fix: check done flag at top of event loop

state.done = true → все последующие события пропускаются
на уровне цикла, до любых handlers. Включая text.ended,
step.started, reasoning.*, tool.*.

index.ts

@@ -147,6 +147,10 @@ async function runPlugin(ctx: any, options: any, dataDir: string) {
           const sessionId = eventData?.data?.sessionID || ""
           const assistantMsgID = eventData?.data?.assistantMessageID || ""
 
+          // Skip all events after session is done
+          const state = sessionsBySessionID.get(sessionId)
+          if (state?.done) continue
+
           // ── Step lifecycle ──────────────────────────────────────────────
 
           if (eventType === "session.step.started") {
@@ -242,6 +246,8 @@ async function runPlugin(ctx: any, options: any, dataDir: string) {
 
           if (eventType === "session.text.ended" && assistantMsgID) {
             const state = sessionsBySessionID.get(sessionId)
+            // Skip text events after final step
+            if (state?.done) continue
             const step = state?.steps.get(assistantMsgID)
             if (step) {
               step.text = eventData?.data?.text || ""