Capture the immutable Recovery hash once after staging

docs/macos-native-diagnostic.md

@@ -1,5 +1,7 @@
 # macOS 13 KVM/Cryptex/NoAVX diagnostic and prepared Full flow
 
+Full RAW run 4219 at `d1594e90b3fa9c6f3bb52f12b754ae933105b8c8` verified RAW sector equality, targeted file-cache eviction, KVM, macOS 13.6/x86_64/root and successful cleanup, but all eight disk-list attempts timed out. Installation and application tests were not reached. The next host-only repair retains the completed Recovery hash once after the existing staging marker; it avoids rereading the immutable 711-MB DMG at every poll. Failed or missing-image captures are not retained as success and can retry. Guest code, assets, CPU, memory and deadlines are unchanged. This repair does not yet prove native readiness or CI success.
+
 In readiness mode, this separate manual candidate probes Recovery readiness on the existing Ubuntu Docker daemon with KVM, the real Intel host CPU and macOS 13. It does not install macOS, erase a disk, install .NET or Apple CLT, or run Meeting Assistant. Passing proves only a fresh macOS 13+ x86_64 Recovery guest with root identity, a working launchd system domain, DiskArbitration and exactly one writable 64-GiB guest disk.
 
 Baseline: bootstrap commit `4606de069678e8f95dfe3c7dad1bf5ce5384d30c`; separate branch `codex/macos-ci-kvm-compatibility`. KVM, CPU passthrough, Recovery major version and guest Cryptex staging change together. This is a compatibility experiment, not a causal single-variable A/B test. The TCG/bootstrap experiment remains separate.

tools/ci/MacOsNativeDiagnostic.cs

@@ -83,7 +83,7 @@ static class NativeDiagnostic
                 ValidateNoAvxRejections(output);
                 await ValidateResourceRetention(output);
                 await ValidateRecoveryPatch(output);
-                Save(Path.Combine(output, "validation.json"), new { success = true, profile = "kvm-host-ventura-cryptex-noavx", mode = full ? "full" : "readiness", recoveryFormat, causalSingleVariableTest = recoveryFormat == "raw", comparisonBaselineCommit = "5f686c5c80b6bbb525745de173b57c6393f58bf0", helperSha256 = Hash(File.ReadAllBytes(Path.Combine("tools", "ci", "MacOsNativeDiagnostic.cs"))), udifChecksumBindingSha256 = Hash(File.ReadAllBytes(Path.Combine("tools", "ci", "macos-native-udif-checksums.py"))), baselineReadinessNormalized = true, resultNegativeCases = 6, containerNegativeCases = 11, recoveryPositiveCases = 4, recoveryNegativeCases = 12, independentFixtureCrc32Readback = true, resourceSnapshotRetention = true, cryptexArchiveVerified = true, noAvxArchiveVerified = true, configurationAndStagingContractsVerified = true, templateIsoDownloaded = false, activeLiluRuntimeChecked = false, sourceModified = false, dockerExecuted = false, guestExecuted = false, completedUtc = DateTimeOffset.UtcNow });
+                Save(Path.Combine(output, "validation.json"), new { success = true, profile = "kvm-host-ventura-cryptex-noavx", mode = full ? "full" : "readiness", recoveryFormat, causalSingleVariableTest = false, comparisonBaselineCommit = "d1594e90b3fa9c6f3bb52f12b754ae933105b8c8", helperSha256 = Hash(File.ReadAllBytes(Path.Combine("tools", "ci", "MacOsNativeDiagnostic.cs"))), udifChecksumBindingSha256 = Hash(File.ReadAllBytes(Path.Combine("tools", "ci", "macos-native-udif-checksums.py"))), baselineReadinessNormalized = true, resultNegativeCases = 6, containerNegativeCases = 11, recoveryPositiveCases = 4, recoveryNegativeCases = 12, independentFixtureCrc32Readback = true, resourceSnapshotRetention = true, cryptexArchiveVerified = true, noAvxArchiveVerified = true, configurationAndStagingContractsVerified = true, templateIsoDownloaded = false, activeLiluRuntimeChecked = false, sourceModified = false, dockerExecuted = false, guestExecuted = false, completedUtc = DateTimeOffset.UtcNow });
             }
             if (full) await ValidateDiskSerialParser(output);
             if (Option(args, "--compression-chunk") is { } chunk)
@@ -117,7 +117,7 @@ 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, profile = "kvm-host-ventura-cryptex-noavx", recoveryFormat, causalSingleVariableTest = recoveryFormat == "raw", comparisonBaselineCommit = "5f686c5c80b6bbb525745de173b57c6393f58bf0", changedGuestVariable = recoveryFormat == "raw" ? "recovery-disk-backend" : "none", kvm = true, cpuModel = "host", recoveryMajor = 13, cryptexVersion = "1.0.5", liluVersion = "1.7.1", noAvxBaseVersion = "12.6", noAvxSha256 = NoAvxHash, runId = Environment.GetEnvironmentVariable("GITHUB_RUN_ID"), server = Environment.GetEnvironmentVariable("GITHUB_SERVER_URL"), architecture = RuntimeInformation.ProcessArchitecture.ToString(), deadlineMinutes, mode = full ? "full" : "readiness" });
+            Save(Path.Combine(output, "run-metadata.json"), new { token, startedUtc = DateTimeOffset.UtcNow, sourceCommit, dockurCommit = DockurCommit, profile = "kvm-host-ventura-cryptex-noavx", recoveryFormat, causalSingleVariableTest = false, comparisonBaselineCommit = "d1594e90b3fa9c6f3bb52f12b754ae933105b8c8", changedGuestVariable = recoveryFormat == "raw" ? "none" : "recovery-disk-backend", changedHostVariable = "recovery-hash-capture-frequency", kvm = true, cpuModel = "host", recoveryMajor = 13, cryptexVersion = "1.0.5", liluVersion = "1.7.1", noAvxBaseVersion = "12.6", noAvxSha256 = NoAvxHash, 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))
             {
@@ -1274,7 +1274,11 @@ static class NativeDiagnostic
                 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/13/setup.dmg || sha256sum /storage/13/setup.dmg; if test -f /storage/13/setup.dmg.raw.json; then printf '[RAW Recovery equality receipt]\n'; cat /storage/13/setup.dmg.raw.json; fi; 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, retainSuccessful: true);
+        // The Recovery image is immutable after this existing staging marker.
+        // Retain one verified hash instead of rereading 711 MB on every poll.
+        if (logs.Output.Contains("[compatibility-profile] accelerator=kvm", StringComparison.Ordinal)
+            && !File.Exists(Path.Combine(output, "guest-container-resources.last-success.json")))
+            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/13/setup.dmg && sha256sum /storage/13/setup.dmg || exit 1; if test -f /storage/13/setup.dmg.raw.json; then printf '[RAW Recovery equality receipt]\n'; cat /storage/13/setup.dmg.raw.json; fi; 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, retainSuccessful: true);
     }
 
     static async Task CaptureMonitor(string id, string output, string token, CancellationToken cancellation)