Complete v6.4.0-rc.13 release packet proof

Assert the candidate-specific Docker cadence and Proxmox identity outcomes, and extend rollback resolution coverage through rc.13.

scripts/installtests/build_release_assets_test.go

@@ -946,6 +946,16 @@ func TestCurrentPrereleasePacketTracksInstallMetadata(t *testing.T) {
 			"Publication still requires exact-source identity, immutable manifests, signatures, public/private artifact integrity, installer smoke, and final convergence verification.",
 		)
 	}
+	if version == "6.4.0-rc.13" {
+		assertFileContainsAllNormalized(t, releaseNotesPath,
+			"Unchanged stopped-container details are refreshed every 15 minutes instead of being re-inspected every 30 seconds",
+			"Separate standalone sites that reuse a short node name can link to their own host agents through unique provider-observed addresses",
+		)
+		assertFileContainsAllNormalized(t, changelogPath,
+			"Docker hosts with many stopped containers no longer re-inspect every historical container on each 30-second agent report",
+			"Separate standalone Proxmox sites that reuse a short node name no longer lose correct agent links when their provider-observed addresses uniquely disambiguate them",
+		)
+	}
 	assertFileContainsAll(t, repoFile("docs", "RELEASE_NOTES.md"),
 		"docs/releases/RELEASE_NOTES_v"+version+".md",
 		"docs/releases/V6_CHANGELOG_v"+version+".md",

scripts/installtests/install_docker_sh_test.go

@@ -152,6 +152,8 @@ func TestPreviousStableForPrereleaseVersionCrossesMinorBoundaries(t *testing.T)
 		{version: "6.4.0-rc.9", want: "6.3.2"},
 		{version: "6.4.0-rc.10", want: "6.3.2"},
 		{version: "6.4.0-rc.11", want: "6.3.2"},
+		{version: "6.4.0-rc.12", want: "6.3.2"},
+		{version: "6.4.0-rc.13", want: "6.3.2"},
 	}
 
 	for _, test := range tests {