fix(observatory): dense real memory field + hold the verdict card

Two demo-readiness fixes so the Observatory reads as a living brain
doing real work, not a sparse placeholder:

1. Graph query switched from sort=recent to sort=connected (max_nodes
   200). 'recent' centered on the newest memory, a lonely node whose
   depth-3 neighborhood is only ~12 nodes, so the field looked empty.
   'connected' surfaces the populous hotspot: ~148 real memories and
   ~2865 real edges, laid out as two dense clusters. Verified live on
   recall-path and salience-rescue: 148 nodes / 2865 edges at 110-119fps.

2. Verdict card now holds. The 'root cause found' card faded fully out
   by frame 660 in a 720-frame (12s) loop, so it flashed for ~1s then
   vanished. Widened the default fade window to [600,620,705,719]: it
   fades in, holds fully readable through the field's decay to rest, and
   only fades out just before the seamless loop wrap. ~1.75s of readable
   verdict instead of a blink. GPU envelopes and the seam-zero loop test
   are unaffected (DOM overlay window is independent of the sim).

Verified live against the real brain: 96 observatory tests green, zero
console errors, verdict readable at frames 660 and 695 (both blank before).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/dashboard/src/lib/observatory/overlays/RescueVerdict.svelte

@@ -28,7 +28,12 @@
 	let {
 		frame = 0,
 		verdict,
-		fadeWindow = [600, 615, 645, 660],
+		// Hold the verdict on screen for the REST of the loop, not a ~1s flash.
+		// Fade in over 600→620, hold fully readable through the field's decay to
+		// rest, then fade out just before the seamless wrap (705→719, back to 0
+		// at 719 so the loop seam stays clean). This is the demo money-card: the
+		// viewer needs seconds to read "root cause found", not a blink.
+		fadeWindow = [600, 620, 705, 719],
 		tone = 'triumph'
 	}: Props = $props();
 

apps/dashboard/src/routes/(app)/observatory/+page.svelte

@@ -62,10 +62,15 @@
 		loading = true;
 		error = '';
 		try {
+			// Pull the DENSE real subgraph (the well-connected hotspot), not the
+			// newest-memory neighborhood — 'recent' centers on a lonely fresh node
+			// (~12 nodes), while 'connected' surfaces the populous, edge-rich field
+			// (~150 real memories, thousands of edges) so the Observatory reads as
+			// a living brain doing real work, not a sparse placeholder.
 			const data = await api.graph({
-				max_nodes: 300,
+				max_nodes: 200,
 				depth: 3,
-				sort: 'recent'
+				sort: 'connected'
 			});
 			graphData = data;
 			nodeCount = data.nodeCount;