Add native Windows support (#91)

- Native Windows daemon using TCP loopback endpoints
- Direct-mode fallback for CLI/daemon compatibility
- Comment operations over RPC
- PowerShell installer script
- Go 1.24 requirement
- Cross-OS testing documented

Co-authored-by: danshapiro <danshapiro@users.noreply.github.com>
Amp-Thread-ID: https://ampcode.com/threads/T-c6230265-055f-4af1-9712-4481061886db
Co-authored-by: Amp <amp@ampcode.com>

internal/rpc/version_test.go

@@ -462,7 +462,7 @@ func TestMetricsOperation(t *testing.T) {
 
 // Helper function
 func contains(s, substr string) bool {
-	return len(s) >= len(substr) && (s == substr || len(substr) == 0 || 
+	return len(s) >= len(substr) && (s == substr || len(substr) == 0 ||
 		(len(s) > 0 && len(substr) > 0 && findSubstring(s, substr)))
 }