feat(F-139): completed feature

work/artifacts/F-139/reviewer.json

@@ -0,0 +1,14 @@
+{
+  "feature_id": "F-139",
+  "agent": "reviewer",
+  "stage": "review_gate",
+  "verdict": "APPROVED",
+  "summary": "SSE streaming bug fixed: proxy adds X-Accel-Buffering: no; client reconnects with exponential backoff (1s→30s). Backend headers already correct.",
+  "checks": [
+    {"item": "Proxy X-Accel-Buffering header", "ok": true, "evidence": "apps/admin/src/app/api/[...path]/route.ts sets header for SSE path"},
+    {"item": "Client reconnection loop", "ok": true, "evidence": "ServerLogViewer.tsx connect() with scheduleRetry() + exponential backoff; MAX_DELAY=30s; reset on success"},
+    {"item": "No Connection: keep-alive", "ok": true, "evidence": "Explicit Connection header removed from proxy"},
+    {"item": "tsc/verify", "ok": true, "evidence": "npm run build 0 errors; verify.sh green"}
+  ],
+  "issues": []
+}