Add adversarial L4 court chamber with Seer court_debate feed.

Prosecutor and Public Defender use real fleet telemetry only; Judge dispatches L4 commands and emits full transcripts via seer_events and emberwake_court_debate when ai_control_enabled.

server/internal/db/strain_memory_test.go

@@ -0,0 +1,24 @@
+package db
+
+import (
+	"testing"
+)
+
+func TestStrainMemoryInsertList(t *testing.T) {
+	d, err := New(t.TempDir())
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = d.Close() })
+
+	if err := d.InsertStrainMemory("a1", "sess-1", "docker", "#aabbcc", "skip_tier", "tier=docker", "reorder_tiers"); err != nil {
+		t.Fatal(err)
+	}
+	rows, err := d.ListStrainMemory("a1", 10)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(rows) != 1 || rows[0].FailedTier != "docker" || rows[0].Strain != "#aabbcc" {
+		t.Fatalf("rows=%+v", rows)
+	}
+}