test: add voice wake forwarder cache coverage

apps/macos/Sources/Clawdis/VoiceWakeForwarder.swift

@@ -70,6 +70,17 @@ enum VoiceWakeForwarder {
         return "\(self.cliLookupPrefix(target: target, echoPath: echoCliPath)); \(rewritten)"
     }
 
+#if DEBUG
+    // Test-only helpers
+    static func _testSetCliCache(target: String, path: String) {
+        self.cliCache.set((target: target, path: path))
+    }
+
+    static func _testGetCliCache() -> (target: String, path: String)? {
+        self.cliCache.get()
+    }
+#endif
+
     enum VoiceWakeForwardError: LocalizedError, Equatable {
         case invalidTarget
         case launchFailed(String)

apps/macos/Tests/ClawdisIPCTests/VoiceWakeForwarderTests.swift

@@ -1,7 +1,7 @@
 import Testing
 @testable import Clawdis
 
-@Suite struct VoiceWakeForwarderTests {
+@Suite(.serialized) struct VoiceWakeForwarderTests {
     @Test func parsesUserHostPort() {
         let parsed = VoiceWakeForwarder.parse(target: "user@example.local:2222")
         #expect(parsed?.user == "user")
@@ -36,4 +36,31 @@ import Testing
         #expect(command.contains("for c in clawdis-mac /usr/local/bin/clawdis-mac /opt/homebrew/bin/clawdis-mac"))
         #expect(command.contains("\"$CLI\" status"))
     }
+
+    @Test func commandUsesCachedCliForSameTarget() {
+        VoiceWakeForwarder.clearCliCache(); defer { VoiceWakeForwarder.clearCliCache() }
+        VoiceWakeForwarder._testSetCliCache(target: "t1", path: "/tmp/custom-cli")
+
+        let command = VoiceWakeForwarder.commandWithCliPath("clawdis-mac status", target: "t1")
+
+        #expect(command.contains("CLI=\"/tmp/custom-cli\""))
+    }
+
+    @Test func commandIgnoresCacheForDifferentTarget() {
+        VoiceWakeForwarder.clearCliCache(); defer { VoiceWakeForwarder.clearCliCache() }
+        VoiceWakeForwarder._testSetCliCache(target: "t1", path: "/tmp/custom-cli")
+
+        let command = VoiceWakeForwarder.commandWithCliPath("clawdis-mac status", target: "t2")
+
+        #expect(!command.contains("/tmp/custom-cli"))
+    }
+
+    @Test func clearCliCacheRemovesCachedCli() {
+        VoiceWakeForwarder._testSetCliCache(target: "t1", path: "/tmp/custom-cli")
+        VoiceWakeForwarder.clearCliCache(); defer { VoiceWakeForwarder.clearCliCache() }
+
+        let command = VoiceWakeForwarder.commandWithCliPath("clawdis-mac status", target: "t1")
+
+        #expect(!command.contains("/tmp/custom-cli"))
+    }
 }