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/injection-verification/injection-verification.excalidraw

@@ -94,11 +94,11 @@
       "locked": false,
       "fontSize": 13,
       "fontFamily": 5,
-      "text": "걸렸는가를 먼저 본다",
+      "text": "상태 확인",
       "textAlign": "center",
       "verticalAlign": "middle",
       "containerId": null,
-      "originalText": "걸렸는가를 먼저 본다",
+      "originalText": "상태 확인",
       "autoResize": true,
       "lineHeight": 1.25
     },
@@ -165,9 +165,9 @@
     {
       "id": "edge-label-v-o",
       "type": "text",
-      "x": 704.0,
+      "x": 715.0,
       "y": 55.5,
-      "width": 112,
+      "width": 90,
       "height": 24,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -193,11 +193,11 @@
       "locked": false,
       "fontSize": 13,
       "fontFamily": 5,
-      "text": "걸린 뒤에만 결과를 읽는다",
+      "text": "결과 판독",
       "textAlign": "center",
       "verticalAlign": "middle",
       "containerId": null,
-      "originalText": "걸린 뒤에만 결과를 읽는다",
+      "originalText": "결과 판독",
       "autoResize": true,
       "lineHeight": 1.25
     },
@@ -262,11 +262,11 @@
       "locked": false,
       "fontSize": 15,
       "fontFamily": 5,
-      "text": "주입 명령\n아홉 번 조용히 실패했다",
+      "text": "주입 명령\n조용한 실패 9건",
       "textAlign": "center",
       "verticalAlign": "middle",
       "containerId": null,
-      "originalText": "주입 명령\n아홉 번 조용히 실패했다",
+      "originalText": "주입 명령\n조용한 실패 9건",
       "autoResize": true,
       "lineHeight": 1.25
     },
@@ -344,7 +344,7 @@
       "type": "rectangle",
       "x": 840.0,
       "y": 60.0,
-      "width": 174.0,
+      "width": 150.0,
       "height": 71.0,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -374,7 +374,7 @@
       "type": "text",
       "x": 850.0,
       "y": 70.0,
-      "width": 154.0,
+      "width": 130.0,
       "height": 51.0,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -400,11 +400,11 @@
       "locked": false,
       "fontSize": 15,
       "fontFamily": 5,
-      "text": "결과 관측\n주입 실패 = 영향 없음 으로 읽힌다",
+      "text": "결과 관측\n실패 · 무영향 구별 불가",
       "textAlign": "center",
       "verticalAlign": "middle",
       "containerId": null,
-      "originalText": "결과 관측\n주입 실패 = 영향 없음 으로 읽힌다",
+      "originalText": "결과 관측\n실패 · 무영향 구별 불가",
       "autoResize": true,
       "lineHeight": 1.25
     }