Add Hydra Config support for UI scripts

[Jack-Khuu]

We currently use argparsers, but as we land more pipeline features, this will grow unwieldy and we'll want a unified config for controlling all the individual agent components.

This PR adds an initial Hydra setup and migrates the existing UI clis (pipeline-ui, fuser-ui, kernel-agent).

Hydra integration for other scripts will be in follow up PRs

Note: We can follow up this PR to use StructuredConfigs once the cli is a bit more stable

Note 2: I'm not 100% sold that I want to use Hydra, but it's a simple onramp/offramp if we want to use something else (Fiddle, manual dataclass factories, etc.) and it's better than manual parsing

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Manual tests

scripts/triton_ui.py

kernel-agent
kernel-agent port=8086

python scripts/triton_ui.py
python scripts/triton_ui.py port=8086

scripts/pipeline_ui.py

pipeline-ui
pipeline-ui port=8085

python scripts/pipeline_ui.py
python scripts/pipeline_ui.py port=8085

scripts/fuser_ui.py

fuser-ui
fuser-ui port=8085

python scripts/fuser_ui.py
python scripts/fuser_ui.py port=8085

Example Output (Similar across scripts)

• Note the change in ports

🚀 Starting Triton Kernel Agent UI...
📝 Provide your OpenAI API key in the UI or configure in .env file
🌐 Opening on Meta devserver: https://devgpu008.eag2.facebook.com:8085/
💡 Make sure you're connected to Meta VPN to access the demo
* Running on local URL:  https://devgpu008.eag2.facebook.com:8085
* To create a public link, set `share=True` in `launch()`.
^CKeyboard interruption in main thread... closing server.

🚀 Starting Triton Kernel Agent UI...
📝 Provide your OpenAI API key in the UI or configure in .env file
🌐 Opening on Meta devserver: https://devgpu008.eag2.facebook.com:8086/
💡 Make sure you're connected to Meta VPN to access the demo
* Running on local URL:  https://devgpu008.eag2.facebook.com:8086
* To create a public link, set `share=True` in `launch()`.
^CKeyboard interruption in main thread... closing server.