fix(probe): follow HF redirect in ingress measurement

[Mathis (echobt)]

HF resolve URLs answer 302 to the CDN; curl without -L downloaded the 1040-byte redirect body, so every probe host measured ingress=0 Mbit/s and was rejected as slow. Verified from the controller: without -L: 302, 1040 bytes; with -L: 206, full range.

Summary by CodeRabbit

• Bug Fixes
  • The Hugging Face ingress probe now follows redirects when checking ranged downloads.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: ecf73a6f-3baa-4d3a-a58f-b3ff5862d345

📥 Commits

Reviewing files that changed from the base of the PR and between 1df4832 and d6fc70b.

📒 Files selected for processing: 1

• scripts/ops/probe_and_launch.py

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📝 Walkthrough

The ranged Hugging Face ingress probe now uses curl -L to follow redirects. The range, timeout, and download measurement remain unchanged.

Changes: Ingress probe

Layer / File(s)	Summary
Follow redirects scripts/ops/probe_and_launch.py	The ranged curl request now follows redirects with -L. The range, timeout, and download measurement remain unchanged.

Priority: ➖ Normal

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to d6fc7

The probe now follows Hugging Face redirects and measures the ranged download rather than the redirect response. No actionable merge-blocking risk is established; it appears ready for normal checks.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: following Hugging Face redirects during ingress probing.
Docstring Coverage		Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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