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/.techviz/open-questions-answered/spec.json

@@ -74,7 +74,7 @@
       "emphasis": "warning",
       "description": "덮어쓰기와 정리 누락은 여기가 원인이다.",
       "details": [
-        "세션 id 가 키에 없다"
+        "키에 세션 id 없음"
       ],
       "evidence": [
         {
@@ -86,7 +86,7 @@
     },
     {
       "id": "snapshot",
-      "label": "세션은 스냅샷이다",
+      "label": "세션 스냅샷",
       "kind": "process",
       "role": "target",
       "emphasis": "warning",
@@ -108,7 +108,7 @@
       "id": "q-s",
       "from": "questions",
       "to": "store-choice",
-      "label": "먼저 여기를 본다",
+      "label": "1차 검토",
       "kind": "request",
       "evidence": [
         {
@@ -122,7 +122,7 @@
       "id": "s-sc",
       "from": "store-choice",
       "to": "schema",
-      "label": "여기서 풀리지 않는 것",
+      "label": "미해결 잔여",
       "kind": "request",
       "evidence": [
         {
@@ -136,7 +136,7 @@
       "id": "sc-sn",
       "from": "schema",
       "to": "snapshot",
-      "label": "남는 것",
+      "label": "최종 잔여",
       "kind": "request",
       "evidence": [
         {