From 326c30cd819c1ddba55c481a80c9e9293931aa70 Mon Sep 17 00:00:00 2001
From: Cursor Agent <cursoragent@cursor.com>
Date: Wed, 22 Jul 2026 05:34:44 +0000
Subject: [PATCH 1/3] perf(test): run unit test files in parallel

Drop the shared fileParallelism: false so node-unit and workers-unit
files run across all cores. The serialized run spent 180s of its 310s
CI duration on module imports alone; parallel workers cut the suite
from ~196s to ~82s locally. The mcp-e2e project keeps fileParallelism
disabled explicitly because each file boots a real Wrangler dev server
against the shared seeded e2e database.
---
 vitest-shared.ts         | 1 -
 vitest.mcp-e2e.config.ts | 3 +++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/vitest-shared.ts b/vitest-shared.ts
index 4f35fe1ae2..29c69fdb43 100644
--- a/vitest-shared.ts
+++ b/vitest-shared.ts
@@ -45,7 +45,6 @@ export const sharedProjectConfig = {
 	test: {
 		testTimeout,
 		hookTimeout: testTimeout,
-		fileParallelism: false,
 		clearMocks: true,
 		mockReset: true,
 		setupFiles: [
diff --git a/vitest.mcp-e2e.config.ts b/vitest.mcp-e2e.config.ts
index cfebef71d8..81053bc5f3 100644
--- a/vitest.mcp-e2e.config.ts
+++ b/vitest.mcp-e2e.config.ts
@@ -15,6 +15,9 @@ export default mergeConfig(
 			include: ['**/*.mcp-e2e.test.ts'],
 			testTimeout: mcpE2eTimeout,
 			hookTimeout: mcpE2eTimeout,
+			// Each file boots a real Wrangler dev server and shares the seeded
+			// e2e database, so files must not run in parallel.
+			fileParallelism: false,
 		},
 	}),
 )

From 8649cc255fc98a31ec8e47c43821db95658fd954 Mon Sep 17 00:00:00 2001
From: Cursor Agent <cursoragent@cursor.com>
Date: Wed, 22 Jul 2026 05:34:45 +0000
Subject: [PATCH 2/3] fix(nx): include root vitest configs in test cache inputs

The worker:test and worker:test-mcp targets only hashed project files,
so edits to vitest*.ts configs or tools/ (which hold vite plugins and
root-level test files picked up by the runner) returned stale cache
hits.
---
 nx.json | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/nx.json b/nx.json
index d739c183b3..7a1c0754bd 100644
--- a/nx.json
+++ b/nx.json
@@ -15,10 +15,22 @@
 			"cache": true
 		},
 		"test": {
-			"cache": true
+			"cache": true,
+			"inputs": [
+				"default",
+				"^default",
+				"{workspaceRoot}/vitest*.ts",
+				"{workspaceRoot}/tools/**/*"
+			]
 		},
 		"test-mcp": {
-			"cache": true
+			"cache": true,
+			"inputs": [
+				"default",
+				"^default",
+				"{workspaceRoot}/vitest*.ts",
+				"{workspaceRoot}/tools/**/*"
+			]
 		},
 		"prepare-e2e-env": {
 			"cache": true

From e52169dff6b077473b24c1a1bc884d5e927ae186 Mon Sep 17 00:00:00 2001
From: Cursor Agent <cursoragent@cursor.com>
Date: Wed, 22 Jul 2026 05:48:47 +0000
Subject: [PATCH 3/3] fix(test): give CI headroom for e2e server startup under
 parallel unit tests

The parallel unit test workers saturate all 4 CI cores at the start of
validate, and the Playwright webServer (client build + D1 migrations +
Wrangler boot) timed out at the default 60s. Raise the webServer budget
to 180s in CI and cap vitest at 3 workers there so Wrangler startup is
not starved.
---
 playwright.config.ts | 4 ++++
 vitest-shared.ts     | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/playwright.config.ts b/playwright.config.ts
index 31f06400c4..a98ee1f939 100644
--- a/playwright.config.ts
+++ b/playwright.config.ts
@@ -27,6 +27,10 @@ export default defineConfig({
 	webServer: {
 		command: webServerCommand,
 		url: baseURL,
+		// Startup (client build + D1 migrations + Wrangler boot) competes with
+		// the parallel unit test workers at the beginning of `validate`, and the
+		// default 60s budget times out on 4-core CI runners.
+		timeout: process.env.CI ? 180_000 : 60_000,
 		reuseExistingServer: hasExplicitBaseUrl,
 		env: {
 			CLOUDFLARE_ENV: 'test',
diff --git a/vitest-shared.ts b/vitest-shared.ts
index 29c69fdb43..cea630a07c 100644
--- a/vitest-shared.ts
+++ b/vitest-shared.ts
@@ -45,6 +45,10 @@ export const sharedProjectConfig = {
 	test: {
 		testTimeout,
 		hookTimeout: testTimeout,
+		// `validate` runs this suite concurrently with Playwright and two
+		// Wrangler servers on 4-core CI runners; leave a core free so their
+		// startup is not starved by test workers.
+		maxWorkers: process.env.CI ? 3 : undefined,
 		clearMocks: true,
 		mockReset: true,
 		setupFiles: [