feat(ClineProvider): adding simple diagnostics for grey screen debug

Author: edelauna

src/core/webview/ClineProvider.ts

@@ -848,6 +848,8 @@ export class ClineProvider
 			const viewStateDisposable = webviewView.onDidChangeViewState(() => {
 				if (this.view?.visible) {
 					this.postMessageToWebview({ type: "action", action: "didBecomeVisible" })
+				} else {
+					this.logWebviewHiddenDiagnostics()
 				}
 			})
 
@@ -857,6 +859,8 @@ export class ClineProvider
 			const visibilityDisposable = webviewView.onDidChangeVisibility(() => {
 				if (this.view?.visible) {
 					this.postMessageToWebview({ type: "action", action: "didBecomeVisible" })
+				} else {
+					this.logWebviewHiddenDiagnostics()
 				}
 			})
 
@@ -2913,6 +2917,21 @@ export class ClineProvider
 		return this.clineStack[this.clineStack.length - 1]
 	}
 
+	private logWebviewHiddenDiagnostics(): void {
+		const task = this.getCurrentTask()
+		if (!task || task.abort || task.abandoned) {
+			return
+		}
+		this.log(
+			`[Zoo Code] Webview became hidden during active task — possible gray-screen event.\n` +
+				`  taskId:       ${task.taskId}\n` +
+				`  messageCount: ${task.clineMessages.length}\n` +
+				`  stackDepth:   ${this.clineStack.length}\n` +
+				`  timestamp:    ${new Date().toISOString()}\n` +
+				`If the panel appears gray, open the Zoo Code output channel (View → Output → Zoo-Code) and share this log with support@zoocode.dev`,
+		)
+	}
+
 	public getRecentTasks(): string[] {
 		if (this.recentTasksCache) {
 			return this.recentTasksCache