feat: sync missing features from v0.49.x line to master

The v0.49.x tag line diverged from origin/master, leaving many
features only accessible via tags but not on the master branch.

New modules:
- ci/cancel_superseded_runs.py — cancel superseded CI runs
- ci/check_workflow_artifact_deps.py — validate artifact deps
- ci/check_workflow_tofu_init.py — validate tofu init steps
- tools/check_alert_rules.py — validate Prometheus alert rules
- tools/check_ansible_set_fact_to_json.py — lint set_fact usage
- tools/check_docker_init.py — validate Docker init scripts
- utils/jinja.py — Jinja2 template utilities
- utils/ui.py — UI/console utilities

Modified modules:
- distribute_molecule.py: add --include-roles/--exclude-roles
- utils/api.py: add container.credentials for private registry auth
- install_tools.py: retry ansible-galaxy on transient timeouts
- setup_image.py: skip dep resolution with --no-deps
- cli.py: register new commands
- i18n.py: add new translation keys

Also removes accidentally committed .vale/styles/Google/ files.

Test results: 2195 passed, 100% coverage.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

.gitea/workflows/post-merge.yml

@@ -35,7 +35,11 @@ env:
 jobs:
   detect-and-configure:
     runs-on: docker
-    container: git.oblachno.oblachno.fyi/oblachno-oss/runner-images/ci-base:latest
+    container:
+      image: git.oblachno.oblachno.fyi/oblachno-oss/runner-images/ci-base:latest
+      credentials:
+        username: ${{ vars.CI_GITEA_USERNAME }}
+        password: ${{ secrets.CI_GITEA_API_TOKEN }}
     timeout-minutes: 10
     defaults:
       run:
@@ -99,7 +103,11 @@ jobs:
     needs: [detect-and-configure]
     if: always() && needs.detect-and-configure.result == 'success'
     runs-on: docker
-    container: git.oblachno.oblachno.fyi/oblachno-oss/runner-images/ci-full:latest
+    container:
+      image: git.oblachno.oblachno.fyi/oblachno-oss/runner-images/ci-full:latest
+      credentials:
+        username: ${{ vars.CI_GITEA_USERNAME }}
+        password: ${{ secrets.CI_GITEA_API_TOKEN }}
     timeout-minutes: 15
     outputs:
       tag: ${{ steps.release-tag.outputs.tag }}