ci: fix build workflows - remove defaults.run.working-directory

All 4 build jobs failed because defaults.run.working-directory
chdir'd into subdirs before checkout created them.

- Remove defaults.run.working-directory from all reusable workflows
- Add per-step working-directory to run steps that need it
- Auth config step runs from repo root (no working-directory)

.gitea/workflows/docs_call.yaml

@@ -6,12 +6,10 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: apps/docs
     steps:
       - name: Configure git auth for submodules
         run: git config --global url."https://x-access-token:${{ secrets.BUILD_TOKEN }}@git.datadunia.com/".insteadOf "https://git.datadunia.com/"
+
       - uses: actions/checkout@v4
         with:
           submodules: true
@@ -24,9 +22,11 @@ jobs:
           node-version: '24'
 
       - name: Install
+        working-directory: apps/docs
         run: npm ci || npm install
 
       - name: Build
+        working-directory: apps/docs
         run: npm run docs:build
 
       - name: Upload artifact