Android: centralize canvas protocol strings

apps/android/app/src/test/java/com/steipete/clawdis/node/protocol/ClawdisProtocolConstantsTest.kt

@@ -0,0 +1,46 @@
+package com.steipete.clawdis.node.protocol
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class ClawdisProtocolConstantsTest {
+  @Test
+  fun mapsKnownScreenCommandsToCanvas() {
+    val mappings =
+      listOf(
+        Pair(ClawdisScreenCommand.Show, ClawdisCanvasCommand.Show),
+        Pair(ClawdisScreenCommand.Hide, ClawdisCanvasCommand.Hide),
+        Pair(ClawdisScreenCommand.SetMode, ClawdisCanvasCommand.SetMode),
+        Pair(ClawdisScreenCommand.Navigate, ClawdisCanvasCommand.Navigate),
+        Pair(ClawdisScreenCommand.Eval, ClawdisCanvasCommand.Eval),
+        Pair(ClawdisScreenCommand.Snapshot, ClawdisCanvasCommand.Snapshot),
+      )
+
+    for ((screen, canvas) in mappings) {
+      assertEquals(
+        canvas.rawValue,
+        ClawdisInvokeCommandAliases.canonicalizeScreenToCanvas(screen.rawValue),
+      )
+    }
+  }
+
+  @Test
+  fun mapsUnknownScreenNamespaceToCanvas() {
+    assertEquals("canvas.foo", ClawdisInvokeCommandAliases.canonicalizeScreenToCanvas("screen.foo"))
+  }
+
+  @Test
+  fun leavesNonScreenCommandsUnchanged() {
+    assertEquals(
+      ClawdisCameraCommand.Snap.rawValue,
+      ClawdisInvokeCommandAliases.canonicalizeScreenToCanvas(ClawdisCameraCommand.Snap.rawValue),
+    )
+  }
+
+  @Test
+  fun capabilitiesUseStableStrings() {
+    assertEquals("canvas", ClawdisCapability.Canvas.rawValue)
+    assertEquals("camera", ClawdisCapability.Camera.rawValue)
+    assertEquals("voiceWake", ClawdisCapability.VoiceWake.rawValue)
+  }
+}