feat: refactor config flow and directory structure

- Create config-provider.yml (reusable workflow, conf→JSON)
- Replace duplicated job env blocks with workflow env + fromJson
- Move provider workflows to workflows/ directory
- Move consumer scripts to .gitea/scripts/
- Move feature-env.conf to .gitea/workflows/
- Add bats-report.sh for TAP→HTML conversion
- Update ci.yml with setup→needs→with pattern
- Add ADR 0006 directory ownership
- Document cross-job config propagation in ci-pipeline-practices.md
- Remove config.yaml, scripts/load-config.sh unused

workflows/config-provider.yml

@@ -0,0 +1,31 @@
+name: Config Provider Library
+on:
+  workflow_call:
+    inputs:
+      config_path:
+        required: true
+        type: string
+    outputs:
+      env_json:
+        value: ${{ jobs.parse-config.outputs.json_data }}
+
+jobs:
+  parse-config:
+    runs-on: ubuntu-latest
+    outputs:
+      json_data: ${{ steps.convert.outputs.JSON_OUT }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - id: convert
+        run: |
+          JSON_STRING=$(jq -R -s '
+            split("\n")
+            | map(select(length > 0 and (startswith("#") | not)))
+            | map(split("="))
+            | map({(.[0]): .[1]})
+            | add
+          ' "${{ inputs.config_path }}")
+
+          CLEAN_JSON=$(echo "$JSON_STRING" | jq -c .)
+          echo "JSON_OUT=$CLEAN_JSON" >> "$GITHUB_OUTPUT"