docs(provider): add AI Power Grid community provider

[halfaipg]

Background

AI Power Grid publishes @aipowergrid/ai-sdk-provider@0.1.0, a community provider for AI SDK 7 that exposes text, image, and experimental video models plus a typed music-generation helper. The package is public on npm with provenance and its packed-package production gate has exercised discovery, quoting, streaming, and charging reconciliation against the live Grid endpoint.

The provider routes work to remote community-operated workers, so the documentation explicitly covers server-side credential handling and the plaintext worker trust boundary.

Summary

• add an AI Power Grid community-provider page
• document text generation and streaming through standard AI SDK interfaces
• document image and experimental video models plus the explicit music helper
• cover live model discovery, credit summaries, canonical quotes, and failure handling
• add the provider to the community-provider list

This is documentation for a separately maintained community package. It does not add or modify a Vercel-owned package.

Checklist

• All commits are signed (PRs with unsigned commits cannot be merged)
• Tests have been added / updated (for bug fixes / features)
• Documentation has been added / updated (for bug fixes / features)
• A patch changeset for relevant packages has been added (for bug fixes / features - run pnpm changeset in the project root)
• I have reviewed this pull request (self-review)

Verification

• commit 22b0e4f5438b8bc1b2f6729379ebd7b1bb2e7904 is GitHub-signed and verified
• oxfmt --check passes for both changed MDX files
• node tools/validate-properties-tables.mjs validates all 156 MDX files
• git diff --check passes
• the package name, version, exports, examples, and live model identifiers were checked against the published npm artifact and current Grid model catalog
• every public documentation link was checked; the npm package was separately verified with npm view

Future Work

Model availability follows connected workers and changes over time. The package's discovery methods and Grid quote endpoint remain authoritative rather than a static model or price table in this page.

[halfaipg]

Ready for maintainer review. The only red status is Vercel's Authorization required to deploy status for the fork preview; it is not a documentation build or test failure. The security review, Socket report, agent review, and code-owner check are green.

The referenced @aipowergrid/ai-sdk-provider@0.1.0 package is published. I also refreshed its source verification at the PR's documented contract: 15 tests passed with the credential-gated live test explicitly skipped, and typecheck, Biome lint, and build all passed. The page keeps credentials server-side, discloses the community-worker plaintext boundary, and explicitly states that the listing does not imply a Vercel partnership.