Netlify deploy error due to multiprocessing FileNotFoundError in mkdocs build

[netlify-coding]

🔗 View agent run: https://app.netlify.com/projects/pixelroot32-docs/agent-runs/69c88dcce174be6437e7a4b4

🤖 Agent: Claude

💬 Prompt: The Netlify deploy errored, with the following guidance provided:

1. Relevant error lines

• The parallel-processing warning: line 236 and the suggested fallback at line 237.
• The Python traceback for mkdocs invocation: [lines 238–...

✅ Result: Fixed the mkdocs build failure caused by Python's multiprocessing module being unable to create semaphores in the Netlify build environment. The root cause was that /dev/shm (the shared memory directory required for POSIX semaphores) does not exist in the Netlify build container. The mkdocs-git-revision-date-localized-plugin uses multiprocessing.Pool to compute git timestamps in parallel, which triggered a FileNotFoundError when attempting to create a SemLock.

The previous fix attempt added enable_parallel_processing: False as a top-level mkdocs.yml setting, but mkdocs does not recognize this option — it's not a valid configuration key. The setting was ignored, and the plugin still attempted parallel processing, resulting in the same crash.

Two changes were made:

• Removed the invalid enable_parallel_processing: False from mkdocs.yml, which was producing a config warning and had no effect.
• Updated the build command in netlify.toml to create /dev/shm before running the build (mkdir -p /dev/shm && pip install -r requirements.txt && mkdocs build). This provides the shared memory directory that Python's multiprocessing module needs for semaphore support, allowing the git-revision-date-localized plugin's parallel processing to work correctly.