docs(keycloak-session-store): rewrite the prose and the diagram labels out of AI register

Two things read as machine-written and both are now fixed with the
repository's own tooling.

The diagram labels counted abstractions instead of naming things —
"틀린 예측 5건", "조용한 실패 9건", "로컬 아티팩트 76건". Replaced with what
those actually were, which is also more useful in a drawing:

  틀린 예측 5건        -> A-1 · A-2 · A-6 · B-4 · B-6
  조용한 실패 9건      -> NetworkPolicy · tc · kill · iptables
  로컬 아티팩트 76건   -> 연결수 0 · 50µs
  A층 결론 3건 반전    -> A-1 · A-2 · A-8

The prose was staccato: 30.7 characters average against a 48-75 reference,
45% of sentences under 25 characters, and causal connectives at 4.9 per 100
against a floor of 6. check_prose reported an error for closing six
sentences with 「~것이 ~이다」.

Roughly ninety sentences were rewritten — joining pairs that carry a real
causal or contrastive relation, and varying the joins. The first pass
overcorrected into a new monotony (는데 at 47 occurrences, connectives up to
31.9, above the ceiling), so twenty-three of those were varied into 지만,
-고, em-dashes, or split back apart.

  check_prose      FAIL error 1  ->  OK error 0
  평균 문장 길이    30.7  ->  43.1
  25자 미만 비율    45.4% ->  23.4%
  이유 연결어미     4.9   ->  within range

Two style_profile numbers still read outside the band, and the reason is
worth writing down rather than editing around: the tool counts each image
caption as a sentence, and this document carries 28 diagrams. Excluding
captions and separators the prose is 46.4 characters average with 14.3%
short — inside the reference range. Padding sentences to move the remaining
gap is what CLAUDE.md forbids, so it stops here.

Protected values were checked against source and are unchanged: 153건/149건,
1,872 ms, 20,000 ms, 22.2 초, 2305초, 845361바이트, 8856건, 205.7ms, 106초.
All 28 diagrams still lint clean with no sentence left on any canvas.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docs/keycloak-session-store/final/assets/measurement-control/measurement-control.drawio

@@ -14,7 +14,7 @@
         <mxCell id="n_attribution" value="귀속&lt;br/&gt;대조군 0 → 귀속 성립" tooltip="대조군과 대비될 때만 성립한다. | Evidence: L596-L618" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;strokeColor=#2563eb;strokeWidth=2;" vertex="1" parent="1">
           <mxGeometry x="70.0" y="387.0" width="150.0" height="71.0" as="geometry"/>
         </mxCell>
-        <mxCell id="n_misreport" value="오보&lt;br/&gt;로컬 아티팩트 76건" tooltip="대조군이 없으면 여기로 간다. | Evidence: L607-L618" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;strokeColor=#d97706;fillColor=#fffdf5;" vertex="1" parent="1">
+        <mxCell id="n_misreport" value="오보&lt;br/&gt;연결수 0 · 50µs" tooltip="대조군이 없으면 여기로 간다. | Evidence: L607-L618" style="whiteSpace=wrap;html=1;rounded=1;strokeWidth=2;fontSize=14;fontStyle=1;fillColor=#ffffff;strokeColor=#2d4357;verticalAlign=middle;strokeColor=#d97706;fillColor=#fffdf5;" vertex="1" parent="1">
           <mxGeometry x="280.0" y="387.0" width="150.0" height="71.0" as="geometry"/>
         </mxCell>
         <mxCell id="e_b-o" value="비교 기준" style="edgeStyle=orthogonalEdgeStyle;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;strokeWidth=2;endArrow=block;endFill=1;" edge="1" parent="1" source="n_baseline" target="n_observation">

docs/keycloak-session-store/final/assets/measurement-control/measurement-control.excalidraw

@@ -568,11 +568,11 @@
       "locked": false,
       "fontSize": 15,
       "fontFamily": 5,
-      "text": "오보\n로컬 아티팩트 76건",
+      "text": "오보\n연결수 0 · 50µs",
       "textAlign": "center",
       "verticalAlign": "middle",
       "containerId": null,
-      "originalText": "오보\n로컬 아티팩트 76건",
+      "originalText": "오보\n연결수 0 · 50µs",
       "autoResize": true,
       "lineHeight": 1.25
     }

docs/keycloak-session-store/final/assets/measurement-control/measurement-control.manifest.json

@@ -2,7 +2,7 @@
   "harness_version": "0.2.0",
   "spec_id": "measurement-control",
   "spec_version": "1.1",
-  "spec_sha256": "169ffe513a56bc94943815168f5dd8c311041aabaa20bb8ed1328c25936e7334",
+  "spec_sha256": "ae3eea812647ead9d8070fc63105845f9fcace81626e3b363d88da965fca0004",
   "source_context": {
     "document": "docs/keycloak-session-store/final/document.md",
     "document_sha256": "1d44cba1905544d92f1d26ae36a8deb64a3db3914d6b488fd30d6ae7f8cfbabe",

docs/keycloak-session-store/final/assets/measurement-control/measurement-control.svg

@@ -79,6 +79,6 @@
 <rect class="node-shape kind-process emphasis-warning role-target" data-evidence="607-618" x="280.0" y="387.0" width="150.0" height="71.0" rx="7" />
 <text class="node-label" x="355.0" y="414.0">오보</text>
 <line class="node-detail-divider" x1="294.0" y1="435.0" x2="416.0" y2="435.0" />
-<text class="node-detail" x="296.0" y="452.0">로컬 아티팩트 76건</text>
+<text class="node-detail" x="296.0" y="452.0">연결수 0 · 50µs</text>
 </g>
 </svg>