Fix CI matrix and pnpm cache: set env vars in workflow, drop matrix

- Set PNPM_STORE_DIR and COREPACK_HOME as job env vars instead of
  relying on container.options -e flags which act_runner may ignore
- Replace fragile cross-job matrix with single-job loop for builds
- Both fixes: empty matrix app name and 0 reused packages

.gitea/workflows/deploy-production.yaml

@@ -13,6 +13,9 @@ on:
 jobs:
   deploy:
     runs-on: ubuntu-latest
+    env:
+      PNPM_STORE_DIR: /pnpm-store
+      COREPACK_HOME: /pnpm-store/.corepack
     steps:
       - uses: actions/checkout@v4
         with: