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>

cmd/bd/main_test.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"sync"
 	"testing"
@@ -555,6 +556,10 @@ func TestAutoFlushJSONLContent(t *testing.T) {
 
 // TestAutoFlushErrorHandling tests error scenarios in flush operations
 func TestAutoFlushErrorHandling(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("chmod-based read-only directory behavior is not reliable on Windows")
+	}
+
 	// Create temp directory for test database
 	tmpDir, err := os.MkdirTemp("", "bd-test-error-*")
 	if err != nil {