Wave 7 interlude: prober tool-call chrome + live rename cluster labels

Graph tool-call visibility — the prober's list_sessions /
list_propositions rendered like nothing happened in the transcript
(the registry default is silence for unregistered tools). They now join
the EXACT read/ls/find/grep discipline: artifactRenderers maps both to
the ToolCallCard — collapsed one-liner, expandable Input/Output card.
The results ride the card's string path verbatim (the tools' own
compact name/level/date line format), exactly how read results render.

- list_propositions gets a headline arg: the session id is the call's
  subject — the collapsed line reads "list_propositions chat_…".
  Shown as given, never resolved (the same no-resolution rule as
  read's path). list_sessions carries no arg (empty input — the
  ls-with-no-path discipline).
- No bespoke row-layout card: the outputs are pre-formatted strings
  (the model-facing format IS the learner-facing format here), and
  the dispatch's "SAME look" directive settles the shape question.

Live rename labels — renaming a session anywhere (sidebar inline row,
chat header) already announces lh:chat-renamed {id, title}; the graph
view now listens. The birth-session partition means the title IS the
cluster label, so the patch is targeted and in-place, no refetch: the
snapshot's sessions map (the detail card's provenance line) and the
one matching cluster. The new snapshot object flows the existing
setData → geoVersion → rebuild chain, so the wrapped label (wave 7's
wrapRegionLabel) re-wraps for the new text. Unlabeled clusters keep
their hull-only silence — a null label is a GONE record, the guard
holds the line.

Tests: registry pins for both tools + the prober-card render (collapsed
headline, verbatim rows, no-arg discipline). 855/855; live-verified on
:3001 with fillText instrumentation: both cards render collapsed and
expandable in the transcript, and a sidebar rename flipped the canvas
cluster label old→new with the old label's draws stopping cold.

tests/demos.test.tsx

@@ -855,6 +855,42 @@ describe("tool + renderer registry wiring", () => {
 		for (const t of ["read", "ls", "find", "grep"]) {
 			assert.equal(artifactRenderers[t], ToolCallCard, `${t} renders the tool-call card`);
 		}
+		// wave 7 — the prober's graph tools join the SAME discipline (they
+		// rendered like nothing happened before this interlude)
+		for (const t of ["list_sessions", "list_propositions"]) {
+			assert.equal(artifactRenderers[t], ToolCallCard, `${t} renders the tool-call card`);
+		}
+	});
+
+	it("the tool-call card: the prober's graph tools — collapsed headline + their compact row output", () => {
+		// list_propositions: the session id is the call's subject
+		const propPart = {
+			type: "tool-list_propositions",
+			state: "output-available",
+			toolCallId: "g1",
+			input: { session: "chat_mtiudjao_776beada" },
+			output: "2 proposition(s) born in this session:\n- Kepler's laws — solid (as of 2026-09-20)\n- Tidal locking — shaky (as of 2026-09-21)",
+		};
+		const html = renderToStaticMarkup(<ToolCallCard part={propPart as never} />);
+		assert.match(html, /list_propositions/);
+		assert.match(html, /chat_mtiudjao_776beada/); // the collapsed headline
+		assert.match(html, /Kepler&#x27;s laws/); // the row output, verbatim (apostrophe HTML-escaped)
+		assert.ok(html.includes("<details"), "collapsed by default");
+
+		// list_sessions: no headline arg (empty input) — the tool name alone,
+		// exactly the ls-with-no-path discipline
+		const sessPart = {
+			type: "tool-list_sessions",
+			state: "output-available",
+			toolCallId: "g2",
+			input: {},
+			output: "3 session(s) in the knowledge graph, most recent first:\n1. Orbital mechanics (chat, 8 propositions, born 2026-09-18)",
+		};
+		const html2 = renderToStaticMarkup(<ToolCallCard part={sessPart as never} />);
+		assert.match(html2, /list_sessions/);
+		assert.match(html2, /Orbital mechanics/);
+		const headline = html2.split("<summary")[1]?.split("</summary>")[0] ?? "";
+		assert.doesNotMatch(headline, /Orbital/, "the collapsed line shows the tool name only — no noise");
 	});
 
 	it("the tool-call card: collapsed one-liner with the tool name + headline arg; expand shows input and output", () => {