diff --git a/web-ui/src/app/cases/[caseNumber]/compose/page.tsx b/web-ui/src/app/cases/[caseNumber]/compose/page.tsx
index 5a389a5..3d73766 100644
--- a/web-ui/src/app/cases/[caseNumber]/compose/page.tsx
+++ b/web-ui/src/app/cases/[caseNumber]/compose/page.tsx
@@ -9,7 +9,9 @@ import { Button } from "@/components/ui/button";
 import { Skeleton } from "@/components/ui/skeleton";
 import { SubsectionCard } from "@/components/compose/subsection-card";
 import { PrecedentsSection } from "@/components/compose/precedents-section";
+import { DecisionBlocksPanel } from "@/components/cases/decision-blocks-panel";
 import { Markdown } from "@/components/ui/markdown";
+import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { useCase, type CaseStatus } from "@/lib/api/cases";
 import { useResearchAnalysis } from "@/lib/api/research";
 import { useCasePrecedents } from "@/lib/api/precedents";
@@ -257,7 +259,7 @@ export default function ComposePage({
         {parties && <p className="text-ink-soft text-sm mt-2">{parties}</p>}
       </div>
 
-      {analysis.isPending ? (
+      {caseQuery.isPending ? (
         <Card className="bg-surface border-rule shadow-sm">
           <CardContent className="px-6 py-5 space-y-3">
             <Skeleton className="h-6 w-48" />
@@ -266,31 +268,54 @@ export default function ComposePage({
             <Skeleton className="h-32 w-full" />
           </CardContent>
         </Card>
-      ) : isNotFound ? (
-        <Card className="bg-surface border-rule shadow-sm">
-          <CardContent className="px-6 py-12 text-center space-y-3">
-            <div className="text-gold text-3xl" aria-hidden>❦</div>
-            <h2 className="text-navy text-lg mb-0">
-              טרם בוצע ניתוח משפטי לתיק זה
-            </h2>
-            <p className="text-ink-muted text-sm max-w-md mx-auto">
-              לאחר שקובץ <code>analysis-and-research.md</code> ייווצר, תוכלי
-              לערוך כאן את עמדת הוועדה לכל טענת סף וסוגיה.
-            </p>
-          </CardContent>
-        </Card>
-      ) : analysis.error ? (
-        <Card className="bg-danger-bg border-danger/40">
-          <CardContent className="px-6 py-5 text-center">
-            <p className="text-danger">{analysis.error.message}</p>
-          </CardContent>
-        </Card>
-      ) : analysis.data ? (
-        /* ── Two-column workspace: main editor list + 320px side rail ──────── */
+      ) : (
+        /* ── Two-column workspace: tabbed main editor + 320px side rail ──── */
         <div className="grid gap-6 lg:grid-cols-[1fr_320px] items-start">
-          {/* MAIN — the block/subsection editor list */}
-          <div className="space-y-6 min-w-0">
-            {/* Threshold claims */}
+          {/* MAIN — block editor (default) + chair positions, as tabs (mockup 03) */}
+          <div className="min-w-0">
+            <Tabs defaultValue="blocks" dir="rtl">
+              <TabsList className="bg-rule-soft/60">
+                <TabsTrigger value="blocks">עורך הבלוקים</TabsTrigger>
+                <TabsTrigger value="positions">עמדות וטענות</TabsTrigger>
+              </TabsList>
+
+              {/* Tab 1 — the 12-block decision editor (reused DecisionBlocksPanel) */}
+              <TabsContent value="blocks" className="mt-5">
+                <DecisionBlocksPanel caseNumber={caseNumber} />
+              </TabsContent>
+
+              {/* Tab 2 — chair positions on the analyst's threshold-claims + issues */}
+              <TabsContent value="positions" className="mt-5">
+                {analysis.isPending ? (
+                  <Card className="bg-surface border-rule shadow-sm">
+                    <CardContent className="px-6 py-5 space-y-3">
+                      <Skeleton className="h-6 w-48" />
+                      <Skeleton className="h-4 w-96" />
+                      <Skeleton className="h-32 w-full" />
+                    </CardContent>
+                  </Card>
+                ) : isNotFound ? (
+                  <Card className="bg-surface border-rule shadow-sm">
+                    <CardContent className="px-6 py-12 text-center space-y-3">
+                      <div className="text-gold text-3xl" aria-hidden>❦</div>
+                      <h2 className="text-navy text-lg mb-0">
+                        טרם בוצע ניתוח משפטי לתיק זה
+                      </h2>
+                      <p className="text-ink-muted text-sm max-w-md mx-auto">
+                        לאחר שקובץ <code>analysis-and-research.md</code> ייווצר, תוכלי
+                        לערוך כאן את עמדת הוועדה לכל טענת סף וסוגיה.
+                      </p>
+                    </CardContent>
+                  </Card>
+                ) : analysis.error ? (
+                  <Card className="bg-danger-bg border-danger/40">
+                    <CardContent className="px-6 py-5 text-center">
+                      <p className="text-danger">{analysis.error.message}</p>
+                    </CardContent>
+                  </Card>
+                ) : analysis.data ? (
+                  <div className="space-y-6">
+                    {/* Threshold claims */}
             {analysis.data.threshold_claims &&
               analysis.data.threshold_claims.length > 0 && (
                 <div className="space-y-3">
@@ -365,6 +390,10 @@ export default function ComposePage({
                 </CardContent>
               </Card>
             )}
+                  </div>
+                ) : null}
+              </TabsContent>
+            </Tabs>
           </div>
 
           {/* SIDE RAIL — documents · attached precedents · finish-and-transfer */}
@@ -421,7 +450,7 @@ export default function ComposePage({
             />
           </aside>
         </div>
-      ) : null}
+      )}
     </AppShell>
   );
 }