App 2.40.3: the signal recorder listens to the assistance properties

The ACC recording of 2.32.0 only polled, and the AAD_* properties read
their defaults. The head unit's own assistance manager never polls them:
it subscribes to each for change events, and a vendor HAL may fill a
value only while someone listens. EVHardware gains a read-only
listenToProperties and AssistBlock (global vendor properties 0x21x0A1xx,
all 108 AAD_* ids); the recorder subscribes to that block for its three
minutes and lists the properties heard, those with changing values first.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

EVHardware/lib/src/test/java/com/evsuite/hardware/AssistBlockTest.kt

@@ -0,0 +1,29 @@
+package com.evsuite.hardware
+
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class AssistBlockTest {
+
+    @Test
+    fun `the assistance manager's properties are in the block`() {
+        // First and last int, the target speed and the object distance (floats).
+        for (id in intArrayOf(0x2140A101, 0x2140A171, 0x2160A15B, 0x2160A12C, 0x2160A114)) {
+            assertTrue("0x%08X".format(id), AssistBlock.contains(id))
+        }
+    }
+
+    @Test
+    fun `other properties are not`() {
+        for (id in intArrayOf(
+            0x2140A0FF, // the block before
+            0x2140A201, // the block after
+            0x11400400, // a standard (system) property
+            0x2340A101, // not global
+            0x0140A101, // no group
+        )) {
+            assertFalse("0x%08X".format(id), AssistBlock.contains(id))
+        }
+    }
+}