fix: share private chat files and harden native lifecycle

Voice.xcodeproj/project.pbxproj

@@ -16,6 +16,7 @@
 		2D1633BB6B8C3E7938A46A42 /* AuthTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 262B5A712708421C35ED6AC0 /* AuthTests.swift */; };
 		302BEC55CA9A10E49C307977 /* ServerConfig.swift in Sources */ = {isa = PBXBuildFile; fileRef = F5683993A1DE677121FFA1F3 /* ServerConfig.swift */; };
 		36DF44D9A7896F18A064847D /* ConversationView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3F3FA9F420065D2127B0AEC0 /* ConversationView.swift */; };
+		4AA89EFF10F261A3FCF8C366 /* ChatExport.swift in Sources */ = {isa = PBXBuildFile; fileRef = 14505F4DA9DB1610B2EEB271 /* ChatExport.swift */; };
 		4B9A3D956FB6CB7F6A231955 /* AuthClient.swift in Sources */ = {isa = PBXBuildFile; fileRef = DAC751BFB00B04C73D19C714 /* AuthClient.swift */; };
 		57E6476135CE30495E02D723 /* VoiceUITests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8309AC6885ED7EB0047AE211 /* VoiceUITests.swift */; };
 		5D37D5933765F80A283DC47B /* ChatStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6CBEDBE8C5065D716DAECDE2 /* ChatStore.swift */; };
@@ -69,6 +70,7 @@
 
 /* Begin PBXFileReference section */
 		0FC167F6658CFEC9546A7E9F /* AgentMonitor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AgentMonitor.swift; sourceTree = "<group>"; };
+		14505F4DA9DB1610B2EEB271 /* ChatExport.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatExport.swift; sourceTree = "<group>"; };
 		1CF5F1830927F8D44C4CC89A /* ChatViews.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ChatViews.swift; sourceTree = "<group>"; };
 		20A82F8996DEA166C94A7956 /* ServerReplacementCoordinatorTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ServerReplacementCoordinatorTests.swift; sourceTree = "<group>"; };
 		262B5A712708421C35ED6AC0 /* AuthTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AuthTests.swift; sourceTree = "<group>"; };
@@ -204,6 +206,7 @@
 		94F63FF6C1F0CD224010E2F5 /* Chat */ = {
 			isa = PBXGroup;
 			children = (
+				14505F4DA9DB1610B2EEB271 /* ChatExport.swift */,
 				41286AD7E2621F77B4F7CC85 /* ChatFeatures.swift */,
 				96CFD3A353D5B5E4A97D263F /* ChatModels.swift */,
 				6CBEDBE8C5065D716DAECDE2 /* ChatStore.swift */,
@@ -398,6 +401,7 @@
 				C00D1878C2AB3D8B6F9562B6 /* AgentMonitor.swift in Sources */,
 				4B9A3D956FB6CB7F6A231955 /* AuthClient.swift in Sources */,
 				6488E54A6D93278C04D870E2 /* AuthStore.swift in Sources */,
+				4AA89EFF10F261A3FCF8C366 /* ChatExport.swift in Sources */,
 				29EF2C8C93F9A4270816D22D /* ChatFeatures.swift in Sources */,
 				5E4FBAAB530CA2BEEA013A57 /* ChatModels.swift in Sources */,
 				5D37D5933765F80A283DC47B /* ChatStore.swift in Sources */,