fix sse HANGING tasks

RETRIEX_SSE_RUNNING_RECONNECT_FINALIZE_FIX_README.md

@@ -0,0 +1,42 @@
+# RetrieX SSE running reconnect / final cleanup fix
+
+Patch-only fix for the streamed answer UI after the job-based SSE flow.
+
+## Problem
+
+After introducing stream jobs, an EventSource reconnect to an already running job could receive:
+
+```text
+retry: 15000
+
+: duplicate-or-finished-stream
+
+event: done
+data: [DONE]
+```
+
+Because `running` jobs were treated like harmless duplicate/finished streams, the browser could finalize an incomplete answer as if it had completed successfully. In addition, the final `done` cleanup still used the streaming cleanup path, which can keep the last `.think` block visible.
+
+## Changes
+
+- `running` duplicate/reconnect streams are no longer silently closed as successful `[DONE]` completions.
+- Only already `completed` duplicate streams are silently closed with `done`.
+- A reconnect to a still-running job now follows the existing explicit error path, so the UI can show a clear interruption message instead of silently accepting a partial answer.
+- Final stream completion now removes all `.think` blocks and the loader class.
+
+## Changed files
+
+- `src/Controller/AskSseController.php`
+- `public/assets/js/base.js`
+
+## After installing
+
+Run:
+
+```bash
+php bin/console cache:clear
+php bin/console mto:agent:config:validate
+php bin/console mto:agent:regression:test
+```
+
+Also hard-refresh the browser or clear browser cache because `public/assets/js/base.js` is client-side JavaScript.

public/assets/js/base.js

@@ -232,16 +232,11 @@ document.addEventListener('DOMContentLoaded', () => {
         return false;
     }
 
-    function cleanupThinkSpans(container, final = false) {
+    function cleanupThinkSpans(container) {
         if (!container) {
             return;
         }
 
-        if (final) {
-            removeThinkSpansOnly(container);
-            return;
-        }
-
         const thinkSpans = Array.from(container.querySelectorAll('.think'));
 
         if (thinkSpans.length === 0) {
@@ -259,9 +254,9 @@ document.addEventListener('DOMContentLoaded', () => {
         removeThinkSpansOnly(container);
     }
 
-    function renderBubbleContent(bubble, raw, final = false) {
+    function renderBubbleContent(bubble, raw) {
         bubble.innerHTML = renderMarkdown(raw);
-        cleanupThinkSpans(bubble, final);
+        cleanupThinkSpans(bubble);
         enhanceChatLinks(bubble);
         scrollChatToBottom();
     }
@@ -338,8 +333,11 @@ document.addEventListener('DOMContentLoaded', () => {
 
     function finalizeStream(bubble, raw) {
         clearScheduledRender();
+        bubble.innerHTML = renderMarkdown(raw);
+        removeThinkSpansOnly(bubble);
         bubble.classList.remove('loader');
-        renderBubbleContent(bubble, raw, true);
+        enhanceChatLinks(bubble);
+        scrollChatToBottom();
     }
 
     async function releaseStreamResources() {
@@ -573,7 +571,7 @@ document.addEventListener('DOMContentLoaded', () => {
                 if (raw.trim() !== '') {
                     const formattedMessage = `<em>${userMessage}</em>`;
                     raw += raw.trim() === '' ? formattedMessage : `\n\n${formattedMessage}`;
-                    renderBubbleContent(bubble, raw, true);
+                    renderBubbleContent(bubble, raw);
                 } else {
                     bubble.innerHTML = `<em>${userMessage}</em>`;
                     enhanceChatLinks(bubble);

src/Controller/AskSseController.php

@@ -526,8 +526,7 @@ final readonly class AskSseController
 
         $status = (string) ($claim['status'] ?? '');
 
-        return $status === self::JOB_STATUS_RUNNING
-            || $status === self::JOB_STATUS_COMPLETED;
+        return $status === self::JOB_STATUS_COMPLETED;
     }
 
     /**