feat: Add 'quiet' option for RawCommand and GetVar

Introduce a quiet flag to RawCommand and propagate it to GetVar so callers can suppress response handling/logging. RawCommand(string command, bool quiet = false) will return immediately after receiving the response when quiet is true (skipping additional failure handling), and GetVar(key, useCache=true, quiet=false) forwards the flag and updates the debug message. The change also uses quiet=true when checking is-userspace to avoid triggering verbose/failure handling for that probe.

Author: 13584452567

FirmwareKit.Comm.Fastboot/Command/InternalRawCommand.cs

@@ -8,7 +8,7 @@ public partial class FastbootDriver
     /// <summary>
     /// Sends the command
     /// </summary>
-    public FastbootResponse RawCommand(string command)
+    public FastbootResponse RawCommand(string command, bool quiet = false)
     {
         FastbootDebug.Log("Sending command: " + command);
         byte[] cmdBytes = Encoding.UTF8.GetBytes(command);
@@ -39,6 +39,11 @@ public FastbootResponse RawCommand(string command)
         var response = HandleResponse();
         FastbootDebug.Log("Response received: " + response.Response);
 
+        if (quiet)
+        {
+            return response;
+        }
+
         if (response.Result == FastbootState.Fail)
         {
             if (command.StartsWith("snapshot-update", StringComparison.OrdinalIgnoreCase))

FirmwareKit.Comm.Fastboot/FastbootDriver.cs

@@ -40,7 +40,7 @@ public bool IsUserspace()
         try
         {
             // Always query device directly; cached values can be stale across reboot mode changes.
-            return GetVar("is-userspace", useCache: false) == "yes";
+            return GetVar("is-userspace", useCache: false, quiet: true) == "yes";
         }
         catch
         {
@@ -291,11 +291,11 @@ public Dictionary<string, string> GetVarAll()
     /// <summary>
     /// Gets a single attribute (with caching if enabled)
     /// </summary>
-    public string GetVar(string key, bool useCache = true)
+    public string GetVar(string key, bool useCache = true, bool quiet = false)
     {
-        FastbootDebug.Log($"GetVar(key={key}, useCache={useCache})");
+        FastbootDebug.Log($"GetVar(key={key}, useCache={useCache}, quiet={quiet})");
         if (useCache && _varCache.TryGetValue(key, out string? cached)) return cached;
-        var resObj = RawCommand("getvar:" + key);
+        var resObj = RawCommand("getvar:" + key, quiet);
         if (resObj.Result == FastbootState.Fail || resObj.Result == FastbootState.Timeout)
         {
             // Do not cache transient failures/timeouts; caller can retry later.