feat: enhance host resolution, filtering, and cache management

- **Strategies**: Add resolver strategy input validation and parsing in setup wizard. Support comma-separated input with known strategy mapping.
- **Client**: Extend Search and SearchAll to include kind and tag filters. Add pagination for full cache refresh handling large datasets.
- **Cache**: Introduce `RecentlyUsed` and `MarkUsed`. Persist `LastUsed` timestamps for entries.
- **TUI**: Add recent hosts view, tag/kind filters, and inline editor for user/port override.
- **Tests**: Comprehensive unit tests for new features, including strategy validation, cache behavior, and client filtering.
- **Docs**: Update README with new TUI features and cache subcommands.

internal/setup/wizard.go

@@ -20,13 +20,13 @@ func RunWizard(cfg *config.Config) error {
 	url := cfg.NetBox.URL
 	token := cfg.NetBox.Token
 	defaultUser := cfg.SSH.DefaultUser
-	strategies := cfg.Resolver.Strategies
+	strategiesRaw := strings.Join(cfg.Resolver.Strategies, ", ")
 	subnets := strings.Join(cfg.Resolver.ManagementSubnets, ", ")
 	interfaceName := cfg.Resolver.InterfaceName
 	cacheTTL := strconv.Itoa(cfg.Cache.TTL)
 
-	if len(strategies) == 0 {
-		strategies = []string{"primary_ip"}
+	if strategiesRaw == "" {
+		strategiesRaw = "primary_ip"
 	}
 	if cacheTTL == "0" {
 		cacheTTL = "3600"
@@ -65,15 +65,12 @@ func RunWizard(cfg *config.Config) error {
 		).Title("SSH defaults"),
 
 		huh.NewGroup(
-			huh.NewMultiSelect[string]().
+			huh.NewInput().
 				Title("Resolver strategies").
-				Description("Order matters: first match wins.").
-				Options(
-					huh.NewOption("primary_ip  — NetBox primary IPv4/IPv6", "primary_ip"),
-					huh.NewOption("management_subnet  — first IP inside a subnet", "management_subnet"),
-					huh.NewOption("interface_name  — IP on a named interface", "interface_name"),
-				).
-				Value(&strategies),
+				Description("Comma-separated, in priority order. First match wins.\nAvailable: primary_ip, management_subnet, interface_name").
+				Placeholder("primary_ip, management_subnet").
+				Value(&strategiesRaw).
+				Validate(validateStrategies),
 			huh.NewInput().
 				Title("Management subnets").
 				Description("Comma-separated CIDRs, e.g. 10.0.0.0/8, 192.168.0.0/16\nOnly used when management_subnet strategy is active.").
@@ -103,6 +100,7 @@ func RunWizard(cfg *config.Config) error {
 		return err
 	}
 
+	strategies := parseStrategies(strategiesRaw)
 	tokenVersion := netbox.TokenVersion(token)
 	if tokenVersion == 1 {
 		fmt.Fprintln(os.Stderr, "\nHinweis: Du verwendest einen Legacy-Token (v1). Erstelle in NetBox einen v2-Token (beginnt mit nbt_) für bessere Kompatibilität.")
@@ -140,6 +138,34 @@ func RunWizard(cfg *config.Config) error {
 	return save(out)
 }
 
+var knownStrategies = map[string]bool{
+	"primary_ip":        true,
+	"management_subnet": true,
+	"interface_name":    true,
+}
+
+func validateStrategies(s string) error {
+	if strings.TrimSpace(s) == "" {
+		return errors.New("at least one strategy is required")
+	}
+	for _, name := range parseStrategies(s) {
+		if !knownStrategies[name] {
+			return fmt.Errorf("unknown strategy %q — available: primary_ip, management_subnet, interface_name", name)
+		}
+	}
+	return nil
+}
+
+func parseStrategies(s string) []string {
+	var out []string
+	for _, part := range strings.Split(s, ",") {
+		if name := strings.TrimSpace(part); name != "" {
+			out = append(out, name)
+		}
+	}
+	return out
+}
+
 func save(cfg config.Config) error {
 	path := config.Path()
 	if err := os.MkdirAll(filepath.Dir(path), 0o700); err != nil {

internal/setup/wizard_test.go

@@ -116,6 +116,68 @@ func TestSave_CreatesConfigDir(t *testing.T) {
 	}
 }
 
+func TestParseStrategies(t *testing.T) {
+	tests := []struct {
+		in   string
+		want []string
+	}{
+		{"primary_ip", []string{"primary_ip"}},
+		{"management_subnet, primary_ip", []string{"management_subnet", "primary_ip"}},
+		{"primary_ip,management_subnet,interface_name", []string{"primary_ip", "management_subnet", "interface_name"}},
+		{"  primary_ip ,  management_subnet  ", []string{"primary_ip", "management_subnet"}},
+		{"", nil},
+		{"  ,  ", nil},
+	}
+	for _, tt := range tests {
+		got := parseStrategies(tt.in)
+		if len(got) != len(tt.want) {
+			t.Errorf("parseStrategies(%q): got %v, want %v", tt.in, got, tt.want)
+			continue
+		}
+		for i := range got {
+			if got[i] != tt.want[i] {
+				t.Errorf("parseStrategies(%q)[%d]: got %q, want %q", tt.in, i, got[i], tt.want[i])
+			}
+		}
+	}
+}
+
+func TestParseStrategies_PreservesOrder(t *testing.T) {
+	got := parseStrategies("interface_name, management_subnet, primary_ip")
+	want := []string{"interface_name", "management_subnet", "primary_ip"}
+	for i, s := range got {
+		if s != want[i] {
+			t.Errorf("order not preserved at [%d]: got %q, want %q", i, s, want[i])
+		}
+	}
+}
+
+func TestValidateStrategies_Valid(t *testing.T) {
+	cases := []string{
+		"primary_ip",
+		"management_subnet, primary_ip",
+		"interface_name, management_subnet, primary_ip",
+	}
+	for _, c := range cases {
+		if err := validateStrategies(c); err != nil {
+			t.Errorf("validateStrategies(%q) should be valid, got: %v", c, err)
+		}
+	}
+}
+
+func TestValidateStrategies_Invalid(t *testing.T) {
+	cases := []string{
+		"",
+		"unknown_strategy",
+		"primary_ip, typo",
+	}
+	for _, c := range cases {
+		if err := validateStrategies(c); err == nil {
+			t.Errorf("validateStrategies(%q) should return an error", c)
+		}
+	}
+}
+
 func TestSave_RoundtripViaLoad(t *testing.T) {
 	dir := t.TempDir()
 	orig := os.Getenv("XDG_CONFIG_HOME")