Wave 7 close-out: the graphTools surface, wrapped cluster labels, the orphan sweep

Part 1 — the surface:
- Settings ▸ Agent ▸ Tools gains the prober GRAPH-TOOLS row as its FIRST
  row (owner ruling: in the Tools section, not the tool-toggles list —
  its subject is the map, its mechanism is agent capability). Writes
  agent.graphTools {enabled} (absent = on, the toggle discipline) via
  the section PUT; composeGraphTools pure seam. Its own key in the agent
  contract — never in the tools map.
- The row carries the search-row hint discipline: "Connects prior
  sessions' knowledge into new ones — the prober reads the knowledge
  map" (owner wording). The honest interplay composes both: when
  graph.enabled is off the row dims + disables with a "Graph is
  disabled" hint (the effective gate itself is server-side, per-turn
  fresh). AgentSection reads the graph section (record.graph, passed by
  the dialog) — read-only.
- Cluster labels wrap: wave 7 made labels session names and FILE PATHS,
  which the old single-line fillText could not bound. wrapRegionLabel
  (pure, exported): word-wrap first, char-split long paths (the
  node-label discipline), capped at 3 lines, overflow folded into an
  ellipsized last line (owner: wrap, cap 2–3, ellipsize). Pre-wrapped
  once per geometry build at the SCREEN-fixed size (viewer-relative
  labels — the wrap never goes stale mid-camera-move), drawn centered
  line-by-line at the centroid. Deleted-session clusters keep their
  hull-only honest silence (label null → no lines).
- The orphan sweep: StatsBar's leftSlot prop is dead (its one consumer,
  the knowledge-context slider, died in c690181) — removed, and pre-chat
  views now render NOTHING on the left (owner ruling this round: a
  "— · —" summary over an empty popover is pure noise) — the dictation
  middle just widens. Stale knowledge-context comments swept in
  chat.tsx (adoption-window + activity-nudge docs), activity-dock.tsx
  (useActivity ground rules), dictation.tsx (×2 adaptive-meter docs),
  home.tsx (pre-chat dock comment).

Part 2 — Teacher's c690181 review: clean. Imports, KIND_ICON/KIND_LABEL
entries, render branches and event seams all excised whole; the probe-
handoff branch re-indented intact and merge-adopted; tests updated in
lockstep (merge-adopted, record-adapter, render-new-session retired).
Platform's 4b60e0f roster-string fixes (labeler dropped from both
SLOT_META blocks) reviewed — consistent across agent-section +
setup-dialog.

Gates: tsc clean, 854/854 (8 new: wrapRegionLabel cases, graphTools
SSR rows ×3; stats-bar + ladder fixtures updated to the new rulings),
lint 0, build ok. Live on :3001: graphTools row first-in-group with
hint, off→{enabled:false}→on round-trip, graph-off dimming + hint +
disabled toggle, pre-chat rows summary-free, chat view keeps its
summary, long-title cluster label wrapped without console errors
(visual read unavailable this session — pure wrap is unit-pinned).

components/chat.tsx

@@ -402,8 +402,8 @@ export function Chat({
 	}, [chatId, setMessages, sendMessage, status]);
 
 	// ── Append-only record adoption (owner ground rules, 2026-09-15) ──
-	// Content delivered into the record server-side — the knowledge-context
-	// block, sub-agent artifacts, abort notes — must become visible the
+	// Content delivered into the record server-side — sub-agent
+	// artifacts, abort notes — must become visible the
 	// moment it persists, mid-turn included: it sits between messages, and
 	// nothing about a running turn should hide it. The full snapshot sync
 	// mid-stream is forbidden (it breaks the SDK's in-place continuation
@@ -431,8 +431,8 @@ export function Chat({
 	// self-terminating window of three record fetches (400ms/1s/2s) catches
 	// the insert and shows the marker during the turn, then stops. No
 	// standing poll — the window exists only for these seconds. The same
-	// instant nudges the activity feed: the knowledge-context job starts at
-	// send (server-side), and the dock must say so immediately.
+	// instant nudges the activity feed: extraction and sub-agent jobs
+	// start at send (server-side), and the dock must say so immediately.
 	const { refresh: refreshActivity } = useActivity();
 	const turnStartStatusRef = useRef(status);
 	// The window must survive the submitted→streaming flip (the stream starts