if (global.GlobalExtendedAttributes.Keys.Any(key => key is "path" or "linkpath"))
+                    throw new InvalidOperationException("Global tar path overrides are not supported.");
+                continue;
+            }
+            if (entry.EntryType is not (TarEntryType.RegularFile or TarEntryType.V7RegularFile or TarEntryType.Directory))
+                throw new InvalidOperationException("Source tar contains a link or unsupported entry type: " + entry.Name);
+            var name = entry.Name.TrimEnd('/');
+            if (name.Length == 0 || name.StartsWith('/') || name.Contains('\\') || name.Contains('\0') || name.Split('/').Any(part => part.Length == 0 || part is "." or ".." or ".git" or "bin" or "obj") || !names.Add(name))
+                throw new InvalidOperationException("Source tar path is unsafe, repeated or contains generated output: " + entry.Name);
+            totalBytes = checked(totalBytes + entry.Length);
+            if (names.Count > 100_000 || totalBytes > 2L * 1024 * 1024 * 1024)
+                throw new InvalidOperationException("Source tar exceeds its explicit entry/size budget.");
+        }
+        if (names.Count == 0 || commits.Count != 1 || commits[0] != commit || !names.Contains("MeetingAssistant.Tests/MeetingAssistant.Tests.csproj"))
+            throw new InvalidOperationException("Source tar does not prove its exact Git commit and test project.");
+    }
+
+    static TestSummary ValidateTrx(string xml, int expected, DateTimeOffset testStarted) => ValidateTrx(Encoding.UTF8.GetBytes(xml), expected, testStarted);
+    static TestSummary ValidateTrx(byte[] xml, int expected, DateTimeOffset testStarted)
+    {
+        var document = ParseXml(xml);
+        var root = document.Root ?? throw new InvalidOperationException("Empty TRX.");
+        XNamespace ns = "http://microsoft.com/schemas/VisualStudio/TeamTest/2010";
+        if (root.Name != ns + "TestRun") throw new InvalidOperationException("Unexpected TRX namespace or root.");
+        var times = root.Element(ns + "Times") ?? throw new InvalidOperationException("TRX lacks execution timestamps.");
+        if (!DateTimeOffset.TryParse((string?)times.Attribute("start"), out var start) || !DateTimeOffset.TryParse((string?)times.Attribute("finish"), out var finish) || start < testStarted.AddSeconds(-2) || finish < start || finish > DateTimeOffset.UtcNow.AddSeconds(30))
+            throw new InvalidOperationException("TRX belongs to a stale or invalid test execution.");
+        var resultSummary = root.Element(ns + "ResultSummary") ?? throw new InvalidOperationException("TRX lacks a final result summary.");
+        if ((string?)resultSummary.Attribute("outcome") != "Completed") throw new InvalidOperationException("TRX test run did not complete.");
+        var counters = resultSummary.Element(ns + "Counters") ?? throw new InvalidOperationException("TRX lacks final counters.");
+        int Count(string name) => int.TryParse((string?)counters.Attribute(name), out var value) && value >= 0 ? value : throw new InvalidOperationException("TRX lacks a valid counter: " + name);
+        var total = Count("total");
+        var executed = Count("executed");
+        var passed = Count("passed");
+        var failed = Count("failed");
+        var notExecuted = Count("notExecuted");
+        foreach (var name in new[] { "error", "timeout", "aborted", "inconclusive", "passedButRunAborted", "notRunnable", "disconnected", "inProgress", "pending" })
+            if (counters.Attribute(name) is not null && Count(name) != 0) throw new InvalidOperationException("TRX contains an incomplete or unsuccessful execution: " + name);
+        if (expected != ExpectedTests || total != expected || executed != expected || passed != expected || failed != 0 || notExecuted != 0)
+            throw new InvalidOperationException($"Native TRX must prove {expected} total/executed/passed tests, zero failures and zero skips; got {total}/{executed}/{passed}/{failed}/{notExecuted}.");
+        var definitions = new Dictionary<string, string>(StringComparer.Ordinal);
+        foreach (var unit in root.Element(ns + "TestDefinitions")?.Elements(ns + "UnitTest") ?? [])
+        {
+            var method = unit.Element(ns + "TestMethod") ?? throw new InvalidOperationException("TRX test definition lacks its method identity.");
+            var className = ((string?)method.Attribute("className") ?? "").Split(',')[0].Trim();
+            var methodName = (string?)method.Attribute("name") ?? "";
+            var id = (string?)unit.Attribute("id") ?? "";
+            if (id.Length == 0 || className.Length == 0 || methodName.Length == 0 || !definitions.TryAdd(id, methodName.StartsWith(className + ".", StringComparison.Ordinal) ? methodName : className + "." + methodName))
+                throw new InvalidOperationException("TRX contains an ambiguous test definition.");
+        }
+        var results = root.Element(ns + "Results")?.Elements(ns + "UnitTestResult").ToArray() ?? [];
+        var executionIds = new HashSet<string>(StringComparer.Ordinal);
+        var native = new List<string>();
+        foreach (var result in results)
+        {
+            var id = (string?)result.Attribute("testId") ?? "";
+            var executionId = (string?)result.Attribute("executionId") ?? "";
+            if ((string?)result.Attribute("outcome") != "Passed" || executionId.Length == 0 || !executionIds.Add(executionId) || !definitions.TryGetValue(id, out var identity))
+                throw new InvalidOperationException("TRX has a missing, duplicate or non-passed execution.");
+            if (RequiredNativeTests.Contains(identity, StringComparer.Ordinal)) native.Add(identity);
+        }
+        if (results.Length != expected || native.Count != RequiredNativeTests.Length || !native.Order().SequenceEqual(RequiredNativeTests.Order()))
+            throw new InvalidOperationException("TRX does not prove every expected execution and the five explicit native macOS tests.");
+        return new(total, executed, passed, failed, notExecuted, native.ToArray());
+    }
+
+    static void ValidateResult(FullResult result, Payload payload)
+    {
+        if (result.Token != payload.RunToken || !result.Success || result.SourceCommit != payload.SourceCommit || result.ArchiveSha256 != payload.ArchiveSha256 || !Version.TryParse(result.OsVersion, out var version) || version.Major < 14 || result.Architecture != "x86_64" || result.SdkVersion != SdkVersion || result.ExpectedTests != ExpectedTests || result.Total != ExpectedTests || result.Executed != ExpectedTests || result.Passed != ExpectedTests || result.Failed != 0 || result.NotExecuted != 0 || !result.NativeTests.Order().SequenceEqual(RequiredNativeTests.Order()) || result.AudioCodeSignExit != 0 || !Hex(result.TrxSha256, 64) || result.NativeArtifacts.Length != NativeNames.Length || !result.NativeArtifacts.Select(artifact => artifact.Name).Order().SequenceEqual(NativeNames.Order()) || result.NativeArtifacts.Any(artifact => artifact.Architecture != "x86_64" || !Hex(artifact.Sha256, 64)) || result.CompletedUtc < result.StartedUtc || result.CompletedUtc - result.StartedUtc > TimeSpan.FromMinutes(25).Add(TimeSpan.FromSeconds(15)) || result.CompletedUtc > DateTimeOffset.UtcNow.AddSeconds(30) || result.CompletedUtc < DateTimeOffset.UtcNow.AddMinutes(-1) || result.Reason.Length != 0)
+            throw new InvalidOperationException("Native guest receipt does not prove this source, toolchain, signed artifacts and all expected tests.");
+    }
+
+    static void RequirePlatform(string version, string architecture, string uid)
+    {
+        if (!Version.TryParse(version, out var parsed) || parsed.Major < 14 || architecture != "x86_64" || uid != "0")
+            throw new InvalidOperationException("Native build requires installed macOS 14+/x86_64 running as root.");
+    }
+    static void RequireApfs(string xml)
+    {
+        var elements = ParseXml(xml).Root?.Element("dict")?.Elements().ToArray() ?? [];
+        var type = elements.Select((element, index) => (element, index)).FirstOrDefault(pair => pair.element.Name == "key" && pair.element.Value == "FilesystemType");
+        if (type.element is null || type.index + 1 >= elements.Length || elements[type.index + 1].Name != "string" || elements[type.index + 1].Value != "apfs")
+            throw new InvalidOperationException("Native build must run from the installed APFS system and owned APFS work volume.");
+    }
+    static void RequireNativeArtifact(string fileOutput, string architecture)
+    {
+        if (!fileOutput.Contains("Mach-O", StringComparison.Ordinal) || !fileOutput.Contains("x86_64", StringComparison.Ordinal) || architecture != "x86_64")
+            throw new InvalidOperationException("Native helper is not a Mach-O executable containing exactly x86_64.");
+    }
+    static void RequireAbsent(string path)
+    {
+        if (Path.Exists(path) || GetAttributesSafe(path)?.HasFlag(FileAttributes.ReparsePoint) == true)
+            throw new InvalidOperationException("Fresh guest execution refuses pre-existing output: " + path);
+    }
+    static void RequireFreshFile(string path, DateTimeOffset started, long maximumBytes = long.MaxValue)
+    {
+        RequireNoLinks(path);
+        var file = new FileInfo(path);
+        if (!file.Exists || file.Length == 0 || file.Length > maximumBytes || file.LastWriteTimeUtc < started.UtcDateTime.AddSeconds(-2))
+            throw new InvalidOperationException("Expected a fresh, nonempty, bounded output from this execution: " + path);
+    }
+    static void RequireNoLinks(string path)
+    {
+        for (var current = Path.GetFullPath(path); current is not null; current = Path.GetDirectoryName(current))
+            if (GetAttributesSafe(current)?.HasFlag(FileAttributes.ReparsePoint) == true)
+                throw new InvalidOperationException("Guest ownership/extraction refuses a symbolic link: " + current);
+    }
+    static FileAttributes? GetAttributesSafe(string path)
+    {
+        try { return File.GetAttributes(path); }
+        catch (FileNotFoundException) { return null; }
+        catch (DirectoryNotFoundException) { return null; }
+    }
+    static XDocument ParseXml(string xml) => ParseXml(Encoding.UTF8.GetBytes(xml));
+    static XDocument ParseXml(byte[] xml)
+    {
+        using var stream = new MemoryStream(xml, writable: false);
+        using var reader = XmlReader.Create(stream, new XmlReaderSettings { DtdProcessing = DtdProcessing.Ignore, XmlResolver = null, MaxCharactersInDocument = 16 * 1024 * 1024 });
+        return XDocument.Load(reader);
+    }
+    static bool Hex(string? value, int length) => value is not null && Regex.IsMatch(value, "^[0-9a-f]{" + length + "}$");
+    static async Task<string> HashFile(string path, bool sha512, CancellationToken cancellation)
+    {
+        using var stream = File.OpenRead(path);
+        var hash = sha512 ? await SHA512.HashDataAsync(stream, cancellation) : await SHA256.HashDataAsync(stream, cancellation);
+        return Convert.ToHexStringLower(hash);
+    }
+    static void Save(string path, object value)
+    {
+        RequireNoLinks(path);
+        var temporary = path + ".tmp";
+        RequireNoLinks(temporary);
+        File.WriteAllText(temporary, JsonSerializer.Serialize(value, JsonOptions), new UTF8Encoding(false));
+        File.Move(temporary, path, overwrite: true);
+    }
+
+    static async Task<CommandResult> Command(string executable, string[] arguments, string source, string work, string logs, string label, CancellationToken cancellation, bool requireSuccess)
+    {
+        Console.WriteLine("[native-guest] " + label);
+        using var commandCancellation = CancellationTokenSource.CreateLinkedTokenSource(cancellation);
+        var token = commandCancellation.Token;
+        var start = new ProcessStartInfo(executable) { WorkingDirectory = Directory.Exists(source) ? source : work, RedirectStandardOutput = true, RedirectStandardError = true, UseShellExecute = false };
+        foreach (var argument in arguments) start.ArgumentList.Add(argument);
+        start.Environment.Clear();
+        foreach (var pair in new Dictionary<string, string>
+        {
+            ["PATH"] = Path.Combine(work, "dotnet") + ":/usr/bin:/bin:/usr/sbin:/sbin",
+            ["TMPDIR"] = Path.Combine(work, "tmp"),
+            ["DOTNET_ROOT"] = Path.Combine(work, "dotnet"), ["DOTNET_CLI_HOME"] = Path.Combine(work, "home"),
+            ["NUGET_PACKAGES"] = Path.Combine(work, "packages"), ["TZ"] = "Europe/Berlin",
+            ["LANG"] = "en_US.UTF-8", ["LC_ALL"] = "en_US.UTF-8", ["DOTNET_CLI_TELEMETRY_OPTOUT"] = "1",
+            ["DOTNET_NOLOGO"] = "1", ["DOTNET_SKIP_FIRST_TIME_EXPERIENCE"] = "1", ["MSBUILDDISABLENODEREUSE"] = "1"
+        }) start.Environment[pair.Key] = pair.Value;
+        using var process = Process.Start(start) ?? throw new InvalidOperationException("Cannot start guest command: " + label);
+        long capturedBytes = 0;
+        async Task<string> Read(StreamReader reader, string stream)
+        {
+            var captured = new StringBuilder();
+            var buffer = new char[8192];
+            using var log = new StreamWriter(Path.Combine(logs, label + "." + stream + ".log"), false, new UTF8Encoding(false));
+            while (true)
+            {
+                var count = await reader.ReadAsync(buffer.AsMemory(), token);
+                if (count == 0) break;
+                if (Interlocked.Add(ref capturedBytes, Encoding.UTF8.GetByteCount(buffer.AsSpan(0, count))) > MaximumLogBytes)
+                {
+                    commandCancellation.Cancel();
+                    throw new InvalidOperationException(label + " exceeded its combined 8-MiB output budget.");
+                }
+                captured.Append(buffer, 0, count);
+                await log.WriteAsync(buffer.AsMemory(0, count), token);
+                await log.FlushAsync(token);
+            }
+            return captured.ToString();
+        }
+        var stdout = Read(process.StandardOutput, "stdout");
+        var stderr = Read(process.StandardError, "stderr");
+        try
+        {
+            await Task.WhenAll(stdout, stderr, process.WaitForExitAsync(token));
+            var result = new CommandResult(process.ExitCode, await stdout, await stderr);
+            if (requireSuccess && result.ExitCode != 0)
+                throw new InvalidOperationException($"{label} exited {result.ExitCode}: {result.Error[..Math.Min(result.Error.Length, 1500)]}");
+            return result;
+        }
+        catch
+        {
+            try { if (!process.HasExited) process.Kill(entireProcessTree: true); } catch (InvalidOperationException) { }
+            using var killDeadline = new CancellationTokenSource(TimeSpan.FromSeconds(5));
+            try { await process.WaitForExitAsync(killDeadline.Token); } catch (OperationCanceledException) { }
+            throw;
+        }
+    }
+
+    static void ValidateContracts()
+    {
+        var payload = new Payload(new string('a', 32), new string('b', 40), new string('c', 64), SdkVersion, SdkSha512, ExpectedTests);
+        var json = JsonSerializer.Serialize(payload, JsonOptions);
+        ReadPayload(json);
+        Reject(() => ReadPayload(json.Replace(SdkVersion, "10.0.100", StringComparison.Ordinal)));
+        Reject(() => ReadPayload(json.Replace(SdkSha512, new string('d', 128), StringComparison.Ordinal)));
+        Reject(() => ReadPayload(json.Replace("577", "572", StringComparison.Ordinal)));
+        Reject(() => ReadPayload(json.Replace(payload.RunToken, "stale", StringComparison.Ordinal)));
+        Reject(() => ReadPayload(json.Replace(payload.ArchiveSha256, "invalid", StringComparison.Ordinal)));
+        RequirePlatform("14.6.1", "x86_64", "0");
+        Reject(() => RequirePlatform("13.6.1", "x86_64", "0"));
+        Reject(() => RequirePlatform("14.6.1", "arm64", "0"));
+        Reject(() => RequirePlatform("14.6.1", "x86_64", "501"));
+        RequireApfs("<plist><dict><key>FilesystemType</key><string>apfs</string></dict></plist>");
+        Reject(() => RequireApfs("<plist><dict><key>FilesystemType</key><string>hfs</string></dict></plist>"));
+        RequireNativeArtifact("Mach-O 64-bit executable x86_64", "x86_64");
+        Reject(() => RequireNativeArtifact("Mach-O universal binary x86_64 arm64", "x86_64 arm64"));
+        Reject(() => RequireNativeArtifact("ELF 64-bit executable x86_64", "x86_64"));
+        using (var archive = FixtureArchive(payload.SourceCommit)) ValidateArchive(archive, payload.SourceCommit);
+        foreach (var path in new[] { "../escape", "/absolute", "safe/../escape", "safe\\escape", "MeetingAssistant/bin/stale" })
+            Reject(() => { using var archive = FixtureArchive(payload.SourceCommit, path); ValidateArchive(archive, payload.SourceCommit); });
+        Reject(() => { using var archive = FixtureArchive(payload.SourceCommit, "link", true); ValidateArchive(archive, payload.SourceCommit); });
+        Reject(() => { using var archive = FixtureArchive(new string('d', 40)); ValidateArchive(archive, payload.SourceCommit); });
+        var started = DateTimeOffset.UtcNow.AddMinutes(-1);
+        var fixture = FixtureTrx(started);
+        var summary = ValidateTrx(fixture.ToString(), ExpectedTests, started);
+        var plainTrx = Encoding.UTF8.GetBytes(fixture.ToString());
+        var bomTrx = new byte[] { 0xef, 0xbb, 0xbf }.Concat(plainTrx).ToArray();
+        ValidateTrx(bomTrx, ExpectedTests, started);
+        if (SHA256.HashData(plainTrx).SequenceEqual(SHA256.HashData(bomTrx))) throw new InvalidOperationException("TRX raw-byte hashing discarded its BOM.");
+        Reject(() => ValidateTrx(fixture.ToString(), ExpectedTests, started.AddMinutes(2)));
+        XNamespace ns = fixture.Root!.Name.Namespace;
+        var skipped = new XDocument(fixture);
+        skipped.Descendants(ns + "UnitTestResult").First().SetAttributeValue("outcome", "NotExecuted");
+        Reject(() => ValidateTrx(skipped.ToString(), ExpectedTests, started));
+        var missingNative = new XDocument(fixture);
+        missingNative.Descendants(ns + "TestMethod").First().SetAttributeValue("name", "ManagedReplacement");
+        Reject(() => ValidateTrx(missingNative.ToString(), ExpectedTests, started));
+        var duplicate = new XDocument(fixture);
+        duplicate.Descendants(ns + "UnitTestResult").Last().SetAttributeValue("executionId", "execution-0");
+        Reject(() => ValidateTrx(duplicate.ToString(), ExpectedTests, started));
+        var counters = new XDocument(fixture);
+        counters.Descendants(ns + "Counters").Single().SetAttributeValue("passed", "572");
+        Reject(() => ValidateTrx(counters.ToString(), ExpectedTests, started));
+        var aborted = new XDocument(fixture);
+        aborted.Descendants(ns + "ResultSummary").Single().SetAttributeValue("outcome", "Aborted");
+        Reject(() => ValidateTrx(aborted.ToString(), ExpectedTests, started));
+        var artifacts = NativeNames.Select(name => new NativeArtifact(name, new string('d', 64), "x86_64")).ToArray();
+        var result = new FullResult(payload.RunToken, true, payload.SourceCommit, payload.ArchiveSha256, "14.6.1", "x86_64", SdkVersion, ExpectedTests, summary.Total, summary.Executed, summary.Passed, summary.Failed, summary.NotExecuted, summary.NativeTests, artifacts, 0, new string('e', 64), "", started, DateTimeOffset.UtcNow);
+        ValidateResult(result, payload);
+        foreach (var invalid in new[] { result with { Token = new string('f', 32) }, result with { Success = false }, result with { SourceCommit = new string('f', 40) }, result with { ArchiveSha256 = new string('f', 64) }, result with { NotExecuted = 5 }, result with { AudioCodeSignExit = 1 }, result with { NativeTests = RequiredNativeTests[..4] }, result with { NativeArtifacts = artifacts[..3] }, result with { NativeArtifacts = [artifacts[0] with { Architecture = "arm64" }, .. artifacts[1..]] }, result with { TrxSha256 = "" }, result with { SdkVersion = "10.0.100" }, result with { OsVersion = "13.6.1" }, result with { StartedUtc = started.AddHours(-1) }, result with { StartedUtc = started.AddHours(-1), CompletedUtc = started.AddHours(-1).AddSeconds(1) } })
+            Reject(() => ValidateResult(invalid, payload));
+        var temporary = Path.Combine(OperatingSystem.IsMacOS() ? "/private/tmp" : Path.GetTempPath(), "meeting-assistant-guest-validation-" + Guid.NewGuid().ToString("N"));
+        try
+        {
+            RequireAbsent(temporary);
+            Directory.CreateDirectory(temporary);
+            Reject(() => RequireAbsent(temporary));
+            var file = Path.Combine(temporary, "fresh.trx");
+            File.WriteAllText(file, "fixture");
+            RequireFreshFile(file, started);
+            Reject(() => RequireFreshFile(file, started, 1));
+            File.SetLastWriteTimeUtc(file, started.UtcDateTime.AddMinutes(-5));
+            Reject(() => RequireFreshFile(file, started));
+            File.Delete(file);
+        }
+        finally { if (Directory.Exists(temporary)) Directory.Delete(temporary, recursive: true); }
+    }
+
+    static MemoryStream FixtureArchive(string commit, string? extra = null, bool link = false)
+    {
+        var stream = new MemoryStream();
+        using (var writer = new TarWriter(stream, TarEntryFormat.Pax, leaveOpen: true))
+        {
+            writer.WriteEntry(new PaxGlobalExtendedAttributesTarEntry(new Dictionary<string, string> { ["comment"] = commit }));
+            writer.WriteEntry(new PaxTarEntry(TarEntryType.RegularFile, "MeetingAssistant.Tests/MeetingAssistant.Tests.csproj") { DataStream = new MemoryStream(Encoding.UTF8.GetBytes("<Project />")) });
+            if (extra is not null)
+            {
+                var entry = new PaxTarEntry(link ? TarEntryType.SymbolicLink : TarEntryType.RegularFile, extra);
+                if (link) entry.LinkName = "../outside";
+                else entry.DataStream = new MemoryStream([1]);
+                writer.WriteEntry(entry);
+            }
+        }
+        stream.Position = 0;
+        return stream;
+    }
+    static XDocument FixtureTrx(DateTimeOffset started)
+    {
+        XNamespace ns = "http://microsoft.com/schemas/VisualStudio/TeamTest/2010";
+        var definitions = new XElement(ns + "TestDefinitions");
+        var results = new XElement(ns + "Results");
+        for (var index = 0; index < ExpectedTests; index++)
+        {
+            var identity = index < RequiredNativeTests.Length ? RequiredNativeTests[index] : "MeetingAssistant.Tests.ManagedTests.Test" + index;
+            var separator = identity.LastIndexOf('.');
+            definitions.Add(new XElement(ns + "UnitTest", new XAttribute("id", "test-" + index), new XElement(ns + "TestMethod", new XAttribute("className", identity[..separator] + ", MeetingAssistant.Tests"), new XAttribute("name", identity[(separator + 1)..]))));
+            results.Add(new XElement(ns + "UnitTestResult", new XAttribute("testId", "test-" + index), new XAttribute("executionId", "execution-" + index), new XAttribute("outcome", "Passed")));
+        }
+        return new XDocument(new XElement(ns + "TestRun", new XElement(ns + "Times", new XAttribute("start", started.ToString("O")), new XAttribute("finish", started.AddSeconds(1).ToString("O"))), definitions, results, new XElement(ns + "ResultSummary", new XAttribute("outcome", "Completed"), new XElement(ns + "Counters", new XAttribute("total", ExpectedTests), new XAttribute("executed", ExpectedTests), new XAttribute("passed", ExpectedTests), new XAttribute("failed", 0), new XAttribute("notExecuted", 0)))));
+    }
+    static void Reject(Action action)
+    {
+        try { action(); }
+        catch (InvalidOperationException) { return; }
+        throw new InvalidOperationException("Contract validation accepted an invalid or stale fixture.");
+    }
+    sealed record Payload(string RunToken, string SourceCommit, string ArchiveSha256, string SdkVersion, string SdkSha512, int ExpectedTests);
+    sealed record NativeArtifact(string Name, string Sha256, string Architecture);
+    sealed record TestSummary(int Total, int Executed, int Passed, int Failed, int NotExecuted, string[] NativeTests);
+    sealed record FullResult(string Token, bool Success, string SourceCommit, string ArchiveSha256, string OsVersion, string Architecture, string SdkVersion, int ExpectedTests, int Total, int Executed, int Passed, int Failed, int NotExecuted, string[] NativeTests, NativeArtifact[] NativeArtifacts, int AudioCodeSignExit, string TrxSha256, string Reason, DateTimeOffset StartedUtc, DateTimeOffset CompletedUtc);
+    sealed record CommandResult(int ExitCode, string Output, string Error);
+}

tools/ci/macos-native-disk-guard.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+# Apple pre-.NET boot seam, sourced in Recovery and on installed first boot.
+# A match requires the exact run-owned emulated serial, one whole writable 64-GiB disk.
+verify_owned_disk() {
+  local disk="$1" state="$2" token="$3" info serial matches bytes
+  [[ "$disk" =~ ^/dev/disk[0-9]+$ && "$token" =~ ^[0-9a-f]{32}$ ]] || return 1
+  [ "$(cat "$state/run.owner" 2>/dev/null)" = "$token" ] || return 1
+  serial="${token:0:20}"
+  /usr/sbin/diskutil list physical > "$state/disk-list-current.log" 2>&1 || return 1
+  /usr/bin/grep -Eq "^$disk[[:space:]].*physical" "$state/disk-list-current.log" || return 1
+  /usr/sbin/diskutil info "$disk" > "$state/disk-info-current.log" 2>&1 || return 1
+  info=$(cat "$state/disk-info-current.log")
+  printf '%s\n' "$info" | /usr/bin/grep -Eq '^[[:space:]]*Whole:[[:space:]]*Yes' || return 1
+  printf '%s\n' "$info" | /usr/bin/grep -Eq '^[[:space:]]*(Read-Only (Media|Device)|(Media|Device) Read-Only):[[:space:]]*Yes' && return 1
+  printf '%s\n' "$info" | /usr/bin/grep -Eq '^[[:space:]]*(Read-Only (Media|Device)|(Media|Device) Read-Only):[[:space:]]*No' || return 1
+  bytes=$(printf '%s\n' "$info" | /usr/bin/sed -nE 's/^[[:space:]]*Disk Size:.*\(([0-9]+) Bytes\).*/\1/p')
+  [ "$bytes" = 68719476736 ] || return 1
+  /usr/sbin/ioreg -r -c IOBlockStorageDevice -l -w 0 > "$state/disk-ownership-ioreg.log" 2>&1 || return 1
+  matches=$(/usr/bin/awk -v expected="$serial" -v disk="${disk#/dev/}" '
+    function finish_root() { if (serialCount == 1 && serial == expected && ownedDisk) found++ }
+    /^\+-o/ { finish_root(); serial=""; serialCount=0; ownedDisk=0 }
+    /"Serial Number"[[:space:]]*=[[:space:]]*"/ {
+      serialCount++; serial=$0; sub(/^.*"Serial Number"[[:space:]]*=[[:space:]]*"/, "", serial); sub(/".*$/, "", serial); sub(/[[:space:]]+$/, "", serial)
+    }
+    /"BSD Name"[[:space:]]*=[[:space:]]*"/ {
+      name=$0; sub(/^.*"BSD Name"[[:space:]]*=[[:space:]]*"/, "", name); sub(/".*$/, "", name)
+      if (name == disk) ownedDisk=1
+    }
+    END { finish_root(); print found+0 }
+  ' "$state/disk-ownership-ioreg.log")
+  [ "$matches" = 1 ] || return 1
+  printf '[owned-disk] %s serial=%s bytes=%s\n' "$disk" "$serial" "$bytes"
+}

tools/ci/macos-native-firstboot.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+# Apple LaunchDaemon bootstrap before the guest .NET SDK exists.
+# Runs only inside the isolated owned VM; installs CLT and expands the pinned SDK.
+set -u
+PATH="/usr/bin:/bin:/usr/sbin:/sbin"
+export PATH
+PROOF_TOKEN="${1:-}"
+STATE_DIR="/Volumes/installstate"
+WORK="/private/var/tmp/meeting-assistant-native-$PROOF_TOKEN"
+[[ "$PROOF_TOKEN" =~ ^[0-9a-f]{32}$ ]] || exit 1
+[ "$(cat "$STATE_DIR/run.owner" 2>/dev/null)" = "$PROOF_TOKEN" ] || exit 1
+exec >> "$STATE_DIR/firstboot.log" 2>&1
+
+phase() {
+  printf '{"token":"%s","phase":"%s","updatedUtc":"%s"}\n' "$PROOF_TOKEN" "$1" "$(date -u +%Y-%m-%dT%H:%M:%SZ)" > "$STATE_DIR/guest-phase.json.tmp"
+  mv -f "$STATE_DIR/guest-phase.json.tmp" "$STATE_DIR/guest-phase.json"
+}
+fail() { printf '[firstboot] ERROR: %s\n' "$1"; phase bootstrap-failed; exit 1; }
+phase toolchain-installing
+echo '[firstboot] verifying installed OS, APFS and owned physical store'
+sw_vers; uname -a; id
+[ "$(id -u)" = 0 ] && [ "$(uname -m)" = x86_64 ] || fail wrong_guest_platform
+/usr/sbin/diskutil info -plist / > "$STATE_DIR/installed-root.plist" || fail root_diskutil_failed
+[ "$(/usr/libexec/PlistBuddy -c 'Print :FilesystemType' "$STATE_DIR/installed-root.plist")" = apfs ] || fail root_is_not_installed_apfs
+container=$(/usr/libexec/PlistBuddy -c 'Print :APFSContainerReference' "$STATE_DIR/installed-root.plist") || fail root_container_missing
+/usr/sbin/diskutil apfs list -plist > "$STATE_DIR/apfs-containers.plist" || fail apfs_list_failed
+index=0
+physical=""
+while reference=$(/usr/libexec/PlistBuddy -c "Print :Containers:$index:ContainerReference" "$STATE_DIR/apfs-containers.plist" 2>/dev/null); do
+  if [ "$reference" = "$container" ]; then
+    [ -z "$physical" ] || fail ambiguous_root_containers
+    physical=$(/usr/libexec/PlistBuddy -c "Print :Containers:$index:PhysicalStores:0:DeviceIdentifier" "$STATE_DIR/apfs-containers.plist") || fail physical_store_missing
+    /usr/libexec/PlistBuddy -c "Print :Containers:$index:PhysicalStores:1" "$STATE_DIR/apfs-containers.plist" >/dev/null 2>&1 && fail multiple_physical_stores
+  fi
+  index=$((index + 1))
+done
+[[ "$physical" =~ ^disk[0-9]+s[0-9]+$ ]] || fail invalid_physical_store
+/usr/sbin/diskutil info -plist "/dev/$physical" > "$STATE_DIR/physical-store.plist" || fail physical_store_info_failed
+whole=$(/usr/libexec/PlistBuddy -c 'Print :ParentWholeDisk' "$STATE_DIR/physical-store.plist") || fail physical_parent_missing
+. "$STATE_DIR/macos-native-disk-guard.sh"
+verify_owned_disk "/dev/$whole" "$STATE_DIR" "$PROOF_TOKEN" || fail installed_root_is_not_the_owned_64g_disk
+
+# The phase has an independent 30-minute watchdog; host outer deadline is 180 minutes.
+parent=$$
+(
+  trap 'kill "$sleeper" 2>/dev/null || :; exit 0' TERM INT
+  # Toolchain watchdog: 30 minutes, also bounded by the host's 172-minute total.
+  sleep 1800 & sleeper=$!; wait "$sleeper"; kill -TERM "$parent" 2>/dev/null || :
+) & watchdog=$!
+clt_marker="/tmp/.com.apple.dt.CommandLineTools.installondemand.in-progress"
+trap 'rm -f "$clt_marker"; kill -TERM "$watchdog" 2>/dev/null || :; wait "$watchdog" 2>/dev/null || :' EXIT
+trap 'fail toolchain_deadline_or_cancellation' TERM INT
+[ ! -e "$WORK" ] || fail guest_work_directory_already_exists
+mkdir -p "$WORK" || fail guest_work_directory_failed
+printf '%s\n' "$PROOF_TOKEN" > "$WORK/run.owner" || fail guest_work_owner_failed
+free_kib=$(df -Pk "$WORK" | awk 'NR==2 {print $4}')
+[[ "$free_kib" =~ ^[0-9]+$ ]] && (( free_kib >= 8 * 1024 * 1024 )) || fail insufficient_existing_guest_free_space
+
+echo '[firstboot] installing a compatible Apple CLT catalog entry without a GUI'
+touch "$clt_marker" || fail clt_marker_failed
+/usr/sbin/softwareupdate -l > "$STATE_DIR/clt-catalog.log" 2>&1 || fail clt_catalog_failed
+label=$(grep -B 1 -E 'Command Line Tools' "$STATE_DIR/clt-catalog.log" | awk -F'*' '/^ *\*/ {print $2}' | sed -e 's/^ *Label: //' -e 's/^ *//' | sort -V | tail -n 1)
+[ -n "$label" ] || fail no_compatible_headless_clt_label
+printf '[firstboot] selected CLT: %s\n' "$label"
+/usr/sbin/softwareupdate -i "$label" > "$STATE_DIR/clt-install.log" 2>&1 || fail clt_install_failed
+/usr/bin/xcode-select --switch /Library/Developer/CommandLineTools || fail clt_switch_failed
+/usr/sbin/pkgutil --pkg-info=com.apple.pkg.CLTools_Executables || fail clt_receipt_failed
+/usr/bin/xcrun --find swiftc || fail swiftc_missing
+/usr/bin/xcrun swiftc --version || fail swiftc_version_failed
+printf 'import AppKit\nimport AVFoundation\nimport ScreenCaptureKit\nimport EventKit\nimport WebKit\nprint("native SDK ready")\n' > "$WORK/toolchain-smoke.swift"
+/usr/bin/xcrun swiftc -target x86_64-apple-macos13.0 "$WORK/toolchain-smoke.swift" -o "$WORK/toolchain-smoke" || fail native_framework_compile_failed
+"$WORK/toolchain-smoke" || fail native_framework_execution_failed
+rm -f "$clt_marker"
+
+echo '[firstboot] validating and expanding the pinned .NET SDK on owned APFS'
+expected_sdk=33401b4a2da8554e3306db6072ea8569d9fcc608509c271e0aa4b39e7cc432da3631f14e7e1e2445d67d72550d18ce44a8bbd2382a756867ad2edab6b1c963c0
+actual_sdk=$(shasum -a 512 "$STATE_DIR/sdk.tar.gz" | awk '{print $1}')
+[ "$actual_sdk" = "$expected_sdk" ] || fail sdk_hash_mismatch
+mkdir "$WORK/dotnet" || fail sdk_directory_failed
+tar -xzf "$STATE_DIR/sdk.tar.gz" -C "$WORK/dotnet" || fail sdk_extract_failed
+[ "$("$WORK/dotnet/dotnet" --version)" = 10.0.401 ] || fail sdk_version_mismatch
+# Guest C# owns build/test deadlines from this point; stop the CLT-only watchdog.
+kill -TERM "$watchdog" 2>/dev/null || :
+wait "$watchdog" 2>/dev/null || :
+trap - TERM INT
+"$WORK/dotnet/dotnet" run --file "$STATE_DIR/MacOsNativeGuest.cs" -- --run --state "$STATE_DIR" --work "$WORK"
+result=$?
+(( result == 0 )) || fail native_tests_failed
+exit 0