refactor: replace Clock.System.now with dateNow for WASM JS timestamp handling #532

- Removed `kotlinx.datetime.Clock` dependency and replaced it with a JavaScript-native `dateNow` function in `PageStateExtractor` and `BrowserActionExecutor`.

Author: phodal

mpp-core/src/wasmJsMain/kotlin/cc/unitmesh/agent/e2etest/executor/BrowserActionExecutor.wasmJs.kt

@@ -1,7 +1,6 @@
 package cc.unitmesh.agent.e2etest.executor
 
 import cc.unitmesh.agent.e2etest.model.*
-import kotlinx.datetime.Clock
 
 /**
  * WASM JS implementation of BrowserActionExecutor.
@@ -60,4 +59,7 @@ class WasmJsBrowserActionExecutor private constructor(
 
 actual fun createBrowserActionExecutor(config: BrowserExecutorConfig): BrowserActionExecutor? = null
 
-internal actual fun currentTimeMillis(): Long = Clock.System.now().toEpochMilliseconds()
+@JsFun("() => Date.now()")
+private external fun dateNow(): Double
+
+internal actual fun currentTimeMillis(): Long = dateNow().toLong()

mpp-core/src/wasmJsMain/kotlin/cc/unitmesh/agent/e2etest/perception/PageStateExtractor.wasmJs.kt

@@ -1,13 +1,15 @@
 package cc.unitmesh.agent.e2etest.perception
 
 import cc.unitmesh.agent.e2etest.model.*
-import kotlinx.datetime.Clock
+
+@JsFun("() => Date.now()")
+private external fun dateNow(): Double
 
 /**
  * WASM JS implementation of PageStateExtractor.
- * 
+ *
  * Uses browser APIs or Playwright MCP server.
- * 
+ *
  * @see <a href="https://github.com/phodal/auto-dev/issues/532">Issue #532</a>
  */
 actual interface PageStateExtractor {
@@ -31,16 +33,16 @@ actual interface PageStateExtractor {
 class WasmJsPageStateExtractor(
     private val config: PageStateExtractorConfig
 ) : PageStateExtractor {
-    
+
     override val isAvailable: Boolean = false
-    
+
     override suspend fun extractPageState(): PageState {
         return PageState(
             url = "",
             title = "",
             viewport = Viewport(config.viewportWidth, config.viewportHeight),
             actionableElements = emptyList(),
-            capturedAt = Clock.System.now().toEpochMilliseconds()
+            capturedAt = dateNow().toLong()
         )
     }