docs: mark message comment strip pr ready

Author: Astro-Han

.github/frontend-architecture-manifest.md

@@ -174,7 +174,7 @@ bun run frontend:inventory -- --format markdown --max-rows 120
 | Message-flow staging PR #670 | #601 message flow | `codex/frontend-interface-contracts` | Governance PR #667, Contract PR #669 | Extract `createTimelineStaging` from `MessageTimeline` into a session helper and lock the current staging contract with tests | owner extracted, verification added, LOC reduced | focused staging/session tests, frontend inventory, typecheck, lint, #600 perf gate | ready PR open | PR body only |
 | Message-flow PR stack | #601 message flow | post-governance `dev` unless stacked | Governance PR, maybe Contract PR if public imports move | Current launch-path message flow files only | owner extracted, LOC reduced, verification added | typecheck, unit/e2e, #600 perf gate, visual smoke | planned after staging helper | PR body only |
 | Timeline scroll intent PR #671 | #595/#615 scroll-perf | `codex/message-flow-staging-contract` | Governance PR #667, Contract PR #669, Message-flow staging PR #670 | Extract `MessageTimeline` scroll intent and metrics adapter into a session-owned helper with focused unit coverage | owner extracted, verification added, LOC reduced, scroll boundary clarified | focused scroll/session tests, frontend inventory, typecheck, lint, `git diff --check`, #600 perf gate attempted with unrelated heavy-bash seed timeout, targeted scroll perf passed | ready PR open | PR body only |
-| Message comment strip PR | #601 message flow | `codex/timeline-scroll-intent-contract` | Governance PR #667, Contract PR #669, Message-flow staging PR #670, Timeline scroll intent PR #671 | Extract `MessageTimeline` comment parsing and comment strip rendering into a session helper with focused parser tests | owner extracted, verification added, LOC reduced, comment strip boundary clarified | focused message/session tests, frontend inventory, typecheck, lint, `git diff --check`, session e2e smoke partially passed with one stale selector failure, targeted #600 timeline perf passed | ready locally; PR pending | PR body only |
+| Message comment strip PR #672 | #601 message flow | `codex/timeline-scroll-intent-contract` | Governance PR #667, Contract PR #669, Message-flow staging PR #670, Timeline scroll intent PR #671 | Extract `MessageTimeline` comment parsing and comment strip rendering into a session helper with focused parser tests | owner extracted, verification added, LOC reduced, comment strip boundary clarified | focused message/session tests, frontend inventory, typecheck, lint, `git diff --check`, session e2e smoke partially passed with one stale selector failure, targeted #600 timeline perf passed | ready PR open | PR body only |
 | Scroll/perf PR stack | #595/#615 scroll-perf | `dev` or message-flow stack if shared files force it | Governance PR | Scroll owner and perf guard work only | owner extracted, perf verification added | typecheck, targeted unit/e2e, #600 perf gate | planned | PR body only |
 | Settings PR stack | #604 settings | `dev` after checking #642 overlap | Governance PR | Settings page/dialog family only | owner extracted, LOC reduced | typecheck, settings tests/e2e/manual UI check | planned | PR body only |