Close and archive the 0.9.9 milestone, record that the upstream clips stay unused, and harden the fallback test

src/test/tests/test_npc_character.gd

@@ -460,8 +460,17 @@ func test_forced_fallback_still_builds_the_procedural_rig() -> bool:
 		"fallback still exposes Rig/Head")
 	var c := TestUtils.check(avatar.find_child("HipL", true, false) != null,
 		"fallback limb pivots exist")
+	# The fallback must still animate, not just exist: the pose code drives the same
+	# proxy pivots the skinned path uses.
+	var hip := avatar.find_child("HipL", true, false) as Node3D
+	avatar.velocity = Vector3(0, 0, 1.2)
+	avatar._animate(1.0 / 60.0)
+	var d := TestUtils.check(hip != null and absf(hip.rotation.x) > 0.01,
+		"fallback hip swings when walking")
+	var hand := avatar.find_child("Hand", true, false) as Node3D
+	var e := TestUtils.check(hand != null, "fallback exposes a hand pivot for gear")
 	avatar.free()
-	return a and b and c
+	return a and b and c and d and e
 
 func test_rig_is_articulated() -> bool:
 	var avatar := _avatar(Rules.NpcType.TOURIST, 77)