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/renewal-to-serving-gap/renewal-to-serving-gap.excalidraw

@@ -6,9 +6,9 @@
     {
       "id": "edge-needs-reload",
       "type": "arrow",
-      "x": 592.5,
+      "x": 575.0,
       "y": 189.0,
-      "width": 170.5,
+      "width": 188.0,
       "height": 62.5,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -36,15 +36,15 @@
           62.5
         ],
         [
-          85.25,
+          94.0,
           62.5
         ],
         [
-          85.25,
+          94.0,
           0.0
         ],
         [
-          170.5,
+          188.0,
           0.0
         ]
       ],
@@ -66,9 +66,9 @@
     {
       "id": "edge-label-needs-reload",
       "type": "text",
-      "x": 633.75,
+      "x": 648.0,
       "y": 208.25,
-      "width": 136,
+      "width": 90,
       "height": 24,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -94,11 +94,11 @@
       "locked": false,
       "fontSize": 13,
       "fontFamily": 5,
-      "text": "reload 없이는 닿지 않는다",
+      "text": "reload 필요",
       "textAlign": "center",
       "verticalAlign": "middle",
       "containerId": null,
-      "originalText": "reload 없이는 닿지 않는다",
+      "originalText": "reload 필요",
       "autoResize": true,
       "lineHeight": 1.25
     },
@@ -305,7 +305,7 @@
       "type": "arrow",
       "x": 220.0,
       "y": 189.0,
-      "width": 170.5,
+      "width": 188.0,
       "height": 62.5,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -333,15 +333,15 @@
           0.0
         ],
         [
-          85.25,
+          94.0,
           0.0
         ],
         [
-          85.25,
+          94.0,
           62.5
         ],
         [
-          170.5,
+          188.0,
           62.5
         ]
       ],
@@ -363,7 +363,7 @@
     {
       "id": "edge-label-write",
       "type": "text",
-      "x": 284.25,
+      "x": 293.0,
       "y": 208.25,
       "width": 90,
       "height": 24,
@@ -540,9 +540,9 @@
     {
       "id": "node-live-link",
       "type": "rectangle",
-      "x": 390.5,
+      "x": 408.0,
       "y": 203.0,
-      "width": 202.0,
+      "width": 167.0,
       "height": 97.0,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -570,9 +570,9 @@
     {
       "id": "node-label-live-link",
       "type": "text",
-      "x": 400.5,
+      "x": 418.0,
       "y": 213.0,
-      "width": 182.0,
+      "width": 147.0,
       "height": 77.0,
       "angle": 0,
       "strokeColor": "#1e1e1e",
@@ -598,11 +598,11 @@
       "locked": false,
       "fontSize": 15,
       "fontFamily": 5,
-      "text": "live/fullchain.pem\narchive/cert2.pem 을 가리킨다",
+      "text": "live/fullchain.pem\n→ archive/cert2.pem",
       "textAlign": "center",
       "verticalAlign": "middle",
       "containerId": null,
-      "originalText": "live/fullchain.pem\narchive/cert2.pem 을 가리킨다",
+      "originalText": "live/fullchain.pem\n→ archive/cert2.pem",
       "autoResize": true,
       "lineHeight": 1.25
     },