fix(hf-space): run on CPU basic; disable Gradio SSR (Node sidecar)

[picaultj]

Problem

The Space at picault/conflens shows a runtime error:

No @spaces.GPU function detected during startup
* Running on local URL:  http://0.0.0.0:7860, with SSR ⚡ (Node proxy -> Python :7861)
Stopping Node.js server...

• No @spaces.GPU function detected is only raised on ZeroGPU hardware, which requires a @spaces.GPU-decorated function. ConfLens is CPU-only (LLM calls go out over HTTP; no local GPU work), so on ZeroGPU HF refuses to start it. The app itself booted fine (Running on local URL …).

Fix

Two parts:

1. Hardware = CPU basic (the actual fix; maintainer action on HF). Set the Space's Settings → Hardware to CPU basic (free). Documented in the README ("pick … CPU basic …") and hinted via suggested_hardware: cpu-basic in the Space metadata.
2. Disable Gradio SSR (code hardening). Gradio 6 defaults to SSR, which runs a Node sidecar (Node proxy -> Python). This CPU app doesn't need it, so space_app.py now sets GRADIO_SSR_MODE=false and passes ssr_mode=False — plain server-rendered Python, fewer moving parts on free CPU.

Testing

• Booted space_app.py locally with SSR disabled → HTTP 200, and the log now shows a plain Running on local URL with no Node/SSR proxy line.
• ruff clean.

What you need to do on HF

• Set picault/conflens hardware to CPU basic.
• Ensure the Space SDK is Gradio (not Docker) — the repo ships sdk: gradio / space_app.py / requirements.txt.
• Confirm HF_TOKEN (repo secret) belongs to picault with write access, and add your LLM key(s) as Space secrets.

After merging, the sync workflow (with the picault owner fix from #20) will push and the Space should come up on CPU.

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Generated by Claude Code

[picaultj]

Closing: the Hugging Face deployment is being removed in #22 (Gradio Spaces are no longer free), so this runtime fix is moot.

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Generated by Claude Code