compaction: not viewable — the dividers stay, inert (release polish 4)

Owner ruling (release polish round, 2026-10-06): the compaction
summary dialog is gone. The content is model-facing plumbing — anyone
who wants to inspect it reads their provider logs. Both dividers
survive as INERT markers: the moment divider's 'Context compacted'
note and the cut divider's 'HISTORY COMPACTED · 152k tok' seam chip
render as plain text; no button, no dialog, no state. The marker parts
and the server fold are untouched — this is a pure render-side
removal.

Pins: dividers render without <button> or cursor affordances, and the
marker's summary text never reaches the DOM. 1427 tests, tsc, lint,
build green.

tests/render-compaction-divider.test.tsx

@@ -1,15 +1,16 @@
 /**
- * THE COMPACTION DIVIDERS — SSR render pins (owner round 14). Two ruled
- * surfaces from one marker: the MOMENT divider (minimal centered small
- * text, the retrying-message register — no rule lines) where the user
- * is when compaction lands, and the CUT divider (the longer one —
- * phase-divider geometry, dotted rules + a chip carrying the summarized
- * token count) at the kept boundary. Both open the same summary dialog
- * (the marker's full model-facing content, verbatim, scrollable).
+ * THE COMPACTION DIVIDERS — SSR render pins (owner round 14; inert since
+ * release polish 2026-10-06). Two ruled surfaces from one marker: the
+ * MOMENT divider (minimal centered small text, the retrying-message
+ * register — no rule lines) where the user is when compaction lands, and
+ * the CUT divider (the longer one — phase-divider geometry, dotted rules
+ * + a chip carrying the summarized token count) at the kept boundary.
  *
- * The dialog portals to document.body at z-50; SSR renders null when
- * closed — the pins hold the open state through a jsdom-free server
- * render (createPortal is a no-op passthrough on the server).
+ * NOT VIEWABLE (owner, 2026-10-06): the summary dialog is gone — the
+ * compaction content is model-facing plumbing; anyone who wants to
+ * inspect it reads their provider logs. The pins below hold the
+ * dividers INERT: plain markup, no button, no affordance, and the
+ * marker's summary text never reaches the DOM.
  */
 
 import React from "react";
@@ -21,8 +22,6 @@ import { describe, it } from "node:test";
 import {
 	CompactionCutDivider,
 	CompactionMomentDivider,
-	CompactionSummaryBody,
-	CompactionSummaryDialog,
 	type CompactionDividerData,
 } from "../components/compaction-divider.tsx";
 
@@ -35,9 +34,11 @@ const data: CompactionDividerData = {
 	},
 };
 
+const INERT = ["no click affordance survives the 2026-10-06 ruling"];
+
 describe("CompactionMomentDivider", () => {
 	it("renders the minimal centered note — no rule lines, retrying-message register", () => {
-		const html = renderToStaticMarkup(<CompactionMomentDivider data={data} onOpen={() => {}} />);
+		const html = renderToStaticMarkup(<CompactionMomentDivider data={data} />);
 		assert.ok(html.includes('data-testid="compaction-divider"'));
 		assert.ok(html.includes("Context compacted"));
 		// NO horizontal rule (the owner ruling: minimal, unlike the cut)
@@ -47,7 +48,7 @@ describe("CompactionMomentDivider", () => {
 
 describe("CompactionCutDivider", () => {
 	it("renders the longer seam — dotted rules + chip with the token count", () => {
-		const html = renderToStaticMarkup(<CompactionCutDivider data={data} onOpen={() => {}} />);
+		const html = renderToStaticMarkup(<CompactionCutDivider data={data} />);
 		assert.ok(html.includes('data-testid="compaction-cut-divider"'));
 		assert.ok(html.includes("border-t-2 border-dotted"));
 		assert.ok(html.includes("History compacted"));
@@ -56,17 +57,24 @@ describe("CompactionCutDivider", () => {
 	});
 });
 
-describe("CompactionSummaryDialog", () => {
-	it("renders the marker content verbatim, scrollable (the pure body — portals need document)", () => {
-		const html = renderToStaticMarkup(
-			<CompactionSummaryBody summary={data} onClose={() => {}} />,
-		);
-		assert.ok(html.includes('data-testid="compaction-summary-dialog"'));
-		assert.ok(html.includes("[SESSION HISTORY COMPACTED]"));
-		assert.ok(html.includes("overflow-y-auto"));
-		assert.ok(html.includes('data-testid="compaction-summary-close"'));
+describe("not viewable (owner, release polish 2026-10-06)", () => {
+	it("neither divider is a button — plain markup, no click affordance", () => {
+		for (const html of [
+			renderToStaticMarkup(<CompactionMomentDivider data={data} />),
+			renderToStaticMarkup(<CompactionCutDivider data={data} />),
+		]) {
+			assert.ok(!html.includes("<button"), INERT[0]);
+			assert.ok(!html.includes("cursor-pointer"), INERT[0]);
+		}
 	});
-	it("renders nothing when closed", () => {
-		assert.equal(renderToStaticMarkup(<CompactionSummaryDialog summary={null} onClose={() => {}} />), "");
+
+	it("the marker's summary text never reaches the DOM — provider logs are the inspection path", () => {
+		for (const html of [
+			renderToStaticMarkup(<CompactionMomentDivider data={data} />),
+			renderToStaticMarkup(<CompactionCutDivider data={data} />),
+		]) {
+			assert.ok(!html.includes("[SESSION HISTORY COMPACTED]"), "the header stays out");
+			assert.ok(!html.includes("THE LEARNER"), "the summary stays out");
+		}
 	});
 });