Sync generated provider output

.opencode/skills/impeccable/scripts/live-browser.js

@@ -6216,6 +6216,71 @@
     return /\.[cm]?[jt]sx$/i.test(String(filePath || ''));
   }
 
+  function sourceHasSessionWrapper(text, sessionId) {
+    const src = String(text || '');
+    return src.indexOf('data-impeccable-variants="' + sessionId + '"') !== -1
+      || src.indexOf("data-impeccable-variants='" + sessionId + "'") !== -1
+      || src.indexOf('impeccable-variants-start ' + sessionId) !== -1;
+  }
+
+  /**
+   * Orphan probe for JSX targets (#439 + #454). An unmounted wrapper and a
+   * wrapper deleted from source look identical in the DOM, and only the second
+   * is an orphan, so the DOM alone cannot decide. #454 forbids parsing or
+   * injecting raw JSX; reading the file as plain text and matching the session
+   * marker honors that, because no DOM is ever built from what comes back.
+   * Marker present means the component is simply not mounted right now (a
+   * closed modal, another route) and the variant observer keeps waiting.
+   * Marker absent after the same retry budget the HTML path uses means the
+   * file was edited out from under the session, which no reload, HMR push, or
+   * server restart can repair, so the session self-discards and hands the
+   * surface back to the picker.
+   */
+  function probeJsxWrapperForOrphan(filePath, sessionId, opts) {
+    const attempt = opts._orphanAttempt || 0;
+    const url = 'http://localhost:' + PORT + '/source?token=' + TOKEN + '&path=' + encodeURIComponent(filePath);
+    const stillActive = () => sessionId === currentSessionId && (state === 'GENERATING' || state === 'CYCLING');
+    const retryLater = () => {
+      setTimeout(() => {
+        if (!stillActive()) return;
+        injectVariantsFromSource(filePath, sessionId, { ...opts, _orphanAttempt: attempt + 1 });
+      }, COMPLETED_SOURCE_FALLBACK_RETRY_MS);
+    };
+    // Discarding is durable (the session moves to the discarded phase and the
+    // picker replaces it), so it needs evidence that the wrapper is gone: a
+    // read that answers without the marker, or a 404 (the file itself was
+    // renamed or deleted). Either kind retries on the shared budget first.
+    // A read that fails for any other reason (the server briefly away, a
+    // transient fetch error) says nothing about the wrapper; after the budget
+    // the session is kept, the user told, and the next event retries.
+    const onNoWrapper = (reason) => {
+      if (!stillActive()) return;
+      if (attempt < COMPLETED_SOURCE_FALLBACK_RETRIES) { retryLater(); return; }
+      discardOrphanedSession(reason);
+    };
+    const onUnreadable = (detail) => {
+      if (!stillActive()) return;
+      if (attempt < COMPLETED_SOURCE_FALLBACK_RETRIES) { retryLater(); return; }
+      console.warn('[impeccable] Could not read source to check the variant wrapper; keeping the session: ' + detail);
+      showToast('Could not read the source file to check this session; it stays open and is checked again on the next event.', 5500);
+    };
+    fetch(url)
+      .then(r => { if (!r.ok) throw new Error('source read failed: ' + r.status); return r.text(); })
+      .then(text => {
+        if (!stillActive()) return;
+        if (sourceHasSessionWrapper(text, sessionId)) return;
+        onNoWrapper('variant wrapper missing from source');
+      })
+      .catch(err => {
+        const detail = err && err.message ? err.message : 'fetch failed';
+        if (/source read failed: 404$/.test(detail)) {
+          onNoWrapper('source file missing (404) while checking for the variant wrapper');
+          return;
+        }
+        onUnreadable(detail);
+      });
+  }
+
   function completeSourceInjection(wrapper, sessionId, opts) {
     recoveryWaitingForAnchor = false;
     if (pendingVariantAnchorRetryObserver) {
@@ -6326,14 +6391,7 @@
         return;
       }
       if (opts.orphanDiscard && !liveWrapper && sessionId === currentSessionId) {
-        const attempt = opts._orphanAttempt || 0;
-        if (attempt < COMPLETED_SOURCE_FALLBACK_RETRIES) {
-          setTimeout(() => {
-            if (sessionId !== currentSessionId) return;
-            if (state !== 'GENERATING' && state !== 'CYCLING') return;
-            injectVariantsFromSource(filePath, sessionId, { ...opts, _orphanAttempt: attempt + 1 });
-          }, COMPLETED_SOURCE_FALLBACK_RETRY_MS);
-        }
+        probeJsxWrapperForOrphan(filePath, sessionId, opts);
       }
       return;
     }