fix: widen graph layout - stronger charge repulsion, weaker centering, larger spiral spread

- chargeStrength: -1500 -> -2500 for more node repulsion
- centeringStrength: 0.25 -> 0.08 so clusters don't collapse
- spiralScale: sqrt(n)*25 -> sqrt(n)*60 for wider initial spread
- MEMORY_ORBIT_BASE: 120 -> 200 with 120px randomness range
- linkDistance: 200 -> 300, docMemoryDistance: 150 -> 220
- Weaker link strengths to let charge dominate
- preSettleTicks: 120 -> 250 for better initial layout

packages/memory-graph/src/constants.ts

@@ -9,22 +9,22 @@ export const MEMORY_BORDER_KEYS = {
 
 export const FORCE_CONFIG = {
 	linkStrength: {
-		docMemory: 0.25,
-		version: 0.8,
-		docDocBase: 0.15,
-		fallback: 0.15,
+		docMemory: 0.12,
+		version: 0.5,
+		docDocBase: 0.08,
+		fallback: 0.08,
 	},
-	linkDistance: 200,
-	docMemoryDistance: 150,
-	chargeStrength: -1500,
-	collisionRadius: { document: 60, memory: 30 },
-	collisionStrength: 0.6,
-	centeringStrength: 0.25,
-	alphaDecay: 0.04,
+	linkDistance: 300,
+	docMemoryDistance: 220,
+	chargeStrength: -2500,
+	collisionRadius: { document: 70, memory: 35 },
+	collisionStrength: 0.7,
+	centeringStrength: 0.08,
+	alphaDecay: 0.025,
 	alphaMin: 0.001,
-	velocityDecay: 0.6,
+	velocityDecay: 0.45,
 	alphaTarget: 0.3,
-	preSettleTicks: 120,
+	preSettleTicks: 250,
 }
 
 export const GRAPH_SETTINGS = {

packages/memory-graph/src/hooks/use-graph-data.ts

@@ -11,7 +11,7 @@ import type {
 
 const SEVEN_DAYS_MS = 7 * 24 * 60 * 60 * 1000
 const ONE_DAY_MS = 24 * 60 * 60 * 1000
-const MEMORY_ORBIT_BASE = 120
+const MEMORY_ORBIT_BASE = 200
 
 export function getMemoryBorderColor(
 	mem: GraphApiMemory,
@@ -86,9 +86,9 @@ export function useGraphData(
 		const cx = canvasWidth / 2
 		const cy = canvasHeight / 2
 		const docCount = documents.length
-		// Compact spiral -- just enough to avoid overlap. The simulation
-		// handles the final spread via charge repulsion.
-		const spiralScale = Math.sqrt(docCount) * 25
+		// Wide spiral so documents start well-separated. The simulation
+		// refines positions but the initial spread prevents clustering.
+		const spiralScale = Math.sqrt(docCount) * 60
 		// Golden angle (~137.5 deg) produces optimal packing in a spiral
 		const goldenAngle = Math.PI * (3 - Math.sqrt(5))
 
@@ -149,7 +149,7 @@ export function useGraphData(
 					// with slight randomness from hash for organic feel
 					const memAngle =
 						(i / memCount) * 2 * Math.PI + hashToUnit(mem.id) * 0.5
-					const memRadius = MEMORY_ORBIT_BASE + hashToUnit(`${mem.id}-r`) * 60
+					const memRadius = MEMORY_ORBIT_BASE + hashToUnit(`${mem.id}-r`) * 120
 					memNode = {
 						id: mem.id,
 						type: "memory",