diff --git a/frontend/src/shell/ModelActivityPanel.test.tsx b/frontend/src/shell/ModelActivityPanel.test.tsx
index c11aa08d..2aee79a6 100644
--- a/frontend/src/shell/ModelActivityPanel.test.tsx
+++ b/frontend/src/shell/ModelActivityPanel.test.tsx
@@ -54,6 +54,10 @@ test("uses the activity-only Markdown wrapping renderer for long content", () =>
   const renderers = document.querySelectorAll(".thot-activity-prose");
   expect(renderers).toHaveLength(3);
   expect(renderers[0]).toHaveClass("thot-prose");
+  for (const renderer of renderers) {
+    expect(renderer).toHaveClass("min-w-0", "w-full", "max-w-none");
+    expect(renderer).not.toHaveClass("max-w-[74ch]");
+  }
   expect(renderers[1].querySelector("code")).not.toBeNull();
   expect(renderers[2].querySelector("td")).not.toBeNull();
   expect(renderers[2].querySelector("pre")).not.toBeNull();
diff --git a/frontend/src/shell/ModelActivityPanel.tsx b/frontend/src/shell/ModelActivityPanel.tsx
index 5bfb3e56..da5f39d1 100644
--- a/frontend/src/shell/ModelActivityPanel.tsx
+++ b/frontend/src/shell/ModelActivityPanel.tsx
@@ -39,7 +39,7 @@ export function formatModelActivity(text: string): string {
 function MarkdownBody({ entry }: { entry: ActivityEntry }) {
   const tone = entry.kind === "thinking" ? "text-muted-foreground" : "text-foreground";
   return (
-    <div className={`thot-prose thot-activity-prose max-w-[74ch] text-sm ${tone}`}>
+    <div className={`thot-prose thot-activity-prose min-w-0 w-full max-w-none text-sm ${tone}`}>
       <ReactMarkdown remarkPlugins={[remarkGfm]}>{formatModelActivity(entry.text)}</ReactMarkdown>
     </div>
   );
@@ -47,7 +47,7 @@ function MarkdownBody({ entry }: { entry: ActivityEntry }) {
 
 function ActivityRow({ entry }: { entry: ActivityEntry }) {
   return (
-    <article className="border-b border-border/50 py-2 last:border-b-0">
+    <article className="w-full min-w-0 border-b border-border/50 py-2 last:border-b-0">
       <div className="mb-1 flex flex-wrap items-center gap-1 text-[0.65rem] font-semibold uppercase tracking-[0.08em] text-muted-foreground">
         <span className="text-foreground/80">{ACTIVITY_LABELS[entry.kind]}</span>
         {entry.phase && <span aria-label={`Phase ${entry.phase}`}>{entry.phase}</span>}
@@ -79,8 +79,8 @@ export function ModelActivityPanel({
 
   return (
     <aside className={desktopSplit
-      ? "static z-auto flex w-[var(--activity-panel-width)] shrink-0 flex-col border-r-0 bg-sidebar"
-      : "fixed inset-y-0 left-0 z-30 flex w-[min(90vw,24rem)] shrink-0 flex-col border-r border-border bg-sidebar"
+      ? "static z-auto flex min-w-0 w-[var(--activity-panel-width)] shrink-0 flex-col border-r-0 bg-sidebar"
+      : "fixed inset-y-0 left-0 z-30 flex min-w-0 w-[min(90vw,24rem)] shrink-0 flex-col border-r border-border bg-sidebar"
     }>
       <div className="flex items-center justify-between border-b border-border/60 px-3 py-2">
         <h2 className="font-heading text-sm font-semibold text-foreground">Model activity</h2>
@@ -93,7 +93,7 @@ export function ModelActivityPanel({
         data-testid="activity-scroll"
         tabIndex={0}
         aria-label="Model activity timeline"
-        className="flex-1 overflow-y-auto px-3 py-2 outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-ring/40"
+        className="w-full min-w-0 flex-1 overflow-y-auto px-3 py-2 outline-none focus-visible:ring-2 focus-visible:ring-inset focus-visible:ring-ring/40"
         onScroll={(event) => {
           followRef.current = isNearBottom(event.currentTarget);
         }}
diff --git a/frontend/src/shell/SessionDocumentsPanel.test.tsx b/frontend/src/shell/SessionDocumentsPanel.test.tsx
index 1407a7ea..bd853fbe 100644
--- a/frontend/src/shell/SessionDocumentsPanel.test.tsx
+++ b/frontend/src/shell/SessionDocumentsPanel.test.tsx
@@ -174,6 +174,10 @@ test("never renders technical approval, promotion, or memory decisions", async (
     { type: "table_approved", subject: "fact_a" },
     { type: "table_promoted", subject: "fact_a" },
     { type: "column_promoted", subject: "fact_a.id" },
+    { type: "cte_approved", subject: "eventi_device" },
+    { type: "sql_approved", subject: "phase:7" },
+    { type: "datamart_requested", subject: "phase:8" },
+    { type: "datamart_declined", subject: "phase:8" },
     { type: "memory_promoted", subject: "concetto" },
     { type: "column_excluded", subject: "fact_a.note", detail: "Non **pertinente**" },
   ].map((decision) => JSON.stringify(decision)).join("\n");
@@ -189,7 +193,17 @@ test("never renders technical approval, promotion, or memory decisions", async (
 
   expect(await screen.findByText("column excluded")).toBeInTheDocument();
   expect(screen.getByText("pertinente").tagName).toBe("STRONG");
-  for (const hidden of ["phase approved", "table approved", "table promoted", "column promoted", "memory promoted"]) {
+  for (const hidden of [
+    "phase approved",
+    "table approved",
+    "table promoted",
+    "column promoted",
+    "cte approved",
+    "sql approved",
+    "datamart requested",
+    "datamart declined",
+    "memory promoted",
+  ]) {
     expect(screen.queryByText(hidden)).not.toBeInTheDocument();
   }
 });
diff --git a/frontend/src/shell/SessionDocumentsPanel.tsx b/frontend/src/shell/SessionDocumentsPanel.tsx
index ab347dd3..336d883e 100644
--- a/frontend/src/shell/SessionDocumentsPanel.tsx
+++ b/frontend/src/shell/SessionDocumentsPanel.tsx
@@ -38,6 +38,10 @@ const HIDDEN_DECISION_TYPES = new Set([
   "table_approved",
   "table_promoted",
   "column_promoted",
+  "cte_approved",
+  "sql_approved",
+  "datamart_requested",
+  "datamart_declined",
 ]);
 
 function DocBody({ doc }: { doc: SessionDocument }) {
diff --git a/harness/tests/test_session_documents.py b/harness/tests/test_session_documents.py
index b69baeec..a7f8550b 100644
--- a/harness/tests/test_session_documents.py
+++ b/harness/tests/test_session_documents.py
@@ -85,6 +85,10 @@ def _rich_session(tmp_path):
         _decision(6, "table_promoted", "fact_procedure"),
         _decision(7, "column_promoted", "fact_procedure.status"),
         _decision(8, "column_excluded", "fact_procedure.note", "Non pertinente"),
+        _decision(9, "cte_approved", "eventi_device"),
+        _decision(10, "sql_approved", "phase:7"),
+        _decision(11, "datamart_requested", "phase:8"),
+        _decision(12, "datamart_declined", "phase:8"),
     ]
     (session_dir / "question.md").write_text(question)
     (session_dir / "sql_final.sql").write_text("SELECT COUNT(*) FROM fact_procedure")
@@ -160,6 +164,10 @@ def test_build_documents_groups_memories_and_filters_summary_decisions(tmp_path)
         "phase_approved",
         "table_promoted",
         "column_promoted",
+        "cte_approved",
+        "sql_approved",
+        "datamart_requested",
+        "datamart_declined",
     ):
         assert hidden not in decisions
 
diff --git a/harness/tht/session/store.py b/harness/tht/session/store.py
index c535d0e0..b72f2b84 100644
--- a/harness/tht/session/store.py
+++ b/harness/tht/session/store.py
@@ -162,6 +162,10 @@ _SUMMARY_HIDDEN_TYPES = _MEMORY_TYPES | frozenset(
         "table_approved",
         "table_promoted",
         "column_promoted",
+        "cte_approved",
+        "sql_approved",
+        "datamart_requested",
+        "datamart_declined",
     }
 )