fix: skip steps after finish:stop, no setTimeout

После finish:stop — все последующие step-события это дубликаты/
перепроекция. Пропускаем их через флаг done.

Убран setTimeout cleanup — чистка синхронная.

index.ts

@@ -126,6 +126,7 @@ async function runPlugin(ctx: any, options: any, dataDir: string) {
       currentStepID: string | null
       context: MatrixEventContext
       finalResponse?: string
+      done: boolean                        // true после finish:stop
     }
 
     const sessionsBySessionID = new Map<string, SessionState>()
@@ -253,6 +254,10 @@ async function runPlugin(ctx: any, options: any, dataDir: string) {
 
           if (eventType === "session.step.ended" && sessionId && assistantMsgID) {
             const state = sessionsBySessionID.get(sessionId)
+
+            // Skip steps after final (finish:stop) — they are re-projections/duplicates
+            if (state?.done) continue
+
             const step = state?.steps.get(assistantMsgID)
             const finish = eventData?.data?.finish || ""
 
@@ -262,13 +267,15 @@ async function runPlugin(ctx: any, options: any, dataDir: string) {
               log(`Step ${step.tools.length} tool(s), ${step.text.length} chars text → sent to ${state.context.roomId}`)
             }
 
-            // If this is the final step, resolve the pending promise
+            // If this is the final step, mark done and resolve the pending promise
             if (finish === "stop" && state) {
+              state.done = true
               const pending = pendingResponses.get(sessionId)
               if (pending && state.finalResponse) {
                 pendingResponses.delete(sessionId)
                 pending.resolve(state.finalResponse)
               }
+              sessionsBySessionID.delete(sessionId)
             }
 
             continue
@@ -430,6 +437,7 @@ async function runPlugin(ctx: any, options: any, dataDir: string) {
           currentStepID: null,
           context,
           finalResponse: undefined,
+          done: false,
         })
 
         // Wait for response text from event subscription