Reorganize protocol test modules

src/protocol/tests/support/packets.rs

@@ -0,0 +1,23 @@
+use alloc::vec::Vec;
+
+use crate::protocol::Packet;
+
+/// Builds a test packet whose route is the only field varied by routing tests.
+///
+/// Keeping the payload stable makes each assertion about endpoint behavior rather
+/// than packet construction, which is important because forged and malformed cases
+/// should fail before any leaf-level procedure handling would matter.
+pub(crate) fn echo_packet(path: Vec<u32>, hook_id: u16) -> Packet {
+    echo_packet_with_end(path, hook_id, false)
+}
+
+/// Builds a test packet with an explicit hook-lifetime marker.
+pub(crate) fn echo_packet_with_end(path: Vec<u32>, hook_id: u16, end_hook: bool) -> Packet {
+    Packet {
+        hook_id,
+        end_hook,
+        path,
+        procedure_id: 1,
+        data: "ABC123".as_bytes().to_vec(),
+    }
+}