docs(backlog): record B5, G, E (markdown + go.mod fix) in RETRO

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

BACKLOG.md

@@ -34,9 +34,13 @@ matching bullets below are superseded; only the noted follow-ups remain live:
 - **C-A2** stage-level plan checkpointing — `1a1b5cc`
 - **B §4** architect contradiction-check (display-only) — `eae0a0c` *(follow-up: decision emit hook + in-session L3 embedding)*
 - **D** dedicated `SourceFetched`/`LowQualityExtraction` events — `b098d87`; dynamic per-session egress allowlist — `027ff1f` *(follow-up: thread sessionId into `NetworkHostRule`; batch fetch-approval still unbuilt)*
+- **B §5** reviewer static-first (runner + event + context-exclusion, live-wired) — `447fc7a` *(follow-up: a stage that emits `StaticFindingsRecordedEvent`)*
+- **G** narration-lane lag — `eff8f8d`
+- **E** tui-go go.mod directive fix — `1e6699a`; markdown rendering in chat turns — `da72ee5`
 
-**Not yet started (verifiable, Kotlin):** B §5 reviewer static-first infra; D batch fetch-approval; B §2 plan-derived diff manifest; G narration-lane lag; H freestyle follow-ups.
-**Blocked in this sandbox:** E tui-go items (Go toolchain absent); F live-QA gates + D §6 web approval client (need local model / SearXNG / network / GPU).
+**Not yet started (verifiable, Kotlin):** D batch fetch-approval; B §2 plan-derived diff manifest; H freestyle follow-ups.
+**§E tui-go (now UNBLOCKED — Go via `GOTOOLCHAIN=auto` go1.24.2):** session list / resume view; per-event render-matrix golden tests; approval ergonomics audit; plan comparison view; idea-board→profile promotion.
+**Still blocked in this sandbox:** F live-QA gates + D §6 web approval client (need local model / SearXNG / GPU).
 
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