Add provider capability matrix endpoint for stable marketplace diligence

[emrekayat]

Why this matters

SCF reviewers and potential partners need a stable way to see which providers support which query modes, prices, fallback behavior, and live/demo status. A capability matrix turns provider configuration into a clear product surface.

Scope

Add a public API response, or extend /api/catalog, with a normalized provider capability matrix:

• provider id;
• mode/category;
• price USD;
• source type (live, deterministic-fallback, etc.);
• estimated latency;
• enabled/disabled status;
• fallback availability;
• short caveat text when provider requires env keys.

Suggested files

• apps/api/src/routes/public.ts
• apps/api/src/lib/pricing.ts
• apps/api/src/providers/registry.ts
• packages/shared/src/schemas.ts

Acceptance criteria

• Endpoint response order is deterministic.
• Disabled or unconfigured providers are represented honestly.
• Tests cover matrix shape and sorting.
• No provider execution behavior changes.

[Tobi-8]

@Tobi-8 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hey maintainer, i have looked through your description, and i have had experience in this type of issue.
kindly assign

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[madisonsc52-del]

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Hi maintainer, I would love to work on this issue. I can get started on it right away. Could you please assign it to me

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[dedukpe]

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Please can you assign this to me
Thank you

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[Jumongweb]

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Hi maintainer, i will like to solve this issue

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[directorfloo]

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[khanavi272-spec]

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[ussyalfaks]

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[Peaostrel]

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i can handle this quickly

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[VeronicDev]

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[oraimoitel]

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Can I work on this

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