Add detailed FOC pricing table

[snissn]

Summary

• Adds detailed Filecoin Onchain Cloud operation pricing to the About page pricing table.
• Uses the finalized Proving Service price of $0.025 per Data Set / 30 days.
• Keeps unchanged operation prices from the source table.

Refs FilOzone/filecoin-cloud#290

Testing

• pnpm dlx markdownlint-cli2 --config .github/.markdownlint-cli2.jsonc docs/src/content/docs/introduction/about.mdx
• git diff --check

[Copilot]

Pull request overview

This PR updates the “About Filecoin Onchain Cloud” documentation to include a more detailed pricing table for Filecoin Onchain Cloud (FOC) operations, including per–Data Set operational fees and the finalized Proving Service price.

Changes:

• Expanded the About page pricing table with additional operation-level rows (create/delete data set, add/delete piece, terminate service).
• Added the Proving Service price at $0.025 per Data Set per 30 days.

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[snissn]

Currently the table delimits pricing in "$" and there is a note below the table that All storage and retrieval charges are denominated in USDFC (or supported ERC-20 tokens) and settled via Filecoin Pay. - The current state of things looks good to me, but welcome any alternatives or changes from anyone? I would ignore this nit because accepting it makes the denomination of funds inconsistent within the table

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	synapse-dev	115444a	Commit Preview URL Branch Preview URL	May 08 2026, 10:27 PM

[rvagg]

Thanks @snissn; I'm going to convert this to draft for now until we actually have this implemented anywhere. Language and code design for the SDK is going on in #763. There's some things to iron out in here like the proving service fee should be 0.0024; the floor price needs to be removed from above this edit; we need to harmonise on name ("Network Congestion Fee" instead of Sybil is I think what we're going to go with); there's a lockup for lifecycle operations. See FilOzone/filecoin-services#469 for more detail on the contract side, still to be implemented though.
We'll probably also want to harmonise a little on the split of 3 titles: "rates", "fees" and "lockup" so we can explain these things a bit more clearly because it gets confusing very quickly. As a headline we can probably make "lockup" fade into the background as an implementation detial but it's going to need to be properly covered somewhere.