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/b7-cookie-session-tradeoff/b7-cookie-session-tradeoff.svg

@@ -51,14 +51,14 @@
 </defs>
 <rect class="canvas" width="680" height="729" />
 <polyline class="edge kind-read style-solid emphasis-normal" points="157.0,517.0 157.0,565.0 157.0,565.0 157.0,613.0" data-evidence="441-452" />
-<rect class="edge-label-bg" x="128.4" y="551.0" width="105.1" height="22" rx="3" />
-<text class="edge-label" x="181.0" y="566.0">생성 시각이 여기 남는다</text>
+<rect class="edge-label-bg" x="155.2" y="551.0" width="51.5" height="22" rx="3" />
+<text class="edge-label" x="181.0" y="566.0">생성 시각</text>
 <polyline class="edge kind-write style-solid emphasis-normal" points="157.0,157.0 157.0,205.0 157.0,205.0 157.0,253.0" data-evidence="419-432" />
-<rect class="edge-label-bg" x="141.8" y="191.0" width="78.3" height="22" rx="3" />
-<text class="edge-label" x="181.0" y="206.0">티켓을 암호화한다</text>
+<rect class="edge-label-bg" x="151.9" y="191.0" width="58.2" height="22" rx="3" />
+<text class="edge-label" x="181.0" y="206.0">티켓 암호화</text>
 <polyline class="edge kind-read style-solid emphasis-normal" points="157.0,324.0 157.0,372.0 157.0,372.0 157.0,420.0" data-evidence="429-438" />
-<rect class="edge-label-bg" x="141.8" y="358.0" width="78.3" height="22" rx="3" />
-<text class="edge-label" x="181.0" y="373.0">키 이름을 만든다</text>
+<rect class="edge-label-bg" x="148.6" y="358.0" width="64.9" height="22" rx="3" />
+<text class="edge-label" x="181.0" y="373.0">키 이름 생성</text>
 <g id="node-secret">
 <rect class="node-shape kind-datastore emphasis-primary role-source" data-evidence="419-428" x="70.0" y="73.0" width="174.0" height="71.0" /><ellipse class="node-shape kind-datastore emphasis-primary role-source" cx="157.0" cy="73.0" rx="87.0" ry="13.0" /><path class="storage-bottom" d="M 70.0 144.0 A 87.0 13.0 0 0 0 244.0 144.0" />
 <text class="node-label" x="157.0" y="100.0">k8s Secret</text>
@@ -66,21 +66,21 @@
 <text class="node-detail" x="86.0" y="138.0">--cookie-secret 은 단수</text>
 </g>
 <g id="node-ticket">
-<rect class="node-shape kind-component emphasis-warning role-control" data-evidence="429-438" x="80.5" y="253.0" width="153.0" height="71.0" rx="7" />
+<rect class="node-shape kind-component emphasis-warning role-control" data-evidence="429-438" x="77.0" y="253.0" width="160.0" height="71.0" rx="7" />
 <text class="node-label" x="157.0" y="280.0">쿠키의 티켓</text>
-<line class="node-detail-divider" x1="94.5" y1="301.0" x2="219.5" y2="301.0" />
-<text class="node-detail" x="96.5" y="318.0">secret 을 바꾸면 못 푼다</text>
+<line class="node-detail-divider" x1="91.0" y1="301.0" x2="223.0" y2="301.0" />
+<text class="node-detail" x="93.0" y="318.0">secret 교체 시 복호화 불가</text>
 </g>
 <g id="node-redis-session">
 <rect class="node-shape kind-datastore emphasis-warning role-target" data-evidence="429-440" x="82.0" y="433.0" width="150.0" height="71.0" /><ellipse class="node-shape kind-datastore emphasis-warning role-target" cx="157.0" cy="433.0" rx="75.0" ry="13.0" /><path class="storage-bottom" d="M 82.0 504.0 A 75.0 13.0 0 0 0 232.0 504.0" />
 <text class="node-label" x="157.0" y="460.0">Redis 의 세션</text>
 <line class="node-detail-divider" x1="96.0" y1="481.0" x2="218.0" y2="481.0" />
-<text class="node-detail" x="98.0" y="498.0">고아로 남는다</text>
+<text class="node-detail" x="98.0" y="498.0">고아 세션</text>
 </g>
 <g id="node-ttl">
 <rect class="node-shape kind-component emphasis-primary role-target" data-evidence="441-452" x="82.0" y="613.0" width="150.0" height="71.0" rx="7" />
 <text class="node-label" x="157.0" y="640.0">TTL</text>
 <line class="node-detail-divider" x1="96.0" y1="661.0" x2="218.0" y2="661.0" />
-<text class="node-detail" x="98.0" y="678.0">역산으로 고아를 고른다</text>
+<text class="node-detail" x="98.0" y="678.0">생성 시각 역산</text>
 </g>
 </svg>