Add Proof Flow Composer demo (simulated adapters + live runtime/verification)

[GsCommand]

Motivation

• Provide a public demo that composes simulated external adapter events (Coinbase CDP webhook, x402 payment) with a live CommandLayer runtime action and live verification into a single trace-linked workflow to demonstrate trust boundaries and trace propagation.
• Make the demo safe for browser use by clearly labeling simulated steps and avoiding embedding any secrets, keys, or production payment implementations.

Description

• Added a new public demo page public/proof-flow-composer.html that implements a four-step flow UI and trace line with the spans coinbase.webhook.verified, x402.payment.accepted, agent.action.executed, and verifyagent.receipt.verified, plus run/reset controls, copy buttons, receipt tabs (Final Receipt, Trace, Verification, Trust Boundary), and CTA links.
• Implemented hybrid flow logic in-browser that: simulates Coinbase and x402 adapter events and generates a shared trace_id, calls the live runtime endpoint https://runtime.commandlayer.org/summarize/v1.1.0 to obtain a signed runtime receipt, and attempts verification against /api/verify with fallback /api/agents/verifyagent.
• Updated public/integrations.html to add a “Proof Flow Composer” card linking to /proof-flow-composer.html.
• Safety and trust-boundary controls added: Coinbase/x402 steps are explicitly labeled simulated adapter event, runtime and verification steps are labeled live, no secrets or private keys are placed in browser code, and clear error states exist for unreachable runtime/verifier.
• Note runtime/verifier limitation: the page depends on reachable live runtime and verifier endpoints and surfaces clear errors if those network calls fail.

Testing

• Ran the project test suite with npm test, and all automated tests passed (53 passing tests reported).

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Codex Task

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Project	Deployment	Actions	Updated (UTC)
commandlayer-commandlayer-org	Ready	Preview, Comment	May 22, 2026 10:06pm
commandlayer-org	Ready	Preview, Comment	May 22, 2026 10:06pm
commandlayer-org111	Ready	Preview, Comment	May 22, 2026 10:06pm