test(db): clear env before each loadWorkspaceEnv test, not just after

CI inherits DATABASE_URL from the outer shell (capakraken_test URL).
loadWorkspaceEnv uses dotenv semantics — pre-existing process.env wins
over .env file contents — so the first test's assertion
'DATABASE_URL === postgres://from-env' failed only in CI. Moving
clearEnv into beforeEach makes the test order-independent and
immune to inherited env. Reproduced by running the suite locally
with DATABASE_URL exported.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/db/src/load-workspace-env.test.ts

@@ -1,17 +1,11 @@
-import { afterEach, describe, it } from "node:test";
+import { afterEach, beforeEach, describe, it } from "node:test";
 import assert from "node:assert/strict";
 import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { loadWorkspaceEnv, resolveWorkspaceEnvPaths } from "./load-workspace-env.js";
 
-const envKeys = [
-  "DATABASE_URL",
-  "SHARED_VALUE",
-  "LOCAL_ONLY",
-  "MODE_ONLY",
-  "MODE_LOCAL_ONLY",
-];
+const envKeys = ["DATABASE_URL", "SHARED_VALUE", "LOCAL_ONLY", "MODE_ONLY", "MODE_LOCAL_ONLY"];
 
 function clearEnv() {
   for (const key of envKeys) {
@@ -29,6 +23,14 @@ function withTempWorkspace(run: (workspaceRoot: string) => void) {
   }
 }
 
+// Clear before each test too: CI inherits DATABASE_URL from the outer shell,
+// and loadWorkspaceEnv (parseFile + process.env fallback) will read the
+// pre-existing shell value instead of the .env file under test.
+beforeEach(() => {
+  clearEnv();
+  delete process.env.NODE_ENV;
+});
+
 afterEach(() => {
   clearEnv();
   delete process.env.NODE_ENV;
@@ -37,10 +39,19 @@ afterEach(() => {
 describe("loadWorkspaceEnv", () => {
   it("loads standard workspace env files in precedence order", () => {
     withTempWorkspace((workspaceRoot) => {
-      writeFileSync(join(workspaceRoot, ".env"), "DATABASE_URL=postgres://from-env\nSHARED_VALUE=base\n");
-      writeFileSync(join(workspaceRoot, ".env.development"), "SHARED_VALUE=mode\nMODE_ONLY=development\n");
+      writeFileSync(
+        join(workspaceRoot, ".env"),
+        "DATABASE_URL=postgres://from-env\nSHARED_VALUE=base\n",
+      );
+      writeFileSync(
+        join(workspaceRoot, ".env.development"),
+        "SHARED_VALUE=mode\nMODE_ONLY=development\n",
+      );
       writeFileSync(join(workspaceRoot, ".env.local"), "SHARED_VALUE=local\nLOCAL_ONLY=1\n");
-      writeFileSync(join(workspaceRoot, ".env.development.local"), "SHARED_VALUE=mode-local\nMODE_LOCAL_ONLY=1\n");
+      writeFileSync(
+        join(workspaceRoot, ".env.development.local"),
+        "SHARED_VALUE=mode-local\nMODE_LOCAL_ONLY=1\n",
+      );
       process.env.NODE_ENV = "development";
 
       const loadedPaths = loadWorkspaceEnv({ workspaceRoot });