diff --git a/packages/factory/src/client/visualizations/catwalk/constants/__tests__/dimensions.test.ts b/packages/factory/src/client/visualizations/catwalk/constants/__tests__/dimensions.test.ts
new file mode 100644
index 00000000..3de88109
--- /dev/null
+++ b/packages/factory/src/client/visualizations/catwalk/constants/__tests__/dimensions.test.ts
@@ -0,0 +1,76 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  AGENT_RADIUS,
+  ART_H,
+  ART_W,
+  CANVAS_H,
+  CANVAS_W,
+  CATWALK_Y,
+  CHUTE_BOT,
+  CHUTE_TOP,
+  GATE_W,
+  GROUND_Y,
+  LAYOUT_MARGIN,
+  ORCH_RADIUS,
+  STATION_GAP,
+} from '../dimensions.js';
+
+describe('canvas dimensions', () => {
+  it('has CANVAS_W equal to 1400', () => {
+    expect(CANVAS_W).toBe(1400);
+  });
+
+  it('has CANVAS_H equal to 540', () => {
+    expect(CANVAS_H).toBe(540);
+  });
+});
+
+describe('derived vertical positions', () => {
+  it('derives CHUTE_TOP as CATWALK_Y + 48', () => {
+    expect(CHUTE_TOP).toBe(CATWALK_Y + 48);
+  });
+
+  it('derives CHUTE_BOT as GROUND_Y - 20', () => {
+    expect(CHUTE_BOT).toBe(GROUND_Y - 20);
+  });
+});
+
+describe('anchor values', () => {
+  it('has CATWALK_Y equal to 100', () => {
+    expect(CATWALK_Y).toBe(100);
+  });
+
+  it('has GROUND_Y equal to 340', () => {
+    expect(GROUND_Y).toBe(340);
+  });
+});
+
+describe('entity sizing', () => {
+  it('has positive AGENT_RADIUS', () => {
+    expect(AGENT_RADIUS).toBeGreaterThan(0);
+  });
+
+  it('has ORCH_RADIUS greater than AGENT_RADIUS', () => {
+    expect(ORCH_RADIUS).toBeGreaterThan(AGENT_RADIUS);
+  });
+
+  it('has positive artifact dimensions', () => {
+    expect(ART_W).toBeGreaterThan(0);
+    expect(ART_H).toBeGreaterThan(0);
+  });
+
+  it('has positive GATE_W', () => {
+    expect(GATE_W).toBeGreaterThan(0);
+  });
+});
+
+describe('layout margins', () => {
+  it('has positive LAYOUT_MARGIN', () => {
+    expect(LAYOUT_MARGIN).toBeGreaterThan(0);
+  });
+
+  it('has positive STATION_GAP', () => {
+    expect(STATION_GAP).toBeGreaterThan(0);
+  });
+});
diff --git a/packages/factory/src/client/visualizations/catwalk/constants/__tests__/timing.test.ts b/packages/factory/src/client/visualizations/catwalk/constants/__tests__/timing.test.ts
new file mode 100644
index 00000000..c0c182bf
--- /dev/null
+++ b/packages/factory/src/client/visualizations/catwalk/constants/__tests__/timing.test.ts
@@ -0,0 +1,21 @@
+import { describe, expect, it } from 'vitest';
+
+import { CHUTE_DURATION, PAUSE_DURATION, WALK_SPEED, WORK_DURATION } from '../timing.js';
+
+describe('timing constants', () => {
+  it('has WALK_SPEED equal to 400 pixels per second', () => {
+    expect(WALK_SPEED).toBe(400);
+  });
+
+  it('has CHUTE_DURATION equal to 600 milliseconds', () => {
+    expect(CHUTE_DURATION).toBe(600);
+  });
+
+  it('has WORK_DURATION equal to 1200 milliseconds', () => {
+    expect(WORK_DURATION).toBe(1200);
+  });
+
+  it('has PAUSE_DURATION equal to 300 milliseconds', () => {
+    expect(PAUSE_DURATION).toBe(300);
+  });
+});
diff --git a/packages/factory/src/client/visualizations/catwalk/constants/dimensions.ts b/packages/factory/src/client/visualizations/catwalk/constants/dimensions.ts
new file mode 100644
index 00000000..48890cb9
--- /dev/null
+++ b/packages/factory/src/client/visualizations/catwalk/constants/dimensions.ts
@@ -0,0 +1,20 @@
+// Canvas dimensions
+export const CANVAS_W = 1400;
+export const CANVAS_H = 540;
+
+// Vertical positions
+export const CATWALK_Y = 100;
+export const GROUND_Y = 340;
+export const CHUTE_TOP = CATWALK_Y + 48;
+export const CHUTE_BOT = GROUND_Y - 20;
+
+// Entity sizing
+export const AGENT_RADIUS = 14;
+export const ORCH_RADIUS = 16;
+export const ART_W = 40;
+export const ART_H = 16;
+export const GATE_W = 6;
+
+// Layout margins
+export const LAYOUT_MARGIN = 100;
+export const STATION_GAP = 30;
diff --git a/packages/factory/src/client/visualizations/catwalk/constants/timing.ts b/packages/factory/src/client/visualizations/catwalk/constants/timing.ts
new file mode 100644
index 00000000..5e31a8cf
--- /dev/null
+++ b/packages/factory/src/client/visualizations/catwalk/constants/timing.ts
@@ -0,0 +1,11 @@
+/** Walk speed in pixels per second. */
+export const WALK_SPEED = 400;
+
+/** Duration of a chute animation in milliseconds. */
+export const CHUTE_DURATION = 600;
+
+/** Duration of a work animation in milliseconds. */
+export const WORK_DURATION = 1200;
+
+/** Duration of a pause between actions in milliseconds. */
+export const PAUSE_DURATION = 300;
diff --git a/packages/factory/src/shared/constants/__tests__/artifact-colors.test.ts b/packages/factory/src/shared/constants/__tests__/artifact-colors.test.ts
new file mode 100644
index 00000000..aa4d9eba
--- /dev/null
+++ b/packages/factory/src/shared/constants/__tests__/artifact-colors.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, it } from 'vitest';
+
+import { ARTIFACT_COLORS, type ArtifactColorKey } from '../artifact-colors.js';
+
+const EXPECTED_KEYS: readonly ArtifactColorKey[] = [
+  'reqs',
+  'xplan',
+  'arch',
+  'plan',
+  'code',
+  'review',
+  'fixes',
+  'clean',
+  'holi',
+  'summary',
+];
+
+describe('ARTIFACT_COLORS', () => {
+  it('contains exactly the expected set of keys', () => {
+    // eslint-disable-next-line unicorn/no-array-sort -- toSorted() unavailable in configured Node range
+    expect(Object.keys(ARTIFACT_COLORS).sort()).toEqual([...EXPECTED_KEYS].sort());
+  });
+
+  it('maps every key to a valid 6-digit hex color', () => {
+    for (const value of Object.values(ARTIFACT_COLORS)) {
+      expect(value).toMatch(/^#[0-9a-f]{6}$/i);
+    }
+  });
+
+  it('maps each key to a distinct color', () => {
+    const values = Object.values(ARTIFACT_COLORS);
+    expect(new Set(values).size).toBe(values.length);
+  });
+});
diff --git a/packages/factory/src/shared/constants/artifact-colors.ts b/packages/factory/src/shared/constants/artifact-colors.ts
new file mode 100644
index 00000000..bf9fd544
--- /dev/null
+++ b/packages/factory/src/shared/constants/artifact-colors.ts
@@ -0,0 +1,15 @@
+/** Mapping from artifact type to pastel display color. */
+export const ARTIFACT_COLORS = {
+  reqs: '#dee2e6',
+  xplan: '#d0ebff',
+  arch: '#a5d8ff',
+  plan: '#b2f2bb',
+  code: '#fff3bf',
+  review: '#ffc9c9',
+  fixes: '#ffe8cc',
+  clean: '#f3d9fa',
+  holi: '#c3fae8',
+  summary: '#f8f9fa',
+} as const;
+
+export type ArtifactColorKey = keyof typeof ARTIFACT_COLORS;