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_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")