Service: harden for unattended running (auto-restart, findable logs, resume)

Local checkpoint - NOT for public release. A "what else does a service need" pass.

- AUTO-RESTART ON CRASH: DoInstall now sets sc failure actions (restart 5s/10s/then 60s,
  reset daily). Without this a crashed service stays dead until reboot - fatal for an
  always-on streamer.
- FINDABLE LOGS: --run-service redirects the service's data dir to the machine-wide
  ProgramData\RemSound\service location, so its log sits next to its profile instead of
  buried in the SYSTEM account's AppData.
- POWER RESUME: the service handles OnPowerEvent and re-opens capture on wake (audio
  devices re-initialise after sleep; the device-change watcher usually catches it, but a
  resume doesn't always fire an endpoint change, so we re-open explicitly).
- Start/stop already auto-log to the Windows Event Log via ServiceBase.

Test: "Service registration args" now also checks the audio-service dependency and the
auto-restart failure args. Gate 27/27.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/RemSound.App/ServiceSendHost.cs

@@ -166,6 +166,20 @@ public sealed class ServiceSendHost : IDisposable
         Suspend();
     }
 
+    /// <summary>Force a re-open of capture if we intend to send — called after a power resume, when the
+    /// audio devices have re-initialised and the current capture may be dead. The device-change watcher
+    /// usually catches this too, but a resume doesn't always fire an endpoint change, so we re-open
+    /// explicitly to be safe.</summary>
+    public void ReopenAfterResume()
+    {
+        if (!wantSending || disposed) return;
+        var profile = loadProfile();
+        if (profile is null) return;
+        log?.Invoke("service: re-opening capture after power resume");
+        Suspend();
+        ApplyProfile(profile);
+    }
+
     /// <summary>Device-set change callback (COM thread). While we intend to send, (re)open capture — this
     /// is the event that fires when the audio stack finishes coming up at boot, a device is plugged or
     /// unplugged, or the audio service restarts. Debounced: a single hot-plug fires several notifications.</summary>