feat: add sproutclaw webui

packages/coding-agent/src/core/agent-session.ts

@@ -876,6 +876,14 @@ export class AgentSession {
 		return this.sessionManager.getSessionName();
 	}
 
+	/**
+	 * Monotonic counter emitted on each completed turn ({@link TurnEndEvent.turnIndex}); resets on agent_start.
+	 * Mirrors the value shown next to ✓ Turn N complete-style UI (N equals this counter after idle).
+	 */
+	get turnIndex(): number {
+		return this._turnIndex;
+	}
+
 	/** Scoped models for cycling (from --models flag) */
 	get scopedModels(): ReadonlyArray<{ model: Model<any>; thinkingLevel?: ThinkingLevel }> {
 		return this._scopedModels;