feat(web): dashboard redesign + backend reference page

[Pattermesh]

Rewrite web/index.html as a scrollable hybrid dashboard and add web/docs.html as a module-by-module backend reference. Both consume the kcolbchain/brand tokens from CDN — depends on the identity-layer additions in kcolbchain/brand#5 (mergeable separately).

what lands

web/index.html — dashboard

• Sticky header with kcolbchain / switchboard lockup + anchor nav.
• Hero with positioning chips: post-quantum · chain-agnostic · token-agnostic · agent-native (HTTP 402 · MPP · AP2 · ZAP wire).
• At-a-glance stat row (modules, PRs, scenes, chains targeted).
• Module grid: x402_middleware, zap_transport, gas_tracker · gas_budget, nonce_manager, AgentEscrow.sol, pq, a2a_x402, SettlementRegistry (incl. the LUX settlement surface from [design] Multi-chain switchboard: TRON / Avalanche / LUX — settlement model #59).
• Multi-chain section (per [design] Multi-chain switchboard: TRON / Avalanche / LUX — settlement model #59): execution chains TRON / AVAX / Base / ETH → settlement on LUX, SettlementRegistry highlighted in mark color.
• Rails compatibility matrix across 7 capabilities × 5 rails.
• Novel concepts — surfaces the innovation issues [innovation] .well-known/agent-payment.json — discoverable agent identity hub #42-[innovation] Composable refund policies as on-chain plugins #46 + EIP [EIP] Native-ETH Agent-to-Agent Escrow — formalize AgentEscrow.sol as a Standards-Track ERC #50.
• Post-quantum section with working code sample.
• Scene index linking into agents-demo.html with URL fragments.
• 30-second quickstart with FastAPI + X402Middleware.

web/docs.html — backend reference

• Two-column layout with sticky TOC grouped by surface (http / wire / chain / crypto / adapters / future).
• One section per module: status chip, file path, what / why, parameters table or solidity surface, example, links to PRs.
• Includes the forthcoming SettlementRegistry as a "design" section anchored to [design] Multi-chain switchboard: TRON / Avalanche / LUX — settlement model #59.

design system

Brutalist control-panel aesthetic per the brand kit:

• JetBrains Mono only. No serif, no sans.
• Near-black background, three greys, one yellow mark.
• 1px hairline borders everywhere; no shadows, no gradients.
• Body 15px, section heads 28px, hero 44px+ — large readable type, no compression.
• Responsive 1/2/3/4-col grid, fluid up to 1280px.

No build, no framework, no install — single static HTML. Replaces the old 422-line scene-viewer index that was dense and 13px-bodied.

preview

cd switchboard/web && python3 -m http.server 17402

Then:

• http://127.0.0.1:17402/ (dashboard)
• http://127.0.0.1:17402/docs.html (backend reference)

depends on

Brand additions in kcolbchain/brand#5:

• --col-wide: 1280px token (for .container max-width)
• .card.module variant (used by the module grid)
• the identity layer overall (logos, shapes, layout)

This PR will render correctly once kcolbchain/brand#5 lands and the GH Pages CDN refreshes. Until then, the --col-wide reference falls back to fluid width (no max), which is still presentable.

cc @abhicris

[abhicris]

🤖 Audit skipped — diff is 98KB (limit 64KB). Labelling for human review.

[Pattermesh]

Updated to reflect everything that landed in the last 24h on main:

• Multi-chain section — was "pending Z's review", now reflects that the design landed via PR Gaotax2006 [ switchboard ] Fix #59: Add multi-chain settlement design #71 (notary v1 → ZK-relay v2, per docs/multi-chain-settlement.md). Closes [design] Multi-chain switchboard: TRON / Avalanche / LUX — settlement model #59.
• Module grid — SettlementRegistry [design] card replaced with multi-chain settlement [design v0.1]; added cards for the modules shipped in PR Gaotax2006 [ Feature ] Fix #1: MPC wallet with key management #53 + contracts: oracle-mediated release (releaseByAttestation) + Foundry tests #52: mpc_wallet, mpp/session, adapters/lucidly, OracleAggregator.
• Novel concepts — adversarial conformance harness and .well-known/agent-payment.json flipped from innovation → shipped chips (PRs Gaotax2006 [ Fix ] Fix #45: Add adversarial conformance test harness #62, Gaotax2006 [ Fix ] Fix #42: Add .well-known/agent-payment.json schema #61 merged); kept the still-pending three ([innovation] Receipt aggregation — N micropayments, 1 on-chain settlement #43 receipt aggregation, [innovation] Private x402 — pay an agent without revealing the amount #44 private x402, [innovation] Composable refund policies as on-chain plugins #46 composable refund policies).
• Stats — bumped to 12 modules, 30+ PRs.
• Docs page — new sections for x402.server, mpp.session, mpc_wallet, OracleAggregator, adapters/lucidly, and a rewritten multi-chain settlement section anchored to the spec doc. TOC reorganized (settlement group replaces "future"; new chain/crypto/adapters entries).
• PQ section — references the luxfi/* PQ-precompile assumption from the spec as the next open question to confirm.

Rebased onto current origin/main. Force-pushed.