feat(F-139): completed feature

work/artifacts/F-139/architect.md

@@ -0,0 +1,14 @@
+# F-139 — Architect (bug fix)
+
+## Bug
+Admin `/admin/logs/stream` SSE connection drops with `ERR_NETWORK_IO_SUSPENDED`.
+
+## Root causes
+1. **Proxy** (`apps/admin/src/app/api/[...path]/route.ts`): did not set `X-Accel-Buffering: no`, which causes intermediate proxies (nginx) to buffer the SSE stream and kill it.
+2. **Client** (`ServerLogViewer.tsx`): `connect()` goes to `reconnecting` status on drop but never actually reconnects — no retry loop.
+3. **`LogBroadcaster.stream()`**: dead code — never used by the SSE route (uses `registerClient()` instead).
+
+## Fixes
+1. Proxy: add `X-Accel-Buffering: no` header; remove explicit `Connection: keep-alive` (default for HTTP/1.1).
+2. Client: add exponential backoff reconnection loop (1s → 2s → 4s … max 30s).
+3. Backend SSE endpoint already correct with proper headers.

work/artifacts/F-139/documenter.md

@@ -0,0 +1,4 @@
+# F-139 — Documenter evidence
+
+## Scope of documentation change
+Bug fix (ERR_NETWORK_IO_SUSPENDED). No new features; no user-facing changes beyond improved reliability. No docs update needed.

work/artifacts/F-139/implementer.md

@@ -0,0 +1,20 @@
+# F-139 — Implementer evidence
+
+## What
+F-139 build evidence: fixed SSE streaming bug. tsc 0, verify.sh verde.
+
+## Files
+- `apps/admin/src/app/api/[...path]/route.ts` — proxy adds `X-Accel-Buffering: no`, uses `Headers` API, removes `Connection: keep-alive`.
+- `apps/admin/src/components/ServerLogViewer.tsx` — added exponential backoff reconnection loop (1s → 2s → 4s … max 30s); calls `reader.cancel()` on abort; resets backoff on success.
+
+## Verification
+- `npm run build` → 0 TypeScript errors.
+- `check-module-boundaries.mjs src` → 0 NEW violations.
+- `./scripts/verify.sh` → green (F-139 in_progress, runtime-consistent).
+
+## Root causes fixed
+| Cause | Fix |
+|-------|-----|
+| Proxy missing `X-Accel-Buffering: no` | Added header to proxy SSE response |
+| Client never reconnects | Exponential backoff retry loop in `connect()` |
+| Dead `LogBroadcaster.stream()` | No-op — never used by SSE endpoint |

work/artifacts/F-139/leader-close.json

@@ -0,0 +1,12 @@
+{
+  "feature_id": "F-139",
+  "agent": "leader",
+  "stage": "close",
+  "verdict": "APPROVED",
+  "summary": "F-139 closed: SSE streaming bug fixed (proxy X-Accel-Buffering header + client exponential backoff reconnection). tsc 0, verify.sh green.",
+  "checks": [
+    {"item": "Gates approved", "ok": true, "evidence": "reviewer.json, security.json, qa.json -> APPROVED"},
+    {"item": "verify.sh", "ok": true, "evidence": "exit 0"}
+  ],
+  "issues": []
+}

work/artifacts/F-139/qa.json

@@ -0,0 +1,12 @@
+{
+  "feature_id": "F-139",
+  "agent": "qa",
+  "stage": "qa_gate",
+  "verdict": "APPROVED",
+  "summary": "tsc 0, verify.sh green. No regressions.",
+  "checks": [
+    {"item": "tsc 0", "ok": true, "evidence": "npm run build 0 errors"},
+    {"item": "verify.sh", "ok": true, "evidence": "exit 0"}
+  ],
+  "issues": []
+}

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": []
+}

work/artifacts/F-139/security.json

@@ -0,0 +1,12 @@
+{
+  "feature_id": "F-139",
+  "agent": "security",
+  "stage": "security_gate",
+  "verdict": "APPROVED",
+  "summary": "Bug fix: no new auth, no new routes, no secrets. SSE proxy headers only. Client reconnection is client-side only.",
+  "checks": [
+    {"item": "No new auth", "ok": true, "evidence": "Same auth flow as before; proxy does not modify credentials"},
+    {"item": "No new secrets", "ok": true, "evidence": "No new env vars or credentials"}
+  ],
+  "issues": []
+}