MacMonitor.xcodeproj/project.pbxproj

@@ -16,6 +16,7 @@
 		1B15F48F6B19E9EA4556ECD5 /* MMStorageTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 78325870C7CD8312AECA2236 /* MMStorageTests.swift */; };
 		1B3F1C8ABF0ADFAA290FF6F6 /* MMSMCParser.m in Sources */ = {isa = PBXBuildFile; fileRef = 375AA781A2AA0A20B119C7B7 /* MMSMCParser.m */; };
 		22CA7351A745F7837E487051 /* MMPeripheralsTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D1486E1512594482380CB492 /* MMPeripheralsTests.swift */; };
+		2665E9DAE13C13239857B4BB /* MMSnapshotContractTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = EA79F8A259CA3056F9B131A9 /* MMSnapshotContractTests.swift */; };
 		2C0F7AB93691ED8AA86FBCF0 /* MMProcessDetailInspector.m in Sources */ = {isa = PBXBuildFile; fileRef = 52E641F8A664D456518EDBA4 /* MMProcessDetailInspector.m */; };
 		2E966D96347D1DDB24E18632 /* AlertModels.swift in Sources */ = {isa = PBXBuildFile; fileRef = B657679DB7D1F39AB4911B7B /* AlertModels.swift */; };
 		3BA6709B727B1AAC6C4310B5 /* MMProcessDetailsTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 7187632FF63B3B0D07FE9194 /* MMProcessDetailsTests.swift */; };
@@ -167,6 +168,7 @@
 		E4B4E94FB2886C60D5548A2A /* SystemTelemetryStore.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SystemTelemetryStore.swift; sourceTree = "<group>"; };
 		E6D9BB71DFE7384D0F0E6AA3 /* MMKernelTelemetryProvider.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MMKernelTelemetryProvider.h; sourceTree = "<group>"; };
 		E9DAC4D5C09C974EE833DC7C /* MMDiskIOTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MMDiskIOTests.swift; sourceTree = "<group>"; };
+		EA79F8A259CA3056F9B131A9 /* MMSnapshotContractTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MMSnapshotContractTests.swift; sourceTree = "<group>"; };
 		F444F4543F0A7421C8F8E636 /* MMKernelTelemetryProvider.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MMKernelTelemetryProvider.m; sourceTree = "<group>"; };
 		F5EC59DCDA5FABDA409CDBCB /* MacMonitor.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = MacMonitor.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		F698B0CC35A89EDEA03F08A5 /* MMDisplayManager.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MMDisplayManager.m; sourceTree = "<group>"; };
@@ -438,6 +440,7 @@
 				7187632FF63B3B0D07FE9194 /* MMProcessDetailsTests.swift */,
 				52471E871E5CC1E444318070 /* MMProcessTests.swift */,
 				940D608A1AF80F75584E744E /* MMSMCTests.swift */,
+				EA79F8A259CA3056F9B131A9 /* MMSnapshotContractTests.swift */,
 				78325870C7CD8312AECA2236 /* MMStorageTests.swift */,
 			);
 			path = Tests;
@@ -618,6 +621,7 @@
 				3BA6709B727B1AAC6C4310B5 /* MMProcessDetailsTests.swift in Sources */,
 				7C9AE2ADAED52E593B52F3AE /* MMProcessTests.swift in Sources */,
 				EC9FA3E4A119277B89E73F8D /* MMSMCTests.swift in Sources */,
+				2665E9DAE13C13239857B4BB /* MMSnapshotContractTests.swift in Sources */,
 				1B15F48F6B19E9EA4556ECD5 /* MMStorageTests.swift in Sources */,
 				9BCE74C5454F81EF80492E75 /* MacMonitorTests.swift in Sources */,
 			);

Sources/App/SystemTelemetryStore.swift

@@ -319,18 +319,18 @@ public final class SystemTelemetryStore {
         }
     }
     
-    private func decodeSnapshot(_ snapshot: [String: [String: Any]]) {
+    func decodeSnapshot(_ snapshot: [String: [String: Any]]) {
         // 1. CPU Load
-        if let cpuDict = snapshot["com.i3omb.macmonitor.telemetry.cpu"] {
+        if let cpuDict = snapshot["com.i3omb.macmonitor.telemetry.cpuload"] {
             var m = CPULoadMetrics()
-            m.systemLoad = (cpuDict["systemLoad"] as? NSNumber)?.doubleValue ?? 0
+            m.systemLoad = (cpuDict["systemPercent"] as? NSNumber)?.doubleValue ?? 0
-            m.userLoad = (cpuDict["userLoad"] as? NSNumber)?.doubleValue ?? 0
+            m.userLoad = (cpuDict["userPercent"] as? NSNumber)?.doubleValue ?? 0
-            m.idleLoad = (cpuDict["idleLoad"] as? NSNumber)?.doubleValue ?? 100
+            m.idleLoad = (cpuDict["idlePercent"] as? NSNumber)?.doubleValue ?? 100
-            m.totalLoad = (cpuDict["totalLoad"] as? NSNumber)?.doubleValue ?? 0
+            m.totalLoad = (cpuDict["totalPercent"] as? NSNumber)?.doubleValue ?? 0
-            if let perCore = cpuDict["perCoreLoad"] as? [NSNumber] {
+            if let cores = cpuDict["cores"] as? [[String: Any]] {
-                m.perCoreLoad = perCore.map { $0.doubleValue }
+                m.perCoreLoad = cores.map { ($0["totalPercent"] as? NSNumber)?.doubleValue ?? 0 }
             }
-            m.cpuFrequencyMHz = (cpuDict["cpuFrequencyMHz"] as? NSNumber)?.doubleValue ?? 0
+            m.cpuFrequencyMHz = ((cpuDict["frequencyHz"] as? NSNumber)?.doubleValue ?? 0) / 1e6
             m.isThrottled = (cpuDict["isThrottled"] as? NSNumber)?.boolValue ?? false
             self.cpuLoad = m
         }
@@ -347,7 +347,8 @@ public final class SystemTelemetryStore {
             m.compressedBytes = (memDict["compressedBytes"] as? NSNumber)?.uint64Value ?? 0
             m.swapTotalBytes = (memDict["swapTotalBytes"] as? NSNumber)?.uint64Value ?? 0
             m.swapUsedBytes = (memDict["swapUsedBytes"] as? NSNumber)?.uint64Value ?? 0
-            m.utilizationPercentage = (memDict["utilizationPercentage"] as? NSNumber)?.doubleValue ?? 0
+            m.utilizationPercentage = m.totalBytes > 0
+                ? Double(m.usedBytes) / Double(m.totalBytes) * 100.0 : 0
             m.pressureLevel = memDict["memoryPressureStatus"] as? String
                 ?? memDict["pressureLevel"] as? String ?? "Normal"
             self.memory = m
@@ -361,11 +362,11 @@ public final class SystemTelemetryStore {
                 return StorageVolumeItem(
                     mountPoint: mount,
                     volumeName: dict["volumeName"] as? String ?? mount,
-                    fileSystem: dict["fileSystem"] as? String ?? "APFS",
+                    fileSystem: dict["fsType"] as? String ?? "APFS",
                     totalBytes: (dict["totalBytes"] as? NSNumber)?.uint64Value ?? 0,
                     freeBytes: (dict["freeBytes"] as? NSNumber)?.uint64Value ?? 0,
                     usedBytes: (dict["usedBytes"] as? NSNumber)?.uint64Value ?? 0,
-                    usedPercentage: (dict["usedPercentage"] as? NSNumber)?.doubleValue ?? 0,
+                    usedPercentage: (dict["usedPercent"] as? NSNumber)?.doubleValue ?? 0,
                     isReadOnly: (dict["isReadOnly"] as? NSNumber)?.boolValue ?? false
                 )
             }
@@ -394,7 +395,7 @@ public final class SystemTelemetryStore {
         if let fanDict = snapshot["com.i3omb.macmonitor.telemetry.fan"],
            let fanArray = fanDict["fans"] as? [[String: Any]] {
             self.fans = fanArray.compactMap { d in
-                let idx = (d["index"] as? NSNumber)?.intValue ?? 0
+                let idx = (d["fanIndex"] as? NSNumber)?.intValue ?? 0
                 return FanTelemetryItem(
                     index: idx,
                     name: d["name"] as? String ?? "Fan \(idx + 1)",
@@ -402,7 +403,7 @@ public final class SystemTelemetryStore {
                     minRPM: (d["minRPM"] as? NSNumber)?.doubleValue ?? 0,
                     maxRPM: (d["maxRPM"] as? NSNumber)?.doubleValue ?? 0,
                     targetRPM: (d["targetRPM"] as? NSNumber)?.doubleValue ?? 0,
-                    utilization: (d["utilization"] as? NSNumber)?.doubleValue ?? 0
+                    utilization: (d["utilizationPercent"] as? NSNumber)?.doubleValue ?? 0
                 )
             }
         }
@@ -446,27 +447,27 @@ public final class SystemTelemetryStore {
         }
         
         // 8. Kernel Counters
-        if let kDict = snapshot["com.i3omb.macmonitor.telemetry.kernel"] {
+        if let kDict = snapshot["com.i3omb.macmonitor.telemetry.kernel.counters"] {
             var m = KernelCountersMetrics()
-            m.contextSwitchesPerSec = (kDict["contextSwitchesPerSec"] as? NSNumber)?.doubleValue ?? 0
+            m.contextSwitchesPerSec = (kDict["contextSwitchesRate"] as? NSNumber)?.doubleValue ?? 0
-            m.syscallsPerSec = (kDict["syscallsPerSec"] as? NSNumber)?.doubleValue ?? 0
+            m.syscallsPerSec = (kDict["syscallsRate"] as? NSNumber)?.doubleValue ?? 0
-            m.pageFaultsPerSec = (kDict["pageFaultsPerSec"] as? NSNumber)?.doubleValue ?? 0
+            m.pageFaultsPerSec = (kDict["pageFaultsRate"] as? NSNumber)?.doubleValue ?? 0
-            m.cowFaultsPerSec = (kDict["cowFaultsPerSec"] as? NSNumber)?.doubleValue ?? 0
+            m.cowFaultsPerSec = (kDict["cowFaultsRate"] as? NSNumber)?.doubleValue ?? 0
-            m.zeroFillFaultsPerSec = (kDict["zeroFillFaultsPerSec"] as? NSNumber)?.doubleValue ?? 0
+            m.zeroFillFaultsPerSec = (kDict["zeroFillsRate"] as? NSNumber)?.doubleValue ?? 0
-            m.pageinsPerSec = (kDict["pageinsPerSec"] as? NSNumber)?.doubleValue ?? 0
+            m.pageinsPerSec = (kDict["pageinsRate"] as? NSNumber)?.doubleValue ?? 0
-            m.pageoutsPerSec = (kDict["pageoutsPerSec"] as? NSNumber)?.doubleValue ?? 0
+            m.pageoutsPerSec = (kDict["pageoutsRate"] as? NSNumber)?.doubleValue ?? 0
-            m.totalContextSwitches = (kDict["totalContextSwitches"] as? NSNumber)?.uint64Value ?? 0
+            m.totalContextSwitches = (kDict["cumulative_contextSwitches"] as? NSNumber)?.uint64Value ?? 0
-            m.totalSyscalls = (kDict["totalSyscalls"] as? NSNumber)?.uint64Value ?? 0
+            m.totalSyscalls = (kDict["cumulative_syscalls"] as? NSNumber)?.uint64Value ?? 0
-            m.totalPageFaults = (kDict["totalPageFaults"] as? NSNumber)?.uint64Value ?? 0
+            m.totalPageFaults = (kDict["cumulative_pageFaults"] as? NSNumber)?.uint64Value ?? 0
             self.kernelCounters = m
         }
         
         // 9. System Load Average & Mach Factor
-        if let loadDict = snapshot["com.i3omb.macmonitor.telemetry.systemload"] {
+        if let loadDict = snapshot["com.i3omb.macmonitor.telemetry.system.load"] {
             var m = SystemLoadMetrics()
-            m.load1Min = (loadDict["load1Min"] as? NSNumber)?.doubleValue ?? 0
+            m.load1Min = (loadDict["load1m"] as? NSNumber)?.doubleValue ?? 0
-            m.load5Min = (loadDict["load5Min"] as? NSNumber)?.doubleValue ?? 0
+            m.load5Min = (loadDict["load5m"] as? NSNumber)?.doubleValue ?? 0
-            m.load15Min = (loadDict["load15Min"] as? NSNumber)?.doubleValue ?? 0
+            m.load15Min = (loadDict["load15m"] as? NSNumber)?.doubleValue ?? 0
             m.taskCount = (loadDict["taskCount"] as? NSNumber)?.intValue ?? 0
             m.threadCount = (loadDict["threadCount"] as? NSNumber)?.intValue ?? 0
             m.machFactor = (loadDict["machFactor"] as? NSNumber)?.doubleValue ?? 0
@@ -474,18 +475,18 @@ public final class SystemTelemetryStore {
         }
         
         // 10. Disk I/O & IOPS
-        if let diskDict = snapshot["com.i3omb.macmonitor.telemetry.diskio"],
+        if let diskDict = snapshot["com.i3omb.macmonitor.telemetry.storage.io"],
            let disks = diskDict["disks"] as? [[String: Any]] {
             self.diskIO = disks.compactMap { d in
                 guard let bsd = d["bsdName"] as? String else { return nil }
                 return DiskIOItem(
                     bsdName: bsd,
-                    readBps: (d["readBps"] as? NSNumber)?.doubleValue ?? 0,
+                    readBps: (d["readBytesPerSec"] as? NSNumber)?.doubleValue ?? 0,
-                    writeBps: (d["writeBps"] as? NSNumber)?.doubleValue ?? 0,
+                    writeBps: (d["writeBytesPerSec"] as? NSNumber)?.doubleValue ?? 0,
                     readIOPS: (d["readIOPS"] as? NSNumber)?.doubleValue ?? 0,
                     writeIOPS: (d["writeIOPS"] as? NSNumber)?.doubleValue ?? 0,
-                    totalBytesRead: (d["totalBytesRead"] as? NSNumber)?.uint64Value ?? 0,
+                    totalBytesRead: (d["cumulativeReadBytes"] as? NSNumber)?.uint64Value ?? 0,
-                    totalBytesWritten: (d["totalBytesWritten"] as? NSNumber)?.uint64Value ?? 0
+                    totalBytesWritten: (d["cumulativeWriteBytes"] as? NSNumber)?.uint64Value ?? 0
                 )
             }
         }
@@ -494,17 +495,17 @@ public final class SystemTelemetryStore {
         if let netDict = snapshot["com.i3omb.macmonitor.telemetry.network.bandwidth"],
            let ifaces = netDict["interfaces"] as? [[String: Any]] {
             self.networkBandwidth = ifaces.compactMap { d in
-                guard let name = d["interfaceName"] as? String else { return nil }
+                guard let name = d["name"] as? String else { return nil }
                 return NetworkBandwidthItem(
                     interfaceName: name,
-                    ipAddress: d["ipAddress"] as? String ?? "",
+                    ipAddress: d["ipv4Address"] as? String ?? "",
                     isUp: (d["isUp"] as? NSNumber)?.boolValue ?? false,
-                    downloadBps: (d["downloadBps"] as? NSNumber)?.doubleValue ?? 0,
+                    downloadBps: (d["downloadBytesPerSec"] as? NSNumber)?.doubleValue ?? 0,
-                    uploadBps: (d["uploadBps"] as? NSNumber)?.doubleValue ?? 0,
+                    uploadBps: (d["uploadBytesPerSec"] as? NSNumber)?.doubleValue ?? 0,
-                    downloadPps: (d["downloadPps"] as? NSNumber)?.doubleValue ?? 0,
+                    downloadPps: (d["downloadPacketsPerSec"] as? NSNumber)?.doubleValue ?? 0,
-                    uploadPps: (d["uploadPps"] as? NSNumber)?.doubleValue ?? 0,
+                    uploadPps: (d["uploadPacketsPerSec"] as? NSNumber)?.doubleValue ?? 0,
-                    totalBytesIn: (d["totalBytesIn"] as? NSNumber)?.uint64Value ?? 0,
+                    totalBytesIn: (d["cumulativeInBytes"] as? NSNumber)?.uint64Value ?? 0,
-                    totalBytesOut: (d["totalBytesOut"] as? NSNumber)?.uint64Value ?? 0
+                    totalBytesOut: (d["cumulativeOutBytes"] as? NSNumber)?.uint64Value ?? 0
                 )
             }
         }
@@ -539,8 +540,8 @@ public final class SystemTelemetryStore {
                     ppid: (d["ppid"] as? NSNumber)?.int32Value ?? 0,
                     name: d["name"] as? String ?? "Unknown",
                     cpuPercent: (d["cpuPercent"] as? NSNumber)?.doubleValue ?? 0,
-                    residentSize: (d["residentSize"] as? NSNumber)?.uint64Value ?? 0,
+                    residentSize: (d["residentBytes"] as? NSNumber)?.uint64Value ?? 0,
-                    virtualSize: (d["virtualSize"] as? NSNumber)?.uint64Value ?? 0,
+                    virtualSize: (d["virtualBytes"] as? NSNumber)?.uint64Value ?? 0,
                     threadCount: (d["threadCount"] as? NSNumber)?.int32Value ?? 1,
                     uid: (d["uid"] as? NSNumber)?.uint32Value ?? 0,
                     username: d["username"] as? String ?? "",

Sources/Telemetry/Fan/MMFanTelemetryProvider.h

@@ -22,7 +22,7 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  * Static calculator method for deterministic unit testing.
  */
-+ (NSDictionary<NSString *, id> *)calculateFanMetricsFromFanList:(NSArray<NSDictionary<NSString *, NSNumber *> *> *)fanList;
++ (NSDictionary<NSString *, id> *)calculateFanMetricsFromFanList:(NSArray<NSDictionary<NSString *, id> *> *)fanList;
 
 @end
 

Sources/Telemetry/Fan/MMFanTelemetryProvider.m

@@ -63,7 +63,7 @@
     return (_probedFanCount >= 0) ? _probedFanCount : 0;
 }
 
-+ (NSDictionary<NSString *, id> *)calculateFanMetricsFromFanList:(NSArray<NSDictionary<NSString *, NSNumber *> *> *)fanList {
++ (NSDictionary<NSString *, id> *)calculateFanMetricsFromFanList:(NSArray<NSDictionary<NSString *, id> *> *)fanList {
     if (!fanList || fanList.count == 0) {
         return @{
             @"fanCount": @(0),
@@ -78,7 +78,7 @@
     double peakRPM = 0.0;
     
     for (NSUInteger i = 0; i < fanList.count; i++) {
-        NSDictionary<NSString *, NSNumber *> *raw = fanList[i];
+        NSDictionary<NSString *, id> *raw = fanList[i];
         double current = [raw[@"currentRPM"] doubleValue];
         double min = [raw[@"minRPM"] doubleValue];
         double max = [raw[@"maxRPM"] doubleValue];
@@ -96,6 +96,7 @@
         
         [resultList addObject:@{
             @"fanIndex": @(i),
+            @"name": raw[@"name"] ?: [NSString stringWithFormat:@"Fan %lu", (unsigned long)(i + 1)],
             @"currentRPM": @(current),
             @"minRPM": @(min),
             @"maxRPM": @(max),
@@ -120,20 +121,31 @@
     }
     
     NSInteger count = [self fanCount];
-    NSMutableArray<NSDictionary<NSString *, NSNumber *> *> *rawList = [NSMutableArray arrayWithCapacity:count];
+    NSMutableArray<NSDictionary<NSString *, id> *> *rawList = [NSMutableArray arrayWithCapacity:count];
     
     for (NSInteger i = 0; i < count; i++) {
         NSString *acKey = [NSString stringWithFormat:@"F%ldAc", (long)i];
         NSString *mnKey = [NSString stringWithFormat:@"F%ldMn", (long)i];
         NSString *mxKey = [NSString stringWithFormat:@"F%ldMx", (long)i];
         NSString *tgKey = [NSString stringWithFormat:@"F%ldTg", (long)i];
+        NSString *idKey = [NSString stringWithFormat:@"F%ldID", (long)i];
         
         NSNumber *ac = [_smcClient readNumericValueForKey:acKey error:nil] ?: @(0.0);
         NSNumber *mn = [_smcClient readNumericValueForKey:mnKey error:nil] ?: @(0.0);
         NSNumber *mx = [_smcClient readNumericValueForKey:mxKey error:nil] ?: @(6000.0);
         NSNumber *tg = [_smcClient readNumericValueForKey:tgKey error:nil] ?: ac;
         
+        NSString *fanName = [NSString stringWithFormat:@"Fan %ld", (long)(i + 1)];
+        NSData *idData = [_smcClient readBytesForKey:idKey error:nil];
+        if (idData.length > 0) {
+            NSString *raw = [[NSString alloc] initWithData:idData encoding:NSASCIIStringEncoding];
+            NSString *trimmed = [raw stringByTrimmingCharactersInSet:
+                                 [NSCharacterSet characterSetWithCharactersInString:@"\0 "]];
+            if (trimmed.length > 0) fanName = trimmed;
+        }
+        
         [rawList addObject:@{
+            @"name": fanName,
             @"currentRPM": ac,
             @"minRPM": mn,
             @"maxRPM": mx,

Sources/Telemetry/Network/MMNetworkBandwidthProvider.h

@@ -21,7 +21,8 @@ NS_ASSUME_NONNULL_BEGIN
 + (NSDictionary<NSString *, id> *)calculateBandwidthMetricsWithCurrentSnapshots:(NSDictionary<NSString *, NSDictionary<NSString *, NSNumber *> *> *)current
                                                               previousSnapshots:(nullable NSDictionary<NSString *, NSDictionary<NSString *, NSNumber *> *> *)previous
                                                                       timeDelta:(NSTimeInterval)timeDelta
-                                                                    ipAddresses:(nullable NSDictionary<NSString *, NSString *> *)ipAddresses;
+                                                                    ipAddresses:(nullable NSDictionary<NSString *, NSString *> *)ipAddresses
+                                                                interfaceUpFlags:(nullable NSDictionary<NSString *, NSNumber *> *)interfaceUpFlags;
 
 @end
 

Sources/Telemetry/Network/MMNetworkBandwidthProvider.m

@@ -44,7 +44,8 @@
 + (NSDictionary<NSString *, id> *)calculateBandwidthMetricsWithCurrentSnapshots:(NSDictionary<NSString *, NSDictionary<NSString *, NSNumber *> *> *)current
                                                               previousSnapshots:(nullable NSDictionary<NSString *, NSDictionary<NSString *, NSNumber *> *> *)previous
                                                                       timeDelta:(NSTimeInterval)timeDelta
-                                                                    ipAddresses:(nullable NSDictionary<NSString *, NSString *> *)ipAddresses {
+                                                                    ipAddresses:(nullable NSDictionary<NSString *, NSString *> *)ipAddresses
+                                                                interfaceUpFlags:(nullable NSDictionary<NSString *, NSNumber *> *)interfaceUpFlags {
     double totalDownBps = 0.0;
     double totalUpBps = 0.0;
     double totalDownPps = 0.0;
@@ -99,9 +100,11 @@
         }
         
         NSString *ip = ipAddresses[name] ?: @"";
+        BOOL isUp = interfaceUpFlags[name] ? [interfaceUpFlags[name] boolValue] : NO;
         
         [interfaces addObject:@{
             @"name": name,
+            @"isUp": @(isUp),
             @"downloadBytesPerSec": @(downBps),
             @"uploadBytesPerSec": @(upBps),
             @"downloadPacketsPerSec": @(downPps),
@@ -171,16 +174,18 @@
         if (buf) free(buf);
     }
     
-    // 2. Query IPv4 addresses via getifaddrs
+    // 2. Query IPv4 addresses and interface flags via getifaddrs
     NSMutableDictionary<NSString *, NSString *> *ipDict = [NSMutableDictionary dictionary];
+    NSMutableDictionary<NSString *, NSNumber *> *upDict = [NSMutableDictionary dictionary];
     struct ifaddrs *ifap = NULL;
     if (getifaddrs(&ifap) == 0) {
         for (struct ifaddrs *ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
+            NSString *name = [NSString stringWithUTF8String:ifa->ifa_name];
+            upDict[name] = @((ifa->ifa_flags & IFF_UP) != 0);
             if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET) {
                 char ipBuf[INET_ADDRSTRLEN] = {0};
                 struct sockaddr_in *sin = (struct sockaddr_in *)ifa->ifa_addr;
                 if (inet_ntop(AF_INET, &sin->sin_addr, ipBuf, sizeof(ipBuf))) {
-                    NSString *name = [NSString stringWithUTF8String:ifa->ifa_name];
                     ipDict[name] = [NSString stringWithUTF8String:ipBuf];
                 }
             }
@@ -205,7 +210,8 @@
     return [MMNetworkBandwidthProvider calculateBandwidthMetricsWithCurrentSnapshots:currentSnapshots
                                                                    previousSnapshots:prev
                                                                            timeDelta:timeDelta
-                                                                         ipAddresses:ipDict];
+                                                                         ipAddresses:ipDict
+                                                                    interfaceUpFlags:upDict];
 }
 
 @end

Sources/Telemetry/Process/MMProcessTelemetryProvider.m

@@ -1,6 +1,7 @@
 #import "MMProcessTelemetryProvider.h"
 #import <libproc.h>
 #import <sys/proc_info.h>
+#import <sys/proc.h>
 #import <pwd.h>
 #import <signal.h>
 #import <mach/mach_time.h>
@@ -127,7 +128,9 @@
             @"residentBytes": @(tai.ptinfo.pti_resident_size),
             @"virtualBytes": @(tai.ptinfo.pti_virtual_size),
             @"threadCount": @(tai.ptinfo.pti_threadnum),
-            @"runningThreads": @(tai.ptinfo.pti_numrunning)
+            @"runningThreads": @(tai.ptinfo.pti_numrunning),
+            @"isStopped": @(tai.pbsd.pbi_status == SSTOP),
+            @"isZombie": @(tai.pbsd.pbi_status == SZOMB)
         }];
     }
     

Tests/MMNetworkBandwidthTests.swift

@@ -49,7 +49,8 @@ final class MMNetworkBandwidthTests: XCTestCase {
             withCurrentSnapshots: curr,
             previousSnapshots: prev,
             timeDelta: timeDelta,
-            ipAddresses: ipDict
+            ipAddresses: ipDict,
+            interfaceUpFlags: ["en0": true, "lo0": true]
         )
         
         let totalDownBps = metrics["totalDownloadBytesPerSec"] as? Double ?? 0

Tests/MMSnapshotContractTests.swift

@@ -0,0 +1,162 @@
+import XCTest
+@testable import MacMonitor
+
+/// Snapshot contract conformance tests (Issues #30 / #31).
+/// Feeds synthetic dictionaries keyed exactly as the Objective-C providers emit them
+/// through `SystemTelemetryStore.decodeSnapshot` and asserts the decoded Swift models
+/// populate — guarding against provider-identifier and field-name drift.
+@MainActor
+final class MMSnapshotContractTests: XCTestCase {
+
+    private var store: SystemTelemetryStore { SystemTelemetryStore.shared }
+
+    // MARK: - Provider identifier coverage (#30)
+
+    func testEmittedProviderIdentifiersAreDecoded() {
+        // The four identifiers that previously never reached the decoder.
+        let snapshot: [String: [String: Any]] = [
+            "com.i3omb.macmonitor.telemetry.cpuload": [
+                "userPercent": 25.0, "systemPercent": 15.0,
+                "idlePercent": 60.0, "totalPercent": 40.0,
+                "cores": [["totalPercent": 10.0], ["totalPercent": 90.0]],
+                "frequencyHz": 2.4e9, "isThrottled": false
+            ],
+            "com.i3omb.macmonitor.telemetry.kernel.counters": [
+                "contextSwitchesRate": 1234.5, "syscallsRate": 9876.5,
+                "pageFaultsRate": 42.0, "cowFaultsRate": 3.0,
+                "zeroFillsRate": 7.0, "pageinsRate": 1.0, "pageoutsRate": 0.5,
+                "cumulative_contextSwitches": 999_999 as UInt64,
+                "cumulative_syscalls": 888_888 as UInt64,
+                "cumulative_pageFaults": 777_777 as UInt64
+            ],
+            "com.i3omb.macmonitor.telemetry.system.load": [
+                "load1m": 1.5, "load5m": 2.0, "load15m": 2.5,
+                "taskCount": 400, "threadCount": 2000, "machFactor": 0.75
+            ],
+            "com.i3omb.macmonitor.telemetry.storage.io": [
+                "disks": [[
+                    "bsdName": "disk0",
+                    "readBytesPerSec": 1_048_576.0, "writeBytesPerSec": 524_288.0,
+                    "readIOPS": 120.0, "writeIOPS": 60.0,
+                    "cumulativeReadBytes": 9_999_999 as UInt64,
+                    "cumulativeWriteBytes": 8_888_888 as UInt64
+                ]]
+            ]
+        ]
+
+        store.decodeSnapshot(snapshot)
+
+        XCTAssertEqual(store.cpuLoad.userLoad, 25.0, accuracy: 0.001)
+        XCTAssertEqual(store.cpuLoad.systemLoad, 15.0, accuracy: 0.001)
+        XCTAssertEqual(store.cpuLoad.totalLoad, 40.0, accuracy: 0.001)
+        XCTAssertEqual(store.cpuLoad.perCoreLoad, [10.0, 90.0])
+        XCTAssertEqual(store.cpuLoad.cpuFrequencyMHz, 2400.0, accuracy: 0.001)
+
+        XCTAssertEqual(store.kernelCounters.contextSwitchesPerSec, 1234.5, accuracy: 0.001)
+        XCTAssertEqual(store.kernelCounters.syscallsPerSec, 9876.5, accuracy: 0.001)
+        XCTAssertEqual(store.kernelCounters.totalContextSwitches, 999_999)
+        XCTAssertEqual(store.kernelCounters.totalSyscalls, 888_888)
+        XCTAssertEqual(store.kernelCounters.totalPageFaults, 777_777)
+
+        XCTAssertEqual(store.systemLoad.load1Min, 1.5, accuracy: 0.001)
+        XCTAssertEqual(store.systemLoad.load5Min, 2.0, accuracy: 0.001)
+        XCTAssertEqual(store.systemLoad.load15Min, 2.5, accuracy: 0.001)
+        XCTAssertEqual(store.systemLoad.taskCount, 400)
+        XCTAssertEqual(store.systemLoad.threadCount, 2000)
+
+        XCTAssertEqual(store.diskIO.count, 1)
+        XCTAssertEqual(store.diskIO[0].bsdName, "disk0")
+        XCTAssertEqual(store.diskIO[0].readBps, 1_048_576.0, accuracy: 0.001)
+        XCTAssertEqual(store.diskIO[0].totalBytesRead, 9_999_999)
+    }
+
+    // MARK: - Field-name drift (#31)
+
+    func testMemoryUtilizationComputedFromUsedOverTotal() {
+        store.decodeSnapshot([
+            "com.i3omb.macmonitor.telemetry.memory": [
+                "totalBytes": 16_000_000_000 as UInt64,
+                "usedBytes": 8_000_000_000 as UInt64,
+                "freeBytes": 8_000_000_000 as UInt64,
+                "memoryPressureStatus": "Normal"
+            ]
+        ])
+        XCTAssertEqual(store.memory.utilizationPercentage, 50.0, accuracy: 0.001)
+    }
+
+    func testStorageVolumeEmitsUsedPercentAndFSType() {
+        store.decodeSnapshot([
+            "com.i3omb.macmonitor.telemetry.storage": [
+                "volumes": [[
+                    "volumeName": "Macintosh HD", "mountPoint": "/",
+                    "devicePath": "/dev/disk1s1", "fsType": "apfs",
+                    "totalBytes": 500_000_000_000 as UInt64,
+                    "usedBytes": 250_000_000_000 as UInt64,
+                    "freeBytes": 250_000_000_000 as UInt64,
+                    "usedPercent": 50.0, "isReadOnly": false
+                ]]
+            ]
+        ])
+        XCTAssertEqual(store.storageVolumes.count, 1)
+        XCTAssertEqual(store.storageVolumes[0].usedPercentage, 50.0, accuracy: 0.001)
+        XCTAssertEqual(store.storageVolumes[0].fileSystem, "apfs")
+    }
+
+    func testNetworkInterfaceEmittedKeys() {
+        store.decodeSnapshot([
+            "com.i3omb.macmonitor.telemetry.network.bandwidth": [
+                "interfaces": [[
+                    "name": "en0", "isUp": true, "ipv4Address": "192.168.1.10",
+                    "downloadBytesPerSec": 5_000.0, "uploadBytesPerSec": 1_000.0,
+                    "downloadPacketsPerSec": 40.0, "uploadPacketsPerSec": 20.0,
+                    "cumulativeInBytes": 10_000_000 as UInt64,
+                    "cumulativeOutBytes": 5_000_000 as UInt64
+                ]]
+            ]
+        ])
+        XCTAssertEqual(store.networkBandwidth.count, 1)
+        let iface = store.networkBandwidth[0]
+        XCTAssertEqual(iface.interfaceName, "en0")
+        XCTAssertTrue(iface.isUp)
+        XCTAssertEqual(iface.ipAddress, "192.168.1.10")
+        XCTAssertEqual(iface.downloadBps, 5_000.0, accuracy: 0.001)
+        XCTAssertEqual(iface.totalBytesIn, 10_000_000)
+    }
+
+    func testProcessResidentAndVirtualBytesDecode() {
+        store.decodeSnapshot([
+            "com.i3omb.macmonitor.telemetry.process": [
+                "processes": [[
+                    "pid": 42, "ppid": 1, "name": "testproc",
+                    "cpuPercent": 3.5,
+                    "residentBytes": 100_000_000 as UInt64,
+                    "virtualBytes": 400_000_000 as UInt64,
+                    "threadCount": 5, "uid": 501, "username": "gordon",
+                    "isStopped": false, "isZombie": false
+                ]]
+            ]
+        ])
+        XCTAssertEqual(store.processes.count, 1)
+        XCTAssertEqual(store.processes[0].residentSize, 100_000_000)
+        XCTAssertEqual(store.processes[0].virtualSize, 400_000_000)
+        XCTAssertFalse(store.processes[0].isStopped)
+        XCTAssertFalse(store.processes[0].isZombie)
+    }
+
+    func testFanEmittedKeysDecode() {
+        store.decodeSnapshot([
+            "com.i3omb.macmonitor.telemetry.fan": [
+                "fans": [[
+                    "fanIndex": 0, "name": "Exhaust",
+                    "currentRPM": 2000.0, "minRPM": 1200.0,
+                    "maxRPM": 6000.0, "targetRPM": 2000.0,
+                    "utilizationPercent": 16.67
+                ]]
+            ]
+        ])
+        XCTAssertEqual(store.fans.count, 1)
+        XCTAssertEqual(store.fans[0].index, 0)
+        XCTAssertEqual(store.fans[0].name, "Exhaust")
+        XCTAssertEqual(store.fans[0].utilization, 16.67, accuracy: 0.01)
+    }
+}