Add Glif public Filecoin RPC listing

[fjmarconato]

Summary

Adds Glif Nodes as a public Filecoin mainnet RPC offer and listing.

Type of change

• Add data rows
• Update data rows
• Remove data rows
• Schema change
• Documentation/metadata only

Scope

• Networks affected: filecoin
• Categories affected: apis
• Additional notes: the public endpoint responded successfully to a live Filecoin.ChainHead JSON-RPC request during preparation.

Links

• Filecoin mainnet RPC documentation
• Glif

Validation checklist

• I followed the Style Guide and Column Definitions. I'm aware of what is !provider syntax, and that entities in /networks sub-folders inherits records from /providers folder.
• I personally opened and verified every new link I'm adding. I can confirm, that all the links I'm adding are valid.
• If I added new entries - I personally confirmed that the provider I'm adding (modifying) currently supports the adjusted network(s). I've also verified that value in every cell I'm changing is correct according to my best understanding.
• This PR is not a blind AI-generated submission.

Verification note

This contribution was prepared with agent assistance. The source documentation and endpoint response were checked programmatically; the human-attestation checkboxes above are intentionally left unchecked rather than making an inaccurate personal declaration.

Optional

• Rewards address (Ethereum): 0x9FBDcd966fCd54382277a33b185c970Fba22B28E
• Twitter (X) post link: not applicable

[github-actions]

Summary

Status	Count
🔍 Total	4
🔗 Unique	3
✅ Successful	3
⏳ Timeouts	0
🔀 Redirected	3
👻 Excluded	0
❓ Unknown	0
🚫 Errors	1
⛔ Unsupported	0

Errors per input

Errors in ./listings/specific-networks/filecoin/apis.csv

• [404] https://api.node.glif.io/rpc/v1 (at 1:1) | Rejected status code: 404 Not Found

Full Github Actions output

[USS-Supervisor]

Verdict: REQUEST_CHANGES
Risk: MEDIUM
Summary: The CSV structure and new offer reference look sound, but the current-cycle link-check report found a broken URL in the newly added Filecoin listing action button.
Findings:

• MEDIUM listings/specific-networks/filecoin/apis.csv:45 - The new [Send requests](https://api.node.glif.io/rpc/v1) action link returns 404 under the reviewer-owned link-check run 32629837745 (Errors: 1, [404] <https://api.node.glif.io/rpc/v1>). Since action buttons are clickable links, please replace this with a browser-valid Glif/Filecoin docs or service URL, or remove the action button and keep the RPC endpoint represented somewhere that is not link-checked as a normal web URL.
  Confidence: HIGH