diff --git a/packages/editor/src/lib/history.test.ts b/packages/editor/src/lib/history.test.ts
index 65768e5141..d7191f452b 100644
--- a/packages/editor/src/lib/history.test.ts
+++ b/packages/editor/src/lib/history.test.ts
@@ -14,14 +14,21 @@ function runSourceHistoryTest(body: string) {
       import assert from 'node:assert/strict'
       import { mock } from 'bun:test'
       import { fileURLToPath, pathToFileURL } from 'node:url'
-      const consumers = [
-        ${JSON.stringify(resolve(import.meta.dir, 'history.ts'))},
-        ${JSON.stringify(resolve(import.meta.dir, '../../../core/src/index.ts'))},
-        ${JSON.stringify(resolve(import.meta.dir, '../../../viewer/src/systems/wall/wall-system.tsx'))},
-        ${JSON.stringify(resolve(import.meta.dir, '../../../nodes/src/shared/node-batch/system.tsx'))},
+      const editorConsumer = ${JSON.stringify(resolve(import.meta.dir, 'history.ts'))}
+      const coreConsumer = ${JSON.stringify(resolve(import.meta.dir, '../../../core/src/index.ts'))}
+      const viewerConsumer = ${JSON.stringify(resolve(import.meta.dir, '../../../viewer/src/systems/wall/wall-system.tsx'))}
+      const nodesConsumer = ${JSON.stringify(resolve(import.meta.dir, '../../../nodes/src/shared/node-batch/system.tsx'))}
+      const peerConsumers = [editorConsumer, coreConsumer, viewerConsumer, nodesConsumer]
+      // Resolve only from declared consumers; isolated installs cannot see sibling dependencies.
+      const sharedConsumers = [
+        ['@pascal-app/core', [editorConsumer, viewerConsumer, nodesConsumer]],
+        ['@pascal-app/viewer', [editorConsumer, nodesConsumer]],
+        ['react', peerConsumers],
+        ['three', peerConsumers],
+        ['@react-three/fiber', peerConsumers],
       ]
       const sharedPaths = new Map(
-        ['@pascal-app/core', '@pascal-app/viewer', 'react', 'three', '@react-three/fiber'].map(specifier => [
+        sharedConsumers.map(([specifier, consumers]) => [
           specifier,
           [...new Set(consumers.map(consumer => fileURLToPath(import.meta.resolve(specifier, pathToFileURL(consumer).href))))],
         ]),
diff --git a/packages/nodes/src/lean-to-extension/mono-j-rendering.test.ts b/packages/nodes/src/lean-to-extension/mono-j-rendering.test.ts
index 8acbbb06d1..20e2a2eb10 100644
--- a/packages/nodes/src/lean-to-extension/mono-j-rendering.test.ts
+++ b/packages/nodes/src/lean-to-extension/mono-j-rendering.test.ts
@@ -221,33 +221,33 @@ describe('continuous mono canopy rendering', () => {
     expect(extendedChain.overlaps).toBe(0)
   })
 
-  test('miters either turn and slope direction throughout the angle range', () => {
-    for (const angle of Array.from({ length: 90 }, (_, index) => 90 - index)) {
-      const radians = (angle * Math.PI) / 180
-      const corner: Pt = [8, 0]
-      const forwardEnd: Pt = [8 + 6 * Math.cos(radians), 6 * Math.sin(radians)]
-      const mirroredEnd: Pt = [8 + 6 * Math.cos(radians), -6 * Math.sin(radians)]
-      const paths = [
-        [[0, 0] as Pt, corner, forwardEnd],
-        [forwardEnd, corner, [0, 0] as Pt],
-        [[0, 0] as Pt, corner, mirroredEnd],
-        [mirroredEnd, corner, [0, 0] as Pt],
-      ]
-
-      for (const [pathIndex, points] of paths.entries()) {
-        for (const flipProjection of [false, true]) {
-          const result = buildCanopy(
-            `angle_${angle}_path_${pathIndex}_flip_${flipProjection}`,
-            points,
-            flipProjection,
-          )
-          expect(result.holes).toBe(0)
-          expect(result.overlaps).toBe(0)
-          expect(result.totalVertical).toBeLessThan(0.05)
-        }
+  test.each(
+    Array.from({ length: 90 }, (_, index) => 90 - index),
+  )('miters either turn and slope direction at %i degrees', (angle) => {
+    const radians = (angle * Math.PI) / 180
+    const corner: Pt = [8, 0]
+    const forwardEnd: Pt = [8 + 6 * Math.cos(radians), 6 * Math.sin(radians)]
+    const mirroredEnd: Pt = [8 + 6 * Math.cos(radians), -6 * Math.sin(radians)]
+    const paths = [
+      [[0, 0] as Pt, corner, forwardEnd],
+      [forwardEnd, corner, [0, 0] as Pt],
+      [[0, 0] as Pt, corner, mirroredEnd],
+      [mirroredEnd, corner, [0, 0] as Pt],
+    ]
+
+    for (const [pathIndex, points] of paths.entries()) {
+      for (const flipProjection of [false, true]) {
+        const result = buildCanopy(
+          `angle_${angle}_path_${pathIndex}_flip_${flipProjection}`,
+          points,
+          flipProjection,
+        )
+        expect(result.holes).toBe(0)
+        expect(result.overlaps).toBe(0)
+        expect(result.totalVertical).toBeLessThan(0.05)
       }
     }
-  }, 15_000)
+  })
 
   // J-shapes and closed loops use the same corner partitioning as an L at each end.
   const multiJointShapes: Record<string, Pt[]> = {
diff --git a/packages/nodes/src/shared/node-batch/source-systems.test.ts b/packages/nodes/src/shared/node-batch/source-systems.test.ts
index c6d7d69ac8..0915d74296 100644
--- a/packages/nodes/src/shared/node-batch/source-systems.test.ts
+++ b/packages/nodes/src/shared/node-batch/source-systems.test.ts
@@ -23,13 +23,19 @@ function runSourceTest(body: string) {
 
     // Isolated installs can give each tested package its own peer module instance.
     // Share the viewer's instance across every resolved path before loading consumers.
-    const consumers = [
-      ${sourcePath('packages/viewer/src/lib/materials.ts')},
-      ${sourcePath('packages/nodes/src/shared/node-batch/system.tsx')},
-      ${sourcePath('packages/editor/src/components/editor/selection-manager.tsx')},
+    const viewerConsumer = ${sourcePath('packages/viewer/src/lib/materials.ts')}
+    const nodesConsumer = ${sourcePath('packages/nodes/src/shared/node-batch/system.tsx')}
+    const editorConsumer = ${sourcePath('packages/editor/src/components/editor/selection-manager.tsx')}
+    const consumers = [viewerConsumer, nodesConsumer, editorConsumer]
+    const sharedConsumers = [
+      ['react', consumers],
+      ['three', consumers],
+      ['@react-three/fiber', consumers],
+      ['@pascal-app/core', consumers],
+      ['@pascal-app/viewer', [nodesConsumer, editorConsumer]],
     ]
     const sharedPaths = new Map(
-      ['react', 'three', '@react-three/fiber', '@pascal-app/core', '@pascal-app/viewer'].map((specifier) => [
+      sharedConsumers.map(([specifier, consumers]) => [
         specifier,
         [...new Set(consumers.map((consumer) => fileURLToPath(import.meta.resolve(specifier, pathToFileURL(consumer).href))))],
       ]),