Rebuild homepage as protocol foundation with canonical proof messaging

[GsCommand]

Motivation

• Align the public homepage with the protocol foundation: emphasize canonical receipts, runtime signing, and independent verification while preserving the existing light ENS/Stripe visual language and polished receipt preview design.
• Surface production proof context and the runtime signer model without overstating web endpoint canonicality.
• Replace vague/community framing and legacy receipt fields with explicit, canonical proof semantics used by the runtime (json.sorted_keys.v1, SHA-256, Ed25519, kid, signer_id).

Description

• Rewrote public/index.html hero to: badge Production proof live, headline CommandLayer turns agent actions into signed, independently verifiable receipts., subheadline about the protocol stack, and CTAs linking to /stack-proof-demo.html, /capabilities.html, and the SDK GitHub.
• Replaced the receipt preview JSON with the canonical runtime proof shape including verb, class, nested result.payload, and metadata.proof with canonicalization: json.sorted_keys.v1, hash.alg: SHA-256 → hash.value, signature.alg: Ed25519 with kid and value, and signer_id: runtime.commandlayer.eth.
• Updated verification pane labels/animation and status text to reflect canonical proof steps (labels such as Canonicalized, Hash matched, Signer identity matched, Signature valid) and changed runtime animation status to STEP 1 SIGNED, STEP 2 VERIFIED, STEP 3 TAMPERED INVALID without implying schema-valid == verified.
• Rewrote “How it works” sequence to: Action executes → Runtime signs receipt → Verifier checks proof → Tampering fails with the requested descriptions, clarified SDK section that the SDK wraps actions while production runtime handles signing and updated the code snippet to use @commandlayer/agent-sdk@1.2.0 and privateKeyPem marked as environment-only.
• Updated verification pipeline text to canonical terminology (json.sorted_keys.v1, SHA-256, Ed25519, metadata.proof.hash.value) and renamed API section to Verification surfaces with cautious wording about runtime /verify validation; added a Capabilities preview section and updated footer product links to include Protocol, Capabilities, Verifier, Runtime, MCP, SDK, Claim, Docs, GitHub.
• Scope: only public/index.html was modified and no API routes, schemas, global CSS, or other files were changed.

Testing

• Ran npm install successfully.
• Ran npm test and all automated tests passed (26 tests passed, 0 failures).
• Attempted npm run build and it failed because no build script is defined in package.json (this is reported, not a change failure).

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
commandlayer-commandlayer-org	Ready	Preview, Comment	May 20, 2026 10:46pm
commandlayer-org	Ready	Preview, Comment	May 20, 2026 10:46pm
commandlayer-org111	Ready	Preview, Comment	May 20, 2026 10:46pm