Add vendor-neutral privacy router skill with HoudiniSwap adapter

[quiz42]

Summary

The current workspace adds a vendor-neutral privacy-router skill on top of the existing HoudiniSwap direct skill. The router lets agents plan privacy-preserving transfer/swap intents, compare provider quotes, create routed orders, and poll routed order status using provider-prefixed IDs.

Change set reflected in the workspace

• Add skills/privacy-router/ with SKILL.md, provider registry, routing model, quote ranking, CLI commands, and tests.
• Add root wrappers under scripts/router/ for list-providers, plan-transfer, get-quotes, create-order, get-order, and wait-order.
• Add a HoudiniSwap provider adapter with independent enable/disable configuration, asset resolution, quote normalization, routed quote/order IDs, order creation, and status polling.
• Preserve strict privacy behavior: strict requirements are not silently downgraded; unmet routes return an unmet result instead of creating an order.
• Fix highest-available behavior so HoudiniSwap probes both regular and anonymous=true private quotes and prefers the strongest available privacy route.
• Fix live order status handling by recognizing statusLabel, displayStatus, and status, including HoudiniSwap terminal labels like FINISHED, SWAP_COMPLETED, SWAP_FAILED, and DEPOSIT_EXPIRED.
• Update README, .env.example, package scripts, installers, test discovery, and deployment verification to include both privacy-router and houdiniswap skills.
• Make scripts/verify-deployment.sh --target accept both parent skills directories and direct skill directories for backward compatibility.

Acceptance criteria

• privacy-router can list providers even when HoudiniSwap credentials are missing, with a clear disabled reason.
• get-quotes --privacy unlinkability returns only eligible private quotes or an unmet result.
• get-quotes --privacy highest-available probes private HoudiniSwap routes and selects the private quote when available.
• create-order and wait-order dispatch routed IDs such as houdiniswap:q-... and houdiniswap:h-... to the correct provider adapter.
• Install scripts link both bundled skills into existing agent skills directories.
• Deployment verification works for both --target ~/.claude/skills and --target ~/.claude/skills/houdiniswap style paths.

Validation already run locally

• npm test passed: 153 tests total, 151 passed, 2 live tests skipped by configuration, 0 failed.
• npm run lint:syntax passed.
• Functional mock flow passed: get-quotes --privacy highest-available issued both regular and anonymous=true quote probes, selected an unlinkability quote, created an order, and wait-order completed it.