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/wrong-predictions/wrong-predictions.svg

@@ -61,19 +61,19 @@
 <text class="edge-label" x="169.0" y="347.0">관측 전</text>
 <g id="node-predict">
 <rect class="node-shape kind-process emphasis-primary role-source" data-evidence="744-752" x="70.0" y="60.0" width="150.0" height="71.0" rx="7" />
-<text class="node-label" x="145.0" y="87.0">예측을 먼저 적는다</text>
+<text class="node-label" x="145.0" y="87.0">예측 선기록</text>
 <line class="node-detail-divider" x1="84.0" y1="108.0" x2="206.0" y2="108.0" />
-<text class="node-detail" x="86.0" y="125.0">예측 다섯 개가 틀렸다</text>
+<text class="node-detail" x="86.0" y="125.0">틀린 예측 5건</text>
 </g>
 <g id="node-verify">
 <rect class="node-shape kind-process emphasis-primary role-control" data-evidence="744-752" x="70.0" y="227.0" width="150.0" height="71.0" rx="7" />
-<text class="node-label" x="145.0" y="254.0">주입이 걸렸는지 확인</text>
+<text class="node-label" x="145.0" y="254.0">주입 검증</text>
 <line class="node-detail-divider" x1="84.0" y1="275.0" x2="206.0" y2="275.0" />
-<text class="node-detail" x="86.0" y="292.0">아홉 번 조용히 실패했다</text>
+<text class="node-detail" x="86.0" y="292.0">조용한 실패 9건</text>
 </g>
 <g id="node-control">
 <rect class="node-shape kind-process emphasis-warning role-control" data-evidence="744-753" x="70.0" y="394.0" width="150.0" height="64.0" rx="7" />
-<text class="node-label" x="145.0" y="424.0">대조군을 잡는다</text>
+<text class="node-label" x="145.0" y="424.0">대조군 확보</text>
 </g>
 <g id="node-conclusion">
 <rect class="node-shape kind-component emphasis-primary role-target" data-evidence="744-753" x="70.0" y="554.0" width="150.0" height="64.0" rx="7" />