[mavam]

🔍 Problem

• Durable hosts cannot load Webfox's ordinary Pi extension.

🛠️ Solution

• Export createWebfoxExtension through webfox/durable, sharing provider schemas and descriptions with normal Pi.
• Follow conversation environments and cancellation, stream progress, retain partial failures, and spill oversized output privately.
• Mark billable external requests unsafe to replay.
• Keep the library, CLI, and Pi entry points independent of the optional durable runtime.
• Verify both adapters from the packed package; refresh dependency locks and the Nix dependency hash.

💬 Review

• Experimental Pi Durable 1.0 API; no codemode structured-result interface in the durable adapter.
• Cancellation and unsafe replay do not undo provider effects or billing.
• Validation: 516 tests, typecheck, formatting, build, and packed-package smoke passed.
• Nix dependency hash was computed with fetcher v2; no local Nix build was run.
• Production dependency audit still reports three high-severity findings through Firecrawl/Axios. Those dependency versions are unchanged from the base branch; no audit fix was applied.

_{📎 Related: mavam/pi-fancy-footer#41, mavam/pi-mcp-client#38, mavam/infra#1}