docs(keycloak-session-store): take the sentences out of the diagram canvases

The skill says drawings carry names and sentences go in <desc> and the
paragraph beside the figure. I put sentences in node details and edge labels
instead, and 27 of the 28 diagrams shipped with prose inside the canvas —
"예측 다섯 개가 틀렸다", "아홉 번 조용히 실패했다", "막혀서 닿지 않는다".

Only label and details render on the canvas; description does not. So every
sentence moved to a noun phrase and the meaning stays in description, which
was already carrying it.

  막혀서 닿지 않는다              -> 차단
  아홉 번 조용히 실패했다         -> 조용한 실패 9건
  예측 다섯 개가 틀렸다           -> 틀린 예측 5건
  로그아웃이 정리하지 않는다      -> 로그아웃 미정리
  볼륨이 없으면 여기까지다        -> 볼륨 없음

Three node labels were sentences too and became names: 세션 스냅샷, 예측
선기록, 대조군 확보.

What stays is what the rules protect — identifiers, commands and measured
values: PRIMARY KEY (client_registration_id, principal_name),
ValidationFailedException: 1 changesets check sum, nginx -t && nginx -s
reload, SET LOCAL synchronous_commit TO OFF. Those are names of things, not
prose about them.

294 canvas strings across 28 diagrams, none matching a sentence ending,
average 11 characters. All 28 still lint clean and re-rendered.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/keycloak-session-store/final/assets/d3-secret-exposure/d3-secret-exposure.svg

@@ -51,16 +51,16 @@
 </defs>
 <rect class="canvas" width="680" height="388" />
 <polyline class="edge kind-write style-solid emphasis-normal" points="253.0,157.0 253.0,205.0 145.0,205.0 145.0,253.0" data-evidence="495-501" />
-<rect class="edge-label-bg" x="166.6" y="163.0" width="64.9" height="22" rx="3" />
-<text class="edge-label" x="199.0" y="178.0">여기 저장된다</text>
+<rect class="edge-label-bg" x="177.0" y="163.0" width="44.0" height="22" rx="3" />
+<text class="edge-label" x="199.0" y="178.0">저장</text>
 <polyline class="edge kind-write style-solid emphasis-normal" points="271.0,157.0 271.0,209.8 367.0,209.8 367.0,262.5" data-evidence="495-501" />
-<rect class="edge-label-bg" x="296.6" y="167.8" width="44.8" height="22" rx="3" />
-<text class="edge-label" x="319.0" y="182.8">주입된다</text>
+<rect class="edge-label-bg" x="297.0" y="167.8" width="44.0" height="22" rx="3" />
+<text class="edge-label" x="319.0" y="182.8">주입</text>
 <g id="node-secret">
 <rect class="node-shape kind-datastore emphasis-warning role-source" data-evidence="495-501" x="187.0" y="73.0" width="150.0" height="71.0" /><ellipse class="node-shape kind-datastore emphasis-warning role-source" cx="262.0" cy="73.0" rx="75.0" ry="13.0" /><path class="storage-bottom" d="M 187.0 144.0 A 75.0 13.0 0 0 0 337.0 144.0" />
 <text class="node-label" x="262.0" y="100.0">k8s Secret</text>
 <line class="node-detail-divider" x1="201.0" y1="121.0" x2="323.0" y2="121.0" />
-<text class="node-detail" x="203.0" y="138.0">인코딩이지 암호화가 아니다</text>
+<text class="node-detail" x="203.0" y="138.0">base64 인코딩</text>
 </g>
 <g id="node-etcd">
 <rect class="node-shape kind-datastore emphasis-warning role-target" data-evidence="495-501" x="70.0" y="266.0" width="150.0" height="64.0" /><ellipse class="node-shape kind-datastore emphasis-warning role-target" cx="145.0" cy="266.0" rx="75.0" ry="13.0" /><path class="storage-bottom" d="M 70.0 330.0 A 75.0 13.0 0 0 0 220.0 330.0" />