test(awg): pin IpcGet introspection parity for all 16 obfuscation params

i1..i5 are emitted by an `i%d=` loop rather than literal per-key sendf calls,
which made a grep-based audit conclude they were missing from the get path.
Live IpcSet -> IpcGet round-trip proves all 16 are reported; unset I-slots
(i2/i4) stay absent. See SPECS/TASKS/031-AWG_PARITY_AUDIT_ADVANCED_SECURITY.

device/lx_ipcget_awg_test.go

@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Pins the AWG get path: IpcGet must report every obfuscation parameter it
+ * accepted, including i1..i5. The I-slots are emitted by an `i%d=` loop rather
+ * than literal per-key sendf calls, which makes them easy to miss when auditing
+ * introspection parity against amneziawg-go by grep alone.
+ */
+
+package device
+
+import (
+	"context"
+	"encoding/hex"
+	"strings"
+	"testing"
+)
+
+func TestIpcGetReportsAWGParams(t *testing.T) {
+	sk, err := newPrivateKey()
+	if err != nil {
+		t.Fatalf("newPrivateKey: %v", err)
+	}
+
+	bind, _ := newChanBindPair()
+	dev := NewDevice(context.Background(), newChanTun(), bind, NewLogger(LogLevelError, "dev: "), 1)
+	t.Cleanup(dev.Close)
+
+	set := strings.Join([]string{
+		"private_key=" + hex.EncodeToString(sk[:]),
+		"jc=4", "jmin=40", "jmax=70",
+		"s1=15", "s2=20", "s3=25", "s4=30",
+		"h1=1", "h2=2", "h3=3", "h4=100-200",
+		"i1=<b 0xf6a1>", "i3=<r 8>", "i5=<t>",
+		"",
+	}, "\n")
+	if err := dev.IpcSet(set); err != nil {
+		t.Fatalf("IpcSet: %v", err)
+	}
+
+	got, err := dev.IpcGet()
+	if err != nil {
+		t.Fatalf("IpcGet: %v", err)
+	}
+	t.Logf("IpcGet:\n%s", got)
+
+	for _, want := range []string{
+		"jc=4", "jmin=40", "jmax=70",
+		"s1=15", "s2=20", "s3=25", "s4=30",
+		"h1=1", "h2=2", "h3=3", "h4=100-200",
+		"i1=<b 0xf6a1>", "i3=<r 8>", "i5=<t>",
+	} {
+		if !strings.Contains(got, want) {
+			t.Errorf("IpcGet missing %q", want)
+		}
+	}
+
+	// Unset I-slots must stay absent, not surface as empty values.
+	for _, absent := range []string{"i2=", "i4="} {
+		if strings.Contains(got, absent) {
+			t.Errorf("IpcGet reported unset %q", absent)
+		}
+	}
+}