Rebuild SDK page as developer entry for @commandlayer/agent-sdk@1.2.0

[GsCommand]

Motivation

• Provide a canonical SDK developer landing page for @commandlayer/agent-sdk@1.2.0 that serves as the recommended entry point for integrating verifiable receipts.
• Replace stale/legacy copy and examples with canonical metadata.proof fields and recommended developer usage patterns (including privateKeyPem).

Description

• Rebuilt public/sdk-records.html as the SDK landing page and added the requested sections: Hero, Install (with version), Quickstart (using privateKeyPem and keyId), Receipt shape, "What the SDK does" / "does not do", Runtime vs SDK, Trust Verification verbs, Verification states, CTAs, and footer updates.
• Updated top navigation to the requested order (Home, Protocol, Capabilities, Verifier, SDK, Docs, Claim, GitHub) and kept the light ENS/Stripe visual direction consistent with existing pages.
• Canonicalized examples and copy to use metadata.proof with json.sorted_keys.v1, SHA-256, Ed25519, kid = vC4WbcNoq2znSCiQ, and signer_id = runtime.commandlayer.eth, and removed legacy fields like privateKey, top-level proof, and lowercase algorithm labels.
• No API routes, schemas, or unrelated pages were changed, and no files were deleted.

Testing

• Ran npm install successfully without dependency errors.
• Ran npm test and all automated tests passed (26 tests passing).
• Ran npm run build which failed due to a missing build script in the project (no change made to project scripts).

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
commandlayer-commandlayer-org	Ready	Preview, Comment	May 20, 2026 11:39pm
commandlayer-org	Ready	Preview, Comment	May 20, 2026 11:39pm
commandlayer-org111	Ready	Preview, Comment	May 20, 2026 11:39pm