fix: restore completed task workspace access

.github/docker/ci-base/Dockerfile

@@ -32,6 +32,7 @@ FROM mcr.microsoft.com/playwright:v1.61.1-noble AS runtime
 
 ENV DEBIAN_FRONTEND=noninteractive \
     PNPM_HOME=/pnpm \
+    COREPACK_HOME=/root/.cache/node/corepack \
     PATH=/pnpm:$PATH
 
 # --- System packages -------------------------------------------------------

.github/scripts/e2e-tests-workflow-contract_test.py

@@ -13,6 +13,8 @@
 DOCKERFILE = REPO_ROOT / ".github" / "docker" / "ci-base" / "Dockerfile"
 IMAGE_WORKFLOW = REPO_ROOT / ".github" / "workflows" / "ci-base-image.yml"
 E2E_WORKFLOW = REPO_ROOT / ".github" / "workflows" / "e2e-tests.yml"
+BACKEND_WORKFLOW = REPO_ROOT / ".github" / "workflows" / "backend-tests.yml"
+FRONTEND_WORKFLOW = REPO_ROOT / ".github" / "workflows" / "frontend-tests.yml"
 LINT_WORKFLOW = REPO_ROOT / ".github" / "workflows" / "lint-action-pinning.yml"
 IMAGE_DIGEST_RESOLVER = REPO_ROOT / ".github" / "scripts" / "resolve-image-digest.sh"
 VALID_IMAGE_INDEX = (
@@ -154,6 +156,18 @@ def test_image_workflow_publishes_desktop_tags(self) -> None:
         self.assertIn("type=gha,scope=runtime", workflow)
         self.assertIn("desktop-latest", workflow)
 
+    def test_container_jobs_use_the_baked_corepack_cache(self) -> None:
+        dockerfile = DOCKERFILE.read_text(encoding="utf-8")
+
+        self.assertIn("COREPACK_HOME=/root/.cache/node/corepack", dockerfile)
+        for workflow_path in (E2E_WORKFLOW, BACKEND_WORKFLOW, FRONTEND_WORKFLOW):
+            workflow = workflow_path.read_text(encoding="utf-8")
+            self.assertIn(
+                "COREPACK_HOME: /root/.cache/node/corepack",
+                workflow,
+                workflow_path.name,
+            )
+
     def test_desktop_job_uses_image_without_live_bootstrap_downloads(self) -> None:
         workflow = E2E_WORKFLOW.read_text(encoding="utf-8")
         desktop_job = job_block(workflow, "desktop-e2e", "e2e-report")

.github/workflows/backend-tests.yml

@@ -32,6 +32,11 @@ permissions:
   contents: read
   packages: read
 
+env:
+  # Container jobs may override HOME. Keep Corepack pointed at the pnpm cache
+  # prepared in the CI image.
+  COREPACK_HOME: /root/.cache/node/corepack
+
 jobs:
   runner_plan:
     name: Plan external runner allocation

.github/workflows/e2e-tests.yml

@@ -38,6 +38,11 @@ permissions:
   # pull the kandev-ci image from GHCR via GITHUB_TOKEN.
   packages: read
 
+env:
+  # Container jobs may override HOME. Keep Corepack pointed at the pnpm cache
+  # prepared in the CI image so setup does not require an npm registry request.
+  COREPACK_HOME: /root/.cache/node/corepack
+
 jobs:
   runner_plan:
     name: Plan external runner allocation

.github/workflows/frontend-tests.yml

@@ -28,6 +28,11 @@ permissions:
   contents: read
   packages: read
 
+env:
+  # Container jobs may override HOME. Keep Corepack pointed at the pnpm cache
+  # prepared in the CI image.
+  COREPACK_HOME: /root/.cache/node/corepack
+
 jobs:
   runner_plan:
     name: Plan external runner allocation