diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 153677e9a..6c235f0de 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden runner
-        uses: step-security/harden-runner@b09bb98e06d4d774595224525879c09bc6e98c40 # v2.20.1
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
         with:
           egress-policy: audit
 
@@ -47,7 +47,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden runner
-        uses: step-security/harden-runner@b09bb98e06d4d774595224525879c09bc6e98c40 # v2.20.1
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
         with:
           egress-policy: audit
 
diff --git a/.jules/palette.md b/.jules/palette.md
index bd0f73248..dcf81fa94 100644
--- a/.jules/palette.md
+++ b/.jules/palette.md
@@ -57,3 +57,6 @@
 ## 2026-07-30 - Add window.confirm for destructive actions
 **Learning:** Destructive actions like deleting groups and edge relationships previously occurred immediately without user confirmation.
 **Action:** Always wrap delete operations with window.confirm() dialogs and ensure corresponding tests successfully mock window.confirm.
+## 2026-08-01 - [ARIA-disabled for Better Button Accessibility]
+**Learning:** Native `disabled` attributes on HTML buttons completely remove them from the tab focus order and swallow mouse hover events, making them invisible to keyboard navigation and preventing tooltips or `aria-describedby` hints from being read by screen readers.
+**Action:** Instead of using native `disabled`, use `aria-disabled="true"`, supply an `onClick` guard to call `e.preventDefault()`, and use CSS opacity/cursor styles for visual indication. This ensures the button remains in the tab order and provides context as to *why* it is disabled.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35613431a..679a62024 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,6 @@
 # Changelog
 
 ## Unreleased
-- [BE] 🔒 **Cryptography 50+ 보안 경계 갱신**: `pyproject.toml`과 두 hash-locked 요구사항 파일을 동일한 Cryptography 50+ 해석으로 정합화하여 PKCS#7 오류·타이밍 구분으로 인한 CVE-2026-69247 완화를 실제 설치·검증 경로에 반영했습니다.
-- [FE] ⚡ **검색 노드 참조 안정화 및 순차 스냅샷 폴링**: 같은 정규화 검색어와 원본 테이블 데이터에는 장식된 `node.data` 참조를 재사용하여 드래그 중 불필요한 하위 렌더링과 할당을 줄입니다. 스냅샷 폴링은 이전 요청이 끝난 뒤에만 다음 요청을 예약하며, 선택 변경·언마운트 후 도착한 오래된 성공 또는 실패 응답을 무시합니다.
 - [BE] 🔒 **공유 export 전 경로 redaction**: 공개 share의 SQL / index-design / reversing-spec export에서 코멘트·`example_value`를 제거합니다. 단위 테스트로 누출을 차단합니다.
 - [BE] 🛠️ **함수 인덱스 중복 오탐 수정**: `lower(email)` 등 expression index를 평문 컬럼 인덱스의 중복으로 잘못 판단하지 않도록 괄호 파서를 강화했습니다.
 - [Docs] README를 상용 기준 기능 설명으로 갱신 (MVP skeleton 표현 제거, share redaction·diff/export 반영).
diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index b2d47dd2a..ed076d534 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -20,7 +20,7 @@ dependencies = [
   "asyncpg>=0.31.0",
   "psycopg[binary]>=3.3.4",
   "alembic>=1.18.5",
-  "cryptography>=50.0.0",
+  "cryptography>=46.0.7",
   "httpx>=0.28.1",
   "python-jose[cryptography]>=3.5.0",
   "redis>=5.0.0",
diff --git a/backend/requirements-dev.lock b/backend/requirements-dev.lock
index 94ebb2dbe..a5a77b940 100644
--- a/backend/requirements-dev.lock
+++ b/backend/requirements-dev.lock
@@ -544,53 +544,53 @@ coverage==7.15.2 \
     --hash=sha256:f653e5d7248c1191ec988a85c72edeab46c3ff44f90639a4ed4874ec0be90243 \
     --hash=sha256:fe41909c9515c3bfdb5f02c4d1f857dba322d9a9a1178069b91eea77889df63a
     # via pytest-cov
-cryptography==50.0.0 \
-    --hash=sha256:031e2d5dd4bb9caa3ca9c82e5a197fd8ae680232cee62603d1a813f3f07e3d03 \
-    --hash=sha256:06a32a980526a6ab9a4b9bf8f7385800791e2bb960903cb6b530e4817509a3b7 \
-    --hash=sha256:07479a1cb08219ab719147e742e76090c9c773321959bb94946fffdd397a6437 \
-    --hash=sha256:07949c449a1abcf60d1ee6e88956d89404c7df3c8258f46589e912988e551987 \
-    --hash=sha256:105110f43a471dbd0060b9c9516cb8a6a79233631a04cc2ba16f28323ac6e025 \
-    --hash=sha256:11b74db56cdbe3cdee6e3f6982ecb70334fa10dce99ed58bf7894aaaa3b2a037 \
-    --hash=sha256:12b9c6996425c76ea6c457ace4f3073e715b8c545add07cd1a8f3a4f90691269 \
-    --hash=sha256:1489e263a8048bb8b6a8bac662eb2d402ea5d2b7b4699b72f385f1e2772db105 \
-    --hash=sha256:19736989797678c6af1e55cd49055cdbcb55d8f6b5583ac5335f933aba9101dc \
-    --hash=sha256:1b4a266766514614f8aa60416e71f2fc6e575d36e7bdc90f644fadb2f4b75b95 \
-    --hash=sha256:2a8183b489dc1f7f80f135780fadc1108f14b31b8a40411c7a5b17425f65f28b \
-    --hash=sha256:37fdb0d0111f1e2ff07139dfb79f1b49531f8e213c46f1163dd7642979b58c47 \
-    --hash=sha256:3f5735ffe4996d28b809371756219f5354864902a3b9e7c0b9ee87041209fc9c \
-    --hash=sha256:49e7d93abdbd2990caced757e5fade25302f719c3c8fb6e6fff2dde98999fc41 \
-    --hash=sha256:5e34edd123674534acd70147f0ca331eaa2c74e6325fb2028c886aa26ba0b68c \
-    --hash=sha256:62598a8a57f815db4c6259a4e97d857dab56697e7de8e8ab02352ab74da1995d \
-    --hash=sha256:65c2c3add92b45fd0709db8594536aea39c2a67af0e27ffcf049c498501140b7 \
-    --hash=sha256:6ba6a53445bd3cfa809ef3ef5f1589aa6ba08784a1d962bf47d0940e871dab1c \
-    --hash=sha256:6e7d61120573a7f2cd94cc095f9e81f6967c61ccdf194285aa143ecec8e0b708 \
-    --hash=sha256:7cec5b856506da6defb290f30c9ee687d5f5e8cb0bd3f6459dde43b0b4fa40ef \
-    --hash=sha256:80b63928fa35083b33966ce1efb70e5b9607181e49dcd1c22c8c005e319f667f \
-    --hash=sha256:82148ec5bddac30b51a5b3c1945075f896fa022cb93f8e4a01e9f6ee95292c5f \
-    --hash=sha256:828743d939e9629bc267b8e2d08d8bb67cd4319c771a33d4b18b22dd8fb7440a \
-    --hash=sha256:8d89f3976b10b4ce31118de72329025f70d2c6ead14a8217c5514dd2c6d5a78f \
-    --hash=sha256:8eb5e1172eb569ea8a872796576e6a67c276351728b6455d5beb01242b027c6a \
-    --hash=sha256:900131fafd8aead39ac7dd3a7e833be754c17a95cfd91221636949fe4eb0aa8a \
-    --hash=sha256:910d11e1a385c654bf738bf3e6b8e6ed5de0f5610fcae2be9e5b398d8081d20e \
-    --hash=sha256:910e1d2668e7de9648f2bcee30e180db2a6b15c30f887d7c4c93ddf96e3992e3 \
-    --hash=sha256:9aa87839c383bdbab6ef865787a1fb877af8dd03464c4400322726feaaadfc6d \
-    --hash=sha256:a1b30560f2acc95aa8b2e06e716a13dbfc97314747b80d9707e307f77b40d6b3 \
-    --hash=sha256:a91296cb61e8df6f86d0c19cc4068228da256bf59bf86049fbd821084565327f \
-    --hash=sha256:b42a28c1844fd9de8f3f7d540e36b66f3a9c83fceac7170ebc7a6a19edd9dcae \
-    --hash=sha256:bd1c592e4d5974f0d08d4888e432157adba757c66da0246918e43677fafa2d30 \
-    --hash=sha256:c87f62a3d3b9888ed0fdde100ec06aa61ca9cd44bad9057d1dff9a516b5f5bb9 \
-    --hash=sha256:c99c003e088647b8a5b7c145d6f78c335f6348332b62e142d411c4b63d1460b9 \
-    --hash=sha256:ccdc4a71a4dabae05de219404f9f4abc38e3b58422177ff93d0da05967dafa07 \
-    --hash=sha256:d24fead1d4d076e1bfb006dcec392074a3cd8d7b4fc8a595aa64073b2b7a96ba \
-    --hash=sha256:d58c3db7cd6eed54e6c06744db55456b65ebd7492ddeae9c1e93cfca7aa857d3 \
-    --hash=sha256:d764dcf130c428ef66786f866dd750f53182bc608813489915e9fc106bb0c82f \
-    --hash=sha256:df2a58a472f332225671c35b0a830208b86d004f82baa8530fa3782c85646533 \
-    --hash=sha256:e722f16708d854fe924790e051061f6704a472c3bac347b6fd88033ea8dd0dc5 \
-    --hash=sha256:ecfed7367f965a0328cfbdd70da860f15441f002f613185668c6e6ebf5a0ac11 \
-    --hash=sha256:eeac2acb5a20ed25e0ad6d1df9891a520b78b404266b6d11778f25d5d691a6c9 \
-    --hash=sha256:f59e38625469987d7ef6d495323c55e7db6c212eaf6112267e0d3b565a2e9c9f \
-    --hash=sha256:f89831ef99dd7dd169ab06d63a831adb9e20a87aac6d380266bbda5823349169 \
-    --hash=sha256:fd9192b7b70c573d7f214eb1ae35e00d359f6f5e4b27c7e21e30de1fc6204645
+cryptography==49.0.0 \
+    --hash=sha256:026ac7423e6fa66872d3bf889be5974507da3944f866f704fa200eadacd00001 \
+    --hash=sha256:07cab27cc7b7e0fd28e5e26bb9eeedde5c135c868b46de4a27845abe94af6122 \
+    --hash=sha256:084ef1af862eb07ec46d25f68689f2102a9fc0e05ce7b80f14f5fe51e4eef0f6 \
+    --hash=sha256:0b82e28ee398a386f0807bba7884d30f25218855690f45115831bcce5d90822c \
+    --hash=sha256:0e959b578856a3924bc0cbb710fc12c387b9412a951389f3ca61704a9e25f325 \
+    --hash=sha256:0f21641cf4b30fca7aee061ced0ec7ad7b073518088b7c9969a297c0ae796c69 \
+    --hash=sha256:196ecd6a36e4e9aa10270393bb98d8df88fccee0bf1e5128b91ae4eb4375896d \
+    --hash=sha256:2400ef9c9e2299a25614eb1dea3db54a69b1349efd043bfac9c67630d136df36 \
+    --hash=sha256:28d8b15e6275f12c8a207dc309dfa957903c927d08d0cc937ee3f63f200693cc \
+    --hash=sha256:2afe9051da7ae7bd5905da5a949280c7d2bb75682e188f650a9d0f2756b834c6 \
+    --hash=sha256:2eda353d8a27bcbcaa4cbed18994a74ab4d19a2ca897db188ea269ab9b71419b \
+    --hash=sha256:32703d93296f5c1f4b53349ad3a250c2cae0fdecd3a3dd5d47e616d8d616af27 \
+    --hash=sha256:33cd0565932807baddb67b96dbee92f2c374b5c89dee09fd74079aeb8c8dba61 \
+    --hash=sha256:35b151772baff2c74cba7fa290ceaff4c3b11c0c881eb93eb5dbc05a7cfbba18 \
+    --hash=sha256:36d1709f992593689b45bda411498d62c6e365f2ca00b84657d4dadd24de16db \
+    --hash=sha256:42b0684e0e40cf26122427802486f6d93aea593612603a94fbf260c7eb1e9c1b \
+    --hash=sha256:4ae387c9cb68ea569ca17e490d66d8142b81c3cc814bf179974b7d146e490bbb \
+    --hash=sha256:53ecee2e23f7169b6117e99fc8a944e5e50f79e69758a83b52a00cb98ab2b2d2 \
+    --hash=sha256:66ec79c3904820572d7e987abdf304281f141d37ad9a489b8e97066e7b9b6459 \
+    --hash=sha256:67e1d20ad9ef3a563c59ef22e7a8a0b8210bd26604369ea4a30a7c66aefe504e \
+    --hash=sha256:6f2debedf9ca60cf1d5bd466475638af5130f89965605cd818484d19987d3a21 \
+    --hash=sha256:6fc361c34fb6aac015ce19435876635e5c6d21db31998b0920f675f131e043b8 \
+    --hash=sha256:73a205dce83953d131a4aa1e0fd917a2fd1c5b1eef251e9d7152efefcbf5caf7 \
+    --hash=sha256:7abcee80084cda3f7691f3eb1ce480d8df49cec637b429aa35986c1de71738aa \
+    --hash=sha256:8c25ceb16df5b9435f3f6a9829204985b0e0cbee3b48aacd432c7d2c850b44d9 \
+    --hash=sha256:966fe0e9c67490071f14c0d2b1cb2dfb3023c5ce39457343931415f08382f2db \
+    --hash=sha256:9e82dcc8e56052715fb18b2429e3bca4823b1629136a2084fc45a9a5cecb9b64 \
+    --hash=sha256:b20133d204d2bb56ba047642199603876c872026ca53e79c35b83772ab2cc505 \
+    --hash=sha256:b39efa323140595abd3ecca8529d321ae50f55f3aa3ba9cc81ea56a6011953d5 \
+    --hash=sha256:b47db11c2c3525083296069b98ac5221907455e989ae0c2e3008bde851921615 \
+    --hash=sha256:b87e65d263b3e5d3bb92a57e2a6638e2f31110fa7aa890c7b2dbba42248d0a3f \
+    --hash=sha256:b970c6da94d5bb18629db453d14f2a1300f6bf59b61e9b82377931ef95504866 \
+    --hash=sha256:be9fcb48a55f023493482827d4f459bd263cc20efde64f204b97c123201850c6 \
+    --hash=sha256:c2bc30226390d60ea19d9f82b19db005fe0452154a23c1c410c12ea801e43561 \
+    --hash=sha256:c83782480a4a9da4d0feb51950131ba32e12e70813848b3343f6e18c28a66838 \
+    --hash=sha256:cbc77da8c523d5abd028635ba850a6966fcee2c82e2bf65a41d1d8afe0f98be9 \
+    --hash=sha256:ccac2bfebc306b862133e3bb71f3f6ee8bb525240089b2d952e4144b3a6d5da7 \
+    --hash=sha256:d0527ce944105f257f605a827d6ebead966c752038b6e8656abb9c5edee6fc68 \
+    --hash=sha256:d8ecde755e2e91bf773fc94e8c9d730cd7f2007004cb492263a794ec3899a1c8 \
+    --hash=sha256:e3fb64c420688e5319ae25113a354015abbd8dffbfbc41781a1ea66fc7622ac3 \
+    --hash=sha256:e5dfc1e64de5677cec922ffa8da89c546d0415bf6efdf081842e5d44c84e1f0e \
+    --hash=sha256:ec5e529fb80935c94fe7b729f9972b50e351a0e6b50aa294fd5cabb109fcc29a \
+    --hash=sha256:f37d847238971164fdbc68ade6f6574aecc9c0af714190e2083429ff68f4ce9d \
+    --hash=sha256:f78ff2c9ed8dc2d036b0f4d640e22522213d047c1b14e61205a7e55c80a494d4 \
+    --hash=sha256:f89660a348f4f78a92366240a61404e337586ef7f5909a2fef59ca88ef505493 \
+    --hash=sha256:fc1e275c2f1d97b1a6450b8b0ea3ebfa6e087a611c2b26cb2404d48588abab7b
     # via
     #   pg-erd-cloud-backend (backend/pyproject.toml)
     #   python-jose
diff --git a/backend/requirements.lock b/backend/requirements.lock
index 6b0a1ef79..a333302c7 100644
--- a/backend/requirements.lock
+++ b/backend/requirements.lock
@@ -405,53 +405,53 @@ charset-normalizer==3.4.9 \
     --hash=sha256:fa36ec09ef71d158186bc79e359ff5fdd6e7996fe8ab638f00d6b93139ba4fcf \
     --hash=sha256:fe2c7201c642b7c308f1675355ad7ff7b66acfe3541625efe5a3ad38f29d6115
     # via requests
-cryptography==50.0.0 \
-    --hash=sha256:031e2d5dd4bb9caa3ca9c82e5a197fd8ae680232cee62603d1a813f3f07e3d03 \
-    --hash=sha256:06a32a980526a6ab9a4b9bf8f7385800791e2bb960903cb6b530e4817509a3b7 \
-    --hash=sha256:07479a1cb08219ab719147e742e76090c9c773321959bb94946fffdd397a6437 \
-    --hash=sha256:07949c449a1abcf60d1ee6e88956d89404c7df3c8258f46589e912988e551987 \
-    --hash=sha256:105110f43a471dbd0060b9c9516cb8a6a79233631a04cc2ba16f28323ac6e025 \
-    --hash=sha256:11b74db56cdbe3cdee6e3f6982ecb70334fa10dce99ed58bf7894aaaa3b2a037 \
-    --hash=sha256:12b9c6996425c76ea6c457ace4f3073e715b8c545add07cd1a8f3a4f90691269 \
-    --hash=sha256:1489e263a8048bb8b6a8bac662eb2d402ea5d2b7b4699b72f385f1e2772db105 \
-    --hash=sha256:19736989797678c6af1e55cd49055cdbcb55d8f6b5583ac5335f933aba9101dc \
-    --hash=sha256:1b4a266766514614f8aa60416e71f2fc6e575d36e7bdc90f644fadb2f4b75b95 \
-    --hash=sha256:2a8183b489dc1f7f80f135780fadc1108f14b31b8a40411c7a5b17425f65f28b \
-    --hash=sha256:37fdb0d0111f1e2ff07139dfb79f1b49531f8e213c46f1163dd7642979b58c47 \
-    --hash=sha256:3f5735ffe4996d28b809371756219f5354864902a3b9e7c0b9ee87041209fc9c \
-    --hash=sha256:49e7d93abdbd2990caced757e5fade25302f719c3c8fb6e6fff2dde98999fc41 \
-    --hash=sha256:5e34edd123674534acd70147f0ca331eaa2c74e6325fb2028c886aa26ba0b68c \
-    --hash=sha256:62598a8a57f815db4c6259a4e97d857dab56697e7de8e8ab02352ab74da1995d \
-    --hash=sha256:65c2c3add92b45fd0709db8594536aea39c2a67af0e27ffcf049c498501140b7 \
-    --hash=sha256:6ba6a53445bd3cfa809ef3ef5f1589aa6ba08784a1d962bf47d0940e871dab1c \
-    --hash=sha256:6e7d61120573a7f2cd94cc095f9e81f6967c61ccdf194285aa143ecec8e0b708 \
-    --hash=sha256:7cec5b856506da6defb290f30c9ee687d5f5e8cb0bd3f6459dde43b0b4fa40ef \
-    --hash=sha256:80b63928fa35083b33966ce1efb70e5b9607181e49dcd1c22c8c005e319f667f \
-    --hash=sha256:82148ec5bddac30b51a5b3c1945075f896fa022cb93f8e4a01e9f6ee95292c5f \
-    --hash=sha256:828743d939e9629bc267b8e2d08d8bb67cd4319c771a33d4b18b22dd8fb7440a \
-    --hash=sha256:8d89f3976b10b4ce31118de72329025f70d2c6ead14a8217c5514dd2c6d5a78f \
-    --hash=sha256:8eb5e1172eb569ea8a872796576e6a67c276351728b6455d5beb01242b027c6a \
-    --hash=sha256:900131fafd8aead39ac7dd3a7e833be754c17a95cfd91221636949fe4eb0aa8a \
-    --hash=sha256:910d11e1a385c654bf738bf3e6b8e6ed5de0f5610fcae2be9e5b398d8081d20e \
-    --hash=sha256:910e1d2668e7de9648f2bcee30e180db2a6b15c30f887d7c4c93ddf96e3992e3 \
-    --hash=sha256:9aa87839c383bdbab6ef865787a1fb877af8dd03464c4400322726feaaadfc6d \
-    --hash=sha256:a1b30560f2acc95aa8b2e06e716a13dbfc97314747b80d9707e307f77b40d6b3 \
-    --hash=sha256:a91296cb61e8df6f86d0c19cc4068228da256bf59bf86049fbd821084565327f \
-    --hash=sha256:b42a28c1844fd9de8f3f7d540e36b66f3a9c83fceac7170ebc7a6a19edd9dcae \
-    --hash=sha256:bd1c592e4d5974f0d08d4888e432157adba757c66da0246918e43677fafa2d30 \
-    --hash=sha256:c87f62a3d3b9888ed0fdde100ec06aa61ca9cd44bad9057d1dff9a516b5f5bb9 \
-    --hash=sha256:c99c003e088647b8a5b7c145d6f78c335f6348332b62e142d411c4b63d1460b9 \
-    --hash=sha256:ccdc4a71a4dabae05de219404f9f4abc38e3b58422177ff93d0da05967dafa07 \
-    --hash=sha256:d24fead1d4d076e1bfb006dcec392074a3cd8d7b4fc8a595aa64073b2b7a96ba \
-    --hash=sha256:d58c3db7cd6eed54e6c06744db55456b65ebd7492ddeae9c1e93cfca7aa857d3 \
-    --hash=sha256:d764dcf130c428ef66786f866dd750f53182bc608813489915e9fc106bb0c82f \
-    --hash=sha256:df2a58a472f332225671c35b0a830208b86d004f82baa8530fa3782c85646533 \
-    --hash=sha256:e722f16708d854fe924790e051061f6704a472c3bac347b6fd88033ea8dd0dc5 \
-    --hash=sha256:ecfed7367f965a0328cfbdd70da860f15441f002f613185668c6e6ebf5a0ac11 \
-    --hash=sha256:eeac2acb5a20ed25e0ad6d1df9891a520b78b404266b6d11778f25d5d691a6c9 \
-    --hash=sha256:f59e38625469987d7ef6d495323c55e7db6c212eaf6112267e0d3b565a2e9c9f \
-    --hash=sha256:f89831ef99dd7dd169ab06d63a831adb9e20a87aac6d380266bbda5823349169 \
-    --hash=sha256:fd9192b7b70c573d7f214eb1ae35e00d359f6f5e4b27c7e21e30de1fc6204645
+cryptography==49.0.0 \
+    --hash=sha256:026ac7423e6fa66872d3bf889be5974507da3944f866f704fa200eadacd00001 \
+    --hash=sha256:07cab27cc7b7e0fd28e5e26bb9eeedde5c135c868b46de4a27845abe94af6122 \
+    --hash=sha256:084ef1af862eb07ec46d25f68689f2102a9fc0e05ce7b80f14f5fe51e4eef0f6 \
+    --hash=sha256:0b82e28ee398a386f0807bba7884d30f25218855690f45115831bcce5d90822c \
+    --hash=sha256:0e959b578856a3924bc0cbb710fc12c387b9412a951389f3ca61704a9e25f325 \
+    --hash=sha256:0f21641cf4b30fca7aee061ced0ec7ad7b073518088b7c9969a297c0ae796c69 \
+    --hash=sha256:196ecd6a36e4e9aa10270393bb98d8df88fccee0bf1e5128b91ae4eb4375896d \
+    --hash=sha256:2400ef9c9e2299a25614eb1dea3db54a69b1349efd043bfac9c67630d136df36 \
+    --hash=sha256:28d8b15e6275f12c8a207dc309dfa957903c927d08d0cc937ee3f63f200693cc \
+    --hash=sha256:2afe9051da7ae7bd5905da5a949280c7d2bb75682e188f650a9d0f2756b834c6 \
+    --hash=sha256:2eda353d8a27bcbcaa4cbed18994a74ab4d19a2ca897db188ea269ab9b71419b \
+    --hash=sha256:32703d93296f5c1f4b53349ad3a250c2cae0fdecd3a3dd5d47e616d8d616af27 \
+    --hash=sha256:33cd0565932807baddb67b96dbee92f2c374b5c89dee09fd74079aeb8c8dba61 \
+    --hash=sha256:35b151772baff2c74cba7fa290ceaff4c3b11c0c881eb93eb5dbc05a7cfbba18 \
+    --hash=sha256:36d1709f992593689b45bda411498d62c6e365f2ca00b84657d4dadd24de16db \
+    --hash=sha256:42b0684e0e40cf26122427802486f6d93aea593612603a94fbf260c7eb1e9c1b \
+    --hash=sha256:4ae387c9cb68ea569ca17e490d66d8142b81c3cc814bf179974b7d146e490bbb \
+    --hash=sha256:53ecee2e23f7169b6117e99fc8a944e5e50f79e69758a83b52a00cb98ab2b2d2 \
+    --hash=sha256:66ec79c3904820572d7e987abdf304281f141d37ad9a489b8e97066e7b9b6459 \
+    --hash=sha256:67e1d20ad9ef3a563c59ef22e7a8a0b8210bd26604369ea4a30a7c66aefe504e \
+    --hash=sha256:6f2debedf9ca60cf1d5bd466475638af5130f89965605cd818484d19987d3a21 \
+    --hash=sha256:6fc361c34fb6aac015ce19435876635e5c6d21db31998b0920f675f131e043b8 \
+    --hash=sha256:73a205dce83953d131a4aa1e0fd917a2fd1c5b1eef251e9d7152efefcbf5caf7 \
+    --hash=sha256:7abcee80084cda3f7691f3eb1ce480d8df49cec637b429aa35986c1de71738aa \
+    --hash=sha256:8c25ceb16df5b9435f3f6a9829204985b0e0cbee3b48aacd432c7d2c850b44d9 \
+    --hash=sha256:966fe0e9c67490071f14c0d2b1cb2dfb3023c5ce39457343931415f08382f2db \
+    --hash=sha256:9e82dcc8e56052715fb18b2429e3bca4823b1629136a2084fc45a9a5cecb9b64 \
+    --hash=sha256:b20133d204d2bb56ba047642199603876c872026ca53e79c35b83772ab2cc505 \
+    --hash=sha256:b39efa323140595abd3ecca8529d321ae50f55f3aa3ba9cc81ea56a6011953d5 \
+    --hash=sha256:b47db11c2c3525083296069b98ac5221907455e989ae0c2e3008bde851921615 \
+    --hash=sha256:b87e65d263b3e5d3bb92a57e2a6638e2f31110fa7aa890c7b2dbba42248d0a3f \
+    --hash=sha256:b970c6da94d5bb18629db453d14f2a1300f6bf59b61e9b82377931ef95504866 \
+    --hash=sha256:be9fcb48a55f023493482827d4f459bd263cc20efde64f204b97c123201850c6 \
+    --hash=sha256:c2bc30226390d60ea19d9f82b19db005fe0452154a23c1c410c12ea801e43561 \
+    --hash=sha256:c83782480a4a9da4d0feb51950131ba32e12e70813848b3343f6e18c28a66838 \
+    --hash=sha256:cbc77da8c523d5abd028635ba850a6966fcee2c82e2bf65a41d1d8afe0f98be9 \
+    --hash=sha256:ccac2bfebc306b862133e3bb71f3f6ee8bb525240089b2d952e4144b3a6d5da7 \
+    --hash=sha256:d0527ce944105f257f605a827d6ebead966c752038b6e8656abb9c5edee6fc68 \
+    --hash=sha256:d8ecde755e2e91bf773fc94e8c9d730cd7f2007004cb492263a794ec3899a1c8 \
+    --hash=sha256:e3fb64c420688e5319ae25113a354015abbd8dffbfbc41781a1ea66fc7622ac3 \
+    --hash=sha256:e5dfc1e64de5677cec922ffa8da89c546d0415bf6efdf081842e5d44c84e1f0e \
+    --hash=sha256:ec5e529fb80935c94fe7b729f9972b50e351a0e6b50aa294fd5cabb109fcc29a \
+    --hash=sha256:f37d847238971164fdbc68ade6f6574aecc9c0af714190e2083429ff68f4ce9d \
+    --hash=sha256:f78ff2c9ed8dc2d036b0f4d640e22522213d047c1b14e61205a7e55c80a494d4 \
+    --hash=sha256:f89660a348f4f78a92366240a61404e337586ef7f5909a2fef59ca88ef505493 \
+    --hash=sha256:fc1e275c2f1d97b1a6450b8b0ea3ebfa6e087a611c2b26cb2404d48588abab7b
     # via
     #   pg-erd-cloud-backend (backend/pyproject.toml)
     #   python-jose
diff --git a/docs/doctoring/search-identity-and-sequential-polling.md b/docs/doctoring/search-identity-and-sequential-polling.md
deleted file mode 100644
index 0e0ee1900..000000000
--- a/docs/doctoring/search-identity-and-sequential-polling.md
+++ /dev/null
@@ -1,39 +0,0 @@
-# Search identity and sequential snapshot polling
-
-## Decision
-
-The ERD canvas treats the immutable `TableNodeData` object as the identity of the source table payload. While a normalized search query is active, a query-scoped `WeakMap<TableNodeData, TableNodeData>` stores the derived highlight/dim payload. Re-rendering with the same source object reuses the exact derived reference; changing the normalized query replaces the cache, and replacing the source payload produces a new derived object.
-
-Snapshot status polling is one sequential asynchronous process per active `(selectedProjectId, snapshotId)` effect. The first request starts immediately. A non-terminal response schedules one `setTimeout` only after the request completes. Terminal states stop polling and may refresh the snapshot list. Cleanup marks the process obsolete and clears the pending timeout, so late success, refresh, or rejection continuations cannot update the current view.
-
-## Why
-
-React Flow can emit frequent position-only node updates. Reallocating every derived `node.data` object during those updates defeats reference-sensitive memoization below the canvas and creates garbage unrelated to actual table-content changes. `WeakMap` keys use object identity and do not keep otherwise unreachable key objects alive, which fits a cache whose lifetime follows the source payload.
-
-A fixed `setInterval` can start another request while the prior request is unresolved. Network responses are not guaranteed to complete in issue order, so an older non-terminal result can overwrite a newer terminal result. React's effect guidance explicitly recommends cleanup-scoped invalidation for manually fetched data because responses may arrive out of order. Completion-scheduled `setTimeout` polling additionally guarantees at most one in-flight status request per effect generation.
-
-## Invariants
-
-- The source `node.data` object is never mutated with search-only state.
-- Equivalent normalized queries and position-only updates reuse the derived data reference.
-- A changed query or changed source data object yields a fresh derived reference.
-- At most one `getSnapshot` call is in flight for one effect generation.
-- `succeeded`, `failed`, and `not_found` stop future status requests.
-- Dependency change or unmount invalidates all pending continuations before they can publish snapshot, list, or error state.
-- Polling errors remain visible only for the still-current snapshot process.
-
-## Verification
-
-`frontend/src/App.searchPolling.test.tsx` observes the `ReactFlow` node payload rather than implementation internals. It asserts reference identity with `toBe`, drives a position-only update and a source-data replacement, exercises reversed response order, rejects a superseded request with sensitive detail, and uses controlled timers to prove non-overlap and terminal shutdown. Repository CI remains authoritative for npm-only type checking, complete statement/branch/function/line coverage, and the production build.
-
-## Operational monitoring and rollback
-
-Monitor snapshot-status request concurrency, terminal-to-render latency, stale-response suppression, browser memory growth during long search/drag sessions, and frontend error rates. Roll back by restoring the prior uncached derivation and interval loop only if a verified regression requires it; doing so reopens the documented allocation and race risks and therefore requires a replacement isolation design and regression evidence.
-
-## References
-
-MDN Web Docs contributors. (2026). *WeakMap*. Mozilla. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap
-
-React Team. (n.d.). *useEffect*. React. Retrieved August 7, 2026, from https://react.dev/reference/react/useEffect
-
-Web Hypertext Application Technology Working Group. (2026, July 13). *HTML Standard: Timers*. https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#timers
diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index 3f27aa73b..3e14ba934 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:26.7.0-alpine@sha256:aadf416b2cdce311a8811ba3f0608a61b77dbf997500e2eafe781b51f6a0b019
+FROM node:26.5.0-alpine@sha256:e88a35be04478413b7c71c455cd9865de9b9360e1f43456be5951032d7ac1a66
 
 WORKDIR /app
 
diff --git a/frontend/Dockerfile.prod b/frontend/Dockerfile.prod
index 21b786f5b..81957d698 100644
--- a/frontend/Dockerfile.prod
+++ b/frontend/Dockerfile.prod
@@ -1,4 +1,4 @@
-FROM node:26.7.0-alpine@sha256:aadf416b2cdce311a8811ba3f0608a61b77dbf997500e2eafe781b51f6a0b019 AS build
+FROM node:26.5.0-alpine@sha256:e88a35be04478413b7c71c455cd9865de9b9360e1f43456be5951032d7ac1a66 AS build
 
 WORKDIR /app
 RUN chown -R node:node /app
@@ -9,7 +9,7 @@ RUN npm ci
 COPY --chown=node:node . /app
 RUN npm run build
 
-FROM node:26.7.0-alpine@sha256:aadf416b2cdce311a8811ba3f0608a61b77dbf997500e2eafe781b51f6a0b019
+FROM node:26.5.0-alpine@sha256:e88a35be04478413b7c71c455cd9865de9b9360e1f43456be5951032d7ac1a66
 
 WORKDIR /app
 
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 2049d498a..6e6375902 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -8,22 +8,22 @@
       "name": "pg-erd-cloud-frontend",
       "version": "0.1.0",
       "dependencies": {
-        "@xyflow/react": "^12.11.3",
+        "@xyflow/react": "^12.11.1",
         "react": "^19.2.4",
-        "react-dom": "^19.2.8"
+        "react-dom": "^19.2.7"
       },
       "devDependencies": {
         "@testing-library/jest-dom": "^6.9.1",
         "@testing-library/react": "^16.3.2",
-        "@testing-library/user-event": "^14.6.4",
-        "@types/react": "^19.2.18",
-        "@types/react-dom": "^19.2.4",
+        "@testing-library/user-event": "^14.6.1",
+        "@types/react": "^19.2.10",
+        "@types/react-dom": "^19.2.3",
         "@vitest/coverage-v8": "^4.1.9",
         "fast-check": "^4.8.0",
-        "jsdom": "^30.0.1",
+        "jsdom": "^29.1.1",
         "typescript": "^6.0.3",
-        "vite": "^8.2.1",
-        "vitest": "^4.1.10"
+        "vite": "^8.1.0",
+        "vitest": "^4.1.9"
       },
       "engines": {
         "node": ">=26 <27"
@@ -37,38 +37,56 @@
       "license": "MIT"
     },
     "node_modules/@asamuzakjp/css-color": {
-      "version": "6.0.5",
-      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-6.0.5.tgz",
-      "integrity": "sha512-mbhpPMmnw/kwW19aRNmSUl1QzLbdGo1SCuE49BT98MNwqF6zaHb3o2owssFc/PEO/4t2UjqtCNwocuDtJornzA==",
+      "version": "5.1.11",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-5.1.11.tgz",
+      "integrity": "sha512-KVw6qIiCTUQhByfTd78h2yD1/00waTmm9uy/R7Ck/ctUyAPj+AEDLkQIdJW0T8+qGgj3j5bpNKK7Q3G+LedJWg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@csstools/css-calc": "^3.2.1",
-        "@csstools/css-color-parser": "^4.1.9",
+        "@asamuzakjp/generational-cache": "^1.0.1",
+        "@csstools/css-calc": "^3.2.0",
+        "@csstools/css-color-parser": "^4.1.0",
         "@csstools/css-parser-algorithms": "^4.0.0",
-        "@csstools/css-tokenizer": "^4.0.0",
-        "lru-cache": "^11.5.2"
+        "@csstools/css-tokenizer": "^4.0.0"
       },
       "engines": {
-        "node": "^22.13.0 || >=24.0.0"
+        "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
       }
     },
     "node_modules/@asamuzakjp/dom-selector": {
-      "version": "8.3.2",
-      "resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-8.3.2.tgz",
-      "integrity": "sha512-93Z1N+BQNXysodoicpOIyNh2drHfz/CTf9nnT0FEx72GJcIiwgydD7tGAr78j41LsYn3hlRn+LdGPuBLn1Bl8Q==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-7.1.1.tgz",
+      "integrity": "sha512-67RZDnYRc8H/8MLDgQCDE//zoqVFwajkepHZgmXrbwybzXOEwOWGPYGmALYl9J2DOLfFPPs6kKCqmbzV895hTQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
+        "@asamuzakjp/generational-cache": "^1.0.1",
+        "@asamuzakjp/nwsapi": "^2.3.9",
         "bidi-js": "^1.0.3",
         "css-tree": "^3.2.1",
-        "is-potential-custom-element-name": "^1.0.1",
-        "lru-cache": "^11.5.2"
+        "is-potential-custom-element-name": "^1.0.1"
       },
       "engines": {
-        "node": "^22.13.0 || >=24.0.0"
+        "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
       }
     },
+    "node_modules/@asamuzakjp/generational-cache": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/generational-cache/-/generational-cache-1.0.1.tgz",
+      "integrity": "sha512-wajfB8KqzMCN2KGNFdLkReeHncd0AslUSrvHVvvYWuU8ghncRJoA50kT3zP9MVL0+9g4/67H+cdvBskj9THPzg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
+      }
+    },
+    "node_modules/@asamuzakjp/nwsapi": {
+      "version": "2.3.9",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/nwsapi/-/nwsapi-2.3.9.tgz",
+      "integrity": "sha512-n8GuYSrI9bF7FFZ/SjhwevlHc8xaVlb/7HmHelnc/PZXBD2ZR49NnN9sMMuDdEGPeeRQ5d0hqlSlEpgCX3Wl0Q==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.29.7",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.7.tgz",
@@ -177,9 +195,9 @@
       }
     },
     "node_modules/@csstools/color-helpers": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/@csstools/color-helpers/-/color-helpers-6.1.0.tgz",
-      "integrity": "sha512-064IFJdjTfUqnjpCVpMOdbr8FLQBhinbZj6yRv2An2E41O/pLEXqfFRWqGq/SxlE5PEUYTlvWsG2r8MswAVvkg==",
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@csstools/color-helpers/-/color-helpers-6.0.2.tgz",
+      "integrity": "sha512-LMGQLS9EuADloEFkcTBR3BwV/CGHV7zyDxVRtVDTwdI2Ca4it0CCVTT9wCkxSgokjE5Ho41hEPgb8OEUwoXr6Q==",
       "dev": true,
       "funding": [
         {
@@ -197,9 +215,9 @@
       }
     },
     "node_modules/@csstools/css-calc": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/@csstools/css-calc/-/css-calc-3.3.0.tgz",
-      "integrity": "sha512-c5ihYsPkdG6JCkU2zTMm4+k6r7RXuGxtWYhu5DHMIiF1FHzrfmHL5so11AoFpUv/tu61xfcmT4AmKoFfMPoqdQ==",
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/@csstools/css-calc/-/css-calc-3.2.1.tgz",
+      "integrity": "sha512-DtdHlgXh5ZkA43cwBcAm+huzgJiwx3ZTWVjBs94kwz2xKqSimDA3lBgCjphYgwgVUMWatSM0pDd8TILB1yrVVg==",
       "dev": true,
       "funding": [
         {
@@ -221,9 +239,9 @@
       }
     },
     "node_modules/@csstools/css-color-parser": {
-      "version": "4.1.10",
-      "resolved": "https://registry.npmjs.org/@csstools/css-color-parser/-/css-color-parser-4.1.10.tgz",
-      "integrity": "sha512-UZhQLIUyJaaMepqehrCODwCg2KW25vFvLWBmqYFaPclYvvxzj/sG8LBOhBFCp11i9uE7t1EyS+RAoV9tztPFyw==",
+      "version": "4.1.8",
+      "resolved": "https://registry.npmjs.org/@csstools/css-color-parser/-/css-color-parser-4.1.8.tgz",
+      "integrity": "sha512-3chWb7PRLijpJpPIKkDxdu6IBeO5MrFACND57On0j8OPpc0wZibcGc3xAHrSEbOx/KDRyMHoIxGn0w1PhXMYHw==",
       "dev": true,
       "funding": [
         {
@@ -237,8 +255,8 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "@csstools/color-helpers": "^6.1.0",
-        "@csstools/css-calc": "^3.3.0"
+        "@csstools/color-helpers": "^6.0.2",
+        "@csstools/css-calc": "^3.2.1"
       },
       "engines": {
         "node": ">=20.19.0"
@@ -272,9 +290,9 @@
       }
     },
     "node_modules/@csstools/css-syntax-patches-for-csstree": {
-      "version": "1.1.7",
-      "resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.1.7.tgz",
-      "integrity": "sha512-fQ+05118eQS1cofO3aJpB5efgpBZMvIzwr/sbC8kDLVA5XLG8q1kJV5yzrUAI1f7lvhPnm8fgIjzFB8/O/5Dig==",
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+      "resolved": "https://registry.npmjs.org/@csstools/css-syntax-patches-for-csstree/-/css-syntax-patches-for-csstree-1.1.5.tgz",
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@@ -1780,16 +1762,13 @@
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-      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm64-musl/-/lightningcss-linux-arm64-musl-1.33.0.tgz",
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+      "resolved": "https://registry.npmjs.org/lightningcss-linux-arm64-musl/-/lightningcss-linux-arm64-musl-1.32.0.tgz",
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-      "libc": [
-        "musl"
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@@ -1804,16 +1783,13 @@
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+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-linux-x64-gnu/-/lightningcss-linux-x64-gnu-1.32.0.tgz",
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@@ -1828,16 +1804,13 @@
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-      "resolved": "https://registry.npmjs.org/lightningcss-linux-x64-musl/-/lightningcss-linux-x64-musl-1.33.0.tgz",
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+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-linux-x64-musl/-/lightningcss-linux-x64-musl-1.32.0.tgz",
+      "integrity": "sha512-bYcLp+Vb0awsiXg/80uCRezCYHNg1/l3mt0gzHnWV9XP1W5sKa5/TCdGWaR/zBM2PeF/HbsQv/j2URNOiVuxWg==",
       "cpu": [
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       "dev": true,
-      "libc": [
-        "musl"
-      ],
       "license": "MPL-2.0",
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@@ -1852,9 +1825,9 @@
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-      "version": "1.33.0",
-      "resolved": "https://registry.npmjs.org/lightningcss-win32-arm64-msvc/-/lightningcss-win32-arm64-msvc-1.33.0.tgz",
-      "integrity": "sha512-1K+MPfLSFVpphzpdbfkhlWk6wBrTObBzS2T6db10PNOZgR9GoVsAWzwNyuhUYYbTp23j+4RrncfujZ4uAzXvwA==",
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-win32-arm64-msvc/-/lightningcss-win32-arm64-msvc-1.32.0.tgz",
+      "integrity": "sha512-8SbC8BR40pS6baCM8sbtYDSwEVQd4JlFTOlaD3gWGHfThTcABnNDBda6eTZeqbofalIJhFx0qKzgHJmcPTnGdw==",
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         "arm64"
       ],
@@ -1873,9 +1846,9 @@
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     "node_modules/lightningcss-win32-x64-msvc": {
-      "version": "1.33.0",
-      "resolved": "https://registry.npmjs.org/lightningcss-win32-x64-msvc/-/lightningcss-win32-x64-msvc-1.33.0.tgz",
-      "integrity": "sha512-OlEICDx/Xl0FqSp4bry8zFnCvGpig3Gl4gCquvYwHuqJKEC1+n9NgDniFvqHGmMv1ZkqDJrDqKKSykTDX+ehuA==",
+      "version": "1.32.0",
+      "resolved": "https://registry.npmjs.org/lightningcss-win32-x64-msvc/-/lightningcss-win32-x64-msvc-1.32.0.tgz",
+      "integrity": "sha512-Amq9B/SoZYdDi1kFrojnoqPLxYhQ4Wo5XiL8EVJrVsB8ARoC1PWW6VGtT0WKCemjy8aC+louJnjS7U18x3b06Q==",
       "cpu": [
         "x64"
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@@ -1894,9 +1867,9 @@
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-      "version": "11.5.2",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.5.2.tgz",
-      "integrity": "sha512-4pfM1Ff0x50o0tQwb5ucw/RzNyD0/YJME6IVcStalZuMWxdt3sR3huStTtxz4PUmvZfRguvDejasvQ2kifR11g==",
+      "version": "11.5.1",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.5.1.tgz",
+      "integrity": "sha512-RPimw/7aMdv2oqRrxKwvZXcPfwBrn/JZ2xYcY9Hus/6LaS3VOAKVWKWgNLCFSiOm1ESXinjsDlidVU7JlnCN2A==",
       "dev": true,
       "license": "BlueOak-1.0.0",
       "engines": {
@@ -2030,9 +2003,9 @@
       "license": "ISC"
     },
     "node_modules/picomatch": {
-      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.5.tgz",
-      "integrity": "sha512-RvwwcruNjI1ncT5xRakeyS9Lf8lcItv34KD+aif+VH9kduAyfYBipGh12274xtenIPZ119/R9BdTBa8gAwSh0A==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
       "dev": true,
       "license": "MIT",
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@@ -2115,24 +2088,24 @@
       "license": "MIT"
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     "node_modules/react": {
-      "version": "19.2.8",
-      "resolved": "https://registry.npmjs.org/react/-/react-19.2.8.tgz",
-      "integrity": "sha512-PWaYA1L/q9u2u7xYQi+Y3L3Yfnie7XyLeaJICV1MGD6LprsBxcAqGjYyr0eY3p+QdsA+x/Irkt4Qif8D63+Sbw==",
+      "version": "19.2.7",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.2.7.tgz",
+      "integrity": "sha512-HNe9WslTbXmFK8o8cmwgAeJFSBvt1bPdHCVKtaaV+WlAN36mpT4hcRpwbf3fY56ar2oIXzsBpOAiIRHAdY0OlQ==",
       "license": "MIT",
       "engines": {
         "node": ">=0.10.0"
       }
     },
     "node_modules/react-dom": {
-      "version": "19.2.8",
-      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.8.tgz",
-      "integrity": "sha512-rVprimfGBG3DR+Tq0IQG2DT5PxKth1WIGDmj5yPmlzr4YBe7uyE+Du4oVqTDXZSHGGGXRtTJEGSSePyQCMBglQ==",
+      "version": "19.2.7",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-19.2.7.tgz",
+      "integrity": "sha512-t0BRVXvbiE/o20Hfw669rLbMCDWtYZLvmJigy2f0MxsXF+71pxhR3xOkspmsO8h3ZlNzyibAmtCa3l4lYKk6gQ==",
       "license": "MIT",
       "dependencies": {
         "scheduler": "^0.27.0"
       },
       "peerDependencies": {
-        "react": "^19.2.8"
+        "react": "^19.2.7"
       }
     },
     "node_modules/react-is": {
@@ -2168,13 +2141,13 @@
       }
     },
     "node_modules/rolldown": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/rolldown/-/rolldown-1.2.1.tgz",
-      "integrity": "sha512-4FKJhg8d3OiyQOA6Q1Q0hoFFpW9/OoX+VsHzpECsdsIZoOArrAK90gl59YK/Z+gnDel45bgJZK03ozH/9bCqEw==",
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/rolldown/-/rolldown-1.1.3.tgz",
+      "integrity": "sha512-1F1eEtUBtFvcGm1HQ9TiUIUHPQG7mSAODrhIzjxoUEFuo8OcbrGLiVLkevNgj84TE4lnHvnumwFjhJO5Eu135g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@oxc-project/types": "=0.142.0",
+        "@oxc-project/types": "=0.137.0",
         "@rolldown/pluginutils": "^1.0.0"
       },
       "bin": {
@@ -2184,21 +2157,21 @@
         "node": "^20.19.0 || >=22.12.0"
       },
       "optionalDependencies": {
-        "@rolldown/binding-android-arm64": "1.2.1",
-        "@rolldown/binding-darwin-arm64": "1.2.1",
-        "@rolldown/binding-darwin-x64": "1.2.1",
-        "@rolldown/binding-freebsd-x64": "1.2.1",
-        "@rolldown/binding-linux-arm-gnueabihf": "1.2.1",
-        "@rolldown/binding-linux-arm64-gnu": "1.2.1",
-        "@rolldown/binding-linux-arm64-musl": "1.2.1",
-        "@rolldown/binding-linux-ppc64-gnu": "1.2.1",
-        "@rolldown/binding-linux-s390x-gnu": "1.2.1",
-        "@rolldown/binding-linux-x64-gnu": "1.2.1",
-        "@rolldown/binding-linux-x64-musl": "1.2.1",
-        "@rolldown/binding-openharmony-arm64": "1.2.1",
-        "@rolldown/binding-wasm32-wasi": "1.2.1",
-        "@rolldown/binding-win32-arm64-msvc": "1.2.1",
-        "@rolldown/binding-win32-x64-msvc": "1.2.1"
+        "@rolldown/binding-android-arm64": "1.1.3",
+        "@rolldown/binding-darwin-arm64": "1.1.3",
+        "@rolldown/binding-darwin-x64": "1.1.3",
+        "@rolldown/binding-freebsd-x64": "1.1.3",
+        "@rolldown/binding-linux-arm-gnueabihf": "1.1.3",
+        "@rolldown/binding-linux-arm64-gnu": "1.1.3",
+        "@rolldown/binding-linux-arm64-musl": "1.1.3",
+        "@rolldown/binding-linux-ppc64-gnu": "1.1.3",
+        "@rolldown/binding-linux-s390x-gnu": "1.1.3",
+        "@rolldown/binding-linux-x64-gnu": "1.1.3",
+        "@rolldown/binding-linux-x64-musl": "1.1.3",
+        "@rolldown/binding-openharmony-arm64": "1.1.3",
+        "@rolldown/binding-wasm32-wasi": "1.1.3",
+        "@rolldown/binding-win32-arm64-msvc": "1.1.3",
+        "@rolldown/binding-win32-x64-msvc": "1.1.3"
       }
     },
     "node_modules/saxes": {
@@ -2342,29 +2315,29 @@
       }
     },
     "node_modules/tldts": {
-      "version": "7.4.10",
-      "resolved": "https://registry.npmjs.org/tldts/-/tldts-7.4.10.tgz",
-      "integrity": "sha512-GgouD1B+sWwvkaEq8vXC15DjQitxbvs12oIXELpconwm+Tg3zfcEv4jgzq3vtKverDXsg3VI8aRgNL2Nra0Iog==",
+      "version": "7.4.3",
+      "resolved": "https://registry.npmjs.org/tldts/-/tldts-7.4.3.tgz",
+      "integrity": "sha512-A3BDQBeeukYPzB4QdQ1DtdlUmp4x2OCH8n5UVhEWbyANxNep8GavottKzd1xYKFJKjUgMyPT7EzOfnBO55s8Sg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "tldts-core": "^7.4.10"
+        "tldts-core": "^7.4.3"
       },
       "bin": {
         "tldts": "bin/cli.js"
       }
     },
     "node_modules/tldts-core": {
-      "version": "7.4.10",
-      "resolved": "https://registry.npmjs.org/tldts-core/-/tldts-core-7.4.10.tgz",
-      "integrity": "sha512-KnQjp53ZekKgm/r3l+u8kJGGzYgrWdP8+Mql7a4vijh2WE0IrZWspQj/TpTxDho/YxO+AnOZnIjQcCD+q6iJsw==",
+      "version": "7.4.3",
+      "resolved": "https://registry.npmjs.org/tldts-core/-/tldts-core-7.4.3.tgz",
+      "integrity": "sha512-27ep5H9PzdBrNd5OFM/j3WCU8F3kPwM9D0BOaOf7uYfxMJfyr0K5Tjj69Gri+sZlh2WXd5buIm47NuPF29CDiw==",
       "dev": true,
       "license": "MIT"
     },
     "node_modules/tough-cookie": {
-      "version": "6.0.2",
-      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-6.0.2.tgz",
-      "integrity": "sha512-exgYmnmL/sJpR3upZfXG5PoatXQii55xAiXGXzY+sROLZ/Y+SLcp9PgJNI9Vz37HpQ74WvDcLT8eqm+kV3FzrA==",
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-6.0.1.tgz",
+      "integrity": "sha512-LktZQb3IeoUWB9lqR5EWTHgW/VTITCXg4D21M+lvybRVdylLrRMnqaIONLVb5mav8vM19m44HIcGq4qASeu2Qw==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
@@ -2410,13 +2383,13 @@
       }
     },
     "node_modules/undici": {
-      "version": "8.10.0",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-8.10.0.tgz",
-      "integrity": "sha512-HvltHd7avK13QIw/oLe4qoOLyoVSoafqJ2jYOrtMRBkbYT31eiBQ8O0ehRKZiEZCMEyLFQNIADpgCWC5fALvYQ==",
+      "version": "7.29.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-7.29.0.tgz",
+      "integrity": "sha512-IDxfleLmmbSskfWSUATiN1nfn2rDuvnMOqb5CWR92iIfojA0Ud+ulOAAEQ57LPr9rWmsreUyf5lwyao+7GNNVw==",
       "dev": true,
       "license": "MIT",
       "engines": {
-        "node": ">=22.19.0"
+        "node": ">=20.18.1"
       }
     },
     "node_modules/use-sync-external-store": {
@@ -2429,16 +2402,16 @@
       }
     },
     "node_modules/vite": {
-      "version": "8.2.1",
-      "resolved": "https://registry.npmjs.org/vite/-/vite-8.2.1.tgz",
-      "integrity": "sha512-EU/eS7BH3XROHh2YnBefjM6DBKA6ZeMZEYQbj7NLWg5wHYlhB8B/Mayd5XsgWq+NFYccDOTemRpdETWR6Ka/lw==",
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/vite/-/vite-8.1.0.tgz",
+      "integrity": "sha512-BuJcQK/56NQTWDGn4ABea3q4SSBdNPWwNZKTkkUpcMPnLoquSYH8llRtSUIgoL1KSCpHt5eghLShn50mH36y7Q==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "lightningcss": "^1.33.0",
-        "picomatch": "^4.0.5",
-        "postcss": "^8.5.25",
-        "rolldown": "~1.2.1",
+        "lightningcss": "^1.32.0",
+        "picomatch": "^4.0.4",
+        "postcss": "^8.5.15",
+        "rolldown": "~1.1.2",
         "tinyglobby": "^0.2.17"
       },
       "bin": {
@@ -2455,7 +2428,7 @@
       },
       "peerDependencies": {
         "@types/node": "^20.19.0 || >=22.12.0",
-        "@vitejs/devtools": "^0.4.0",
+        "@vitejs/devtools": "^0.3.0",
         "esbuild": "^0.27.0 || ^0.28.0",
         "jiti": ">=1.21.0",
         "less": "^4.0.0",
@@ -2507,19 +2480,19 @@
       }
     },
     "node_modules/vitest": {
-      "version": "4.1.10",
-      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.1.10.tgz",
-      "integrity": "sha512-R9jUTe5S4Qb0HCd4TNqpC7oGcrMssMRGXLW80ubjWsW9VH5GF8y1Y0SFLY9AbqSk6nt0PnOx4H4WNJYZ13GUPw==",
+      "version": "4.1.9",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.1.9.tgz",
+      "integrity": "sha512-nE3/LEyc0z87uHYLZebqCUOaJr2hdtuPp7BQ4BosVFnfltxgAvMG08NyrSGlPpOUWvR27c5flSmYFTNr78L9GQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@vitest/expect": "4.1.10",
-        "@vitest/mocker": "4.1.10",
-        "@vitest/pretty-format": "4.1.10",
-        "@vitest/runner": "4.1.10",
-        "@vitest/snapshot": "4.1.10",
-        "@vitest/spy": "4.1.10",
-        "@vitest/utils": "4.1.10",
+        "@vitest/expect": "4.1.9",
+        "@vitest/mocker": "4.1.9",
+        "@vitest/pretty-format": "4.1.9",
+        "@vitest/runner": "4.1.9",
+        "@vitest/snapshot": "4.1.9",
+        "@vitest/spy": "4.1.9",
+        "@vitest/utils": "4.1.9",
         "es-module-lexer": "^2.0.0",
         "expect-type": "^1.3.0",
         "magic-string": "^0.30.21",
@@ -2547,12 +2520,12 @@
         "@edge-runtime/vm": "*",
         "@opentelemetry/api": "^1.9.0",
         "@types/node": "^20.0.0 || ^22.0.0 || >=24.0.0",
-        "@vitest/browser-playwright": "4.1.10",
-        "@vitest/browser-preview": "4.1.10",
-        "@vitest/browser-webdriverio": "4.1.10",
-        "@vitest/coverage-istanbul": "4.1.10",
-        "@vitest/coverage-v8": "4.1.10",
-        "@vitest/ui": "4.1.10",
+        "@vitest/browser-playwright": "4.1.9",
+        "@vitest/browser-preview": "4.1.9",
+        "@vitest/browser-webdriverio": "4.1.9",
+        "@vitest/coverage-istanbul": "4.1.9",
+        "@vitest/coverage-v8": "4.1.9",
+        "@vitest/ui": "4.1.9",
         "happy-dom": "*",
         "jsdom": "*",
         "vite": "^6.0.0 || ^7.0.0 || ^8.0.0"
diff --git a/frontend/package.json b/frontend/package.json
index db0eacb61..120f603b4 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -17,25 +17,26 @@
     "e2e": "echo 'No e2e framework configured'"
   },
   "dependencies": {
-    "@xyflow/react": "^12.11.3",
+    "@xyflow/react": "^12.11.1",
     "react": "^19.2.4",
-    "react-dom": "^19.2.8"
+    "react-dom": "^19.2.7"
   },
   "devDependencies": {
     "@testing-library/jest-dom": "^6.9.1",
     "@testing-library/react": "^16.3.2",
-    "@testing-library/user-event": "^14.6.4",
-    "@types/react": "^19.2.18",
-    "@types/react-dom": "^19.2.4",
+    "@testing-library/user-event": "^14.6.1",
+    "@types/react": "^19.2.10",
+    "@types/react-dom": "^19.2.3",
     "@vitest/coverage-v8": "^4.1.9",
     "fast-check": "^4.8.0",
-    "jsdom": "^30.0.1",
+    "jsdom": "^29.1.1",
     "typescript": "^6.0.3",
-    "vite": "^8.2.1",
-    "vitest": "^4.1.10"
+    "vite": "^8.1.0",
+    "vitest": "^4.1.9"
   },
   "overrides": {
     "esbuild": "^0.25.0",
-    "postcss": "^8.5.18"
+    "postcss": "^8.5.18",
+    "undici": "^7.29.0"
   }
 }
diff --git a/frontend/src/App.searchPolling.test.tsx b/frontend/src/App.searchPolling.test.tsx
deleted file mode 100644
index 6c48313fc..000000000
--- a/frontend/src/App.searchPolling.test.tsx
+++ /dev/null
@@ -1,290 +0,0 @@
-import '@testing-library/jest-dom/vitest'
-import { act, cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
-import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-
-const api = vi.hoisted(() => ({
-  getMe: vi.fn(),
-  listProjects: vi.fn(),
-  listConnections: vi.fn(),
-  listSnapshots: vi.fn(),
-  createProject: vi.fn(),
-  createConnection: vi.fn(),
-  createSnapshot: vi.fn(),
-  getSnapshot: vi.fn(),
-  createShareLink: vi.fn(),
-}))
-
-type CapturedNode = {
-  id: string
-  position: { x: number; y: number }
-  data: Record<string, unknown>
-}
-
-const flowCapture = vi.hoisted(() => ({
-  renders: [] as CapturedNode[][],
-  setNodes: undefined as
-    | ((update: CapturedNode[] | ((current: CapturedNode[]) => CapturedNode[])) => void)
-    | undefined,
-}))
-
-vi.mock('./api', () => api)
-vi.mock('./erd/TableNode', () => ({ default: () => null }))
-vi.mock('./erd/export', () => ({
-  downloadText: vi.fn(),
-  exportDDL: vi.fn(() => ''),
-  exportDiagramSvg: vi.fn(() => ''),
-  exportDictionaryCsv: vi.fn(() => ''),
-  exportDictionaryMarkdown: vi.fn(() => ''),
-  exportPlantUml: vi.fn(() => ''),
-}))
-vi.mock('./erd/mermaid', () => ({ exportMermaid: vi.fn(() => '') }))
-vi.mock('./erd/dbml', () => ({ exportDbml: vi.fn(() => '') }))
-vi.mock('./erd/prisma', () => ({ exportPrisma: vi.fn(() => '') }))
-vi.mock('./erd/autoInfer', () => ({ inferRelationships: vi.fn(() => []) }))
-vi.mock('./components/modals', () => ({
-  AddTableModal: () => null,
-  CardinalityModal: () => null,
-  EditEdgeModal: () => null,
-  EditTableModal: () => null,
-  ExportModal: () => null,
-  GroupModal: () => null,
-}))
-
-vi.mock('@xyflow/react', async () => {
-  const React = await import('react')
-  return {
-    Background: () => null,
-    Controls: () => null,
-    MiniMap: () => null,
-    ReactFlow: (props: { nodes: CapturedNode[]; children?: React.ReactNode }) => {
-      flowCapture.renders.push(props.nodes)
-      return (
-        <div data-testid="react-flow">
-          {props.nodes.map((node) => <span key={node.id}>{String(node.data.title)}</span>)}
-          {props.children}
-        </div>
-      )
-    },
-    addEdge: (edge: unknown, edges: unknown[]) => [...edges, edge],
-    useNodesState: (initial: CapturedNode[]) => {
-      const [nodes, setNodes] = React.useState(initial)
-      flowCapture.setNodes = setNodes as typeof flowCapture.setNodes
-      return [nodes, setNodes, vi.fn()]
-    },
-    useEdgesState: (initial: unknown[]) => {
-      const [edges, setEdges] = React.useState(initial)
-      return [edges, setEdges, vi.fn()]
-    },
-  }
-})
-
-const graphData = vi.hoisted(() => ({
-  firstUsers: {
-    title: 'public.users',
-    columns: [{ column_name: 'id', data_type: 'bigint', is_not_null: true, is_pk: true }],
-    badges: { pk: true, fk: false },
-  },
-  firstOrders: {
-    title: 'public.orders',
-    columns: [{ column_name: 'user_id', data_type: 'bigint', is_not_null: true, is_pk: false }],
-    badges: { pk: false, fk: true },
-  },
-  secondAccounts: {
-    title: 'public.accounts',
-    columns: [{ column_name: 'account_id', data_type: 'bigint', is_not_null: true, is_pk: true }],
-    badges: { pk: true, fk: false },
-  },
-}))
-
-vi.mock('./erd/convert', () => ({
-  snapshotToGraph: vi.fn((snapshotJson: { marker?: string }) => snapshotJson.marker === 'second'
-    ? { nodes: [{ id: 'accounts', type: 'tableNode', position: { x: 0, y: 0 }, data: graphData.secondAccounts }], edges: [] }
-    : {
-        nodes: [
-          { id: 'users', type: 'tableNode', position: { x: 0, y: 0 }, data: graphData.firstUsers },
-          { id: 'orders', type: 'tableNode', position: { x: 200, y: 0 }, data: graphData.firstOrders },
-        ],
-        edges: [],
-      }),
-}))
-
-import App from './App'
-
-const projects = [{ project_space_uuid: 'project-one', project_name: 'Project One' }]
-const snapshots = [
-  { schema_snapshot_uuid: 'snapshot-one', status: 'running', schema_filter: null },
-  { schema_snapshot_uuid: 'snapshot-two', status: 'succeeded', schema_filter: null },
-]
-
-function detail(id: string, marker: string, status = 'succeeded') {
-  return {
-    schema_snapshot_uuid: id,
-    status,
-    schema_filter: null,
-    error_message: null,
-    snapshot_json: { marker, relations: [], columns: [], pk_columns: [], fk_edges: [] },
-  }
-}
-
-async function renderReadyApp() {
-  render(<App />)
-  await waitFor(() => expect(api.listSnapshots).toHaveBeenCalledWith('project-one'))
-}
-
-async function diagramOpenButtons() {
-  fireEvent.click(screen.getByRole('button', { name: '다이어그램' }))
-  return screen.findAllByRole('button', { name: '열기' })
-}
-
-async function openSnapshot(index: number) {
-  const openButtons = await diagramOpenButtons()
-  fireEvent.click(openButtons[index]!)
-  await waitFor(() => expect(api.getSnapshot).toHaveBeenCalled())
-}
-
-function lastNodeData(nodeId: string): Record<string, unknown> {
-  const data = flowCapture.renders.at(-1)?.find((node) => node.id === nodeId)?.data
-  if (!data) throw new Error(`No rendered data captured for ${nodeId}`)
-  return data
-}
-
-describe('App search identity and polling isolation', () => {
-  beforeEach(() => {
-    vi.clearAllMocks()
-    flowCapture.renders.length = 0
-    flowCapture.setNodes = undefined
-    api.getMe.mockResolvedValue({ subject: 'user-one', display_name: 'User One' })
-    api.listProjects.mockResolvedValue(projects)
-    api.listConnections.mockResolvedValue([])
-    api.listSnapshots.mockResolvedValue(snapshots)
-    api.createShareLink.mockResolvedValue({ url: 'https://example.test/share' })
-  })
-
-  afterEach(() => {
-    vi.useRealTimers()
-    cleanup()
-  })
-
-  it('preserves decorated data identity for normalized-query and position-only updates', async () => {
-    api.getSnapshot.mockResolvedValue(detail('snapshot-one', 'first'))
-    await renderReadyApp()
-    await openSnapshot(0)
-    await screen.findByText('public.users')
-
-    const search = screen.getByLabelText('테이블 또는 컬럼 검색')
-    fireEvent.change(search, { target: { value: 'users' } })
-    await waitFor(() => expect(lastNodeData('users').isHighlighted).toBe(true))
-    const firstDecorated = lastNodeData('users')
-
-    fireEvent.change(search, { target: { value: ' users ' } })
-    await waitFor(() => expect(search).toHaveValue(' users '))
-    expect(lastNodeData('users')).toBe(firstDecorated)
-
-    await act(async () => {
-      flowCapture.setNodes?.((current) => current.map((node) => (
-        node.id === 'users'
-          ? { ...node, position: { x: node.position.x + 25, y: node.position.y } }
-          : node
-      )))
-    })
-    expect(lastNodeData('users')).toBe(firstDecorated)
-
-    await act(async () => {
-      flowCapture.setNodes?.((current) => current.map((node) => (
-        node.id === 'users' ? { ...node, data: { ...node.data } } : node
-      )))
-    })
-    const replacedSourceData = lastNodeData('users')
-    expect(replacedSourceData).not.toBe(firstDecorated)
-
-    fireEvent.change(search, { target: { value: 'orders' } })
-    await waitFor(() => expect(lastNodeData('orders').isHighlighted).toBe(true))
-    expect(lastNodeData('users')).not.toBe(replacedSourceData)
-    expect(graphData.firstUsers).not.toHaveProperty('isHighlighted')
-  })
-
-  it('ignores a terminal response from a superseded snapshot request', async () => {
-    let resolveFirst!: (value: ReturnType<typeof detail>) => void
-    api.getSnapshot.mockImplementation((snapshotId: string) => {
-      if (snapshotId === 'snapshot-one') {
-        return new Promise((resolve) => { resolveFirst = resolve })
-      }
-      return Promise.resolve(detail('snapshot-two', 'second'))
-    })
-
-    await renderReadyApp()
-    await openSnapshot(0)
-    await waitFor(() => expect(api.getSnapshot).toHaveBeenCalledWith('snapshot-one'))
-
-    await openSnapshot(1)
-    await screen.findByText('public.accounts')
-    const refreshCountAfterCurrentTerminal = api.listSnapshots.mock.calls.length
-
-    await act(async () => {
-      resolveFirst(detail('snapshot-one', 'first'))
-      await Promise.resolve()
-    })
-
-    expect(screen.getByText('public.accounts')).toBeInTheDocument()
-    expect(screen.queryByText('public.users')).not.toBeInTheDocument()
-    expect(api.listSnapshots).toHaveBeenCalledTimes(refreshCountAfterCurrentTerminal)
-  })
-
-  it('does not publish a stale polling rejection after the selected snapshot changes', async () => {
-    let rejectFirst!: (reason: Error) => void
-    api.getSnapshot.mockImplementation((snapshotId: string) => {
-      if (snapshotId === 'snapshot-one') {
-        return new Promise((_, reject) => { rejectFirst = reject })
-      }
-      return Promise.resolve(detail('snapshot-two', 'second'))
-    })
-
-    await renderReadyApp()
-    await openSnapshot(0)
-    await openSnapshot(1)
-    await screen.findByText('public.accounts')
-
-    await act(async () => {
-      rejectFirst(new Error('stale polling failure with secret detail'))
-      await Promise.resolve()
-    })
-
-    expect(screen.getByText('public.accounts')).toBeInTheDocument()
-    expect(screen.queryByText(/stale polling failure with secret detail/i)).not.toBeInTheDocument()
-  })
-
-  it('waits for each non-terminal request before scheduling the next poll', async () => {
-    let resolveFirst!: (value: ReturnType<typeof detail>) => void
-    let resolveSecond!: (value: ReturnType<typeof detail>) => void
-    api.getSnapshot
-      .mockImplementationOnce(() => new Promise((resolve) => { resolveFirst = resolve }))
-      .mockImplementationOnce(() => new Promise((resolve) => { resolveSecond = resolve }))
-
-    await renderReadyApp()
-    const openButtons = await diagramOpenButtons()
-    vi.useFakeTimers()
-
-    fireEvent.click(openButtons[0]!)
-    await act(async () => { await Promise.resolve() })
-    expect(api.getSnapshot).toHaveBeenCalledTimes(1)
-
-    await act(async () => { await vi.advanceTimersByTimeAsync(2000) })
-    expect(api.getSnapshot).toHaveBeenCalledTimes(1)
-
-    await act(async () => {
-      resolveFirst(detail('snapshot-one', 'first', 'running'))
-      await Promise.resolve()
-    })
-    await act(async () => { await vi.advanceTimersByTimeAsync(999) })
-    expect(api.getSnapshot).toHaveBeenCalledTimes(1)
-    await act(async () => { await vi.advanceTimersByTimeAsync(1) })
-    expect(api.getSnapshot).toHaveBeenCalledTimes(2)
-
-    await act(async () => {
-      resolveSecond(detail('snapshot-one', 'first'))
-      await Promise.resolve()
-    })
-    await act(async () => { await vi.advanceTimersByTimeAsync(5000) })
-    expect(api.getSnapshot).toHaveBeenCalledTimes(2)
-  })
-})
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 49812e448..0fa62ede3 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -198,30 +198,20 @@ export default function App() {
   const searchMatchedNodeIds = useMemo(() => {
     return findSearchMatchedNodeIds(nodes, normalizedNodeSearch);
   }, [nodes, normalizedNodeSearch]);
-
-  // ⚡ Bolt: Cache decorated search state to preserve node.data identity during 60fps drag updates
-  const searchCache = useMemo(() => new WeakMap<TableNodeData, TableNodeData>(), [normalizedNodeSearch]);
-
   const visibleNodes = useMemo(() => {
     if (!normalizedNodeSearch) return nodes;
-
     return nodes.map((node) => {
-      let cachedData = searchCache.get(node.data);
-      if (!cachedData) {
-        const isHighlighted = searchMatchedNodeIds.has(node.id);
-        cachedData = {
+      const isHighlighted = searchMatchedNodeIds.has(node.id);
+      return {
+        ...node,
+        data: {
           ...node.data,
           isDimmed: !isHighlighted,
           isHighlighted,
-        };
-        searchCache.set(node.data, cachedData);
-      }
-      return {
-        ...node,
-        data: cachedData,
+        },
       };
     });
-  }, [nodes, normalizedNodeSearch, searchMatchedNodeIds, searchCache]);
+  }, [nodes, normalizedNodeSearch, searchMatchedNodeIds]);
   const nodeSearchStatus = normalizedNodeSearch
     ? `${searchMatchedNodeIds.size}개 테이블 일치`
     : "";
@@ -319,46 +309,22 @@ export default function App() {
 
   useEffect(() => {
     if (!snapshotId) return;
-    let isCurrent = true;
-    let timer: number | null = null;
-
-    async function poll() {
-      try {
-        const s = await getSnapshot(snapshotId as string);
-        if (!isCurrent) return;
-        setSnapshot(s);
-
-        if (s.status === "succeeded" || s.status === "failed" || s.status === "not_found") {
-          if (selectedProjectId) {
-            try {
-              const snaps = await listSnapshots(selectedProjectId);
-              if (isCurrent) setSnapshots(snaps);
-            } catch (e) {
-              if (isCurrent) setError(String(e));
+    const timer = setInterval(() => {
+      getSnapshot(snapshotId)
+        .then((s) => {
+          setSnapshot(s);
+          if (s.status === "succeeded" || s.status === "failed" || s.status === "not_found") {
+            clearInterval(timer);
+            if (selectedProjectId) {
+              listSnapshots(selectedProjectId)
+                .then(setSnapshots)
+                .catch((e) => setError(String(e)));
             }
           }
-          return;
-        }
-
-        if (isCurrent) {
-          timer = window.setTimeout(poll, 1000);
-        }
-      } catch (e) {
-        if (isCurrent) {
-          setError(String(e));
-          timer = window.setTimeout(poll, 1000);
-        }
-      }
-    }
-
-    poll();
-
-    return () => {
-      isCurrent = false;
-      if (timer !== null) {
-        clearTimeout(timer);
-      }
-    };
+        })
+        .catch((e) => setError(String(e)));
+    }, 1000);
+    return () => clearInterval(timer);
   }, [selectedProjectId, snapshotId]);
 
   const graph = useMemo(() => {
diff --git a/frontend/src/components/modals/ExportModal.test.tsx b/frontend/src/components/modals/ExportModal.test.tsx
index bd89c5384..ffca69706 100644
--- a/frontend/src/components/modals/ExportModal.test.tsx
+++ b/frontend/src/components/modals/ExportModal.test.tsx
@@ -1,5 +1,6 @@
 import '@testing-library/jest-dom/vitest';
 import { cleanup, fireEvent, render, screen } from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
 import { afterEach, describe, expect, it, vi } from 'vitest';
 
 import { ExportModal } from './ExportModal';
@@ -96,7 +97,7 @@ describe('ExportModal', () => {
     expect(screen.getByRole('button', { name: '생성 중...' })).toBeDisabled();
   });
 
-  it('runs each export artifact action from the modal', () => {
+  it('runs each export artifact action from the modal', async () => {
     const onCopyExportDdl = vi.fn();
     const onDownloadSvg = vi.fn();
     const onDownloadUml = vi.fn();
@@ -105,6 +106,7 @@ describe('ExportModal', () => {
     const onExportDictionaryMarkdown = vi.fn();
     const onDownloadDbml = vi.fn();
     const onDownloadPrisma = vi.fn();
+    const user = userEvent.setup();
 
     render(
       <ExportModal
@@ -120,23 +122,31 @@ describe('ExportModal', () => {
       />,
     );
 
-    fireEvent.click(screen.getByRole('button', { name: 'SQL DDL 복사' }));
-    fireEvent.click(screen.getByRole('button', { name: 'SVG 이미지 내보내기' }));
-    fireEvent.click(screen.getByRole('button', { name: 'PlantUML 내보내기' }));
-    fireEvent.click(screen.getByRole('button', { name: 'Mermaid 내보내기' }));
-    fireEvent.click(screen.getByRole('button', { name: 'DBML 내보내기' }));
-    fireEvent.click(screen.getByRole('button', { name: 'Prisma Schema 내보내기' }));
-    fireEvent.click(screen.getByRole('button', { name: '데이터 사전 CSV 내보내기' }));
-    fireEvent.click(screen.getByRole('button', { name: '데이터 사전 Markdown 내보내기' }));
-
-    expect(onCopyExportDdl).toHaveBeenCalledOnce();
-    expect(onDownloadSvg).toHaveBeenCalledOnce();
-    expect(onDownloadUml).toHaveBeenCalledOnce();
-    expect(onDownloadMermaid).toHaveBeenCalledOnce();
-    expect(onDownloadDbml).toHaveBeenCalledOnce();
-    expect(onDownloadPrisma).toHaveBeenCalledOnce();
-    expect(onExportDictionaryCsv).toHaveBeenCalledOnce();
-    expect(onExportDictionaryMarkdown).toHaveBeenCalledOnce();
+    const enabledButtons = [
+      screen.getByRole('button', { name: 'SQL DDL 복사' }),
+      screen.getByRole('button', { name: 'SVG 이미지 내보내기' }),
+      screen.getByRole('button', { name: 'PlantUML 내보내기' }),
+      screen.getByRole('button', { name: 'Mermaid 내보내기' }),
+      screen.getByRole('button', { name: 'DBML 내보내기' }),
+      screen.getByRole('button', { name: 'Prisma Schema 내보내기' }),
+      screen.getByRole('button', { name: '데이터 사전 CSV 내보내기' }),
+      screen.getByRole('button', { name: '데이터 사전 Markdown 내보내기' }),
+    ];
+
+    for (const button of enabledButtons) {
+      await user.click(button);
+      await user.keyboard('{Enter}');
+      await user.keyboard(' ');
+    }
+
+    expect(onCopyExportDdl).toHaveBeenCalledTimes(3);
+    expect(onDownloadSvg).toHaveBeenCalledTimes(3);
+    expect(onDownloadUml).toHaveBeenCalledTimes(3);
+    expect(onDownloadMermaid).toHaveBeenCalledTimes(3);
+    expect(onDownloadDbml).toHaveBeenCalledTimes(3);
+    expect(onDownloadPrisma).toHaveBeenCalledTimes(3);
+    expect(onExportDictionaryCsv).toHaveBeenCalledTimes(3);
+    expect(onExportDictionaryMarkdown).toHaveBeenCalledTimes(3);
   });
 
   it('shows share link copy or creation errors', () => {
@@ -150,7 +160,8 @@ describe('ExportModal', () => {
     expect(screen.getByRole('alert')).toHaveTextContent('공유 링크 복사에 실패했습니다.');
   });
 
-  it('explains when exports cannot be generated yet', () => {
+  it('explains when exports cannot be generated yet', async () => {
+    const user = userEvent.setup();
     render(
       <ExportModal
         {...baseProps}
@@ -161,23 +172,48 @@ describe('ExportModal', () => {
     );
 
     expect(screen.getAllByText('먼저 테이블을 추가하세요')).toHaveLength(8);
-    expect(screen.getByRole('button', { name: 'SQL DDL 복사' })).toBeDisabled();
-    expect(screen.getByRole('button', { name: 'SVG 이미지 내보내기' })).toBeDisabled();
-    expect(screen.getByRole('button', { name: 'PlantUML 내보내기' })).toBeDisabled();
-    expect(screen.getByRole('button', { name: 'Mermaid 내보내기' })).toBeDisabled();
-    expect(screen.getByRole('button', { name: 'DBML 내보내기' })).toBeDisabled();
-    expect(screen.getByRole('button', { name: 'Prisma Schema 내보내기' })).toBeDisabled();
-    expect(screen.getByRole('button', { name: '데이터 사전 CSV 내보내기' })).toBeDisabled();
-    expect(screen.getByRole('button', { name: '데이터 사전 Markdown 내보내기' })).toBeDisabled();
+
+    const disabledButtons = [
+      'SQL DDL 복사', 'SVG 이미지 내보내기', 'PlantUML 내보내기', 'Mermaid 내보내기',
+      'DBML 내보내기', 'Prisma Schema 내보내기', '데이터 사전 CSV 내보내기', '데이터 사전 Markdown 내보내기'
+    ];
+
+    for (const name of disabledButtons) {
+      const button = screen.getByRole('button', { name });
+      expect(button).toHaveAttribute('aria-disabled', 'true');
+      button.focus();
+      expect(button).toHaveFocus();
+      await user.click(button);
+      await user.keyboard('{Enter}');
+      await user.keyboard(' ');
+    }
+
+    expect(baseProps.onCopyExportDdl).not.toHaveBeenCalled();
+    expect(baseProps.onDownloadSvg).not.toHaveBeenCalled();
+    expect(baseProps.onDownloadUml).not.toHaveBeenCalled();
+    expect(baseProps.onDownloadMermaid).not.toHaveBeenCalled();
+    expect(baseProps.onDownloadDbml).not.toHaveBeenCalled();
+    expect(baseProps.onDownloadPrisma).not.toHaveBeenCalled();
+    expect(baseProps.onExportDictionaryCsv).not.toHaveBeenCalled();
+    expect(baseProps.onExportDictionaryMarkdown).not.toHaveBeenCalled();
   });
 
-  it('exposes access-control guidance for disabled button', () => {
+  it('exposes access-control guidance for disabled button', async () => {
+    const user = userEvent.setup();
     render(<ExportModal {...baseProps} canCreateShareLink={false} />);
 
     expect(screen.getByText('접근 권한 관리는 프로젝트 권한 설정에서 처리합니다.')).toBeInTheDocument();
     const accessManagementButton = screen.getByRole('button', { name: '접근 관리' });
-    expect(accessManagementButton).toBeDisabled();
+    expect(accessManagementButton).toHaveAttribute('aria-disabled', 'true');
     expect(accessManagementButton).toHaveAttribute('aria-describedby', 'share-export-access-hint');
     expect(accessManagementButton).not.toHaveAttribute('title');
+
+    accessManagementButton.focus();
+    expect(accessManagementButton).toHaveFocus();
+    await user.click(accessManagementButton);
+    await user.keyboard('{Enter}');
+    await user.keyboard(' ');
+
+    expect(baseProps.onCloseExport).not.toHaveBeenCalled();
   });
 });
diff --git a/frontend/src/components/modals/ExportModal.tsx b/frontend/src/components/modals/ExportModal.tsx
index 995393ceb..50f6d6e68 100644
--- a/frontend/src/components/modals/ExportModal.tsx
+++ b/frontend/src/components/modals/ExportModal.tsx
@@ -202,7 +202,8 @@ export function ExportModal({
               )}
               <button
                 type="button"
-                disabled
+                aria-disabled={true}
+                onClick={(e) => e.preventDefault()}
                 aria-describedby="share-export-access-hint"
                 className="exportModal__disabledHintButton"
               >
@@ -226,12 +227,21 @@ export function ExportModal({
                 <div className="exportModal__artifactRow" key={artifact.label}>
                   <div>
                     <strong>{artifact.label}</strong>
-                    <span>{artifact.description}</span>
+                    <span id={`export-desc-${artifact.label.replace(/\s+/g, '-')}`}>
+                      {artifact.description}
+                    </span>
                   </div>
                   <button
                     type="button"
-                    onClick={artifact.onExport}
-                    disabled={artifact.disabled}
+                    onClick={(e) => {
+                      if (artifact.disabled) {
+                        e.preventDefault();
+                      } else {
+                        artifact.onExport();
+                      }
+                    }}
+                    aria-disabled={artifact.disabled ? true : undefined}
+                    aria-describedby={`export-desc-${artifact.label.replace(/\s+/g, '-')}`}
                     aria-label={artifact.ariaLabel}
                     aria-live={artifact.label === 'SQL DDL' ? 'polite' : undefined}
                   >
diff --git a/frontend/src/styles.css b/frontend/src/styles.css
index 3605ce9fb..c55010b74 100644
--- a/frontend/src/styles.css
+++ b/frontend/src/styles.css
@@ -432,7 +432,8 @@ button {
   cursor: pointer;
 }
 
-button:disabled {
+button:disabled,
+button[aria-disabled="true"] {
   opacity: 0.6;
   cursor: not-allowed;
   background-color: var(--color-surface-muted);