What's Changed

• perf(post-detail): SSR 1단계 블로킹 축소 — timeout + 제휴 스트리밍 by @sdk-kr in #1251

• feat(comments): preloadMemos로 author_memo inline 사용 (W4-X Phase 2) by @sdk-kr in #1252

• feat(post-detail): preloadMemos로 글 작성자 author_memo cache 채우기 (W4-X3) by @sdk-kr in #1253

• feat: /content-market 플레이스홀더 + 사이드바 단독 메뉴 정렬/아이콘 수정 by @sdk-kr in #1254

• fix: 사이드바 단독 메뉴 정렬/아이콘/외부링크 (PR #1254 누락분) by @sdk-kr in #1255

• feat(board-list): preloadMemos로 memo-store cache 채움 — N+1 최종 완결 (W4-X4) by @sdk-kr in #1256

• fix: 댓글/본문 유튜브 임베드 폭 560px 제한 (#12006) by @sdk-kr in #1257

• fix: 댓글 공감자 배치 50개 청크 분할 (#11996) by @sdk-kr in #1258

• fix: 게시글 액션바 버튼 모바일 터치 타겟 44px (#12016) by @sdk-kr in #1260

• fix: 홈 공감글 터치 오인식 근본 원인 3건 (#11998) by @sdk-kr in #1259

• feat(telemetry): heap metrics logger (60s stdout → otel.logs) by @sdk-kr in #1261

• fix(csp): STATIC_ASSET_ORIGIN fallback + deploy runbook 강화 by @sdk-kr in #1262

• fix: TagNav active 메뉴 클릭 시 새로고침 (#12027) by @sdk-kr in #1264

• fix(csp): allow static asset origin fallback by @sdk-kr in #1263

• fix(jwt-cache): 60s 주기 만료 entry cleanup (메모리 누수 차단) by @sdk-kr in #1265

• fix: 상세 페이지 최근글 목록이 이전 게시판 상태 유지 (#12040) by @sdk-kr in #1266

• fix: 공감/비공감 false 실패 알림 제거 (#12004) by @sdk-kr in #1267

• feat(hooks): ssr_auth cookie for CDN cache key normalization by @sdk-kr in #1269

• fix: 임시저장 시 첨부파일 보존 + 용량 초과 경고 (#12029) by @sdk-kr in #1268

• feat(auth): emit user_basic cookie on login (Phase A of split cookie) by @sdk-kr in #1270

• feat(avatar): Lambda variant 지원 — getAvatarUrl size + 컴포넌트 by @sdk-kr in #1271

• feat(auth): user_basic cookie 파서 (Phase B scaffolding) by @sdk-kr in #1272

• feat(auth): client-side user_basic read — /api/auth/me 생략 (Phase C) by @sdk-kr in #1274

• feat(auth): authenticateSSR user_basic fast-path (Phase B wire-up) by @sdk-kr in #1273

• feat(auth): user_basic 재발행 on profile image 변경 (Phase A 확장) by @sdk-kr in #1275

• fix(types): hooks.server.ts mb_image_updated_at number→string (svelte-check fail) by @sdk-kr in #1278

• refactor(avatar): getAvatarUrl → 컴포넌트 대량 교체 by @sdk-kr in #1277

• fix(avatar): size prop 기본값 제거 — Lambda 미배포 시 원본 URL 사용 by @sdk-kr in #1276

• feat(member-memo): Phase 1C — wire applyFilter('post.list.enrich') in SSR by @sdk-kr in #1280

• feat(plugin): server-side hook loader — Phase 1A open-core separation by @sdk-kr in #1279

• feat(plugin): loadPluginServerLib + Phase 1D-prep (member-memo route via plugin loader) by @sdk-kr in #1281

• perf(ssr-cache): gzip 압축 저장 — pod heap 약 15MB 절감 by @sdk-kr in #1282

• perf(ssr): ssrCachePending 15s hard timeout by @sdk-kr in #1283

• perf(jwt-cache): MAX 50000 → 10000 defensive cap by @sdk-kr in #1284

• perf(api/themes): Cache-Control s-maxage=300 + swr=1800 by @sdk-kr in #1285

• fix(ci): staging deploy GHCR 로그인을 GITHUB_TOKEN 으로 전환 by @sdk-kr in #1294

• feat: multisite Phase 1 — Path D′ ConfigSiteResolver by @sdk-kr in #1286

• feat(admin): plugin admin.menu 항목 자동 사이드바 추가 (M1 A2 Sprint 1) by @sdk-kr in #1293

• feat: Angple Sites builder frontend PoC (M1 A1 Day 3-4) by @sdk-kr in #1295

• fix(ci): E2E 환경 — Redis service + DB/BACKEND env 명시 by @sdk-kr in #1297

• feat(admin): heap snapshot 다운로드 endpoint by @sdk-kr in #1296

• fix: 레딧 임베드 redirect 미처리 (#12044) by @sdk-kr in #1299

• perf(ssr): 301/308 redirect 응답 CDN 24h 캐시 by @sdk-kr in #1300

• perf(cache): TieredCache L1 maxSize 축소 (재제출) by @sdk-kr in #1301

• fix(hooks): withTimeout setTimeout 누수 — clearTimeout 추가 by @sdk-kr in #1302

• fix(level): LevelBadge stale as_level 표시 문제 (#12046) by @sdk-kr in #1303

• fix(damoang-banner): 자체 광고 배너 새 탭으로 열기 (다모앙 이탈 방지) by @sdk-kr in #1304

• fix(post-delete): 삭제 실패 시 백엔드 사유 노출 (#12098) by @sdk-kr in #1306

• fix(csp): frame-src 에 embed.reddit.com 허용 (#12090) by @sdk-kr in #1305

• fix(post-detail): 모바일 가로 스크롤 overflow-x 폴백 (#12096) by @sdk-kr in #1307

• fix(editor): YouTube URL 붙여넣기 명시 임베드 (#12065) by @sdk-kr in #1308

• fix(recommended): 메인화면 공감글 글씨 크기 설정이 적용되도록 CSS 변수 변경 by @sdk-kr in #1309

• perf(avatar): 게시판 리스트 Avatar size="list" — 64px variant by @sdk-kr in #1311

• fix(my): 모바일 마이페이지 탭 row 가로 스크롤 방지 by @sdk-kr in #1310

• feat(bluesky): handle → DID resolver (PR-B1 of #12050) by @sdk-kr in #1312