DEVX-152: fix: remove dead translation keys and add missing one

Co-authored-by: emil User <emil.simeonov@tutanota.com>

docs/tech/architecture.md

@@ -50,7 +50,6 @@ src/devx/
     ├── __init__.py
     ├── discover_runners.py      # Dynamic Gitea runner discovery
     ├── distribute_molecule.py   # Distribute scenarios across runners
-    ├── molecule_ci_guard.py     # Run molecule with cross-runner fail-fast
     ├── molecule_all.py          # Run all molecule scenarios locally
     ├── start_docker.py          # Ensure Docker is available for molecule
     └── platforms.py             # Supported molecule platforms
@@ -300,9 +299,9 @@ Distributes files matching a glob pattern across N parallel runners
 
 ### `integration_guard.py`
 
-Runs pytest with the same cross-runner failure detection mechanism used by
-`molecule_ci_guard`. If any other integration-tests matrix runner reports
-failure, the current pytest subprocess is killed and this runner exits early.
+Runs pytest with cross-runner failure detection. A background thread polls
+the Gitea API. If any other integration-tests matrix runner reports failure,
+the current pytest subprocess is killed and this runner exits early.
 
 ## Developer tools (`devx.tools`)
 
@@ -382,13 +381,6 @@ the supported OS platform matrix. Supports `--roles-root` for multi-role
 repositories, `--list` to list scenarios, and `--list-platforms` to list
 platforms.
 
-### `molecule_ci_guard.py`
-
-Runs molecule tests sequentially while polling the Gitea API for other runner
-failures. If any other molecule matrix runner reports failure, the current
-molecule subprocess is killed and this runner exits early. Supports both
-single-role (4-part) and multi-role (5-part) pair encoding.
-
 ### `molecule_all.py`
 
 Runs all molecule scenarios on all supported OS platforms sequentially.

docs/tech/ci-cd-workflow.md

@@ -478,15 +478,6 @@ python -m devx.molecule.distribute_molecule --list
 python -m devx.molecule.distribute_molecule --list-platforms
 ```
 
-### `molecule_ci_guard.py`
-
-Runs molecule tests sequentially while polling the Gitea API for other runner
-failures. Aborts early if another runner fails the same job.
-
-```bash
-python -m devx.molecule.molecule_ci_guard [--roles-root <dir>] pair1 pair2 ...
-```
-
 ### `validate_commit_msg.py`
 
 Validates commit messages. On feature branches: conventional commits only