feat(runner): redirect local runner stdout/stderr to fluentd

[patricklundquist]

When running a local runner inside a developer pod, standard output and standard error are redirected to /proc/1/fd/1 using os.dup2. This allows fluentd to capture and route the local runner's logs as part of the main pod logs. This behavior is enabled when the CLARIFAI_DEV_POD environment variable is set to "true".

[Copilot]

Pull request overview

Adds an opt-in mechanism for local runners (when running inside a developer pod) to redirect their stdout/stderr to PID 1’s stdout so fluentd can capture the logs in the main pod log stream.

Changes:

• Redirects stdout/stderr to /proc/1/fd/1 when CLARIFAI_DEV_POD="true".
• Adds sys import to support the file descriptor redirection logic.

[github-actions]

Package	Line Rate	Health
clarifai	45%	❌
clarifai.cli	61%	➖
clarifai.cli.templates	67%	➖
clarifai.cli.templates.toolkits	100%	✔
clarifai.client	65%	➖
clarifai.client.auth	67%	➖
clarifai.constants	100%	✔
clarifai.datasets	100%	✔
clarifai.datasets.export	69%	➖
clarifai.datasets.upload	75%	➖
clarifai.datasets.upload.loaders	37%	❌
clarifai.models	100%	✔
clarifai.rag	0%	❌
clarifai.runners	49%	❌
clarifai.runners.models	60%	➖
clarifai.runners.pipeline_steps	39%	❌
clarifai.runners.pipelines	72%	➖
clarifai.runners.utils	62%	➖
clarifai.runners.utils.data_types	72%	➖
clarifai.schema	100%	✔
clarifai.urls	58%	➖
clarifai.utils	64%	➖
clarifai.utils.evaluation	16%	❌
clarifai.workflows	95%	✔
Summary	60% (11878 / 19744)	➖

Minimum allowed line rate is 50%