Move cache env vars to workflow level, remove debug step

Move PNPM_STORE_DIR and COREPACK_HOME to workflow-level env
which may propagate differently than job-level in act_runner.

.gitea/workflows/ci.yaml

@@ -10,12 +10,13 @@ concurrency:
   group: ${{ gitea.workflow }}-${{ gitea.ref }}
   cancel-in-progress: true
 
+env:
+  PNPM_STORE_DIR: /pnpm-store
+  COREPACK_HOME: /pnpm-store/.corepack
+
 jobs:
   lint-and-test:
     runs-on: ubuntu-latest
-    env:
-      PNPM_STORE_DIR: /pnpm-store
-      COREPACK_HOME: /pnpm-store/.corepack
     steps:
       - uses: actions/checkout@v4
 
@@ -28,9 +29,6 @@ jobs:
   build:
     needs: [lint-and-test]
     runs-on: ubuntu-latest
-    env:
-      PNPM_STORE_DIR: /pnpm-store
-      COREPACK_HOME: /pnpm-store/.corepack
     steps:
       - uses: actions/checkout@v4
         with: